US Pat. No. 9,141,163

PORTABLE TERMINAL, RECORDING MEDIUM

NTT DOCOMO, INC., Chiyod...

1. A portable terminal comprising;
a host;
a battery;
a power controller, which includes a first host power controller, a second host power controller, a first contactless front
end (CLF) power controller, and a second CLF power controller;

a chip card in the portable terminal;
a CLF;
an antenna;
a first switch;
a second switch; and
a switch controller,
wherein the power controller supplies power generated by the battery to the host, the chip card in the portable terminal,
and the CLF,

the first switch is connected to open or close a power supply channel to the chip card in the portable terminal and a single
wire protocol (SWP) interface, branching off from a power supply channel from the second host power controller to the host,

the second switch is connected to open or close a power supply channel to the chip card in the portable terminal and the SWP
interface, branching off from a power supply channel from the second CLF power controller to the CLF,

the switch controller opens the first switch and closes the second switch when a) the CLF detects a contactless RF signal,
b) the host is off or the portable terminal is in a low battery mode, and c) the contactless RF signal conforms to the communication
method of the chip card in the portable terminal, and

the switch controller closes the first switch and opens the second switch when the host is on.

US Pat. No. 9,167,533

BASE STATION APPARATUS, USER EQUIPMENT, AND METHOD USED IN MOBILE COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. User equipment to be used in a mobile communication system, the user equipment comprising a memory comprising instructions
and a processor configured to execute the instructions within the memory to perform the steps of:
providing an uplink reference signal, an uplink data signal, and an uplink control signal;
setting transmission power of the uplink reference signal, transmission power of the uplink data signal, and transmission
power of the uplink control signal;

wirelessly transmitting the uplink reference signal having the transmission power, the uplink data signal having the transmission
power, and the uplink control signal having the transmission power,

transmitting the uplink data signal and the uplink control signal which are scheduled in each subframe and transmitting the
uplink reference signal, not in each subframe, only in predetermined subframes,

setting the transmission power of the uplink control signal based on the transmission power of the uplink reference signal
and a first power offset value

setting the transmission power of the uplink data signal based on the transmission power of the uplink reference signal and
a second power offset value,

transmitting the uplink control signal and the uplink data signal using only allocated specific resource blocks and the uplink
reference signal across a wide bandwidth using multiple resource blocks and

controlling the transmission power of the uplink control signal based on the first power offset value and the transmission
power of the uplink data signal based on the second power offset value,

receiving a request from a base station apparatus, and performing transmission power control based on the request at least
by adjusting the second power offset value.

US Pat. No. 9,439,207

DEVICE AND ANTENNA PICTOGRAM DISPLAY METHOD

NTT DOCOMO, INC., Tokyo ...

1. User equipment comprising:
a processor configured to implement a communication unit that executes communication through a plurality of carriers by executing
carrier aggregation, CA, including a primary cell, P-cell, and one or more secondary cells, S-cell; and

an antenna pictogram display unit configured to display, through an antenna pictogram, at least whether communication is allowed,
wherein, in response to detecting, by a report from a base station, that the S-cell is established, the established S-cell
is activated, or scheduling of the activated S-cell is enabled, the antenna-pictogram display unit is configured to start
displaying an indication that the CA is allowed together with at least one antenna pictogram.

US Pat. No. 9,167,448

MOBILE TERMINAL APPARATUS, BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal apparatus comprising:
a receiver that receives radio frames of a lower cell including a protected subframe being a subframe transmission from a
higher cell that is inhibited and a non-protected subframe being a subframe transmission from the higher cell that is not
inhibited;

a measurement circuit that measures reception quality from reference signals multiplexed individually on the protected subframe
and the non-protected subframe;

a feedback information reduction that calculates a difference value between the reception quality of the protected subframe
and the reception quality of the non-protected subframe; and

a transmitter that notifies reception quality information of the protected subframe measured by the measurement circuit, and
the difference value calculated by the feedback information reduction circuit to a base station apparatus for allocating radio
resources to the mobile station,

wherein, when the difference value calculated by the feedback information reduction circuit is lower than a threshold value,
the transmitter notifies only the reception quality information of the protected subframe to the base station apparatus.

US Pat. No. 9,414,251

METHOD FOR DETERMINING MULTI-USER CHANNEL QUALITY IN MOBILE COMMUNICATION SYSTEM, AND USER TERMINAL AND BASE STATION THEREFOR

NTT DOCOMO, Inc., Tokyo ...

1. A method for determining multi-user channel quality (MU CQIs) in a mobile communication system, the method comprising the
steps of:
in each user terminal, calculating the MU CQIs based on a first feedback template notified from a base station that has control
over the user terminal or a second feedback template set by the user terminal and feeding the MU CQIs back to the base station,

wherein in the first feedback template or the second feedback template used in calculation of the MU CQIs, a plurality of
hypothetical interference numbers k and a feedback ratio of MU CQIs for the plurality of hypothetical interference numbers
k are defined, k being an integer larger than 0 and smaller than a maximum number of users schedulable by the base station,

the user terminal calculates the MU CQIs based on the second feedback template set by the user terminal and feeds the MU CQIs
back to the base station, and

the base station uses MU CQIs fed back from one or more user terminals as a basis to perform multi-user multiple-input multiple-output
scheduling, and selects the first feedback template for the user terminal.

US Pat. No. 9,491,775

BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS, AND INFORMATION TRANSMISSION METHOD

NTT DOCOMO, INC., Tokyo ...

13. An information transmission method comprising:
a mapping step of mapping transmission data for each user to resource blocks of at least one of a plurality of group bands
configured by dividing a system band; and

a transmitting step of transmitting the mapped transmission data to a mobile terminal apparatus on a downlink, wherein
in the mapping step, the transmission data is mapped by selectively using a first mapping method or a second mapping method,
the first mapping method maps the transmission data for each user to the at least one of the plurality of group bands based
on reception quality information from the mobile terminal apparatus or a throughput amount in an entire system, and

the second mapping method maps the transmission data for each user based on a mapping pattern corresponding to a combination
of the plurality of group bands that is determined based on the reception quality information from the mobile terminal apparatus
or the throughput amount in the entire system before the transmission data is mapped.

US Pat. No. 9,288,811

BASE STATION DEVICE AND MOBILE COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station device, which performs radio communication with a user equipment using a first carrier and a second carrier
in a mobile communication system, the base station device comprising:
an uplink signal reception unit configured to receive a first uplink signal and a second uplink signal, the first and second
uplink signals being transmitted from the user equipment via carrier aggregation; and

a downlink signal transmission unit configured to transmit a first downlink signal and a second downlink signal to the user
equipment via carrier aggregation, wherein

the downlink signal transmission unit is configured not to transmit the first downlink signal when the uplink signal reception
unit receives the second uplink signal so as to reduce degradation of a reception quality of the first downlink signal in
the user equipment, and configured to transmit the first downlink signal when the uplink signal reception unit does not receive
the second uplink signal,

the first uplink signal being transmitted from the user equipment to the base station device and the first downlink signal
being transmitted from the base station device to the user equipment in the first carrier, and the second uplink signal being
transmitted from the user equipment to the base station device and the second downlink signal being transmitted from the base
station device to the user equipment in the second carrier,

the user equipment including a duplexer for the second carrier having a function of electrically separating a transmission
path from a reception path, the duplexer not considering a frequency band of the first downlink signal, and

where the second uplink signal degrades the reception quality of the first downlink signal when the user equipment simultaneously
receives the first downlink signal and transmits the second uplink signal.

US Pat. No. 9,485,775

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising a radio base station to form a cell and user terminals to establish wireless connection
with the radio base station, wherein:
the radio base station comprises:
an antenna that has varying antenna configurations between at least two types of communication each matching a number of formed
beams, and that can transmit signals to all areas which the radio base station covers, by an antenna configuration corresponding
to one type of the at least two types of communication;

a resource allocation control section that allocates radio resources to a downlink signal including a signal whose type is
based on capacities of a user terminal and the type of communication;

a multiplexing section that multiplexes a reference signal on a resource block;
a precoding weight generating section that generates a precoding weight which allows the antenna to form a number of beams
to match the type of communication; and

a precoding multiplication section that multiplies a downlink signal to supply to the antenna by the precoding weight generated
by the precoding weight generating section,

wherein the antenna is formed with a plurality of antenna elements that are arranged in a line in vertical direction and that
are grouped into at least one group in association with each of the at least two types of communication; and

the user terminal comprises:
a quality measurement section that measures channel quality from the reference signal included in the downlink signal;
a feedback information generating section that generates feedback information pertaining to communication quality using the
measured channel quality; and

a transmission section that feeds back the feedback information generated by the feedback information generating section to
the radio base station via an uplink,

wherein a mix type of communication that selects the at least two types of communication, including the one type of the at
least two types of communication, at the same time, is used as the mixed communication type,

wherein in a phase to start communication, the mixed communication type is selected, and
wherein the multiplexing section multiplexes a plurality of reference signals to use in each communication type on a same
resource block.

US Pat. No. 9,166,759

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

NTT DoCoMo, Inc., Tokyo ...

1. A method for transmitting control information in a wireless communication system, comprising:
pre-assigning a group identification to each user group respectively;
determining a search space corresponding to each group identification respectively;
determining a link adaptation method of a user group according to quality of channels of each user in the user group;
generating contents of first control information according to common control information of all users in the user group and
the link adaptation method corresponding to the user group;

performing cyclic redundancy check for the contents of the first control information, generating the first control information,
and transmitting the first control information to each user in the user group;

performing cyclic redundancy check for particular control information of each user in the user group and obtaining contents
of second control information; and

performing link adaptation process for the contents of the second control information according to the link adaptation method
corresponding to the user group, generating the second control information, and transmitting the second control information
to each user in the user group.

US Pat. No. 9,420,593

COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

13. A communication method to control a plurality of carriers such that a mobile terminal apparatus communicates with a first
base station apparatus using a first carrier and communicates with a second base station apparatus using a second carrier,
which is different from the first carrier, the communication method comprising the steps of:
at the second base station apparatus, reporting at least one physical uplink shared channel resource of the second carrier
by higher layer signaling to signal to the mobile terminal apparatus;

at the second base station apparatus, triggering a channel quality by a downlink scheduling assignment to signal to the mobile
terminal apparatus;

at the mobile terminal apparatus, receiving the higher layer signaling and reserving the physical uplink shared channel resource;
and

at the mobile terminal apparatus, transmitting the channel quality report triggered by the downlink scheduling assignment
to the second base station apparatus using the physical uplink shared channel resource allocated to the second carrier by
the downlink scheduling assignment,

wherein, when simultaneous uplink transmission by the first carrier and the second carrier is not allowed, the mobile terminal
apparatus prioritizes transmitting an ACK/NACK and the channel quality report by a physical uplink shared channel allocated
to an uplink of the second carrier over transmitting the ACK/NACK and the channel quality report by a physical uplink control
channel allocated to the uplink of the first carrier.

US Pat. No. 9,439,181

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL, AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

10. A radio communication method comprising the steps of:
generating, by a radio base station apparatus, downlink control information including carrier indicator field (CIF) representing
a carrier index and a subframe index;

transmitting, by the radio base station apparatus, the downlink control information including the CIF; and
receiving, by a user terminal, the downlink control information including the CIF; and
performing, by the user terminal, signal processing on a downlink shared channel which is transmitted by time division duplexing
in a component carrier and a subframe respectively indicated by the carrier index and the subframe index which are represented
by the CIF in the downlink control information.

US Pat. No. 9,184,813

METHOD FOR REDUCING INTERFERENCE AT A TERMINAL OF A WIRELESS CELLULAR NETWORK, WIRELESS CELLULAR NETWORK, NODE AND CENTRAL NODE OF A WIRELESS NETWORK

NTT DOCOMO, INC., Tokyo ...

1. A method for reducing interference at a terminal of a wireless cellular network, the terminal experiencing interference
from a plurality of interfering nodes in the wireless cellular network, the method comprising:
selecting precoders of the interfering nodes such that a sum of distances between an interference projector matrices for the
terminal is minimized,

wherein an interference projector matrix corresponding to an interference subspace between an interfering node l and a terminal
k is an orthogonal projector onto a column space of Hkl Fl,

wherein
Hkl=channel matrix of a channel between the interfering node l and the terminal k,

Fl=precoder matrix of the interfering node l.

US Pat. No. 9,439,182

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
a radio base station apparatus; and
a user terminal that performs radio communication with the radio base station apparatus by time division duplexing, and which
achieves broadbandization by carrier aggregation, wherein:

the radio base station apparatus comprises:
a processor of the radio base station that generates a downlink control channel signal containing downlink control information
including carrier indicator field information; and

a transmitter that transmits the downlink control channel signal to the user terminal; and
the user terminal comprises:
a receiver that receives the downlink control channel signal; and
a processor of the user terminal that executes signal processing with respect to a downlink signal in accordance with the
downlink control information,

wherein the carrier indicator field information is information that associates a carrier index and a number of subframes to
schedule victim subframes.

US Pat. No. 9,532,384

MOBILE COMMUNICATION METHOD AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method of executing a random access procedure between a mobile station and a radio base station,
when the mobile station in an intermittent reception state makes a return to a continuous reception state to perform call
origination processing, the mobile communication method comprising:
a step A of causing the radio base station in the random access procedure to transmit a call-type request signal to the mobile
station, the call-type request signal requesting notification of a call type concerned in the call origination processing;

a step B of causing the mobile station in the random access procedure to notify the radio base station of the call type in
response to the call-type request signal; and

a step C of causing the radio base station in the random access procedure to determine whether to allow the return based on
the call type.

US Pat. No. 9,596,699

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in a mobile communication system that performs uplink carrier aggregation using frequency
carriers of different bands, the method comprising the steps of:
transmitting simultaneous transmission capability information from a mobile station to a radio base station, the simultaneous
transmission capability information indicating the number of carriers through which the mobile station can guarantee predetermined
communication quality in transmission of uplink data signals via a plurality of carriers in a same sub-frame while performing
the uplink carrier aggregation; and

performing scheduling for the mobile station by the radio base station based on the simultaneous transmission capability information
such that a signal leakage from an uplink band to a downlink band in the different bands via a diplexer is suppressed.

US Pat. No. 9,426,819

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus that applies coordinated multi-point (CoMP) transmission to a user terminal, comprising:
a generating section configured to generate downlink control information including given bit data based on a table in which
rate matching patterns are associated with bit data; and

a transmission section configured to transmit a physical downlink control channel including the downlink control information
and a physical downlink shared channel (PDSCH),

wherein the rate matching patterns of the table include a rate matching pattern corresponding to a frame configuration having
no resource for allocating the physical downlink control channel and/or a cell-specific reference signal (CRS).

US Pat. No. 9,369,890

RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND INTERFERENCE MEASUREMENT METHOD

NTT DOCOMO, INC., Tokyo ...

8. An interference measurement method comprising:
assigning a first reference signal for channel state measurement to a first resource element in a reference signal resource
to transmit the first reference signal, while assigning a second reference signal for interference measurement to a second
resource element in the reference signal resource;

notifying a first mobile terminal apparatus that supports both the first reference signal and the second reference signal
of pattern information to identify an assignment pattern of the first reference signal and the second reference signal;

in the first mobile terminal apparatus,
receiving the pattern information; and
performing interference measurement using both the first reference signal and the second reference signal or only the second
reference signal, based on the received pattern information,

wherein, as the second reference signal, a reference signal dedicated to interference measurement is assigned to the second
resource element based on an assignment pattern of the first reference signal that a second mobile terminal apparatus supports,
and

the first mobile terminal apparatus performs interference measurement using the first reference signal and the reference signal
dedicated to interference measurement.

US Pat. No. 9,183,757

DIETING SUPPORT SYSTEM AND DIETING SUPPORT METHOD

NTT DOCOMO, INC., Tokyo ...

1. A dieting support system comprising:
a terminal device comprising
a selective semiconductor gas sensor configured to detect a component of biogas and that measures concentration of the biogas;
and

a communication interface configured to transmit a measured result by the selective semiconductor gas sensor to a server;
and

the server comprising
an analyzing function that accumulates and analyzes a measured result by the selective semiconductor gas sensor;
a timing determination function that determines timing for taking a meal or for doing exercise, depending on an analyzed result
by the analyzing function; and

a meal-intake determination function that determines whether the meal is taken within a predetermined time period, wherein
when the timing determination function determines, based on the analyzed result by the analyzing function, that it is the
timing for taking the meal or for doing the exercise, and when the meal-intake determination function determines that the
meal is not taken within the predetermined timer period, a message which recommends taking the meal is sent from the server
to the terminal device, and

when the timing determination function determines, based on the analyzed result by the analyzing function, that it is the
timing for taking the meal or for doing the exercise, and when the meal-intake determination function determines that the
meal is taken within the predetermined time period, a message which recommends dong the exercise is sent from the server to
the terminal device.

US Pat. No. 9,439,198

RADIO BASE STATION, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication method for a radio base station that outputs a plurality of beams of varying tilt angles and forms
a plurality of cells in a vertical direction, and a user terminal that establishes wireless connection with the radio base
station, the radio communication method comprising the steps in which:
the radio base station:
acquires information about communication capacity of each of the plurality of cells; and
sets the amount of resources to allocate to a cell having lower communication capacity among the plurality of cells lower
than for a cell having higher communication capacity,

wherein the radio base station makes at least one of a frequency range to allocate resources to the call having lower communication
capacity among the plurality of cells and a time period to allocate resources, narrower than for the cell having higher communication
capacity,

wherein the radio base station provides a time period to allocate resources to the cell having higher communication capacity
and not allocate resources to the cell having lower communication capacity, and, in the time period, increases the transmission
power of the cell having higher communication capacity, and

wherein, in the time period, the radio base station changes a tilt angle of the beam forming the cell having higher communication
capacity so that a coverage area of the cell having higher communication capacity expands in a direction of the coverage area
of the cell having lower communication capacity formed outside the time period.

US Pat. No. 9,215,618

RADIO COMMUNICATION SYSTEM AND BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
at least one user equipment configured to execute voice communication and data communication by exchanging packets;
multiple base stations each configured to execute wireless communication with the user equipment; and
a control station configured to control establishment of bearers and sessions used for communication of the user equipment
executed via the base stations,

the base station comprising:
a radio communicator configured to execute radio communication with the user equipment;
a network communicator configured to execute communication with the control station and another base station;
a congestion level determiner configured to determine a voice congestion level indicating a degree of congestion of voice
communication in the base station, and to determine a data congestion level indicating a degree of congestion of data communication
in the base station;

a bearer establisher configured to establish a data bearer to be used for data communication and a voice bearer to be used
for voice communication on the basis of control by the control station;

a waiting timer section configured to start a timer after establishment of the data bearer, the timer expiring after passage
of a predetermined time; and

an access point controller configured to select an access point base station for the user equipment on the basis of the congestion
level in the base station and the congestion level in another base station, and to indicate the access point base station
to the user equipment,

the control station configured to, when the user equipment executes voice communication, start voice communication session
for the user equipment after the bearer establisher of the base station establishes the data bearer, and to control the bearer
establisher of the base station to establish the voice bearer after starting the voice communication session,

the access point controller of the base station configured to, after expiration of the timer started by the waiting tinier
section, select the access point base station for the user equipment on the basis of the voice congestion levels and indicate
the access point base station to the user equipment if the voice bearer has been established, the access point controller
of the base station configured to, after expiration of the timer started by the waiting timer section, select the access point
base station for the user equipment on the basis of the data congestion levels and indicate the access point base station
to the user equipment if the voice bearer has not been established.

US Pat. No. 9,473,996

COMMUNICATION CONTROL DEVICE AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A communication control device configured to control a first base station forming a first cell having a predetermined cell
radius and a second base station forming a second cell having a cell radius smaller than the predetermined cell radius and
being overlaid completely within a coverage area of the first cell, the communication control device comprising:
processing circuitry configured to:
acquire a first parameter determined based on a number of mobile stations connected to the first cell or a number of mobile
stations connected to the second cell;

determine a second parameter based on the first parameter, the second parameter causing a change in a number of mobile stations
connectable to the first cell or a number of mobile stations connectable to the second cell;

notify at least any one of the first base station and the second base station of the second parameter;
acquire a load factor of the first cell and a load factor of the second cell as the first parameter;
determine a Cell Range Expansion value as the second parameter;
set an Almost Blank Subframe pattern used in an inter-cell interference coordination in a time domain or a Relative Narrowband
TX Power pattern used in an inter-cell interference coordination in a frequency domain based on the load factor of the first
cell and the load factor of the second cell; and

determine the Cell Range Expansion value by which a difference between the load factor of the first cell and the load factor
of the second cell is made within a predetermined range.

US Pat. No. 9,136,996

USER DEVICE, BASE STATION, AND COMMUNICATION METHOD FOR MOBILE COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A user device for a mobile communication system employing a multicarrier scheme, the user device comprising:
a control signal generating unit generating a control signal;
a data signal generating unit generating a data signal; and
a transmitting unit transmitting the control signal and the data signal to a base station,
wherein the control signal is mapped to multiple frequency bands that are provided throughout a time period of a subframe
but are separated from each other in a frequency domain;

wherein the control signal is two-dimensionally spread by a spreading code both in a time domain and in the frequency domain,
wherein the data signal is mapped to multiple frequency bands provided separately from the frequency bands for the control
signal,

wherein the frequency bands for the data signal are provided throughout the time period of the subframe but are separated
from each other in the frequency domain, wherein each of the frequency bands for the control signal and the data signal includes
subcarriers used in orthogonal frequency division multiplexing,

wherein the subframe includes a first number of pilot transmission periods for transmitting a pilot channel and a second number
of information transmission periods for transmitting information other than the pilot channel,

wherein OFDM symbols are used to transmit information other than the pilot channel where each OFDM symbol includes the same
CAZAC code sequence and the entire CAZAC code sequence in a first OFDM symbol is multiplied by modulation data where the modulation
data is representative of acknowledgment information for a downlink data channel;

wherein the control signal is transmitted in each of the second number of information transmission periods, and
wherein the control signal is multiplied by a spreading code having a sequence length that equals the second number,
wherein the control signal transmits control information comprising of at least uplink L1/L2 control information, acknowledgement/negative-acknowledgement
(ACK/NACK) information for a data channel transmitted via downlink, and a channel quality indicator (CQI) indicating downlink
channel conditions.

US Pat. No. 9,185,409

IMAGE PREDICTION ENCODING/DECODING SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. An image predictive encoding device comprising:
a processor;
a region partitioning unit executable by the processor to partition an input image into a plurality of regions that include
a target region serving as an encoding target;

a prediction information estimation unit executable by the processor to sub-partition the target region into a plurality of
prediction regions, determine a prediction block partitioning type for the target region, predict motion information from
a previously-reconstructed signal for acquisition of each of a plurality of signals highly correlated with the respective
prediction regions, and obtain prediction information containing the prediction block partitioning type and the motion information,
the prediction block partitioning type indicating a number and region shapes of the prediction regions;

a prediction information encoding unit executable by the processor to encode the prediction information associated with the
target region;

a predicted signal generation unit executable by the processor to generate a predicted signal of the target region based on
the prediction information associated with the target region;

a residual signal generation unit executable by the processor to generate a residual signal based on the predicted signal
of the target region and a pixel signal of the target region;

a residual signal encoding unit executable by the processor to encode the residual signal generated by the residual signal
generation unit;

a residual signal restoration unit executable by the processor to decode the encoded residual signal to generate a reconstructed
residual signal; and

a recording unit executable by the processor to add the predicted signal to the reconstructed residual signal to generate
a restored pixel signal of the target region, and to store the restored pixel signal as the previously-reconstructed signal,

wherein the prediction information encoding unit includes a prediction information storage means executable by the processor
to store previously-encoded prediction information, and the prediction information encoding unit is further executable to
encode the prediction block partitioning type of the target region and store the prediction block partitioning type into the
prediction information storage means based on: the prediction information of a region neighboring the target region, a number
of previously-encoded prediction regions in the target region, and the previously-encoded prediction information of the target
region;

the prediction information encoding unit further executable to select a candidate for motion information, the candidate for
motion information for use in generation of a predicted signal of a target prediction region serving as a next prediction
region, and the candidate for motion information selected from previously-encoded motion information of a region neighboring
the target prediction region;

the prediction information encoding unit further executable to encode, according to the number of candidates for the motion
information selected, merging block information indicative of generation of the predicted signal of the target prediction
region, or encode either one of the merging block information or the motion information, wherein the merging block information
is encoded using the selected candidate for motion information and the motion information detected by the prediction information
estimation unit; and

the prediction information encoding unit further executable to store the motion information for use in generation of the predicted
signal of the target prediction region into the prediction information storage means.

US Pat. No. 9,083,985

MOTION IMAGE ENCODING APPARATUS, MOTION IMAGE DECODING APPARATUS, MOTION IMAGE ENCODING METHOD, MOTION IMAGE DECODING METHOD, MOTION IMAGE ENCODING PROGRAM, AND MOTION IMAGE DECODING PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. A motion image decoding apparatus, comprising:
a memory that stores previously decoded blocks of original resolution including a previously decoded reference block of original
resolution;

a low-resolution block decoder that generates a low-resolution block, whose resolution is lower than the original resolution,
from low-resolution block information received from an encoder and the previously decoded reference block of original resolution;

a divider that divides the low-resolution block into low-resolution small blocks;
a small block predictor that generates small prediction blocks of original resolution from the low-resolution small blocks
and the previously decoded reference block of original resolution; and

a block combiner that combines the small prediction blocks of original resolution to generate a prediction block of original
resolution.

US Pat. No. 9,282,534

MOBILE COMMUNICATION METHOD, SESSION CONTROL NODE, GATEWAY DEVICE, AND MOBILITY MANAGEMENT NODE

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method which performs a process for an incoming call destined to a mobile station that is in a state
of having a session control bearer relating to a prioritized call set between a serving gateway device of the mobile station
and a packet data network gateway device, the method comprising:
a step A of checking, by the serving gateway device, a header of GPRS Tunneling Protocol-U plane (GTP-U) data received from
the packet data network gateway device and notifying a mobility management node of a downlink data notification including
a priority identifier indicating whether or not a signal is related to the prioritized call based on reception of the GTP-U
data;

a step B of transmitting, by the mobility management node, a paging signal to a radio base station, in response to the downlink
data notification received from the serving gateway device;

a step C of transmitting, by the radio base station, a paging signal to the mobile station, in response to the paging signal
received from the mobility management node; and

a step D of transmitting, by the mobile station, a connection setup request signal to the radio base station, in response
to the paging signal received from the radio base station, wherein

in the step B, the mobility management node performs priority control for the transmission of the paging signal, based on
the priority identifier included in the received downlink data notification, and wherein

in the step B, the mobility management node transmits the paging signal including the priority identifier to the radio base
station, and

in the step C, the radio base station preferentially processes the paging signal caused by arrival of a prioritized call to
the mobile station in idle state over the paging signal caused by arrival of a normal call, based on the priority identifier
included in the received paging signal.

US Pat. No. 9,240,831

RADIO BASE STATION APPARATUS, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus comprising:
a plurality of transmitting antennas;
a weight multiplication section that, when at least one of a downlink control channel, a broadcast channel and a cell-specific
reference signal is transmitted with fewer transmission layers than a number of all transmitting antennas, a smaller number
of antennas than the number of all transmitting antennas are made virtual, and transmission signals are multiplied by transmission
weights that make an average transmission power of each of the transmitting antennas or transmission streams the same; and

a transmission section that transmits signals multiplied by the transmission weights in the weight multiplication section
from the transmitting antennas.

US Pat. No. 9,215,026

RADIO BASE STATION APPARATUS, MOBILE TERMINAL DEVICE AND WIRELESS COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus comprising:
a generation section that generates each of channel quality measurement reference signals using a scrambling code associated
with a cell ID;

a mapping section that maps each of the channel quality measurement reference signals to a resource in time and frequency
domains based on a shifting number indicative of a shifting pattern; and

a transmission section that performs orthogonalization processing on the channel quality measurement reference signals to
be orthogonal among transmission antennas and transmits each of the channel quality measurement reference signals to a mobile
terminal device,

wherein the mobile terminal apparatus is notified of the shifting number and a radio resource with no data signal arranged
as common control information or dedicated control information, and

the shifting number and the radio resource with no data signal arranged are used as a basis to control transmission of a data
signal in the resource in time and frequency domains.

US Pat. No. 9,554,343

RADIO COMMUNICATION METHOD, RADIO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A radio communication method comprising the steps in which a radio base station:
sets at least three or more kinds of varying transmit power in a plurality of subframes constituting a radio frame, and also
determines a power ratio between a reference signal and a shared data channel signal in each subframe; and

generates bitmap information that represents a type pattern of transmit power set in the plurality of subframes; and
reports the bitmap information and the power ratio to a user terminal and/or another radio base station,
wherein the bitmap information is generated with reference to a table in which the power ratio of each subframe and identifiers
are associated with each other,

wherein the radio base station sets, as a configuration of the bitmap information, a base part that is formed with the same
number of bits as the number of subframes reported using the bitmap information, and an extended part of a variable size.

US Pat. No. 9,229,762

HOST PROVIDING SYSTEM AND HOST PROVIDING METHOD

NTT DOCOMO, INC., Chiyod...

1. A host providing system for providing an instance constituted by predetermined hardware resources to a user terminal as
a host computer so that the instance is available, in compliance with a request from the user terminal, including one or more
servers which virtually forms a plurality of virtual instances and provides a virtual instance of the plurality of virtual
instances as a virtual host, and including one or more physical servers which provide a physical instance that is physically
formed alone in a physical server of the one or more physical servers as a physical host, the system comprising:
a request receiving unit configured to receive an instance starting request which is a starting request of the instance from
the user terminal and includes instance type information indicating whether the instance related to the starting request is
either the virtual instance or the physical instance, from the user terminal;

a host information storage unit configured to store information regarding a state of a host;
a plurality of physical host managing units configured to control the one or more physical servers, and store physical host
information including usage state information indicating a usage state of the physical host formed in the physical server
under the control thereof, in the host information storage unit;

a virtual host managing unit, formed in a server of the one or more servers that provides the virtual host, configured to
store virtual host information including information indicating a usage state of the virtual host in the host information
storage unit;

a selecting unit configured to select one of the physical host managing units on the basis of usage state information included
in the physical host information from each of the physical host managing units, stored in the host information storage unit,
when the instance type information included in the instance starting request received by the request receiving unit indicates
the physical instance; and

a starting request sending unit configured to send the instance starting request to the physical host managing unit selected
by the selecting unit.

US Pat. No. 9,185,687

TRANSMISSION AND RECEPTION BANDWIDTH SETTING METHOD, MOBILE TERMINAL AND BASE STATION IN RADIO COMMUNICATION SYSTEM THAT DEFINES A PLURALITY OF SIGNAL BANDWIDTHS

NTT DOCOMO, INC., Tokyo ...

1. A method for setting a transmission and reception bandwidth in a radio communication system defining a plurality of bandwidths,
comprising:
accommodating mobile terminals that correspond to one or more of the plurality of bandwidths to the radio communication system
regarding transmission bandwidths of a data channel transmitted using an uplink;

providing a processing capability of a transmission bandwidth of a predetermined value greater than a minimum bandwidth in
the plurality bandwidths to every mobile terminal accommodated in the radio communication system regarding transmission bandwidths
of a pilot channel transmitted using an uplink; and

setting the transmission bandwidth of an uplink collision permissible channel transmitted from any mobile terminal in the
radio communication system to be a minimum fixed transmission bandwidth of the plurality of bandwidths,

wherein the base station in the radio communication system specifies a variable transmission band of an uplink collision permissible
channel transmitted by the mobile terminal within a range of a bandwidth used by the base station.

US Pat. No. 9,084,210

USER TERMINAL AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A user terminal that performs radio communications with a base station apparatus in a mobile communication system, comprising:
a processor for:
acquiring a parameter from the base station apparatus, wherein the parameter includes a variable number of resource blocks
of an uplink control channel (PUCCH) allocated at both ends of a system band and an identification number of a root sequence
of a random access preamble (PRACH); and

transmitting the random access preamble to the base station apparatus by using a PRACH (Physical Random Access Channel) formed
with six resource blocks,

wherein a maximum value of transmission power of the PRACH is defined as a rated power minus MPR (maximum power reduction),
the MPR being determined by the variable number of resource blocks of the PUCCH and the identification number of the root
sequence of the PRACH, and the rated power being defined in the mobile communication system.

US Pat. No. 9,408,248

COMMUNICATION CONTROL DEVICE AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A communication control device which is capable of connecting to an access network according to Internet protocol and which
controls a terminating call to a mobile station configured to execute registration to an IP multimedia subsystem according
to the Internet protocol, the communication control device comprising:
a bearer state detection unit configured to detect a state of a bearer which is a logical communication path between the mobile
station and a gateway device included in the access network; and

a terminating call control unit configured to transmit a rejection response to a source making the terminating call when the
bearer state detection unit detects loss of the bearer which has been established, the rejection response rejecting a terminating
call to the mobile station, wherein

the terminating call control unit cancels the transmission of the rejection response when receiving a signal from the mobile
station in a situation where the loss of the bearer is detected by the bearer state detection unit, the signal being related
to an originating call to the IP multimedia subsystem and other than registration to the IP multimedia subsystem.

US Pat. No. 9,237,508

MOBILE TERMINAL AND INFORMATION READING PREVENTING METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal comprising an antenna for near field communication and an RF part,
wherein the RF part comprises:
a communication type identifying part identifying, on a received packet-by-packet basis, a communication type of a carrier
wave received by the antenna;

a communication permission/prohibition determining part that, when results of the packet-by-packet communication type identification
are not the same for consecutive packets, determines that a sender of the carrier wave is a remote mobile terminal, and outputs
a communication prohibition signal; and

an RF controller acquiring the communication prohibition signal and locking the RF part.

US Pat. No. 9,236,983

REMOVING INTERFERENCE IN NON-ORTHOGONAL RADIO ACCESS

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
plural mobile stations; and
a base station for wirelessly communicating with each of the plural mobile stations by using a resource block corresponding
to a predetermined time period and to a frequency bandwidth, wherein

the base station comprises:
first circuitry configured to function as
a mobile station classifier that classifies each of the mobile stations into one of plural classes based on the reception
quality from the base station;

a resource block allocator that allocates resource blocks to the plural mobile stations so that a resource block used for
transmission of a data signal component to a mobile station in a class is not commonly used as a resource block used for transmission
of a data signal component to another mobile station belonging to the same class but is commonly used as a resource block
used for transmission of a data signal component to another mobile station belonging to another class;

a data signal component generator that generates plural data signal components to be transmitted to the plural mobile stations;
a control signal generator that generates a control signal containing information indicating the allocation of the resource
blocks by the resource block allocator to the plural mobile stations; and

a transmitter that is an element that transmits the plural data signal components generated by the data signal component generator
and the control signal generated by the control signal generator, the transmitter being configured to transmit the data signal
components in accordance with the allocation of the resource blocks by the resource block allocator, a data signal component,
from among the data signal components, being transmitted to a mobile station with an inferior reception quality from the base
station with a greater transmission power, wherein

each of the plural mobile stations comprises:
second circuitry configured to function as
a receiver that receives a data signal for which the plural data signal components have been combined, the data signal being
transmitted from the transmitter of the base station, and the control signal transmitted from the transmitter of the base
station; and

a data signal demodulator that, when the data signal received by the receiver of the mobile station includes a data signal
component corresponding to a low-quality mobile station, the low-quality mobile station being a mobile station in a low-quality
class that is a class for which the reception quality from the base station is inferior to a class to which the mobile station
belongs, demodulates a data signal component corresponding to the mobile station after demodulating and cancelling the data
signal component corresponding to the low-quality mobile station, wherein

the resource block allocator of the base station executes the allocation of the resource blocks to the plural mobile stations
so that a resource block allocated to a mobile station in a class for which the reception quality from the base station is
inferior is used commonly as a resource block allocated to one or more mobile stations in a class for which the reception
quality from the base station is superior and so that all of one or more resource blocks allocated to a mobile station in
a class for which the reception quality from the base station is superior is commonly used as a resource block allocated to
a mobile station in a class for which the reception quality from the base station is inferior,

the control signal generator of the base station generates the control signal by multiplexing plural control elements, the
control elements corresponding one-to-one to the plural mobile stations, with each control element containing (a) mobile station
resource block allocation information indicating the allocation of a resource block used for transmission of a data signal
component to a mobile station, (b) low-quality mobile station identification information indicating a low-quality mobile station
to which the same resource block as the resource block allocated to the mobile station is allocated, the low-quality mobile
station being a low-quality mobile station in a low-quality class adjacent to the class to which the mobile station belongs,
and (c) mobile-station-self-identification information identifying the mobile station,

the low-quality mobile station identification information contained in a control element corresponding to a mobile station
in a class for which the reception quality from the base station is the most inferior indicates that there is no low-quality
mobile station for the mobile station,

the second circuitry is further configured to function as
a control signal first demodulator that demodulates a control element corresponding to the mobile station out of the control
signal received by the receiver of the mobile station by using mobile-station-self-identification information of the mobile
station; and

a control signal second demodulator that executes demodulating, by using low-quality mobile station identification information
contained in the demodulated control element, a control element, out of the control signal, corresponding to a low-quality
mobile station indicated by the low-quality mobile station identification information until a control element containing low-quality
mobile station identification information indicating that there is no low-quality mobile station is demodulated, and

the data signal demodulator of the mobile station uses the control element corresponding to the mobile station, to demodulate
the data signal component corresponding to the mobile station, after demodulating and cancelling a data signal component corresponding
to the low-quality mobile station by using the control element corresponding to the low-quality mobile station.

US Pat. No. 9,280,451

TESTING DEVICE

NTT DOCOMO, INC., Tokyo ...

1. A testing device for evaluating operations of software installed in a mobile terminal, the testing device comprising:
a central processing unit (CPU) configured to
select, from a first plurality of scenarios set beforehand that includes an operation procedure for causing the mobile terminal
to execute a function that should be operated by the mobile terminal, a second plurality of the scenarios which should be
executed by the mobile terminal;

store scenario control information including a scenario name, an operation procedure for executing a corresponding function,
and a corresponding operational content;

store scenario execution information including the operational content and information indicating whether the operational
content should be restricted;

determine whether the operational content of a selected scenario of the second plurality of the scenarios is executable; and
execute the scenario including the operational content determined to be executable, wherein the CPU is further configured
to obtain the operational content of the selected scenario of the second plurality of the scenarios from the scenario control
information, and determine whether the operational content of the selected scenario of the second plurality of the scenarios
is executable based on the scenario execution information.

US Pat. No. 9,277,238

MOVING IMAGE ENCODING AND DECODING SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A moving picture decoding device comprising:
a processor;
an input section executed by the processor to receive compressed data including an encoded differential signal obtained by
prediction encoding a moving picture;

a decoding section executed by the processor to decode the encoded differential signal so as to produce a decoded differential
signal;

a prediction signal generation section executed by the processor to produce a first prediction signal with respect to the
decoded differential signal;

an adding section executed by the processor to add the first prediction signal to the decoded differential signal so as to
produce a reproduction signal;

a storage section operable to store the reproduction signal as a reference image referred to in producing a second prediction
signal; and

a reference image generation section executed by the processor to generate an observation matrix from a matrix composed of
a plurality of pixel vectors, each of the pixel vectors in the matrix representing respective different pre-existing reference
images stored in the storage section, to produce, based on the observation matrix, a new reference image, and to store the
new reference image in the storage section, wherein

the prediction signal generation section is executed by the processor to produce the second prediction signal using at least
the new reference image.

US Pat. No. 9,185,633

RADIO BASE STATION, MOBILE STATION, MOBILE COMMUNCATION METHOD FOR IMPROVING POSITIONING REFERENCE SIGNAL RECEPTION PROCESSING TIME IN THE MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A radio base station used in a mobile communication system employing a Frequency Division Duplexing (FDD) scheme, comprising:
a first transmission unit configured to transmit a length of a cyclic prefix used in a neighboring cell of a serving cell
of a mobile station, and a transmission timing difference between the serving cell of the mobile station and the neighboring
cell, to the mobile station, wherein the transmission timing difference indicates an interval between times when radio base
stations transmit downlink reference signals to the mobile station; and

a second transmission unit configured to transmit a reference signal in the neighboring cell, the reference signal being transmitted
based on the length of the cyclic prefix and the transmission timing difference, wherein the length of the cyclic prefix and
the transmission timing difference are notified to the mobile station by the first transmission unit.

US Pat. No. 9,277,051

SERVICE SERVER APPARATUS, SERVICE PROVIDING METHOD, AND SERVICE PROVIDING PROGRAM

NTT DOCOMO, Inc., Chiyod...

1. A server apparatus in communication with a plurality of terminal devices configured to facilitate speech communication
between a first speaker and at least one second speaker via a translation task, the server apparatus comprising:
an instruction receiving unit configured to receive an instruction for performing the translation task;
a recording unit configured to record verbal speech in a first language of the first speaker during the speech communication;
a speech recognizing unit configured to generate text data in the first language based on the verbal speech recorded by the
recording unit in accordance with the instruction for performing the translation task;

a text translating unit configured to translate the text data in the first language generated by the speech recognizing unit
into a second language of the second speaker and generate translated text data in the second language, wherein the second
language is different from the first language;

a speech synthesizing unit configured to convert the translated text data in the second language generated by the text translating
unit into translated speech data in the second language, the translated speech data voicable by the terminal devices as synthesized
sounds; and

a providing unit configured to provide the text data in the first language, the translated text data in the second language,
and the speech data in the second language to each of the terminal devices.

US Pat. No. 9,281,926

RADIO BASE STATION APPARATUS, MOBILE STATION APPARATUS AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus comprising:
a plurality of transmission antennas;
a downlink reference signal generating section configured to generate first reference signals that are Common Reference Signals
(CRSs) arranged in respective subframes, each of the subframes being a transmission time unit, second reference signals that
are Channel State Information (CSI) measurement reference signals associated with respective antenna ports and used in measurement
of channel quality, and third reference signals that are DeModulation Reference Signals (DM-RSs) associated with respective
layers and used in demodulation of downlink transmission data; and

a transmission section configured to arrange the first reference signals and the third reference signals in the subframes
to transmit from the respective transmission antennas and configured to arrange the second reference signals in specific subframes
to transmit from the respective transmission antennas, wherein

the transmission section arranges, in some timing, the first reference signals in one subframe at a first density, and arranges,
in other timing corresponding to a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) subframe, the first
reference signals in one subframe at a second density that is lower than the first density, and

the transmission section signals, to a mobile station apparatus, subframe information to identify the MBSFN subframe in which
the first reference signals are arranged at the second density.

US Pat. No. 9,271,162

MOBILE COMMUNICATION METHOD AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
a step A of generating and storing, by a mobile station in a standby state, log information including predetermined information
in a predetermined period;

a step B of generating and storing, by the mobile station, the log information when a standby cell is changed; and
a step C of transmitting, by the mobile station, the stored log information to a radio base station after the mobile station
is changed to an active state.

US Pat. No. 9,629,188

MOBILE COMMUNICATION METHOD AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

9. A mobile station comprising:
a communication interface configured to receive a first frequency band indicator indicating only a first frequency band and
a second frequency band indicator indicating at least a second frequency band and a third frequency band in order of narrowing
bandwidth; and

circuitry configured to
perform a connection process in the first frequency band when the mobile station is compatible with the first frequency band
indicated by the first frequency band indicator;

determine whether the mobile station is compatible with the second frequency band indicated by the second frequency band indicator
when the mobile station is not compatible with the first frequency band indicated by the first frequency band indicator;

perform a connection process in the second frequency band, which is first indicated by the received second band indicator,
when the mobile station is compatible with the second frequency band indicated by the second frequency band indicator;

determine whether the mobile station is compatible with the third frequency band indicated by the second frequency band indicator
when the mobile station is not compatible with the second frequency band indicated by the second frequency band indicator;
and

perform a connection process in the third frequency band when the mobile station is compatible with the third frequency band
indicated by the second frequency band indicator.

US Pat. No. 9,444,527

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

9. A radio communication method comprising:
measuring, by a user terminal, quality information associated with each cell to perform Coordinated Multi-Point transmission,
and

notifying, by the user terminal, at least one radio base station apparatus of the radio base station apparatuses of the quality
information;

performing, by the at least one radio base station apparatus, signal processing on Coordinated Multi-Point transmissions of
a downlink signal sent to the user terminal;

calculating, by the at least one radio base station apparatus, a quality difference between the cells performing Coordinated
Multi-Point transmission, by using quality information associated with each cell from the user terminal;

determining, by the at least one radio base station apparatus, granularity of inter-cell channel state information for each
cell based on the quality difference between the cells performing Coordinated Multi-Point transmission; and

notifying, by the at least one radio base station apparatus, the user terminal of the granularity;
generating, by the user terminal, inter-cell channel state information for each of the cells according to the granularity
from the at least one radio base station apparatus; and

transmitting, by the user terminal, the inter-cell channel state information for each cell to the radio base station apparatus
associated with Coordinated Multi-Point transmission.

US Pat. No. 9,232,507

RADIO BASE STATION APPARATUS AND CONTROL INFORMATION DETECTION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus for performing radio communications with a system band comprised of a plurality of base
frequency blocks, comprising:
a detecting section having a first correlation value detecting section that detects a correlation value between an ACK/NACK
signal received in uplink and each of ACK/NACK candidate replicas associated with a particular base frequency block assigned
to the mobile terminal apparatus among the plurality of base frequency blocks, and a second correlation value detecting section
that detects a correlation value between the ACK/NACK signal received in uplink and each of ACK/NACK candidate replicas associated
with the plurality of base frequency blocks; and

a determining section that determines feedback control information on a downlink shared data channel signal of the particular
base frequency block or of each of the plurality of base frequency blocks, based on the detected correlation value and a DTX
determination threshold value.

US Pat. No. 9,398,610

MOBILE COMMUNICATION METHOD, MOBILE STATION, AND NETWORK DEVICE

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
a step A of a mobile station transmitting a connection setup request signal containing a radio access capability of the mobile
station to a network device of a first communication scheme, upon detecting a predetermined trigger while camping on in a
cell of the first communication scheme, wherein the mobile station has not been allocated radio resources for the first communication
scheme while it is camping on in the cell of the first communication scheme;

a step B of the network device of the first communication scheme transmitting an instruction signal for instructing redirection
to a cell of a second communication scheme for the mobile station, in a case where the radio access capability of the mobile
station is contained in the received connection setup request signal; and

a step C of the mobile station setting up the connection in the cell of the second communication scheme in response to the
received instruction signal without the mobile station establishing a connection in the first communication scheme,

wherein in the step A, the mobile station judges whether or not to transmit the connection setup request signal containing
the radio access capability of the mobile station prior to the network device allocating radio resources for the mobile station
for use in the first communication scheme and the second communication scheme, in accordance with at least one of a communication
service and a communication processing that are allowed in the cell of the second communication scheme.

US Pat. No. 9,295,091

RADIO COMMUNICATION SYSTEM, COMMUNICATION CONTROL APPARATUS, AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
an originating terminal configured to send a paging signal to call a terminating terminal; and
a communication control apparatus configured to control direct communication between the originating terminal and the terminating
terminal, wherein

the originating terminal includes an originating-side paging processing unit configured to send the communication control
apparatus the paging signal containing a direct communication request requesting for direct communication with the terminating
terminal, and

the communication control apparatus includes:
a paging signal transmission unit configured to send the terminating terminal a paging signal containing information indicating
that the originating terminal is requesting direct communication and configuration information on a communication environment
necessary for the direct communication,

a determination unit configured to determine whether the direct communication is executable by the terminating terminal or
not based on the paging signal received from the originating terminal, wherein the determination unit determines whether the
direct communication is executable or not based on a distance between the originating terminal and the terminating terminal,
and

a network-side notification unit configured to notify the originating terminal of an affirmative notification indicating that
the direct communication is executable by the terminating terminal, when the determination unit determines that the direct
communication is executable,

wherein the originating-side paging processing unit directly calls the terminating terminal based on the affirmative notification
notified of by the communication control apparatus,

wherein when a distance between the originating terminal and the terminating terminal is equal to or smaller than a predetermined
distance, the determination unit determines that the direct communication is executable on condition that the on originating
terminal and the terminating terminal send radio signals at a radio field intensity of a value equal to or smaller than a
predetermined value which depends on the distance, and

wherein a network-side notification unit notifies the originating terminal of an affirmative notification containing the predetermined
value.

US Pat. No. 9,356,644

WIRELESS CIRCUIT AND FREQUENCY PAIR DETERMINATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A wireless circuit comprising:
a transmission-reception antenna;
a variable frequency duplexer having a common terminal connected to the transmission-reception antenna;
a double-pole 2N-throw switch having two common contacts respectively connected to a transmission terminal and a reception
terminal of the variable frequency duplexer, N being an integer not smaller than 1;

an RFIC which includes N transmission ports and N reception ports respectively connected to 2N transfer contacts of the switch;
and

a controller which is connected to the variable frequency duplexer and the switch through control lines and executes switching
control operations of the switch and a frequency switching operation of the variable frequency duplexer in accordance with
control signals;

the RFIC determining a pair of frequency bands for a transmission signal and a reception signal input to the variable frequency
duplexer and generating and sending the control signals for performing the switching control operations to connect a transmission
port corresponding to the determined transmission-signal frequency band with the transmission terminal of the variable frequency
duplexer and to connect a reception port corresponding to the determined reception-signal frequency band with the reception
terminal of the variable frequency duplexer and for performing the frequency switching operation of the variable frequency
duplexer, wherein

the RFIC comprises circuitry configured to:
measure channel quality parameter values of all searched cells;
compare the measured channel quality parameter values with a predetermined threshold and extract cells having channel quality
parameter values exceeding the threshold as candidate cells;

determine a combination of frequency bands that satisfy a given condition, of a candidate cell among the extracted candidate
cells, as the pair of frequency bands for a transmission and a reception signal; and

generate and send the control signals for performing the switching control operations to connect the transmission port corresponding
to the determined transmission-signal frequency band with the transmission terminal of the variable frequency duplexer and
to connect the reception port corresponding to the determined reception-signal frequency band with the reception terminal
of the variable frequency duplexer and for performing the frequency switching operation of the variable frequency duplexer,
and

the given condition is determined in accordance with a frequency band separation coefficient ?1 given by:

where ?1 is a boundary frequency of the transmission frequency band that is closer to the reception frequency band, and ?1 is a boundary frequency of the reception frequency band that is closer to the transmission frequency band.

US Pat. No. 9,166,763

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method for a first mobile communication system operated in a first frequency band, comprising:
a step A of causing a radio base station in the first mobile communication system to notify a mobile station of information
concerning a second system operated in a second frequency band adjacent to the first frequency band and information concerning
a third system operated in a third frequency band adjacent to the first frequency band; and

a step B of causing the mobile station to select a duplexer to be used from a plurality of duplexers on the basis of the information
concerning the second system and the information concerning the third system, wherein

the second system is a system which is determined to be likely to receive an interference influence from the first mobile
communication system based on the second frequency band being adjacent to an uplink frequency band of the first mobile communication
system, and

the third system is a system which is determined to be likely to exert an interference influence on the first mobile communication
system based on the third frequency band being adjacent to a downlink frequency band of the first mobile communication system.

US Pat. No. 9,110,888

SERVICE SERVER APPARATUS, SERVICE PROVIDING METHOD, AND SERVICE PROVIDING PROGRAM FOR PROVIDING A SERVICE OTHER THAN A TELEPHONE CALL DURING THE TELEPHONE CALL ON A TELEPHONE

NTT DOCOMO, Inc., Chiyod...

1. A service server apparatus connected to a plurality of speech communication terminal devices that perform speech communication
with each other via a speech and providing a service by a different task that is a work performed by a different application
from a task performed by an application relating to the speech communication between the speech communication terminal devices,
the service server apparatus comprising:
an instruction receiving unit configured to receive an instruction for performing the different task during the speech communication;
a recording unit configured to record a call speech of a speaker during the speech communication between the plurality of
speech communication terminal devices;

a task performing unit configured to perform the different task based on the call speech recorded by the recording unit, when
the instruction receiving unit receives the instruction;

a task data providing unit configured to provide, to each of the plurality of speech communication terminal devices performing
the speech communication, task data including text data obtained by performing the different task by the task performing unit
and speech data obtained by performing the different task by the task performing unit,

wherein the task performing unit converts the call speech into a text to generate text data, translates the text data into
another language to generate translated text data, and converts the translated text data into a speech to generate speech
data, and

wherein the task data providing unit provides, to each of the plurality of speech communication terminal devices performing
the speech communication, the task data including the text data, the translated text data, and the speech data together with
the call speech;

a correction instruction receiving unit configured to receive a correction instruction for the task data transmitted to the
speech communication terminal devices; and

a learning unit configured to give a weight to data used when the task data is generated based on the correction instruction
received by the correction instruction receiving unit.

US Pat. No. 9,532,389

RADIO BASE STATION AND RADIO COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

8. A radio communication system comprising:
a first radio base station wirelessly communicating with user equipments, the first radio base station not having a function
to broadcast, to the user equipments, system information including information necessary for the user equipments to connect
with the first radio base station; and

a second radio base station wirelessly communicating with user equipments, the second radio base station having a function
to broadcast, to the user equipments, system information including information necessary for the user equipments to connect
with the first radio base station,

wherein the first radio base station comprises:
a radio communicator configured to wirelessly communicate with the user equipments;
an inter-base station communicator configured to communicate with at least one other radio base station; and
a system information forwarder configured to transmit the system information through the inter-base station communicator to
the second radio base station in order to assist the user equipments to connect with the first radio base station,

wherein the second radio base station comprises:
a radio communicator configured to wirelessly communicate with the user equipments;
a system information receiver configured to receive the system information from the first radio base station; and
a system information transmitter configured to transmit the system information through the radio communicator to the user
equipments having connected with the second radio base station in order to assist the user equipments to connect with the
first radio base station,

wherein the first radio base station further comprises:
a response request transmitter configured to transmit a response request for requesting a response to the second radio base
station through the inter-base station communicator; and

a broadcasting base station detector configured to detect a response from the second radio base station, the response being
a reply to the response request,

wherein the system information forwarder transmits the system information to the second radio base station, which has sent
the response detected by the broadcasting base station detector, and

wherein the second radio base station further comprises a response transmitter configured to transmit a response to the first
radio base station that is a transmission source of the response request for searching a destination of the system information.

US Pat. No. 9,298,594

TESTING APPARATUS AND TESTING METHOD

NTT DOCOMO, INC., Chiyod...

1. A testing apparatus for evaluating operations by software installed in a mobile terminal, the testing apparatus comprising:
circuitry configured to
set a scenario including operation information for executing functions that are performed by the mobile terminal;
determine whether an operation indicated by the operation information included in the scenario is influenced by a device installed
in the mobile terminal;

convert the operation determined to be influenced by the device installed in the mobile terminal in accordance with the device
installed in the mobile terminal;

execute the scenario according to the converted operation; and
determine whether an execution result of the executed scenario is the same as a result assumed in advance, wherein
in the case where at least one of a screen-push operation and a key-press operation is included in the operation indicated
by the operation information included in the scenario, the circuitry determines that the operation is influenced by the device
installed in the mobile terminal, and

in the case where at least one of the screen-push operation and the key-press operation is included in the operation determined
to be influenced by the device installed in the mobile terminal, the circuitry is configured to calculate a range of coordinates
for executing at least one of the screen-push operation and the key-press operation by analyzing information of a screen displayed
on the mobile terminal.

US Pat. No. 9,408,085

BASE STATION APPARATUS, MOBILE STATION APPARATUS AND REFERENCE SIGNAL TRANSMISSION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus of a serving cell comprising:
a generation section configured to generate signals to specifically notify a mobile station apparatus of CSI-RS (Channel State
Information-Reference Signal) parameters of the serving cell, including a signal sequence, a location position in a resource
block and transmission power of the serving cell, and CSI-RS parameters of an adjacent cell, including a signal sequence,
a location position in a resource block and transmission power of the adjacent cell; and

a transmission section configured to transmit generated signals including the CSI-RS parameters of the serving cell and the
CSI-RS parameters of the adjacent cell specifically to the mobile station apparatus via the serving cell on a downlink.

US Pat. No. 9,319,120

RADIO COMMUNICATION METHOD, USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A radio communication method for downlink communication between a radio base station and a user terminal, the radio communication
method comprising:
in the user terminal:
estimating a channel state corresponding to each of at least one Channel State Information (CSI) process;
generating CSI based on the channel state corresponding to each of the at least one CSI process; and
transmitting the CSI, wherein
each of the at least one CSI process is associated with a resource of a Channel State Information-Reference Signal (CSI-RS)
that is precoded with a precoding weight.

US Pat. No. 9,173,123

BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station comprising:
a CSI-RS (Channel State Information-Reference Signal) allocation section configured to allocate a CSI-RS, which is a reference
signal for downlink channel estimation, to resources of subframes for CSI-RS transmission;

a muting resource setting section configured to set in the subframes for CSI-RS transmission, resources to which CSI-RS is
allocated in a neighboring area, to be muting resources; and

a reporting section configured to report transmission interval information that indicates an interval between subframes, where
transmission timing of the CSI-RS matches between a first transmission cycle and a second transmission cycle, to a mobile
apparatus, the first transmission cycle indicating a transmission cycle of a subframe for CSI-RS transmission in a subject
area and the second transmission cycle being different from the first transmission cycle and indicating a transmission cycle
of a subframe for CSI-RS transmission in the neighboring area.

US Pat. No. 9,357,531

RADIO BASE STATION AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A radio base station, comprising:
a transmitter unit configured to transmit a MAC control element to a mobile station, the MAC control element including a reserved
bit of one bit and status bits each indicating whether a corresponding one of secondary cells is activated or deactivated;
and

a controller unit configured to set the status bits and the reserved bit in the MAC control element,
wherein the controller unit is configured to set “0” in the reserved bit and “1” in the status bit corresponding to a target
secondary cell when both an uplink and a downlink in the target secondary cell are desired to be activated,

the controller unit is configured to set “0” in the reserved bit and “0” in the status bit corresponding to the target secondary
cell when both the uplink and the downlink in the target secondary cell are desired to be deactivated,

the controller unit is configured to set “1” in the reserved bit and “1” in the status bit corresponding to the target secondary
cell when only the uplink in the target secondary cell is desired to be activated, and

the controller unit is configured to set “1” in the reserved bit and “0” in the status bit corresponding to the target secondary
cell when only the uplink in the target secondary cell is desired to be deactivated.

US Pat. No. 9,320,000

BASE STATION AND METHOD OF CONTROLLING TRANSMISSION POWER

NTT DOCOMO, INC., Chiyod...

9. A method of controlling uplink transmission power in a base station, comprising the steps of:
monitoring a non-communication interval during which downlink data or uplink data are not transmitted;
transmitting control information for causing a mobile station to transmit data or control information, when the monitored
non-communication interval is equal to or longer than a predetermined threshold; and

determining a transmission power control command based on received quality of data or control information received from the
mobile station.

US Pat. No. 9,077,532

USER TERMINAL AND BASE STATION APPARATUS

NTT DOCOMO, INC., Tokyo ...

1. A user terminal configured to connect to a communication system in which a system band is added or removed on a base frequency
block basis to communicate, comprising:
a reception section configured to receive a data channel for user data transmission for each of base frequency blocks that
constitute the system band;

a demodulation section configured to demodulate the data channel of each of the base frequency blocks received in the reception
section;

an ACK/NACK signal generating section configured to generate an uplink ACK/NACK signal for each of the base frequency blocks
in response to a demodulation result of the data channel in the demodulation section; and

a mapping section configured to define one of the base frequency blocks that constitute the system band as an anchor block,
and allocate a radio resource of an uplink base frequency block to an uplink ACK/NACK signal generated in response to a data
channel demodulation result of the anchor block, using a resource allocation scheme for one base frequency block, while allocating
a radio resource of the uplink base frequency block to an uplink ACK/NACK signal generated in response to a data channel demodulation
result of another base frequency block, using a resource allocation scheme for a plurality of base frequency blocks, wherein

the mapping section allocates the radio resource of the uplink base frequency block, which is associated with a radio resource
allocated to the data channel of the anchor block, to the uplink ACK/NACK signal of the anchor block using the resource allocation
scheme for one base frequency block,

the mapping section allocates a user-specific radio resource of the uplink base frequency block to the uplink ACK/NACK signal
of the other base frequency block using the resource allocation scheme for the plurality of base frequency blocks, and

the mapping section maintains allocation of the anchor block using the resource allocation scheme for one base frequency block
in a period from notification of an instruction for changing a base frequency block number in the system band until preparation
for changing the base frequency block number is completed.

US Pat. No. 9,313,787

BASE STATION AND TRANSMISSION METHOD

NTT DOCOMO, INC., Tokyo ...

9. A communication system comprising a base station and a communication terminal based on a multi-carrier system using a frequency
bandwidth including a plurality of resource blocks, each of the plurality of resource blocks including one or more sub-carriers,
wherein the base station comprises:
a frequency scheduler configured to determine scheduling information for allocating one or more of the plurality of resource
blocks to a communication terminal;

a multiplexing unit configured to multiplex the control channel into a single radio frame based on a number of control channels
allocated into the single radio frame to use a lower coding rate by repeatedly transmitting without changing encoding method
and further multiplex a channel other than the control channels in accordance with the scheduling information; and

a transmission unit configured to transmit an output signal from the multiplexing unit based on the multi-carrier system.

US Pat. No. 9,300,588

MOBILE COMMUNICATION METHOD, MOBILE COMMUNICATION SYSTEM AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in which a mobile station transmits and receives a data signal via a radio access bearer
established between the mobile station and a radio base station and via a core network bearer established between the radio
base station and a gateway apparatus, the method comprising:
a step A of causing the radio base station to notify a mobility management node of a cause of congestion and identifier information
of the radio access bearer involved in the congestion, when the radio base station detects the congestion;

a step B of causing the mobility management node to issue an instruction to modify a setting of the core network bearer corresponding
with the radio access bearer involved in the congestion, when the mobility management node receives the cause of the congestion
and the identifier information of the radio access bearer involved in the congestion; and

a step C of causing the gateway apparatus to modify the setting of the core network bearer corresponding with the radio access
bearer involved in the congestion when the gateway apparatus receives the instruction.

US Pat. No. 9,288,022

METHOD FOR CONTROLLING OPERATION WITHIN A CELL OF A WIRELESS CELLULAR NETWORK, BASE STATION AND WIRELESS CELLULAR NETWORK

NTT DOCOMO, INC., Tokyo ...

1. A method for controlling operation within a cell of a wireless cellular network, the wireless cellular network comprising
a plurality of cells, each cell comprising a base station for serving one or more mobile users, the method comprising:
controlling, by a base station of the cell, an operation within the cell using a fuzzy logic, wherein input variables for
the fuzzy logic comprise input variables determined on the basis of information only locally available in the cell,

wherein the operation to be controlled within the cell comprises resource and power allocation,
wherein
resource and power allocation to a user served by the base station of a cell is performed on the basis of interference information
about an interference incident from one or more neighboring cells, the input variables for the fuzzy logic being determined
on the basis of interference information only locally available in the cell, and

the base station allocates resource blocks such that a desired signal to the user is acquired, the interference incident from
one or more neighboring cells is reduced or minimized, and a rate requirement of the user in the cell is fulfilled, wherein
the locally available information comprise a necessitated rate of the user; a quality or strength of the desired signal; a
level of interference incident on the resource blocks; and a frequency-selective fading profile.

US Pat. No. 9,131,436

MOBILE COMMUNICATION METHOD OF REQUESTING SYCHRONIZATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method, used in a case where a first radio link has been set in a radio base station interface between
a first mobile station and a radio base station, a second radio link has been set in a radio base station interface between
a second mobile station and the radio base station, and a third radio link has been set in an inter-mobile station interface
between the first mobile station and the second mobile station, comprising:
a step of transmitting, by the first mobile station, a synchronization request signal to the radio base station via the first
radio link when generation of a data signal to be transmitted to the second mobile station is detected in a state in which
synchronization of the third radio link has not been established;

a step of notifying, by the radio base station, the first mobile station and the second mobile station of a radio resource
for first preamble transmission in the third radio link via the first radio link and the second radio fink in response to
the synchronization request signal;

a step of transmitting, by the first mobile station, a first preamble to the second mobile station by using the radio resource
for first preamble transmission;

a step of transmitting, by the second mobile station, first timing information indicating deviation of a reception timing
of the first preamble from a desired timing to the radio base station via the second radio link on a basis of the received
first preamble; and

a step of transmitting, by the radio base station, first adjustment information for adjusting a transmission timing of a data
signal in the third radio link to the first mobile station via the first radio link on a basis of the received first timing
information,

wherein when the first adjustment information is not received within a predetermined period, the first mobile station notifies
the radio base station eNB of a message for informing a fault of the third radio link.

US Pat. No. 9,220,021

USER APPARATUS, BASE STATION APPARATUS, AND METHOD IN MOBILE COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A user apparatus for transmitting an uplink control signal to a base station apparatus using a single carrier scheme, comprising
an ACK/NACK determination unit configured to prepare acknowledgement information indicating positive acknowledgement or negative
acknowledgement for a downlink data signal based on a result of demodulation of the downlink data signal;

a CQI estimation unit configured to prepare channel state information indicating reception quality of a downlink reference
signal, wherein the number of bits of the channel state information is greater than the number of bits of the acknowledgement
information;

a coding unit configured to channel-code the acknowledgement information and the channel state information;
a modulation unit configured to generate an uplink control signal based on a result of the channel-coding in the coding unit;
and

a transmission unit configured to transmit the uplink control signal using dedicated resources different from resources for
an uplink data signal,

wherein, in a case where the coding unit collectively channel-codes the acknowledgement information and the channel state
information after multiplexing the acknowledgement information and the channel state information so as to generate a multiplexed
signal having a length that is equal to the sum of the number of bits of the acknowledgement information and the channel state
information, the coding unit performs the multiplexing in which plural bits for representing the channel state information
remain continuous, and

in a case where the coding unit channel-codes the acknowledgement information and the channel state information separately,
the coding unit iterates the acknowledgement information a predetermined number of times.

US Pat. No. 9,397,818

ENHANCED INTER-CELL INTERFERENCE CONTROL IN A RADIO COMMUNICATION SYSTEM

NTT DOCOMO, INC., Chiyod...

3. A communication control method for use in a radio base station that communicates with a mobile terminal, the radio base
station being configured to be capable of executing radio transmission to mobile terminals using resources that are the same
as resources used by a second radio base station forming a second cell within a first cell the radio base station itself forms,
the radio base station being configured to coordinate for inter-cell interference control with the second radio base station,
the method comprising:
modulating each data signal to mobile terminals connected to the radio base station by using any one of modulation systems
each having different modulation levels;

assigning any one of a first resource group in which a radio transmitter should transmit data signals by radio at a first
transmission power and a second resource group in which the radio transmitter should transmit data signals by radio at a second
transmission power which is less than the first transmission power to each of the mobile terminals connected with the radio
base station;

controlling the radio transmitter so that the radio transmitter transmits data signals by radio at the first transmission
power at the first resource group and transmits data signals by radio at the second transmission power at the second resource
group;

provisionally determining a modulation system to be used for radio transmission of data signals to each of the mobile terminals
connected with the radio base station;

setting a modulation system having a modulation level which is less than that of the modulation system provisionally determined
as the modulation system for mobile terminals to which the second resource group is assigned in a case that the modulation
system provisionally determined for the mobile terminals to which the second resource group is assigned is inappropriate for
the second transmission power; and

executing at least one of an increase of the number of transmission streams used for radio transmission of data signals using
a multiple-input multiple-output (MIMO) technology to the mobile terminals to which the second resource group is assigned
and an increase of an encoding rate applied to data signals transmitted by radio to the mobile terminals to which the second
resource group is assigned in a case in which the modulation system provisionally determined for the mobile terminals to which
the second resource group is assigned, is inappropriate for the second transmission power.

US Pat. No. 9,794,968

COMMUNICATION SYSTEM, MOBILE TERMINAL APPARATUS, LOCAL AREA BASE STATION AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

7. A communication method for a user terminal apparatus that is able to communicate with a base station apparatus in a given
radio access scheme and detects the base station apparatus and/or a different communication apparatus from the base station
apparatus, the communication method comprising the steps of:
receiving demodulation reference signals based on a given demodulation reference signal resource configuration from the base
station apparatus and/or the communication apparatus, in the given radio access scheme; and

transmitting demodulation reference signals based on a same demodulation reference signal resource configuration as the given
demodulation reference signal resource configuration to the base station apparatus and/or the communication apparatus, in
a same radio access scheme as the given radio access scheme.

US Pat. No. 9,788,332

RADIO BASE STATION, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station connected to a neighbor radio base station via inter-radio base station interface, the radio base
station comprising:
a processor and a memory, wherein the processor:
performs radio communication with a user terminal using a UL/DL configuration indicating a configuration of uplink and downlink
subframes in a radio frame;

measures and detects interference that the radio base station suffers from; and
uses a result of a detection of the interference as a basis to determine which of two schemes is applied to at least one frequency
domain resource allocation in each subframe,

wherein one of the scheme has a restriction that an uplink subframe and a downlink subframe do not overlap each other in a
same frequency domain resource, and the other scheme does not have the restriction, and

wherein, if the measured interference is stronger than a threshold value, the processor determines to apply the restriction
to each flexible subframe in the UL/DL configuration.

US Pat. No. 9,986,554

MOBILE COMMUNICATION SYSTEM AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

2. A radio base station capable of operating as a master radio base station in a mobile communication system, in which a mobile station is configured to be able to perform carrier aggregation while using a cell under the master radio base station and a cell under a slave radio base station, and the master radio base station is configured to transfer a downlink data signal transmitted by a gateway device to any of the mobile station and the slave radio base station while the carrier aggregation is performed, the radio base station comprising:a processor that starts a timer on the master radio base station side at a point when the downlink data signal is received from the gateway device while the carrier aggregation is performed; and
a transmitter that notifies the slave radio base station of elapsed time of the timer on the master radio base station side in conjunction with the transfer of the downlink data signal,
wherein the transmitter adjusts the elapsed time of the timer on the master radio base station side in consideration of a transfer delay between the master radio base station and the slave radio base station, and
wherein the slave radio base station sets the initial value of the timer on the slave radio base station side in consideration of a transfer delay between the master radio base station and the slave radio base station in addition to the elapsed time of the timer on the master radio base station.

US Pat. No. 9,655,146

MOBILE COMMUNICATION METHOD AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method, comprising:
starting, by a radio base station, a random access procedure with a mobile station being in communication in a cell formed
by linking several small cells under control of the radio base station; and

notifying, by the mobile station, in the random access procedure, the radio base station of a cell radio network temporary
identifier (C-RNTI) which is allocated in a macro cell other than the cell,

wherein a coverage area of the cell partially overlaps a coverage area of the macro cell.

US Pat. No. 9,717,084

USING DIFFERENT TRANSMISSION TIMINGS IN RADIO COMMUNICATION SYSTEM, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A user terminal comprising:
a receiver that receives transmission timing information of uplink signals indicated for each component carrier from a radio
base station apparatus; and

a processor that determines presence or absence of transmission of an uplink signal or a signal to transmit,
wherein, when physical uplink shared channel (PUSCH) transmission or physical uplink control channel (PUCCH) transmission
and sounding reference signal (SRS) transmission overlap in a plurality of component carriers and total transmission power
of uplink signals required in simultaneous transmission exceeds maximum transmission power determined in the user terminal,
the SRS transmission is dropped.

US Pat. No. 10,009,905

USER EQUIPMENT AND BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. User equipment, comprising:a receiver that receives an interference beam candidate list including directional beams transmitted from a camped base station and interference beam candidates transmitted from an adjacent base station; and
a processor that:
measures reception quality of reference signals transmitted in the respective directional beams in the received interference beam candidate list; and
generates interference information based on the measured reception quality; and
a transmitter that transmits the generated interference information to the camped base station or the adjacent base station.

US Pat. No. 9,117,067

MOBILE INFORMATION TERMINAL AND GRIPPING-FEATURE LEARNING METHOD

NTT DOCOMO, INC, Tokyo (...

1. A mobile information terminal that acquires gripping feature samples when being gripped and that performs authentication,
the terminal comprising:
a mode acquisition section adapted to acquire the mode of the mobile information terminal;
a gripping-feature sample acquisition section adapted to acquire the gripping feature samples;
a switch adapted to switch the mobile information terminal between a learning state and an authentication state;
a sample filling section adapted to, when the mobile information terminal is in the learning state of an authentication template
and the number of gripping feature samples acquired in a first mode is insufficient, filling the lacking gripping feature
samples in the first mode with gripping feature samples acquired in a second mode different from the first mode using a transition
source occupation rate R which is proportion oft to T, where t indicates a number of events in which a user transitions from
the second mode to the first mode, and T indicates a number of events in which the user transitions from any mode to the first
mode;

a template learning section adapted to learn an authentication template in each mode by using the gripping feature samples
acquired by the gripping-feature sample acquisition section, when the mobile information terminal is in the learning state;

an authentication section adapted to compare gripping feature samples acquired when the mobile information terminal is in
the authentication state, with the learned authentication template to perform the authentication; and

a locking section adapted to lock some or all of the functions of the mobile information terminal when the authentication
fails.

US Pat. No. 9,071,404

BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus forming a small-scale cell provided in a large-scale cell, comprising:
a reception section that acquires cell identification information of another base station apparatus forming the large-scale
cell;

a cell identification information determining section which refers to the cell identification information of the another base
station apparatus, and determines cell identification information of the base station apparatus forming the small-scale cell
so as to reduce interference to a control format indicator channel assigned to radio resources by the another base station
apparatus; and

a control signal generating section that generates a control signal to assign to the radio resources based on the cell identification
information determined in the cell identification information determining section.

US Pat. No. 9,357,504

RADIO COMMUNICATION SYSTEM AND RADIO BASE STATION

NTT DOCOMO, INC., Chiyod...

11. A radio base station communicating with user terminals and being configured to execute wireless transmission to the user
terminals using resources that are the same as resources used by a low-power radio base station having a maximum transmission
power less than a maximum transmission power of the radio base station and forming a second cell within a first cell formed
by the radio base station, the radio base station being configured to collaborate with the low-power radio base station for
inter-cell interference control, the radio base station comprising:
a radio communicator configured to execute wireless communication with user terminals connected with the radio base station;
and

a transmission power controller configured to control downlink transmission power used by the radio communicator for transmission
to the user terminals; wherein

the transmission power controller is configured to cause the radio communicator to operate at a first downlink transmission
power at first resources among said resources, and to cause the radio communicator to operate at a second downlink transmission
power that is lower than the first downlink transmission power at second resources among said resources, and wherein

the transmission power controller is configured to adjust the second downlink transmission power in accordance with
a proportion of the number of user terminals capable of executing interference rejection combining from among the total number
of user terminals connected with at least one of the radio base station and the low-power radio base station,

a proportion of the downlink traffic amount for user terminals capable of executing interference rejection combining from
among the total downlink traffic amount for user terminals connected with at least one of the radio base station and the low-power
radio base station, or

the number of downlink resource blocks allocated to user terminals connected with at least one of the radio base station and
the low-power radio base station and being capable of executing interference rejection combining.

US Pat. No. 9,337,990

FRONT-END CIRCUIT AND IMPEDANCE ADJUSTMENT METHOD

NTT DOCOMO, INC., Tokyo ...

1. A front-end circuit comprising:
a radio frequency integrated circuit;
a transmission and reception antenna;
N duplexers in between the radio frequency integrated circuit and the transmission and reception antenna, an i-th duplexer
of the N duplexers being for transmission and reception of signals in an i-th frequency band of predetermined first to N-th
frequency bands, where N is a predetermined integer greater than or equal to 2 and i is an integer satisfying 1?i?N;

N variable impedance adjustment circuits, an i-th variable impedance adjustment circuit of the N variable impedance adjustment
circuits being connected to the i-th duplexer;

a switch which is connected to the transmission and reception antenna and which selects any two of the N variable impedance
adjustment circuits; and

a control circuit which receives a control signal from the radio frequency integrated circuit, wherein
the control circuit executes switching operations of the N variable impedance adjustment circuits and the switch in accordance
with control information indicated by the control signal, and

the control signal indicates to, when a p-th frequency band and a q-th frequency band of the predetermined first to N-th frequency
bands are selected, where p is an integer satisfying 1?p?N, q is an integer satisfying 1?q?N and p?q:

control the switch to select two variable impedance adjustment circuits corresponding to the p-th frequency band and the q-th
frequency band respectively;

control a selected variable impedance adjustment circuit corresponding to the p-th frequency band to increase input impedance
in the q-th frequency band as viewed from the transmission and reception antenna side; and

control a selected variable impedance adjustment circuit corresponding to the q-th frequency band to increase input impedance
in the p-th frequency band as viewed from the transmission and reception antenna side.

US Pat. No. 9,301,210

MOBILE COMMUNICATION METHOD, RADIO ACCESS NETWORK APPARATUS AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile station wherein
the mobile station transmits a start request signal for circuit-switched type of communications to a mobility management node
after a receipt notification signal or a paging signal is received by the mobile station due to a terminating call to the
mobile station from a mobile station having an elevated call priority over other mobile stations, the start request signal
being transmitted via a radio access network apparatus of a first communication system not supporting circuit-switched type
of communications, and

when a priority call information indicating priority of one circuit-switched fallback procedure over another circuit-switched
fallback procedure is contained in a handover request signal received by the mobile station from the radio access network
apparatus of the first communication system after the start request signal is transmitted, the mobile station transmits a
signal containing the priority call information to a radio access network apparatus of a second communication system.

US Pat. No. 9,294,977

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, MOBILE COMMUNICATION TERMINAL, AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Chiyod...

1. A radio communication system comprising:
multiple radio base stations including a first radio base station and a second radio base station of which transmission power
for radio waves is less than that of the first radio base station;

multiple mobile communication terminals including a first mobile communication terminal that can execute interference rejection
combining and a second mobile communication terminal that cannot execute interference rejection combining, each mobile communication
terminal executing radio communication with any one of the radio base stations by transmitting and receiving radio waves;
and

an apparatus configured to select a radio base station as a radio access point for each of the mobile communication terminals,
wherein

the first mobile communication terminal comprising a first communication interface configured to report, to the first radio
base station, terminal capability information that includes information indicating that the first mobile communication terminal
can execute interference rejection combining,

the second mobile communication terminal comprising a second communication interface configured to report, to the first radio
base station, terminal capability information that does not include information indicating that the second mobile communication
terminal can execute interference rejection combining,

the first radio base station comprising:
first circuitry configured to
determine whether a mobile communication terminal is the first mobile communication terminal or the second mobile communication
terminal on the basis of the terminal capability information reported from the mobile communication terminal;

set a first bias value as a bias value for the first mobile communication terminal based on a result of the determining; and
transmit the first bias value to the first mobile communication terminal,
each of the first mobile communication terminal and the second mobile communication terminal comprising respective second
and third circuitry configured to measure a reception quality of the radio waves received from the first radio base station
to obtain a first reception quality value, and configured to measure a reception quality of the radio waves received from
the second radio base station to obtain a second reception quality value,

the first mobile communication terminal comprising:
the second circuitry configured to
offset the second reception quality value by increasing the second reception quality value by using the first bias value transmitted
by the bias value informant of the first radio base station; and

report, to the apparatus, the first reception quality value and the offset second reception quality value,
the second mobile communication terminal comprising:
the third circuitry configured to
offset the second reception quality value by increasing the second reception quality value by using a second bias value that
is lower than the first bias value; and

report, to the apparatus, the first reception quality value and the offset second reception quality value, wherein
the apparatus is configured to select, as a radio access point for a mobile communication terminal, a radio base station corresponding
to a reception quality value indicating a best reception quality among the first reception quality value and the second reception
quality value reported by the mobile communication terminal.

US Pat. No. 9,264,983

MOBILE COMMUNICATION METHOD, MOBILE EXCHANGE STATION, RADIO BASE STATION AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

2. A mobile exchange station used in a mobile communication system including a plurality of radio access technologies, the
mobile exchange station configured to:
manage whether or not a circuit switching service is provided by each of the radio access technologies; and
notify, to a mobile station, information on whether or not the circuit switching service is provided by a target radio access
technology in which the mobile station is to be in idle mode, among the radio access technologies managed by the mobile exchange
station, during an Attach procedure, the mobile station is notified of the information while the mobile station has not made
a service request yet.

US Pat. No. 9,232,447

RADIO BASE STATION APPARATUS AND MOBILE TERMINAL

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus comprising:
a transmission/reception section having a plurality of transmission/reception elements;
a reference signal generating section configured to generate a first downlink reference signal to use in generating communication
environment information by a mobile terminal;

a downlink transmission generating section configured to generate downlink transmission data; and
a downlink control information generating section configured to generate cell identification information for identifying a
format of the first downlink reference signal in a Fast Cell Selection (FCS) mode;

wherein in the FCS mode, a second downlink reference signal that is a terminal specific reference signal is transmitted with
the downlink transmission data from one of the plurality of transmission/reception elements.

US Pat. No. 9,161,367

RADIO COMMUNICATION SYSTEM, BASE STATION, USER TERMINAL, AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Chiyod...

1. A radio communication system comprising:
a user terminal; and
a base station capable of communicating wirelessly with the user terminal by using at least one of radio resource groups,
each of which contains radio resource units;

the user terminal comprising:
a first quality measuring unit adapted to measure the radio resource groups for their respective group radio qualities; and
a first quality reporting unit adapted to report the group radio qualities measured by the first quality measuring unit to
the base station at a first frequence;

the base station comprising:
an allocated resource group determining unit adapted to determine at least one of the radio resource groups as an allocated
radio resource group to be allocated for radio communication with the user terminal on a basis of the group radio qualities
reported by the first quality reporting unit of the user terminal; and

an allocated resource group signaling unit adapted to report, to the user terminal, the at least one allocated radio resource
group determined by the allocated resource group determining unit and to be allocated for radio communication with the base
station;

the user terminal further comprising:
a second quality measuring unit adapted to measure a unit radio quality of at least one radio resource unit contained in the
at least one allocated radio resource group reported by the allocated resource group signaling unit of the base station; and

a second quality reporting unit adapted to report the at least one unit radio quality measured by the second quality measuring
unit to the base station at a second frequence, the second frequence being higher than the first frequence; and

the base station further comprising:
a scheduling unit adapted to schedule a radio resource to be allocated for radio communication between the base station and
the user terminal on the basis of the at least one unit radio quality reported by the second quality reporting unit of the
user terminal.

US Pat. No. 9,131,409

METHOD AND MOBILE STATION TO CHANGE AND REMOVE A MEASUREMENT ID FOR SUPPORTING CARRIER AGGREGATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in which a mobile station communicates with a radio base station by using a primary carrier
and one or a plurality of secondary carriers having different carrier frequencies, ID, the method comprising the steps of:
managing, at a mobile station, a MeasID which links a MeasObject and a ReportConfig to transmit a measurement report including
a measurement result of the linked MeasObject to the radio base station, when the mobile station determines that the linked
ReportConfig is satisfied;

changing, at the mobile station, a link destination of a MeasID linking a MeasObject indicating a Second-Primary Component
Carrier (S-PCC) to a MeasObiect indicating a Third-Primary Component Carrier (T-PCC) when the primary carrier changes from
the S-PCC to the T-PCC, and the mobile station manages the MeasObject indicating the T-PCC; and

releasing, at the mobile station, a MeasID linking, a MeasObiect indicating a carrier selected from among the plurality of
secondary carriers third measurement ID, when the and when the selected carrier is changed to a non-configured carrier,

wherein the mobile station does not measure the selected carrier until the mobile station acquires a new MeasID which links
a new MeasObject and a new ReportConfig from the radio base station, the new MeasObject indicates a new carrier.

US Pat. No. 9,210,653

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, RADIO NETWORK CONTROLLER, CORE NETWORK DEVICE AND GATEWAY DEVICE

NTT DOCOMO, INC., Tokyo ...

1. A method, comprising:
step A of measuring an amount of traffic for a mobile station in a first connection state which is a state where the mobile
station communicates with a server by way of a radio base station, a first access point of a first network, a core network
device, and a gateway device, which are each disposed between the mobile station and the server; and

step B of switching a connection state of the mobile station from the first connection state to a second connection state
which is a state where the mobile station communicates with the server by way of the radio base station and a second access
point of a second network, which are each disposed between the mobile station and the server, while bypassing the core network
device, the gateway device, and the first access point of the first network if it is determined that the measured amount of
traffic satisfies a predetermined condition.

US Pat. No. 9,999,006

USER APPARATUS, BASE STATION, UPLINK TRANSMISSION POWER REPORTING METHOD AND PARAMETER NOTIFICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A user apparatus in a mobile communication system including a first base station and a second base station that perform communication with the user apparatus by dual connectivity, comprising:a reception unit configured to receive, from the first base station, a detection parameter for a Master Cell Group (MCG), on uplink transmission power reporting, set for the MCG that is a cell group of the first base station, and a detection parameter for a Secondary Cell Group (SCG), on uplink transmission power reporting, set for the SCG that is a cell group of the second base station; and
a report control unit configured to report uplink transmission power information to one of or both of the first base station and the second base station when detecting a report trigger of the uplink transmission power information in an activated cell in a cell group of the MCG and the SCG by a detection parameter of the detection parameter for the MCG and the detection parameter for the SCG,
wherein the uplink transmission power information that is reported includes uplink transmission power information of each cell in the first base station, and uplink transmission power information of each cell that includes a Primary Secondary Cell (PSCell) in the second base station, and
wherein, when detecting the report trigger by the detection parameter for the MCG, the report control unit reports the uplink transmission power information to the first base station, and when detecting the report trigger by the detection parameter for the SCG, the report control unit reports the uplink transmission power information to the second base station.

US Pat. No. 9,883,536

RADIO BASE STATION AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A radio base station comprising an allocation unit configured to allocate a plurality of C-RNTIs to each of mobile stations,
wherein the allocation unit performs adjustment such that collision of search spaces to which PDCCH resources are allocated
does not occur between the mobile stations,

wherein the allocation unit allocates:
a search space corresponding to a first C-RNTI of the plurality of C-RNTIs to a first mobile station of the mobile stations
and a second mobile station of the mobile stations, and

a search space corresponding to a second C-RNTI of the plurality of C-RNTIs to the first mobile station of the mobile stations
but not to the second mobile station of the mobile stations, and wherein the allocation unit performs the adjustment in consideration
of a distance between the mobile stations.

US Pat. No. 9,313,650

COMMUNICATIONS SYSTEM, MOBILE COMMUNICATIONS DEVICE, TRANSITION CONTROL DEVICE, TRANSITION CONTROL METHOD, AND TRANSITION CONTROL PROGRAM

NTT DOCOMO, INC., Chiyod...

1. A communication system including a mobile communication device that performs mobile communication and a transition control
device that controls a transition between mobile communication networks over which the mobile communication device performs
mobile communication,
the mobile communication device comprising:
an attachment unit for attaching thereto a subscriber authentication module that stores therein first connection information
and second connection information, the first connection information corresponding to a mobile communication network and being
necessary for performing mobile communication over the mobile communication network, the second connection information being
necessary for performing communication with a connection information management server provided corresponding to a mobile
communication network and configured to perform rewrite control on the first connection information; and

circuitry configured to
receive, through a mobile communication network associated with the first connection information stored in the subscriber
authentication module attached by the attachment unit, the second connection information associated with a connection information
management server corresponding to a destination mobile communication network different from the mobile communication network,
and store the received second connection information in the subscriber authentication module; and

perform communication directly with the connection information management server corresponding to the destination mobile communication
network, using the received second connection information and stored in the subscriber authentication module attached by the
attachment unit, to receive the first connection information associated with the destination mobile communication network,
and store the received first connection information in the subscriber authentication module,

the transition control device comprising:
circuitry configured to
input a transition request to make a transition between mobile communication networks over which the mobile communication
device performs mobile communication;

transmit the second connection information associated with the connection information management server corresponding to the
destination mobile communication network, to the mobile communication device associated with the transition request input,
through a source mobile communication network; and

generate the first connection information associated with the destination mobile communication network for the mobile communication
device associated with the transition request input, and transmit the generated first connection information to the connection
information management server corresponding to the destination mobile communication network.

US Pat. No. 9,276,651

RADIO BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
a report mode used by the system of CSI (Channel State Information) defined by a combination of a CQI (Channel Quality Indicator)
and a PMI (Precoding Matrix Indicator), the report mode being signaled by higher layer signaling, wherein

the report mode is defined by the combination including the PMI that changes in number of bits with an extension level,
multiple CSI are configured by higher layer signaling in CoMP (Coordinated Multiple Point Transmission/Reception) transmission,
when feeding back the PAC, the report mode is mode 1-2, mode 2-2 or mode 3-1, and
in the mode 1-2, the PMI is combined with wide-band CQI, in the mode 2-2, the PMI is combined with sub-band CQI selected by
a mobile terminal apparatus, and, in the mode 3-1, the PMI is combined with sub-band COT configured by higher layers.

US Pat. No. 9,113,468

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS AND MOBILE TERMINAL APPARATUS

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system having a radio base station apparatus and a mobile terminal apparatus, of which a frequency
band allocated to radio communication between the radio base station apparatus and the mobile terminal apparatus is configured
by adding or deleting fundamental frequency blocks, wherein
FDD-based radio communication is as shed to a first fundamental frequency block,
TDD-based or half duplex FDD-based radio communication is applied to a second fundamental frequency block that is different
in frequency from the first fundamental frequency block,

carrier aggregation is performed by configuring the frequency band with a plurality of fundamental frequency blocks having
at least the first fundamental frequency block and the second fundamental frequency block,

the mobile terminal apparatus allocates first uplink L1/L2 control signals corresponding to the first fundamental frequency
block and second uplink L1/L2 control signals corresponding to the second fundamental frequency block to PUCCHs set in uplink
radio resources in the first fundamental frequency block,

the mobile terminal apparatus allocates, to the PUCCHs, the first uplink L1/L2 control signals and the second uplink L1/L2
control signals in a first subframe, and the first uplink L1/L2 control signals and not the second uplink L1/L2 control signals
in a second subframe, based on a predetermined subframe of the second fundamental frequency block, and

the mobile terminal apparatus uses different PUCCH formats in the first subframe and the second subframe.

US Pat. No. 9,094,155

TRANSMISSION APPARATUS, TRANSMISSION METHOD, RECEPTION APPARATUS AND RECEPTION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A transmission apparatus comprising:
a multiplexing portion that multiplexes a common pilot channel, a shared control channel, and a shared data channel;
a symbol generation portion that performs an inverse Fourier transformation on the multiplexed signal so as to generate a
symbol; and

a transmission portion that transmits the generated symbol;
wherein the multiplexing portion multiplexes the shared control channel including control information necessary for demodulation
of the shared data channel including a payload and the common pilot channel to be used by plural users in either one of a
frequency direction and a time direction, or a combination thereof, and multiplexes the shared data channel in a time direction
with respect to the common pilot channel and the shared control channel,

wherein the multiplexing portion multiplexes a dedicated pilot channel used to demodulate the shared data channel with the
shared data channel allocated to a specific user in either one of the frequency direction and the time direction, or a combination
thereof, and

wherein the dedicated pilot channel is time-multiplexed at a first point of time at predetermined frequency intervals and
also time-multiplexed at a second point of time at the predetermined frequency intervals.

US Pat. No. 9,521,639

MOBILE COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication system comprising:
a first mobile station;
a second mobile station;
a radio base station;
a first radio base station interface between the first mobile station and the radio base station;
a second radio base station interface between the second mobile station and the radio base station; and
an inter-mobile station interface between the first mobile station and the second mobile station,
wherein the radio base station transmits a data signal to the first mobile station and the second mobile station through the
first and second radio base station interfaces at a first frequency,

the first mobile station and the second mobile station transmit the data signal to the radio base station through the first
and second radio base station interfaces at a second frequency,

the first mobile station and the second mobile station transmit and receive the data signal to and from each other through
the inter-mobile station interface at the second frequency,

the transmission of the data signal through the first and second radio base station interfaces at the second frequency and
the transmission and reception of the data signal through the inter-mobile station interface at the second frequency are performed
in a time-division manner, and

predetermined gaps are provided before and after timing in which the first mobile station and the second mobile station transmit
the data signal through the inter-mobile station interface, in consideration of a time required to switch between the transmission
of the data signal through one of the first and second radio base station interfaces and the inter-mobile station interface
and the reception of the data signal through the inter-mobile station interface in the second frequency.

US Pat. No. 9,508,350

AUDIO ENCODING DEVICE, METHOD AND PROGRAM, AND AUDIO DECODING DEVICE, METHOD AND PROGRAM

NTT DOCOMO, INC., Tokyo ...

2. An audio decoding device for decoding an audio code from an audio packet containing the audio code and an auxiliary information
code about a temporal change of power of an audio signal, the auxiliary information code being used in packet loss concealment
in decoding of the audio code, the audio decoding device comprising:
a processor;
an error/loss detection unit executable by the processor to detect a packet error or packet loss in an audio packet and output
an error flag indicative of a result of the detection;

an audio decoding unit executable by the processor to decode the audio code contained in the audio packet, to obtain a decoded
signal;

an auxiliary information decoding unit executable by the processor to decode auxiliary information code contained in the audio
packet, to obtain auxiliary information;

a first concealment signal generation unit executable by the processor to generate a first concealment signal for concealment
of a packet loss when the error flag indicates an abnormality of the audio packet, the first concealment signal being generated
based on a previously-obtained decoded signal; and

a concealment signal correction unit executable by the processor to correct the first concealment signal based on the auxiliary
information, wherein the auxiliary information decoding unit decodes a flag of sudden change of power, the flag of sudden
change of power being included in the auxiliary information code,

when the flag of sudden change of power indicates a predetermined mode, the auxiliary information decoding unit further decodes
quantized transient power included in the auxiliary information code to obtain the quantized transient power and the flag
of sudden change of power, as the auxiliary information, and

when the flag of sudden change of power does not indicate the predetermined mode, the auxiliary information decoding unit
does not include quantized transient power in the auxiliary information.

US Pat. No. 9,301,332

RADIO BASE STATION AND METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station in a first mobile communication system, comprising:
a radio communication interface configured to wirelessly communicate with a mobile station which can communicate in the first
mobile communication system and in a second mobile communication system;

a network communication interface configured to be in communication with a switching station; and
circuitry configured to:
determine whether the mobile station is provided with a handover function based on capability information provided by mobile
station;

determine whether a radio resource for a radio access bearer can be established between the radio base station and the mobile
station when it is determined that the mobile station is provided with the handover function;

determine that the mobile station is unable to be handed over to the second mobile communication system when it is determined
that an apparatus load is no less than a predetermined threshold;

determine that the mobile station is unable to handover to the second communication system when it is determined that the
mobile station is not provided with the handover function or when it is determined that the radio resource for the radio access
bearer cannot be established; and

determine that mobile station is capable of handover to the second mobile communication system when it is determined that
the mobile station is provided with the handover function and that the radio resource for the radio access bearer can be established
between the radio base station and the mobile station, wherein

the network communication interface is configured to
receive a message from the switching station;
send a request to the switching station to release a connection with the mobile station in order to conduct a redirection
procedure when the message from the switching station indicates that the mobile station is requesting a service which is not
provided in the first mobile communication system but which is provided in the second mobile communication system, and it
is determined that the mobile station is not provided with the handover function, that the radio resource for the radio access
bearer cannot be established between the radio base station and the mobile station, and that the mobile station is unable
to be handed over to the second mobile communication system;

report to the mobile station that the connection should be released in accordance with an instruction from the switching station;
and

transmit an instruction to the mobile station to handover when the circuitry determines that mobile station is capable of
handover to the second mobile communication system.

US Pat. No. 9,280,974

AUDIO DECODING DEVICE, AUDIO DECODING METHOD, AUDIO DECODING PROGRAM, AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AND AUDIO ENCODING PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. An audio decoding device comprising;
a processor;
a plurality of decoding units each executable by the processor to perform different audio decoding schemes, respectively,
to generate audio signals from coded sequences;

an extraction unit executable by the processor to extract, from a stream having multiple frames, each including a coded sequence
of an audio signal, long-term encoding scheme information for the multiple frames, the long-term encoding scheme information
indicating a same audio encoding scheme is to be used to generate coded sequences of the multiple frames, wherein in the stream,
each frame coming subsequent to a lead frame in the multiple frames does not include information identifying a specific audio
encoding scheme to be used to generate a coded sequence of said each frame; and

a selection unit executable by the processor in response to extraction of the long-term encoding scheme information, to select
from the plurality of decoding units, a same decoding unit to be used commonly to decode the coded sequences of the multiple
frames.

US Pat. No. 9,198,171

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
transmitting, with a first MOBILE STATION, a data signal to a RADIO BASE STATION through a RADIO BASE STATION interface set
between the first MOBILE STATION and the RADIO BASE STATION;

transmitting, with the first MOBILE STATION, a data signal to a second MOBILE STATION through an inter-MOBILE STATION interface
set between the first MOBILE STATION and the second MOBILE STATION;

transmitting, with the first MOBILE STATION, a first buffer status report indicating an amount of data retained in a first
transmission buffer, the first transmission buffer corresponding to a logical channel in the RADIO BASE STATION interface
to the RADIO BASE STATION;

transmitting, with the first MOBILE STATION, a second buffer status report indicating an amount of data retained in a second
transmission buffer, the second transmission buffer corresponding to a logical channel in the inter-MOBILE STATION interface
to the RADIO BASE STATION;

determining, with the RADIO BASE STATION, which the buffer status report is, the first buffer status report or the second
buffer status report, based on predetermined information included in the received buffer status report; and

allotting, with the RADIO BASE STATION, at least one of a Logical Channel Identity (LCID) and a Logical Group Priority (LGP)
as identification information of a logical channel in the RADIO BASE STATION interface and identification information of a
logical channel in the inter-MOBILE STATION interface.

US Pat. No. 9,112,994

MOBILE TERMINAL AND PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal being a first mobile terminal and comprising:
a display control unit that displays, on a display, a function selection screen on which a plurality of function names are
arranged in accordance with a given sequence;

a selection operation unit that accepts an operation for selecting any of the function names arranged on the function selection
screen;

an implementation unit that implements the function with the name selected through the operation accepted by the selection
operation unit;

a detection unit that detects another mobile terminal present within a given distance from a position of the first mobile
terminal; and

a determination unit that determines an environment class of the mobile terminal according to a detection result of the detection
unit, the determined environment class is selected from a plurality of environment classes defined in advance, the determination
unit further determines an arrangement of function names in a sequence for display, wherein a function name corresponding
to the determined environment class is arranged at a first position in the sequence and is selectable by fewer selection steps
than required for selection of function names not at the first position in the sequence,

wherein the plurality of environment classes are classes to which environments are assigned, an environment based on a number
of other mobile terminals present within the given distance from the position of the first mobile terminal.

US Pat. No. 9,629,162

RADIO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station that communicates with a user terminal by using a plurality of component carriers, comprising:
a configuration section that configures a subframe of a first carrier type, which a plurality of user terminals of varying
capabilities each can receive, and a subframe of a second carrier type, which part of the plurality of user terminals can
receive, in component carriers; and

a transmission section that:
transmits downlink signals to the user terminal by using the first carrier type and the second carrier type, and
reports information related to the carrier type of each subframe to the user terminal using one selected from a group consisting
of a broadcast signal, a RRC signaling, and a downlink control information,

wherein the RRC signaling is performed using information combining cell indices and carrier types,
wherein the configuration section configures the subframe of the first carrier type and the subframe of the second carrier
type, on a dynamically changing basis, in at least one of the plurality of component carriers.

US Pat. No. 9,554,364

COMMUNICATION SYSTEM, MOBILE STATION AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A communication system comprising:
a mobile station capable of connecting to an IP access network following Internet protocols via either a first radio access
network that supports services on an IP multimedia subsystem following Internet protocols or a second radio access network
that does not support the services on the IP multimedia subsystem; and

an exchange capable of communicating with the IP multimedia subsystem, wherein
the exchange includes an information notification unit configured to transmit service non-supporting information to the mobile
station, the service non-supporting information indicating that the second radio access network does not support the services,

the mobile station includes
a bearer establishment unit configured to transmit a bearer establishment request to the IP access network, the bearer establishment
request requesting establishment of a bearer that is a logical communication path between the mobile station and a gateway
device included in the IP access network, and

an information receiving unit configured to receive the service non-supporting information from the exchange via the second
radio access network, and

the bearer establishment unit stops the transmission of the bearer establishment request via the second radio access network
when the information receiving unit receives the service non-supporting information.

US Pat. No. 9,391,900

MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile station comprising a control unit that is configured not to transmit a connection request signal to a predetermined
network when recognizing that the predetermined network is incompatible with a predetermined function based on signaling from
the predetermined network,
wherein the control unit is configured to recognize that the predetermined network is incompatible with the predetermined
function based on an attach response signal that does not include instruction information indicating the predetermined function-compatible,

wherein the control unit is configured to determine whether or not the attach response signal includes the instruction information,
and perform standby in an acceptable cell after performing a detach process to the predetermined network and to make a transition
to a USIM invalid state until a power is turned on after the power is turned off, when the attach response signal does not
include the instruction information.

US Pat. No. 9,356,754

RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS, AND INTERFERENCE MEASUREMENT METHOD

NTT DOCOMO, INC., Tokyo ...

8. An interference method comprising the steps of:
allocating a first reference signal to a first resource element in a reference signal resource defined for transmission of
the first reference signal for channel state measurement and also allocating a second reference signal for interference measurement
to a second resource element in the reference signal resource;

implicitly reporting allocation patterns of the first reference signal and the second reference signal to a first mobile terminal
apparatus that supports both the first reference signal and the second reference signal; and

measuring interference using both the first reference signal and the second reference signal or using the second reference
signal alone, in the first mobile terminal apparatus, based on the implicitly reported allocation patterns,

wherein, as the second reference signal, a reference signal, for dedicated use in interference measurement is allocated to
the second resource element, based on the allocation pattern of the first reference signal which a second mobile terminal
apparatus supports, and the first mobile terminal apparatus measures interference using the first reference signal and the
reference signal for dedicated use in interference measurement.

US Pat. No. 9,325,462

USER EQUIPMENT, BASE STATION DEVICE, AND MOBILE COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A user equipment, which performs radio communication with a base station device using a Carrier Aggregation with a first
carrier and a second carrier in a mobile communication system,
wherein
a frequency band of the first carrier differs from a frequency band of the second carrier,
an uplink signal and a downlink signal are transmitted in the first carrier,
an uplink signal and a downlink signal are transmitted in the second carrier,
the user equipment communicates using the first carrier and the second carrier simultaneously,
the downlink signal in the first carrier and the uplink signal in the second carrier interfere with each other and the uplink
signal in the first carrier has no interference with the downlink signal in the second carrier and the downlink signal in
the first carrier,

the user equipment comprising:
a measurement unit configured to perform measurement processes in the downlink signal of the second carrier, not to perform
measurement process in the downlink signal of the first carrier while the uplink signal in the second carrier is transmitted
and to perform measurement process in the downlink signal of the first carrier only while no interference in the downlink
signal of the first carrier is detected because of no transmission in the uplink signal in the second carrier to avoid a degradation
of reception characteristics of the downlink signal of the first carrier due to transmission power in the uplink signal in
the second carrier,

wherein the user equipment determines the time when the uplink signal of the second carrier is not transmitted.

US Pat. No. 9,265,062

MOBILE STATION, WIRELESS ACCESS NETWORK DEVICE, MOBILE COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile station configured to transmit a connection request signal to a wireless access network device for bi-directional
communications with the wireless access network device, comprising:
a processor configured to:
calculate a reception timing of a connection set-up signal based on a transmission timing of the connection request signal,
when the connection request signal is transmitted; and

perform a signal reception of the connection set-up signal only at the calculated reception timing of the connection set-up
signal and to determine whether the connection set-up signal is received,

wherein the processor is configured to calculate the reception timing by adding a predetermined time value to the transmission
timing of the connection request signal, and

wherein the processor is configured to perform the signal reception of the connection set-up signal, being used for setting
up a connection between the mobile station and the wireless access network device, after a fixed time period has elapsed from
the transmission timing of the connection request signal, the fixed time period being determined based on the predetermined
time value.

US Pat. No. 9,596,627

MOBILE COMMUNICATION METHOD AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
a step A of, when communication of a mobile station in a connected state in a first cell under control of a first radio base
station is performed through an evolved packet system (EPS) bearer,

wherein the EPS bearer is formed of a Data radio bearer between the mobile station and the first radio base station and an
S1-U bearer between the first radio base station and a gateway device, and

when a second cell under control of a second radio base station is located in a coverage of the first cell and the first radio
base station detects that the second cell is located around the mobile station from a result of a radio measurement on the
mobile station, causing the first radio base station to send the mobile station a setting change signal containing information
correlating identification information on the EPS bearer with identification information on the second cell;

a step B of causing the mobile station to set a Data radio bearer between the mobile station and the second radio base station
in response to the setting change signal; and

a step C of changing the EPS bearer,
wherein the EPS bearer is formed of the Data radio bearer between the mobile station and the second radio base station, an
S1-U bearer between the second radio base station and the first radio base station, and the S1-U bearer between the first
radio base station and the gateway device.

US Pat. No. 9,337,942

PROPAGATION PATH ESTIMATION METHOD AND PROGRAM AND APPARATUS USING THE SAME

NTT DOCOMO, INC., Tokyo ...

1. A propagation path estimation method carried out by an apparatus, the propagation method using an imaging method, the propagation
path estimation method comprising:
transmitting a radio wave by a transmitter;
reflecting and scattering the radio wave in a different direction (???)° from a specular reflection direction ?° on a propagation
path by a reflect array structure on the propagation path;

receiving, at a reception point RX, the radio wave reflected and scattered in the different direction by a receiver;
rotating virtually the reception point RX by ?° about a rotation center point O by a processor of the apparatus, the processor
coupled to a storage medium that is provided inside application specific integrated circuit (ASIC) and the processor reading
and writing information from and into the storage medium for the rotating;

determining, by the processor, a reflection point RP of the radio wave on the reflect array structure based on the rotating;
updating, by the processor, the rotation center point O when a distance between the reflection point RP and the rotation center
point O does not satisfy a convergence condition;

repeating, by the processor, the rotating and determining until the convergence condition is satisfied;
estimating, by the processor, the propagation path of the radio wave when the convergence condition is satisfied; and
applying, by the processor, the estimated propagation path to provide a required communication link quality in a wireless
communication system.

US Pat. No. 9,307,486

USER EQUIPMENT AND RECONNECTION METHOD FOR MOBILE COMMUNICATIONS SYSTEM

NTT DOCOMO, INC., Chiyod...

1. A user equipment comprising:
a cell search unit configured to execute a cell search;
a detector configured to detect that reconnection is required;
a storage unit configured to store voice over IP (VoIP) support information that indicates, for each of a plurality of operators,
whether voice packet communication is allowed for each of a first mobile communication system, as a first radio access technology
(RAT), in which communication is executed in accordance with a first radio access scheme and a second mobile communication
system, as a second RAT, in which communication is executed in accordance with a second radio access scheme;

a cell search target determination unit configured to report, to the cell search unit, only one or more RATs that allow the
voice packet communication of the first RATs and the second RATs that are operated by the operators as a target of the cell
search by referring to the VoIP support information, in response to determining, by the detector, that the reconnection is
required for the voice packet communication; and

a communication unit configured to communicate in a cell that is detected by the cell search,
wherein the VoIP support information is reported from a switching center of a network during location registration or an attach
procedure, and the VoIP support information is stored in the storage unit.

US Pat. No. 9,191,951

RADIO COMMUNICATION SYSTEM FOR OPTIMAL CFI CONTROL IN A CROSS-CARRIER SCHEDULING ENVIRONMENT

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
a first base station that forms a first cell; and
a second base station that forms a second cell overlapping with at least a part of the first cell,
wherein,
in a case where communication between subordinate terminals is performed using a plurality of fundamental frequency blocks,
the first base station transmits first resource information indicating a data channel initiation position in one of the fundamental
frequency blocks, and second resource information indicating a data channel initiation position in the other fundamental frequency
block through a control channel of the one of the fundamental frequency block, the first resource information is dynamically
controlled, and the second resource information is quasi-statically controlled,

in a case where communication between subordinate terminals existing in positions where there is interference from the first
cell within the second cell is performed using the one and the other fundamental frequency blocks, the second base station
transmits third resource information indicating a data channel initiation position in the other fundamental frequency block
and fourth resource information indicating a data channel initiation position in the one of the fundamental frequency block
through a control channel of the other fundamental frequency block, and the third resource information and the fourth resource
information are dynamically controlled,

the first base station controls the second resource information such that the data channel initiation position in the other
fundamental frequency block occurs before the data channel initiation position in the one fundamental frequency block while
the number of control channel symbols allocated by the second base station to the subordinate terminal in the other fundamental
frequency block is smaller than a maximum number of symbols, and

the number of control channel symbols are estimated from the number of subordinate terminals existing in the second cell.

US Pat. No. 9,185,693

MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in which a mobile station receives downlink data transmitted from a radio base station by
using a downlink radio resource assigned to the mobile station by predetermined scheduling information instructing semi-persistent
assignment of the downlink radio resource, in a predetermined cycle, the method comprising the steps:
(A) receiving the predetermined cycle from the radio base station;
(B) receiving the predetermined scheduling information from the radio base station;
(C) receiving downlink data in the predetermined cycle by using the downlink radio resource assigned by the predetermined
scheduling information without receiving any downlink scheduling information dynamically assigning the downlink radio resource,
the reception starting at a certain point determined on the basis of the received predetermined scheduling information, wherein

the predetermined scheduling information is discarded and the reception is not started so as to reduce a probability of an
occurrence of a false alarm in downlink scheduling information for semi-persistent scheduling, when the information included
in the predetermined scheduling information does not match at least one of previously defined “MCS information,” “TPC,” and
“HARQ process information.”

US Pat. No. 9,172,767

MOBILE TERMINAL, DATA DISTRIBUTION SERVER, DATA DISTRIBUTION SYSTEM, AND DATA DISTRIBUTION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal comprising:
storage module that stores data distributed from a server;
circuitry configured to carry out an arithmetic operation to calculate an amount of space currently available in the storage
module and a possible amount of space that is a volume of deletable data in the storage module;

a transmitter configured to notify the server of a data acquisition request indicating the amount of space and the possible
amount of space for which the arithmetic operation has been carried out by the circuitry; and

a receiver configured to receive data and a distribution list that is a list of data other than the data in response to the
notification, wherein

the circuitry is configured to
perform deletion of data in order to secure the possible amount of space in the storage module when the distribution list
is received by the receiver; and

request data from the server satisfying a predetermined condition out of the data described in the distribution list to acquire
the data, when the deletion of data is performed and a predetermined storage capacity is secured.

US Pat. No. 9,144,030

MOBILE COMMUNICATION TERMINAL

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication terminal that simultaneously transmits data through a plurality of channels, comprising:
circuitry configured to
perform transmission power control such that a sum of transmission powers is a target value;
calculate a sum of average transmission powers of the respective channels in a monitoring period; and
perform reduction control of the transmission powers, wherein
a control period is set so as to include the monitoring period and a transmission power suppression period following the monitoring
period, and

the circuitry reduces, when the sum of the average transmission powers of the respective channels in the monitoring period
is equal to or more than a threshold value of the sum of the average transmission powers of the respective channels, the transmission
powers of the respective channels in the transmission power suppression period such that the average value of the sum of the
transmission powers of the respective channels in the control period is equal to or less than the threshold value.

US Pat. No. 9,060,176

MOTION VECTOR PREDICTION IN VIDEO CODING

NTT DOCOMO, INC., Tokyo ...

1. A method comprising:
deriving N motion vector predictors for a first block that has N motion vectors corresponding to N lists of reference frames
and a current frame, including constructing one of the N motion vector predictors when a second block that neighbors the first
block and is used for prediction has at least one invalid motion vector, where N is an integer greater than 1, wherein constructing
one of the N motion vector predictors in a first list of the N lists is performed by applying a function to another of the
other N motion vector predictors in a second list of the N lists different than the first list and signed temporal distances
from the current frame to the reference frames associated with each motion vector in the N motion vectors of the first block;

generating N differential motion vectors based on the N motion vectors and N motion vector predictors; and
encoding the N differential motion vectors.

US Pat. No. 9,391,682

USER EQUIPMENT AND BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A user equipment comprising:
a transmission and reception unit configured to communicate a radio signal with a base station in accordance with MIMO (Multiple
Input Multiple Output) transmission;

a codebook storage unit configured to store predefined codebooks to specify precoding matrices for use in the MIMO transmission,
wherein the codebooks are arranged to represent phase information and gain information;

a channel measurement unit configured to measure channel conditions based on reference signals transmitted from multiple antennas
in the base station; and

a codebook selection unit configured to select a codebook to be indicated to the base station from the stored codebooks based
on the measured channel conditions and instruct the transmission and reception unit to indicate feedback information to the
base station, wherein the feedback information includes a codebook index for identifying the selected codebook,

wherein the feedback information identifies a first matrix W1 representing the phase information and the gain information and a second matrix W2 representing the phase information, and the precoding matrix is derived from W1W2.

US Pat. No. 9,357,512

MOBILE COMMUNICATION METHOD FOR ADJUSTING TRANSMISSION TIMING IN DEVICE TO DEVICE COMMUNICATION LINK

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method used in a case where a first radio link has been set in a radio base station interface between
a first mobile station and a radio base station, a second radio link has been set in a radio base station interface between
a second mobile station and the radio base station, a third radio link has been set in an inter-mobile station interface between
the first mobile station and the second mobile station, and the first mobile station includes a timer for the first radio
link and a timer for the third radio link, comprising:
a step of transmitting, by the first mobile station, a data signal to the second mobile station via the third radio link;
a step of transmitting, by the second mobile station, timing information indicating a time, for which the reception timing
of the data signal has been deviated from a desired timing, to the radio base station via the second radio link when it is
detected that the reception timing of the data signal has been deviated from the desired timing by a predetermined time or
more;

a step of transmitting, by the radio base station, adjustment information for adjusting a transmission timing of a data signal
in the third radio link to the first mobile station via the first radio link on the basis of the received timing information;
and

a step of resetting the timer for the third radio link by reception of the adjustment information,
wherein the timer for the first radio link and the timer for the third radio link are the same timer.

US Pat. No. 9,232,477

TERMINAL APPARATUS, BASE STATION APPARATUS, MOBILE COMMUNICATION SYSTEM, AND TRANSMISSION MODE SETTING METHOD

NTT DOCOMO, INC., Tokyo ...

1. A terminal apparatus that performs radio communication with a base station apparatus in a mobile communication system,
comprising:
a transmission mode information receiving unit configured to receive transmission mode information, from the base station
apparatus, corresponding to a transmission mode, on a radio transmission requirement of a maximum transmission power and out-of-band
radiation, that should be set in the terminal apparatus;

a transmission mode setting unit configured to set the terminal apparatus to the transmission mode if the terminal apparatus
can perform radio transmission in the transmission mode corresponding to the transmission mode information received by the
transmission mode receiving unit; and

a radio transmission unit configured to perform radio transmission in the transmission mode.

US Pat. No. 9,220,020

USER APPARATUS, BASE STATION APPARATUS, AND METHOD IN MOBILE COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A user apparatus for transmitting an uplink control signal to a base station apparatus using a single carrier scheme, comprising
an ACK/NACK determination unit configured to prepare acknowledgement information indicating positive acknowledgement or negative
acknowledgement for a downlink data signal based on a result of demodulation of the downlink data signal;

a CQI estimation unit configured to prepare channel state information indicating reception quality of a downlink reference
signal;

a multiplexing unit configured to multiplex the acknowledgment information and the channel state information, wherein the
number of bits of the channel state information is greater than the number of bits of the acknowledgement information;

a coding unit configured to collectively channel-code multiplexed control information in which the acknowledgement information
and the channel state information are multiplexed;

a modulation unit configured to generate an uplink control signal based on the multiplexed control information that is channel-coded
by the coding unit; and

a transmission unit configured to transmit the uplink control signal using dedicated resources different from resources for
an uplink data signal,

wherein the multiplexing unit performs multiplexing of the channel state information and the acknowledgement information so
as to generate the multiplexed control information having a length that is equal to the sum of the number of bits of the acknowledgement
information and the channel state information in which plural bits for representing the channel state information remain continuous.

US Pat. No. 9,220,113

MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in which a mobile station transmits an uplink signal to a radio base station, the method
comprising the steps:
receiving an uplink scheduling grant for semi-persistent scheduling as predetermined scheduling information from the radio
base station; and

transmitting an uplink signal on the basis of the received uplink scheduling grant without receiving any uplink scheduling
grant dynamically assigning an uplink radio resource, wherein the mobile station discards the uplink scheduling grant and
does not start transmitting the uplink signal so as to reduce a probability of an occurrence of a false alarm in uplink scheduling
grant for semi-persistent scheduling when a value of an information element “Cyclic Shift for DMRS” in the uplink scheduling
grant does not match a predefined fixed value.

US Pat. No. 9,184,811

BASE STATION APPARATUS, MOBILE STATION APPARATUS AND CONTROL INFORMATION TRANSMISSION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus comprising:
an identification information selection section configured to select identification information which identifies between a
DCI format for SU-MIMO and a DCI format for MU-MIMO;

a control signal generation section configured to generate a control signal including the DCI format for SU-MIMO or MU-MIMO,
including the identification information and having a same number of bits when the amount of information to be defined in
the DCI format varies between SU-MIMO and MU-MIMO; and

a transmission section configured to transmit the control signal to a mobile station apparatus,
wherein the control signal generation section makes the number of bits the same between the DCI formats for SU-MIMO and MU-MIMO
by adding MU-MIMO-specific information to a DCI field in the DCI format for MU-MIMO.

US Pat. No. 9,184,831

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND RELAY NODE

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method, comprising:
a step A in which, when a predetermined trigger indicating conditions for modifying a connection that is set between a radio
base station and a relay node is detected, the radio base station notifies the relay node of a transmission timing of a MBSFN
(Multicast Broadcast Single Frequency Network) subframe by a signal for changing a configuration of the connection that is
set between the radio base station and the relay node;

a step B in which the radio base station performs scheduling such that a downlink signal is transmitted by using a time division
multiplexing scheme to the relay node at the transmission timing of the MBSFN subframe; and

a step C in which the relay node performs scheduling such that a downlink signal is transmitted by using a time division multiplexing
scheme at a timing other than the transmission timing of the MBSFN subframe;

wherein the connection is an RRC (Radio Resource Control) connection, and the signal is an “RN (Relay Node) Reconfiguration”.

US Pat. No. 9,131,503

MOBILE STATION, BASE STATION, TRANSMISSION METHOD AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile station comprising: where the mobile station supports a first frequency band and a second frequency band, an information
element generating unit configured to generate an information element indicating whether a receiver sensitivity is degraded
in the second frequency band when the second frequency band is narrower than the first frequency band while the separation
between a transmission frequency and a reception frequency is the same between the first and second frequency bands, and whether
transmission and reception bands of the mobile station correspond to a portion of a bandwidth of the second frequency band,
when the mobile station roams from the first frequency band to the second frequency band; and a transmitting unit configured
to transmit the generated information element to a base station; wherein the information element further indicates whether
a certificate has been obtained for communications in the second frequency bands, and a base station control unit allows or
prohibits communications with the mobile station, when the received information element indicates that the certificate has
not been obtained for communications in the second frequency band.

US Pat. No. 9,113,171

MOVING IMAGE PREDICTION ENCODING/DECODING SYSTEM

NTT DOCOMO INC., Tokyo (...

1. A video predictive encoding device comprising:
a processor;
an input module executed by the processor to accept input of a plurality of pictures constituting a video sequence;
an encoding module executed by the processor to encode each of the input pictures by either intra-frame prediction or inter-frame
prediction and to generate compressed picture data including a random access picture serving as a picture of random access,
the encoding module further executed to encode data providing display order information of each of the pictures;

a restoration module executed by the processor to decode the generated compressed picture data to restore a reproduced picture;
a picture storage module executed by the processor to store the restored reproduced picture as a reference picture for use
in encoding a subsequent picture; and

a memory management module executed by the processor to control the picture storage means,
wherein after execution of an encoding process by the encoding module to generate the random access picture, the memory management
module is further executed by the processor to refresh the picture storage module by setting every reference picture stored
in the picture storage module except for the random access picture as unnecessary, the picture storage module refreshed immediately
before or immediately after execution by the encoding module to encode a picture having display order information larger than
display order information of the random access picture.

US Pat. No. 9,491,749

RADIO COMMUNICATION METHOD, RADIO COMMUNICATION SYSTEM AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A radio base station comprising:
a transmitter that transmits downlink control information in an enhanced downlink control channel that is frequency-division-multiplexed
with a downlink shared channel; and

a processor that maps the downlink control information to a plurality of resource elements (REs) that constitute physical
resource block (PRB) pairs configured for the enhanced downlink control channel,

wherein the downlink control information is generated in units of enhanced control channel elements (eCCEs), each eCCE consisting
of multiple enhanced resource element groups (eREGs), and

the processor numbers the REs that constitute the PRB pairs, except REs carrying demodulation reference signals (DM-RSs),
with numbers corresponding to index numbers of eREGs in frequency and time directions, and maps each eREG to REs corresponding
to an index number of the eREG.

US Pat. No. 9,467,331

MOBILE COMMUNICATION METHOD, MOBILE STATION, AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
a step A in which when detecting a radio link failure in a first cell under a first radio base station, a mobile station starts
a reconnection procedure for a second radio base station managing a second cell selected in a cell selection processing;

a step B in which the mobile station transmits Cell Global Identity (CGI) of the first cell to the second radio base station
in the reconnection procedure; and

a step C in which in the reconnection procedure, when not managing context information of the mobile station, the second radio
base station acquires context information of the mobile station from the first radio base station managing the first cell
designated based on the CGI,

wherein the step B includes:
a step B1 in which the mobile station transmits transmission enable/disable information indicating whether the CGI of the
first cell can be transmitted to the second radio base station via a reconnection request signal;

a step B2 in which when the received transmission enable/disable information indicates that the CGI of the first cell can
be transmitted, the second radio base station transmits request information for requesting to transmit the CGI of the first
cell to the mobile station via a reconnection signal; and

a step B3 in which the mobile station transmits the CGI of the first cell to the second radio base station via a reconnection
complete signal in response to the request information.

US Pat. No. 9,438,391

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
a step of notifying, by a radio base station, configuration information of a reference signal for a mobile station in a transmission
point to the mobile station connected to a cell managed by the radio base station, when instructing an addition or change
of the transmission point performing a coordinated multi-point transmission/reception process by an RRCConnectionReconfiguration
including radioResourceConfigDedicated therein,

wherein an information element that notifies the configuration information of the reference signal for the mobile station
in the transmission point, is set in the radioResourceConfigDedicated;

a step of measuring, by the mobile station, a channel quality of the transmission point by using the reference signal for
the mobile station in the transmission point, while performing the coordinated multi-point transmission/reception process;
and

a step of notifying, by the mobile station, the channel quality of the transmission point to the radio base station.

US Pat. No. 9,326,154

MICRO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication control method in a radio base station, the radio communication control method comprising the steps
of:
allocating, in a specific subframe, a physical downlink data channel (PDSCH) and a physical downlink control channel (X-PDCCH)
by frequency-division-multiplexing to a first radio resource, from a first symbol in the first radio resource, the first radio
resource being a data region corresponding to symbols following a first predetermined number of symbols in the specific subframe,
and allocating, in an other specific subframe, a physical downlink data channel (PDSCH) and a physical downlink control channel
(X-PDCCH) by frequency-division-multiplexing to a second radio resource, the second radio resource being an enhanced data
region corresponding to first to last symbols in the other specific subframe, in which allocation of the physical downlink
data channel (PDSCH) starts with any symbol among a first predetermined number of symbols in the second radio resource and
allocation of the physical downlink control channel (X-PDCCH) starts with a symbol following the first predetermined number
of symbols in the second radio resource; and

notifying a user terminal of information about physical downlink control channel (X-PDCCH) configuration by higher layer signaling,
and

wherein it is switchable between a configuration where allocation of the PDSCH starts with a same symbol as allocation of
the X-PDCCH in the specific subframe and a configuration where allocation of the PDSCH starts with an earlier symbol than
allocation of the X-PDCCH in the other specific subframe.

US Pat. No. 9,320,071

COMMUNICATION SYSTEM, MOBILE STATION, AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A communication system comprising:
a mobile station connectable to an IP access network conforming to Internet protocol via any one of a first radio access network
supporting a particular service conforming to the Internet protocol and a second radio access network not supporting the particular
service conforming to the Internet protocol; and

a switch capable of communicating with the particular service conforming to the Internet protocol, wherein
the switch includes a connection rejection notification unit configured to transmit a connection rejection notification to
the mobile station if the switch receives a request for reconnection to the IP access network from the mobile station via
the second radio access network, the connection rejection notification indicating that the mobile station is not connectable
to an APN used in the particular service conforming to the Internet protocol, and

the mobile station includes a reconnection suspension unit configured to, in a case where the mobile station receives the
connection rejection notification from the switch after transitioning from the first radio access network to the second radio
access network, suspend transmission of the request for reconnection to the IP access network only if the mobile station is
camping in the second radio access network through which the connection rejection notification has been received.

US Pat. No. 9,255,942

MOBILE TERMINAL AND CONTINUOUS MOVEMENT DETECTION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal, comprising:
a first fixed-interval timer configured to count a first interval;
a second fixed-interval timer configured to count a second interval that is longer than the first interval;
a motion acceleration detection unit configured to obtain a first period of acceleration data from an acceleration sensor
at the first interval and detect motion acceleration based on the first period of acceleration data;

a walking state detection unit configured to, when the motion acceleration is detected based on the first period of acceleration
data, obtain a second period of acceleration data from the acceleration sensor and detect a walking state or a non-walking
state based on the second period of acceleration data, the second period being longer than the first period; and

a continuous walking determining unit configured to determine that continuous walking is detected when the walking state is
detected a predetermined number of times or more within the second interval.

US Pat. No. 9,198,102

MOBILE COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method, comprising the steps of:
in a state where a first radio base station forwards downlink user data addressed to a mobile station, which is received from
a gateway apparatus, to a second radio base station and the second radio base station transmits the downlink user data addressed
to the mobile station to the mobile station,

determining, by the second radio base station, to perform handover processing for the mobile station from a cell under the
second radio base station to a cell under a third radio base station;

transmitting, by the second radio base station, a handover request signal to the third radio base station, the handover request
signal notifying that forwarding of the downlink user data addressed to the mobile station from the first radio base station
to the second radio base station is ongoing;

transmitting, by the third radio base station, a forwarding request signal for the downlink user data addressed to the mobile
station, to the first radio base station;

in response to the forwarding request signal, switching, by the first radio base station, a forwarding destination of the
downlink user data addressed to the mobile station, which is received from the gateway apparatus, from the second radio base
station to the third radio base station; and

transmitting, by the third radio base station, the downlink user data addressed to the mobile station, which is received from
the first radio base station, to the mobile station.

US Pat. No. 9,185,724

APERIODIC CHANNEL STATE INFORMATION REPORTING METHOD, RADIO BASE STATION APPARATUS AND USER TERMINAL

NTT DOCOMO, INC., Tokyo ...

1. An aperiodic channel state information reporting method comprising the steps of:
transmitting, from a radio base station apparatus to a user terminal, via a downlink control channel, an uplink scheduling
grant, which includes an identification field that identifies an uplink serving cell where an uplink shared channel is allocated
among a plurality of uplink serving cells and a request field that requests reporting of aperiodic channel state information
from the user terminal; and

when both the identification field and the request field correspond to at least one downlink serving cell to be a target for
aperiodic channel state information reporting and the uplink serving cell to be used for the aperiodic channel state information
reporting, reporting aperiodic channel state information of at least one downlink serving cell designated by a combination
of both the identification field and the request field included in the uplink scheduling grant, from the user terminal to
the radio base station apparatus, via an uplink shared channel, wherein,

when the uplink shared channel is allocated to the uplink serving cell identified by the identification field, the radio base
station apparatus designates at least one downlink serving cell, aperiodic channel state information of which needs to be
reported from the user terminal, using the request field;

wherein the request field comprises at least two bits and different downlink serving cells are designated by the same request
field.

US Pat. No. 9,146,637

MOBILE INFORMATION TERMINAL AND OPERATION STATE DETERMINATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile information terminal provided with a pressure sensor array that acquires a gripping pressure distribution, the
mobile information terminal comprising:
circuitry configured to function as
a gripping pressure logger adapted to record time-series changes in gripping pressure at each pressure sensor forming the
pressure sensor array;

a gripping pressure change point detection unit comprising a gripping pressure change amount calculation section adapted to
acquire time-series changes in gripping pressure at each pressure sensor and to determine whether the amount of change in
gripping pressure per unit time exceeds a predetermined value at any pressure sensor; and

an operation state determination section adapted to determine that the operation state of the mobile information terminal
of the user of the mobile information terminal is one-handed operation when the amount of change in gripping pressure per
unit time exceeds the predetermined value at any pressure sensor, wherein

the gripping pressure change point detection unit further comprises a change frequency counting section adapted to count the
number of times the amount of change in gripping pressure per unit time exceeds a predetermined value in each predetermined
period of time, the number being referred to as a change frequency; and

the operation state determination section determines that the operation state of the mobile information terminal of the user
of the mobile information terminal is one-handed operation in a period of time in which the change frequency exceeds a predetermined
value.

US Pat. No. 9,130,623

USER EQUIPMENT AND METHOD FOR RADIO COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. User equipment for a radio communication system comprising:
a converter configured to convert a transmission target signal in a frequency domain that is to be transmitted into a first
signal in a time domain;

a quadrature modulator configured to apply quadrature modulation to the first signal;
a cancellation signal generator configured to generate an image leakage cancellation signal by deriving an image signal in
the frequency domain, converting the image signal into a second signal in the time domain, and applying the quadrature modulation
to the second signal, wherein the image signal has a first frequency component that is symmetrical to the transmission target
signal with respect to a center of a transmission frequency range in the frequency domain;

an adjuster configured to monitor the first frequency component of the image signal in an output signal from the quadrature
modulator, and configured to adjust amplitude and a phase of the image leakage cancellation signal so as to be equal amplitude
and opposite phase to the first frequency component; and

a combiner configured to combine the output signal from the quadrature modulator with the image leakage cancellation signal,
and configured to provide a power amplifier with the combined signal,

wherein the adjuster is configured to monitor a third frequency component of a carrier signal that leaks in the output signal
from the quadrature modulator, and is configured to generate a carrier leakage cancellation signal, wherein amplitude and
a phase of the carrier leakage cancellation signal have been adjusted to cancel the leaked carrier signal, and

wherein the combiner is configured to combine the output signal from the quadrature modulator, the image leakage cancellation
signal, and the carrier leakage cancellation signal, and the combiner is configured to provide the power amplifier with the
combined signal.

US Pat. No. 9,107,111

NOTIFICATION METHOD, USER TERMINAL AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A notification method by which a user terminal receives modification notification information for notifying modification
in system information from a micro base station that is arranged in a macro cell formed by a macro base station and forms
a smaller micro cell than the macro cell, the notification method comprising the steps of:
at the macro base station, notifying the micro base station of a subframe pattern including a protection subframe to protect
the modification notification information for a plurality of radio frames; and

at the micro base station, notifying the user terminal of identification information of the protection subframe in the subframe
pattern,

wherein the subframe pattern includes the protection subframe of 1 to 40 subframes,
wherein the identification information of the protection subframe is associated with a position of a measurement subframe
in a measurement pattern set as a subset of the subframe pattern, and

wherein the modification notification information is included in one of SIB1 or a paging broadcasted from the micro base station.

US Pat. No. 9,100,905

MOBILE COMMUNICATION METHOD, CONTROL DEVICE, AND EXCHANGE

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
acquiring, by an exchange, in a communication start procedure of mobile station camps on a femtocell, a frequency of the femtocell
and a femtocell ID for uniquely identifying the femtocell which are held in a controller;

storing, by the exchange and a home location register, the acquired frequency of the femtocell and the acquired femtocell
ID in association with subscriber information of a mobile station;

judging, by the controller, whether the communication start procedure by the mobile station is performed through the femtocell
or through a macrocell;

transmitting a location registration request signal to the exchange by the controller when the communication start procedure
is performed through the femtocell, the location registration request signal having been transmitted from the mobile station
visiting the macrocell through a radio connection established with the mobile station;

performing, by the exchange and the home location register, location registration to register the mobile station for a location
registration area to which the femtocell geographically overlaid with the macrocell belongs, in response to the received location
registration request signal;

notifying, by the exchange, in a release procedure of the radio connection after completion of the location registration,
the controller of the frequency of the femtocell, and notifying, by the controller, in the release procedure, the mobile station
of the notified frequency of the femtocell; and

starting, by the mobile station, camps on the notified frequency of the femtocell,
wherein, in the communication start procedure of the mobile station camps, the controller transmits an “INITIAL UE MESSAGE”
including the frequency of the femtocell and the femtocell ID to the exchange, and the exchange acquires the frequency of
the femtocell and the femtocell ID included in the “INITIAL UE MESSAGE.”

US Pat. No. 9,053,656

APPARATUS FOR EVALUATING OPTICAL PROPERTIES OF THREE-DIMENSIONAL DISPLAY, AND METHOD FOR EVALUATING OPTICAL PROPERTIES OF THREE-DIMENSIONAL DISPLAY

NTT DOCOMO, INC., Tokyo ...

1. An apparatus for evaluating optical properties of a three-dimensional display, the apparatus comprising:
a luminance measuring unit configured to measure luminance in a radiation angle direction of a light ray radiated from a predetermined
measurement point on the three-dimensional display;

a luminance distribution analyzing unit configured to analyze a luminance distribution state in the radiation angle direction
of the light ray based on luminance data measured by the luminance measuring unit, and to generate a luminance distribution
image of the light ray, the luminance distribution image being an image that shows luminance distribution of the light ray
in a region between the three-dimensional display and an observer;

an interocular luminance analyzing unit configured to analyze luminance perceived between eyes of the observer based on the
luminance distribution image, and to generate a stereoscopy determination image; and

a stereoscopy determining unit configured to determine a certain region in the radiation angle direction in front of the three-dimensional
display, as a stereoscopy possible region, based on the stereoscopy determination image.

US Pat. No. 9,609,657

MOBILE COMMUNICATION METHOD, RADIO BASE STATION AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising the steps of;
notifying a mobile station of an initial value of a first offset value by a radio base station;
notifying the mobile station of an initial value of a second offset value by the radio base station; and
performing a demodulation process on a downlink data signal in an Almost Blank Subframe (ABS) by the mobile station based
on the initial value of the first offset value and the initial value of the second offset value, wherein

the first offset value is a value representing a ratio between transmission power on a physical downlink shared channel in
a first period in which a cell-specific reference signal is transmitted in ABS, and transmission power on the physical downlink
shared channel in a second period in which no cell-specific reference signal is transmitted in ABS, and

the second offset value is a value representing a ratio between the transmission power on the physical downlink shared channel
in the second period in which no cell-specific reference signal is transmitted in the ABS and transmission power of the cell-specific
reference signal.

US Pat. No. 9,591,628

BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus comprising:
a downlink control information generation section configured to generate downlink control information to demodulate data channels
that are sent independently in respective fundamental frequency blocks allocated to a user terminal; and

a transmitting section configured to transmit a downlink control channel containing the downlink control information,
wherein the downlink control information generated by the downlink control information generation section is used to demodulate
the data channels assigned to the fundamental frequency blocks and is added with identification information that is capable
of identifying each frequency of the fundamental frequency blocks,

wherein each of the fundamental frequency blocks is a component carrier (CC) having a predetermined frequency band, and
wherein the downlink control information generation section makes all information pieces in the downlink control information
in common irrespective of a number of the data channels assigned to the fundamental frequency blocks.

US Pat. No. 9,504,024

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in a mobile communication system in which a mobile station is configured to be capable of
performing carrier aggregation via a first cell under a first radio base station and a second cell under a second radio base
station, the mobile communication method including the steps of:
when a first logical channel is established between the mobile station and the first radio base station, a second logical
channel is established between the mobile station and the second radio base station, a scheduling request transmission resource
is assigned to the mobile station by each of the first radio base station and the second radio base station, and uplink data
to be transmitted in the second logical channel is generated in the mobile station,

causing the mobile station to transmit a scheduling request to the second radio base station by using the scheduling request
transmission resource assigned by the second radio base station, without transmitting the scheduling request to the first
radio base station by using the scheduling request transmission resource assigned by the first radio base station;

causing the second radio base station to notify, the mobile station of a buffered-data-amount transmission resource;
causing the mobile station to transmit an amount of buffered data in the second logical channel to the second radio base station
by using the buffered-data-amount transmission resource; and

causing the second radio base station to assign the mobile station a resource for transmission of the uplink data, upon receipt
of the amount of buffered data,

wherein the amount of buffered data is a total amount of buffered data for the second logical channel, associated with the
second radio base station, among a plurality of logical channels which belong to a plurality of logical channel groups.

US Pat. No. 9,497,650

RADIO COMMUNICATION METHOD, RADIO BASE STATION, USER TERMINAL, AND RADIO COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A radio communication method for a plurality of radio base stations and a user terminal having ability to receive a reference
signal for channel state measurement from the plurality of radio base stations, the radio communication method comprising:
gathering, in a predetermined radio base station, system information of each radio base station to generate report information
and reporting the generated report information to the user terminal as a predetermined information element, by using higher
layer signaling; and

measuring, in the user terminal, channel quality based on the received report information, wherein
the predetermined radio base station selects system information to be used in the user terminal from the gathered system information
and incorporates the selected system information into the report information,

the system information includes at least one of a system bandwidth, information of a subframe where a broadcast signal is
multiplexed, information of a subframe where paging information is multiplexed, and information of a number of antenna ports
of the reference signal, and

the predetermined radio base station selects and reports a minimum system bandwidth among system bands of the radio base stations
as the system bandwidth.

US Pat. No. 9,491,643

USER APPARATUS AND METHOD IN MOBILE COMMUNICATION SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A user apparatus including at least operation modes of a connection mode and an idle mode, comprising:
a measurement unit configured to measure radio quality in the idle mode according to configuration information indicating
that the user apparatus is set beforehand to report a measurement value of radio quality to a management node;

a storage unit configured to store the configuration information and the measurement value of radio quality measured by the
measurement unit; and

a transmission unit configured to transmit, when a mode of the user apparatus is changed from the idle mode to the connection
mode, an indicator indicating that there is the measurement value of radio quality to a base station, and to transmit a report
signal including the measurement value of radio quality according to a request from the base station,

wherein, when the user apparatus obtains new configuration information, the storage unit stores the new configuration information
according to a predetermined updating rule,

wherein, when a predetermined period expires, the storage unit deletes the configuration information, and
wherein, when the user apparatus receives the new configuration information after the user apparatus enters a new area, the
user apparatus replaces the configuration information stored in the storage unit with the new configuration information.

US Pat. No. 9,467,946

PORTABLE TERMINAL, TRANSITION METHOD, AND PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. A portable terminal comprising:
a first detection unit that detects a change in a position of the portable terminal;
a second detection unit that detects a change in a physical quantity representing a surrounding condition of the portable
terminal; and

a transition unit that causes the portable terminal to transition from a first state to a second state in which electricity
consumption is smaller than that of the first state, upon a relation between a direction of the change detected by the first
detection unit and a trend in the change in the physical quantity detected by the second detection unit satisfying a predetermined
condition,

wherein:
the second detection unit detects a change in a relative position of an object with respect to an operation surface, the object
being located in a direction in which the operation surface faces; and

the transition unit performs a transition upon an opposite relation being satisfied between a component of the direction of
the change detected by the first detection unit, the component being parallel to the operation surface of the portable terminal,
and the trend in the change detected by the second detection unit.

US Pat. No. 9,467,989

BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS, COMMUNICATION SYSTEM AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus comprising:
a baseband signal processor that generates downlink control signals for a mobile terminal apparatus that receives downlink
signals using a resource region for downlink control signals and a resource region for downlink data signals;

wherein the baseband signal processor maps a plurality of virtual resources for downlink control signals to a plurality of
physical resources that are arranged in a frequency direction in the resource region for downlink data signals, and allocates
the downlink control signals to the virtual resources; and

a transmitter that transmits the downlink control signals allocated by the baseband signal processor,
wherein, when a multiplexing method of the virtual resources is CDM or interleaved FDM/TDM, antenna port numbers for demodulation
reference signals used in demodulation of the downlink control signals are allocated per user.

US Pat. No. 9,462,554

MOBILE STATION THAT ADJUSTS TRANSMISSION TIMING FOR SIGNAL

NTT DOCOMO, INC., Tokyo ...

1. A mobile station comprising:
a plurality of application processing unit that performs processing for a plurality of applications, respectively;
a management unit that manages a transmission timing of a periodic data which does not involve a user operation in each of
the plurality of applications; and

a transmission unit that transmits a connection request signal to a radio access network when the mobile station transitions
from a “Preservation state” to an “Active state,” wherein

the transmission unit adjusts a transmission timing for the connection request signal based on the transmission timings of
the periodic data which does not involve the user operation in the plurality of applications.

US Pat. No. 9,445,403

RADIO COMMUNICATION TERMINAL, BASE STATION APPARATUS, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication terminal that performs machine communication via a base station apparatus of a radio communication
system that is operated such that a frequency becomes a first band at a maximum, depending on performance which a communication
device supports, the radio communication terminal comprising:
a receiving section that has receiving performance to be able to support the first band, and that decodes an entire band of
the first band at least with respect to a time domain where a downlink control channel is allocated; and

a transmission section that has transmission performance to be able to support a second band having a narrower bandwidth than
the first band, and that allocates an uplink control channel and an uplink data channel to the second band,

wherein
the receiving section receives downlink control information and uplink control information that are transmitted together from
the base station apparatus, and

in the downlink control information and the uplink control information, information bits for identifying between uplink and
downlink are subtracted.

US Pat. No. 9,392,520

BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus that transmits reference signals to a first mobile terminal apparatus which receives a reference
signal for measuring a channel state, and to a second mobile terminal apparatus which receives a reference signal that is
set in a predetermined period at a lower abundance ratio than the first mobile terminal apparatus, the base station apparatus
comprising:
a reference signal allocation section that allocates the reference signals, to reference signal resources which are defined
for transmission of the reference signals and which can be muted, at an abundance ratio which allows the first mobile terminal
apparatus reception; and

a reference signal reporting section that reports resources where the reference signals are allocated, to the first mobile
terminal apparatus, and that, when reporting the resources where the reference signals are allocated, to the second mobile
terminal apparatus, reports part of the resources as resources to be muted.

US Pat. No. 9,380,570

RADIO BASE STATION APPARATUS, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio base station apparatus comprising:
a multiplication section configured to multiply downlink control information allocated to an extended downlink control channel
resource region in a resource block, by a user terminal-specific weight; and

a reporting section configured to report one group, among a plurality of groups that are configured by selecting different
antenna ports from a plurality of antenna ports corresponding to the number of transmission layers of a demodulation reference
signal, to the user terminal, wherein:

in each group, extended downlink control channel resource regions in the resource block and antenna ports to constitute the
group are associated with each other; and

the multiplication section multiplies a demodulation reference signal corresponding to an antenna port in the one group that
is associated with the extended downlink control channel resource regions where the downlink control information is allocated,
by the weight.

US Pat. No. 9,363,295

MOBILE COMMUNICATION METHOD AND APPLICATION SERVER APPARATUS

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising the steps of:
when a call session control server apparatus in an IP Multimedia Subsystem (IMS) receives a terminating signal directed to
a mobile station, sending the terminating signal from the call session control server apparatus to an application server apparatus
in the IMS, the terminating signal including call-type information indicating whether the terminating signal is for voice
communication or Audio Video (AV) communication; and

determining, by the application server apparatus, that a domain to which the terminating signal is to be transferred is a
radio access network supporting circuit switch, when the call-type information included in the terminating signal indicates
that the terminating signal is for AV communication and the AV communication via the IMS cannot be provided.

US Pat. No. 9,292,308

INFORMATION-PROCESSING DEVICE AND PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. An information-processing device comprising:
a controller;
a memory that stores a first software for controlling an arrangement of at least one first widget window and a plurality of
second software each comprising a respective widget for performing different functionalities and each associated with a respective
second widget window; the first software responsible for rendering of an upper layer independently from a rendering by the
second software responsible for rendering of a lower layer; and

a first key belonging to a first group of keys and a second key belonging to a second group of keys, the second key being
a different key than the first key, the first group of keys operable with the first software and the second group of keys
operable with the second software;

the controller configured to
acquire first operation information representing an operation of the first key, and second operation information representing
an operation of the second key,

upon acquiring the first operation information and the acquired first operation information instructing to change a currently
selected widget window included in the at least one first widget window, determine that the acquired first operation information
is provided to the first software, and provide the acquired first operation information to the first software,

specify a non-selected widget window included in the at least one first widget window as a new selected widget window by the
first software based on the first operation information, and change a display appearance of the new selected widget window
by the first software,

upon acquiring the first operation information or the second operation information, and the acquired first operation information
or the acquired second operation information instructing to display the at least one first widget window, determine that the
acquired first operation information or the acquired second operation information is provided to both the first software and
the second software, and provide the acquired first operation information or the acquired second operation information to
both the first software and the second software,

upon acquiring the first operation information and the acquired first operation information instructing to change a widget
window arrangement, determine that the acquired first operation information is provided to the first software, and provide
the acquired first operation information to the first software,

upon acquiring the second operation information and the second operation information representing an operation for the predetermined
processing, determine that the acquired second operation information is provided to the second software, and provide the acquired
second operation information to the second software without passing through the first software,

control execution of the first software based on the first operation information provided to the first software,
control the displaying of the at least one first widget window by the first software based on the first operation information,
control execution of the second software based on the second operation information provided to the second software, and
control the execution of a predetermined processing associated with the at least one first widget window by the second software
based on the second operation information.

US Pat. No. 9,241,303

MOBILE STATION AND METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile station comprising:
a public land mobile network registration storage memory configured to store information about public land mobile networks
including a public land mobile network selected by a manual operation, wherein the public land mobile network selected by
the manual operation is to be detected; and

circuitry configured to
select the public land mobile network selected by the manual operation for location registration, among the information about
the public land mobile networks stored in the public land mobile network registration storage memory, and

allow a user to manually reserve one of the public land mobile networks, the information about the public land mobile networks
being stored in the public land mobile network registration storage memory, so that the reserved public mobile network is
selected at a specified date and time.

US Pat. No. 9,218,788

INFORMATION-PROCESSING DEVICE AND PROGRAM FOR DISPLAYING A WINDOW GROUP INCLUDING A PLURALITY OF WINDOWS

NTT DOCOMO, INC., Tokyo ...

1. An information-processing device comprising:
a control unit comprising a processing unit and memory, wherein the processing unit executes a program stored in the memory
thereby controlling an operation of the information-processing device, the control unit configured to:

generate an image in which a size of the image is greater than a display area of a display unit, wherein a window group is
the image having a plurality of windows arranged therein, each of the plurality of windows corresponding to a running program;

select a window from the plurality of windows displayed on the display unit in accordance with an instruction made by a user;
in response to an instruction by the user to display the window group, control the display unit to reduce and display the
window group in a first size such that a whole of the image is displayed to fit within the display area of the display unit
and the user is able to recognize an arrangement of the plurality of windows by the image displayed on the display area of
the display unit, and then to display at least a part of the window group including the selected window in a second size that
is greater than the first size in the display area of the display unit by zooming in to the selected window, so that whole
of the selected window is displayed in the second size on the display area of the display unit; and

execute, if an operation unit receives an instruction from the user to specify a window after the selected window is displayed
in the second size on the display area of the display unit, a process associated with the specified window.

US Pat. No. 9,179,349

MOBILE TERMINAL APPARATUS, BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

18. A radio communication system comprising: a base station apparatus; and a mobile terminal apparatus connected to the base
station apparatus,
the base station apparatus comprising:
a transmitter that transmits radio frames of a victim cell including a protected subframe in the victim cell corresponding
to a subframe with reduced transmission power in an aggressor cell and a non-protected subframe in the victim cell corresponding
to a subframe with unreduced transmission power in the aggressor cell;

a CSI-RS allocation circuit configured to multiplex a CSI-RS (Channel State Information-Reference Signal), which is one of
reference signals, on the protected subframe or on the non-protected subframe, in a predetermined cycle;

a CRS allocation circuit configured to multiplex a CRS (Cell-specific Reference Signal), which is one of the reference signals,
on each subframe constituting the radio frames of the victim cell;

a receiver that receives two types of channel quality information of the protected subframe and the non-protected subframe
that is fed back from the mobile terminal apparatus having received the radio frames in the victim cell; and

a user data allocation process configured to allocate radio resources to the mobile terminal apparatus, and
the mobile terminal apparatus comprising:
a receiver that receives the protected subframe in the victim cell and the non-protected subframe in the victim cell, the
CRS being multiplexed on each of the subframes including the protected subframe and the non-protected subframe, and the CSI-RS
being multiplexed on the protected subframe or the non-protected subframe in a predetermined cycle;

a measurement circuit configured to measure channel quality from the reference signals multiplexed individually on the protected
subframe and the non-protected subframe; and

a transmitter that notifies the base station apparatus of the two types of channel quality information of the protected subframe
and the non-protected subframe, measured by the measurement circuit.

US Pat. No. 9,153,199

MOBILE EQUIPMENT, INFORMATION DISPLAY SYSTEM AND RECORDING MEDIUM

NTT DOCOMO, INC., Chiyod...

1. Mobile equipment communicating with a server and a display device, the mobile equipment comprising:
an alternative display searching part acquiring current position information indicating a current position of the mobile equipment,
sending an alternative display list request including the current position information to the server, receiving from the server
an alternative display list representing a list of display devices located within a predetermined distance from the current
position, selecting and determining a display device from among the display devices listed on the alternative display list
on the basis of an inter-device distance between the mobile equipment and each of the display devices, the selected display
device being a display device serving as an alternative destination display device;

an ME (Mobile equipment) short-distance radio communication part sending a distance measuring signal request signal to the
display devices by short-distance radio communication, receiving a distance measuring signal sent from the display devices
to measure a field strength of the distance measuring signal, and estimating the inter-device distance on the basis of the
field strength;

an ME (Mobile equipment) network connection part establishing communication with the alternative destination display device
and, when a predetermined event occurs on the mobile equipment, sending event information notifying the occurrence of the
event to the alternative destination display device;

an alternative display instruction determining part acquiring a parameter indicating a status of the mobile equipment, a status
of the alternative destination display device, or a status of the event that has occurred and determining, on the basis of
the parameter, display specifics of a display on the alternative destination display device; and

an alternative display instruction sending part sending a display instruction including the display specifics to the alternative
destination display device.

US Pat. No. 9,148,887

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method for performing transmission/reception of a data signal between a first mobile station and
a second mobile station through an interface between mobile stations set between the first mobile station and the second mobile
station without through a radio base station interface set between the mobile stations and a radio base station, comprising
the steps of:
transmitting, by the radio base station, a first setting signal regarding a first reference signal to the first mobile station
through the radio base station interface;

transmitting, by the radio base station, a second setting signal regarding a second reference signal to the second mobile
station through the radio base station interface;

transmitting, by the first mobile station, the first reference signal to the second mobile station through the interface between
mobile stations based on the first setting signal; and

transmitting, by the second mobile station, the second reference signal to the first mobile station through the interface
between mobile stations based on the second setting signal.

US Pat. No. 9,119,104

MOBILE COMMUNICATION METHOD AND RADIO BASE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method, further comprising:
a step A of transmitting, by a mobile station, a measurement report including measurement results of radio qualities of neighboring
cells in a downlink to a first radio base station that manages a first cell in which the mobile station is in communication;

a step B of selecting, by the first radio base station, a second cell from among the neighboring cells on the basis of the
measurement report;

a step C of transmitting to a second radio base station that manages the second cell, by the first radio base station, interference
indication information indicating influence of the interference being strong; and

a step D of the second radio base station starting the eICIC (enhanced inter cell interference coordination) in response to
the interference indication information and transmitting subframe information indicating an ABS (Almost Blank Subframe) to
the first radio base station.

US Pat. No. 9,094,815

BASE STATION IN MOBILE COMMUNICATION SYSTEM AND WAVE STOPPING METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station in a mobile communication system, the base station comprising:
a wireless communication interface configured to transmit and receive a wireless signal with a user apparatus in a cell,
circuitry configured to, in the case where the base station is connected to a communication network through a router, obtain
an address of the router, and periodically receive time information from a time information server through the communication
network, and

a memory configured to store the address of the router and a current time indicated by the time information, wherein
the circuitry is configured to,
(1) in the case where a period during which the storing of the current time is stopped is equal to or greater than a threshold
value,

transmit to the wireless communication interface a control signal for causing the wireless communication interface to stop
the transmission of the wireless signal, and

(2) in the case where the stopped period is less than the threshold value and is equal to or greater than another threshold
value, and an address just received from the router is different from the address stored in the memory,

transmit to the wireless communication interface a control signal for causing the wireless communication interface to stop
the transmission of the wireless signal.

US Pat. No. 9,064,500

SPEECH DECODING SYSTEM WITH TEMPORAL ENVELOP SHAPING AND HIGH-BAND GENERATION

NTT DOCOMO, INC., Tokyo ...

1. A speech decoding device for decoding an encoded speech signal, the speech decoding device comprising:
a processor;
a bit stream separator executed by the processor to separate a bit stream, which includes the encoded speech signal, into
an encoded bit stream and temporal envelope supplementary information, wherein the bit stream is received from outside the
speech decoding device;

a core decoder executed by the processor to decode the encoded bit stream obtained by the bit stream separator to obtain a
low frequency component;

a frequency transformer executed by the processor to transform the low frequency component obtained by the core decoder into
a spectral region;

a high frequency generator executed by the processor to generate a high frequency component by copying, from a low frequency
band to a high frequency band, the low frequency component transformed into the spectral region by the frequency transformer;

a primary high frequency adjuster executed by the processor to execute, on the high frequency component generated by the high
frequency generator, a part of a process including a gain adjustment, a noise addition, and an addition of sinusoids;

a low frequency temporal envelope analyzer executed by the processor to analyze the low frequency component transformed into
the spectral region by the frequency transformer in order to obtain temporal envelope information;

a supplementary information converter executed by the processor to use a predetermined table in order to convert the temporal
envelope supplementary information into a parameter for adjusting the temporal envelope information;

a temporal envelope adjuster executed by the processor to adjust the temporal envelope information obtained by the low frequency
temporal envelope analyzer in order to generate a gain coefficient, wherein the temporal envelope adjuster uses the parameter
and the temporal envelope information to generate the gain coefficient;

a temporal envelope shaper executed by the processor to shape a temporal envelope of an output signal generated by the primary
high frequency adjuster, using the gain coefficient, in order to generate an output signal of the temporal envelope shaper,
the output signal of the temporal envelope shaper containing the noise addition; and

a secondary high frequency adjuster executed by the processor to execute, on the output signal generated by the temporal envelope
shaper, the addition of sinusoids to the output signal of the temporal envelope shaper containing the noise addition.

US Pat. No. 9,048,977

RECEIVER TERMINAL DRIVEN JOINT ENCODER AND DECODER MODE ADAPTATION FOR SU-MIMO SYSTEMS

NTT DOCOMO, INC., Tokyo ...

1. A wireless communication system comprising:
a transmitter that is operable to transmit wireless signals using any of a plurality of encoding modes representing one or
more transmission rates; and

a user terminal having a receiver comprising
a decoding module to decode communications from the transmitter over a multiple-input, multiple output (MIMO) channel using
a decoding mode selected from a plurality of decoding modes, wherein at least one of the encoding modes is operable with more
than one of the decoding modes, and

a joint selection module to jointly select the decoding mode from the plurality of decoding modes to be used by the user terminal
with an encoding mode from the plurality of encoding modes to be used by the transmitter, the joint selection based on being
able to successfully transmit a corresponding data stream at a rate given by the encoding mode given channel conditions, and
additionally the joint selection based on a combination of receiver-dependent criteria corresponding to the jointly selected
decoding mode and encoding mode; channel information, receiver hardware and state, and application-specific constraints, the
joint selection module being operable to send information to identify the selected encoding mode to the transmitter using
a feedback channel.

US Pat. No. 9,438,396

RADIO COMMUNICATION SYSTEM, MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising a radio base station apparatus and a mobile terminal apparatus that is configured
to be able to communicate with the radio base station apparatus, wherein:
the radio base station apparatus comprises an allocation section configured to allocate Zadoff-Chu sequences in a new number
of randomized sequences, the new number being a number between the number of randomized sequences corresponding to a Zadoff-Chu
sequence having a length of a largest prime number, not exceeding a Zadoff-Chu sequence length required in an uplink demodulation
reference signal, and the number of randomized sequences defined in Rel. 10 LTE,

the mobile terminal apparatus comprises a generating section configured to generate demodulation reference signal sequences
using the Zadoff-Chu sequences allocated in the new number of randomized sequences, and

the number of randomized sequences defined in Rel. 10 LTE is set to 30 for bandwidth of 1 RB to 5 RBs, and is set to 60 for
bandwidth of 6 RBs or more.

US Pat. No. 9,398,590

MOBILE TERMINAL DEVICE AND RADIO BASE STATION APPARATUS

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal device comprising:
a feedback control signal generator that individually performs channel coding for a first precoding matrix indicator (PMI)
selected from a first codebook for wideband and a second PMI selected from a second codebook for subband; and

a transmitter that transmits the individually channel-coded first and second PMIs to a radio base station apparatus on a physical
uplink shared channel (PUSCH),

wherein the feedback control signal generator performs, in multiple-user multiple input multiple output (MU-MIMO) transmission,
channel coding for the first PMI at a channel coding rate lower than that of the second PMI, and performs, in single-user
MIMO (SU-MIMO) transmission, channel coding for the second PMI at a channel coding rate lower than that of the first PMI.

US Pat. No. 9,338,786

REFERENCE SIGNAL TRANSMITTING METHOD, MOBILE TERMINAL APPARATUS AND RADIO BASE STATION APPARATUS

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal apparatus that performs radio communication in a system band containing a plurality of component carriers,
comprising:
a control channel receiving section configured to receive downlink control information corresponding to each component carrier,
the downlink control information contains transmission control information of a reference signal for measuring channel quality
and wherein downlink control information corresponding to each component carrier is aggregated and assigned to a downlink
control channel of a specific component carrier;

a transmission setting section configured to control transmission of the reference signal for measuring channel quality based
on the transmission control information of the reference signal for measuring channel quality contained in the downlink control
information received by the control channel receiving section; and

a format reporting signal receiving section configured to receive format information of a bit field that is set based on a
number of component carriers to which resources can be allocated, wherein:

the downlink control information corresponding to each component carrier comprises the bit field in which identifier information
of a component carrier is set and the transmission control information of the reference signal for measuring channel quality
is also set in the bit field,

the format information is related to a correspondence relationship between the bit field, the identifier information, and
the transmission control information of the reference signal for measuring channel quality, and

the control channel receiving section reads the transmission control information of the reference signal for measuring channel
quality set in the bit field based on the format information.

US Pat. No. 9,277,441

REGISTERING A MOBILE TERMINAL IN A VISITED NETWORK BASED ON A PRIORITY CLASS DOWNLOADED FROM A MOBILE NETWORK

NTT DoCoMo, Inc., Chiyod...

1. A mobile communication control apparatus comprising:
a signal reception unit that receives an addressed signal transmitted from a mobile terminal that has moved to a movement
destination area corresponding to the mobile communication control apparatus from a movement source area corresponding to
another mobile communication control apparatus, the addressed signal being to be addressed to a home subscriber information
management apparatus;

a movement source identification unit that, when the signal reception unit receives the addressed signal, identifies the another
mobile communication control apparatus corresponding to the movement source area based upon a content of the addressed signal;

an information acquisition unit that acquires, from the another mobile communication control apparatus identified by the movement
source identification unit, priority class information indicating whether a transmission process of transmitting the addressed
signal to the home subscriber information management apparatus is a priority process or a non-priority process;

a determination unit that determines whether or not the addressed signal is to be transmitted to the home subscriber information
management apparatus based upon the priority class information acquired by the information acquisition unit; and

a transmission unit that transmits to the home subscriber information management apparatus the addressed signal in accordance
with a determination result of the determination unit.

US Pat. No. 9,185,546

MOBILE COMMUNICATION METHOD, SWITCH, AND SUBSCRIBER INFORMATION SERVER

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:
a step A in which, in location registration processing of a mobile station, a switch of a first communication scheme and a
switch of a second communication scheme send location update information to a subscriber information server, wherein the location
update information includes an information element the information element being used to determine whether or not all coverage
areas covered by the switches have a same capability of providing a telephony service by packet switching; and

a step B in which, when a status inquiry request made upon receipt of a terminating-call signal destined for the mobile station
is received from an application server, the subscriber information server determines based on the location update information
whether or not to make an inquiry at the switch of the first communication scheme or the switch of the second communication
scheme about whether or not providing the telephony service by packet switching is possible in an area where the mobile station
is located.

US Pat. No. 9,078,185

MOBILE COMMUNICATION SYSTEM, NETWORK APPARATUS, AND MOBILE COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication system configured to be capable of utilizing a plurality of frequencies in a predetermined area,
comprising:
selection circuitry configured to select a transition target frequency from the plurality of frequencies when a condition
under which a mobile communication terminal not utilize a transition source frequency being any of the plurality of frequencies
is fulfilled; and

instruction circuitry configured to instruct the mobile communication terminal to perform a transition to the transition target
frequency selected by the selection circuitry, wherein

the selection circuitry excludes the transition source frequency from a frequency candidate to be utilized by the mobile communication
terminal until an elapsed time after the

instruction of the transition to the transition target frequency exceeds a predetermined time.

US Pat. No. 9,071,647

CODEBOOK CREATING METHOD, CODEBOOK CREATING APPARATUS AND INITIAL CODEBOOK CREATING METHOD

NTT DOCOMO, INC., Tokyo ...

1. A codebook creating method in a radio communication system having a plurality of transmission antennas and a reception
antenna, the codebook creating method comprising the steps of:
acquiring amplitude or power of channel state information of channels between the transmission antennas and the reception
antenna; and

mapping elements of a codeword of an initial codebook dynamically to the respective transmission antennas based on the amplitude
or power of the channel state information thereby to create a first codebook.

US Pat. No. 9,451,483

MOBILE COMMUNICATION SYSTEM, COMMUNICATION SYSTEM, CONTROL NODE, CALL-PROCESSING NODE, AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Chiyod...

1. A mobile communication system that provides a mobile communication function to a mobile communication terminal and includes
a plurality of call-processing nodes, a call processing management database that is communicatively coupled with each of the
plurality of call-processing nodes via a communication path and holds data of each mobile communication terminal necessary
for call processing, and a control node, wherein
the control node comprises circuitry configured to
recognize states of the plurality of call-processing nodes;
select a call-processing node among the plurality of call-processing nodes for processing a call processing request from the
mobile communication terminal based on the states of the plurality of call-processing nodes; and

perform control so that the call processing request is directed to the selected call-processing node, and
at least one call-processing node of the plurality of call-processing nodes comprises circuitry configured to
receive the call processing request or one or more other call processing requests as directed by the control node;
acquire information of a corresponding mobile communication terminal related to the received call processing request from
the call processing management database, each time a processing request is received or each time a processing request is received
and the at least one call-processing node does not have valid information of the corresponding mobile communication terminal
related to the received call processing request, the information comprising state information indicating whether the corresponding
mobile communication terminal is in communication or at standby;

perform call processing related to the received call processing request using the information; and
store information of a result of the call processing in the call processing management database.

US Pat. No. 9,369,897

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

11. A radio communication method in a radio communication system comprising a plurality of radio base station apparatuses
and a user terminal that is configured to be able to perform coordinated multiple point transmission/reception with the plurality
of radio base station apparatuses, the radio communication method comprising the steps of:
at the user terminal, transmitting information to use to estimate a candidate cell to be an interference cell upon coordinated
multiple point transmission; and

at one of the plurality of radio base station apparatuses, estimating a shared data channel non-transmission candidate cell
based on the information.

US Pat. No. 9,247,475

RADIO CONTROL APPARATUS, CONNECTION DESTINATION SWITCHING METHOD, AND SYSTEM

NTT DOCOMO, INC., Tokyo ...

1. A radio control apparatus configured to control radio communication of a communication terminal in a first radio communication
system, the radio control apparatus comprising a processor, the processor comprising:
a determination unit configured to determine a call type of a communication of the communication terminal when a connection
destination of the communication terminal is switched to a second radio communication system;

a storing unit configured to repeatedly receive and store broadcast information, wherein the broadcast information is transmitted
in the second radio communication system; and

a communication unit configured to transmit a release redirection control signal to the communication terminal, wherein the
release redirection control signal indicates that a connection with the first radio communication system is to be disconnected,
and that a connection with the second radio communication system is to be established;

wherein, when the call type determined by the determination unit is a general call, the communication unit transmits the release
redirection control signal not including the broadcast information to the communication terminal, and

wherein, when the call type determined by the determination unit is an important communication call, the communication unit
transmits the release redirection control signal including the broadcast information to the communication terminal.

US Pat. No. 9,215,629

MOBILE COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method, comprising:
a step of a mobile switching center managing access information for defining an accessible Closed Subscriber Group (CSG) ID
of a mobile station;

a step of a first radio base station transmitting, upon deciding to perform a handover of the mobile station from a cell subordinate
to the first radio base station to a cell subordinate to a second radio base station accommodated in a gateway device, a handover
request signal including identification information of the mobile station and a Closed Subscriber Group (CSG) ID of the second
radio base station to the mobile switching center; and

a step of the mobile switching center determining whether the mobile station can access the second radio base station based
on the identification information of the mobile station and the Closed Subscriber Group (CSG) ID of the second radio base
station included in the handover request signal, with reference to the access information.

US Pat. No. 9,173,113

MOBILE COMMUNICATION TERMINAL

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication terminal for receiving downlink signals from a desired base station by orthogonal frequency division
multiple access, comprising:
multiple receiving antennas for receiving electric waves;
an interference rejection combining processor adapted for obtaining a received signal vector with regard to each of multiple
resource elements from signals derived from electric waves received by the multiple receiving antennas, and adapted for calculating
receiving weights so as to suppress influence to a desired beam of electric wave sent from the desired base station by other
beams, on the basis of the received signal vectors;

a non-interference-rejection receiving weight calculator adapted for calculating receiving weights so as not to suppress influence
to the desired beam of electric wave sent from the desired base station by other beams;

a signal separator adapted for separating a signal destined for the mobile communication terminal from signals destined for
other mobile communication terminals among signals derived from electric waves received at the multiple receiving antennas;

an interference rejection combining determiner adapted for determining whether the receiving weights calculated by the interference
rejection combining processor or the receiving weights calculated by the non-interference-rejection receiving weight calculator
should be used for signal separation by the signal separator, on the basis of an index representing a relationship between
reception quality of a downlink transmission signal from the desired base station to the mobile communication terminal and
reception quality of an interfering signal sent from another base station and received by the mobile communication terminal,

a reception quality measurer adapted for measuring reception qualities of signals sent from different base stations and received
by the mobile communication terminal in order to facilitate searching the desired base station to which the mobile communication
terminal should connect; and

a quality ratio calculator adapted for calculating a ratio of a reception quality of a signal from the desired base station
measured by the reception quality measurer to a reception quality of a signal from another base station measured by the reception
quality measurer, wherein

the interference rejection combining determiner is adapted for comparing the ratio calculated by the quality ratio calculator
with a threshold, for determining that the receiving weights calculated by the interference rejection combining processor
should be used for signal separation by the signal separator if the ratio is less than the threshold, and for determining
that the receiving weights calculated by the non-interference-rejection receiving weight calculator should be used for signal
separation by the signal separator, instead of the receiving weights calculated by the interference rejection combining processor,
if the ratio is greater than the threshold.

US Pat. No. 9,100,952

BASE STATION APPARATUS, MOBILE STATION APPARATUS AND CONTROL INFORMATION TRANSMISSION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A base station apparatus comprising:
a control section configured to adaptively control a size of a UE-specific search space depending on the number of component
carriers to which a PDSCH for a mobile station apparatus is assigned;

a control information generation section configured to generate control information reflecting a control result by the control
section; and

a transmission section configured to transmit the control information to the mobile station apparatus by RRC signaling.

US Pat. No. 9,048,912

MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal apparatus comprising:
a reference signal generator configured to generate an uplink reference signal with use of a signal sequence which is orthogonalized
by shifting a start point;

a cyclic shift section configured to cyclically shift a plurality of the uplink reference signals so that the uplink reference
signals are orthogonalized;

a spreading section configured to obtain orthogonal codes for orthogonalizing the uplink reference signals from a radio base
station apparatus and make the uplink reference signals able to be orthogonalized between users based on the orthogonal codes;
and

a transmitter configured to transmit the cyclically shifted uplink reference signals to the radio base station apparatus via
a plurality of antenna ports in an uplink,

wherein the transmitter is able to transmit, via the antenna ports, the uplink reference signals comprising first to fourth
uplink reference signals,

the spreading section applies a first orthogonal code to the first and second uplink reference signals and applies a second
orthogonal code, which is different from the first orthogonal code, to the third and fourth uplink reference signals, and

the cyclic shift section cyclically shifts the uplink reference signals in such a manner that cyclic shift values of the first
and second uplink reference signals are shifted from each other by a half of total resources, cyclic shift values of the third
and fourth uplink reference signals are shifted from each other by the half of total resources and the cyclic shift values
of the respective uplink reference signals differ from each other.

US Pat. No. 9,398,522

MOBILE STATION, SMALL RADIO BASE STATION, AND COMMUNICATION CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile station used in a mobile communication system provided with a macro cell and a small cell, where the small cell
is any of a first cell capable of being operated independently of the macro cell and a second cell incapable of being operated
independently of the macro cell, the mobile station comprising:
a reception unit configured to detect a prescribed signal transmitted by the small cell; and
a control unit configured to determine whether a sequence in the prescribed signal is a sequence for the first cell or a sequence
for the second cell, wherein

when the sequence in the prescribed signal is determined as the sequence for the first cell, the control unit is configured
to start communication in the small cell on the basis of broadcast information of the small cell, and

when the sequence in the prescribed signal is determined as the sequence for the second cell, the control unit is configured
to start the communication in the small cell on the basis of a control signal from the macro cell.

US Pat. No. 9,385,794

MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile terminal apparatus comprising:
a channel estimation circuit configured to perform channel estimation using a downlink reference signal;
a PMI selecting circuit configured to select a PMI (Precoding Matrix Indicator) using a channel estimation value obtained
in the channel estimation circuit;

an IQI measuring circuit configured to measure an IQI (Interference Quality Indicator) using at least the channel estimation
value and the PMI; and

a transmission circuit configured to transmit at least the PMI and the IQI to a radio base station apparatus, wherein the
base station generates precoding weights using the PMI and the IQI, and performs coordinated multipoint transmission utilizing
MIMO transmission using the precoding weights,

wherein the IQI measuring circuit obtains the IQI using at least one equation selected from the group of equations consisting
of:


wherein
Hij: Downlink channel state;

Fij: PMI feedback from a mobile terminal apparatus i;

Pavg,j: Average total transmission power of a radio base station apparatus j;

ICIi: Interference except interference from a cell belonging to a CoMP set in the mobile terminal apparatus i; and

N: Average noise.

US Pat. No. 9,369,848

INFORMATION DISTRIBUTION APPARATUS, INFORMATION DISTRIBUTION METHOD AND PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. An information distribution apparatus, comprising:
a receiving unit that receives identification data from each of a plurality of wireless terminals that have received a radio
signal transmitted from one of a plurality of wireless devices, the plurality of wireless devices being installed at specified
locations, and the received identification data being unique to the one of the plurality of wireless devices from which the
wireless terminals have received a radio signal;

a classifying unit that classifies the plurality of wireless terminals into groups based on identification data received by
the receiving unit, the groups being formed of a plurality of wireless terminals that have received a radio signal from a
same wireless device; and

a distributing unit that distributes distribution data to a wireless terminal classified into a group by the classifying unit,
the distribution data corresponding to the group,

wherein:
the receiving unit further receives location data indicative of a location of the wireless terminal; and
the distributing unit distributes distribution data with a predetermined restriction to one of the plural wireless terminals
classified into groups by the classifying unit, the distribution data corresponding to a group into which the wireless terminal
has been classified, when a location of the wireless terminal indicated by location data received by the receiving unit is
not within a predetermined area including a location where the wireless device corresponding to the group is installed.

US Pat. No. 9,272,720

INFORMATION PROCESSING APPARATUS, COMMUNICATION TERMINAL, INFORMATION PROCESSING METHOD, AND PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. An information processing apparatus comprising:
an acquiring unit that acquires accident information representing an accident on a transport line in a transport network including
a plurality of transport lines, the accident occurring during operation of at least one vehicle, wherein the vehicle is a
train including a plurality of cars;

a first specifying unit that specifies a terminal location and a moving direction, the terminal location showing a location
of a communication terminal that notifies information to a passenger on one of the vehicles running on one of the transport
lines, the moving direction being a direction of the communication terminal on the transport line;

a determination unit that determines an impact of the accident represented by the accident information acquired by the acquiring
unit, to the passenger who is moving from the terminal location specified by the first specifying unit in the moving direction;

a transmission unit that transmits the accident information acquired by the acquiring unit and impact information that represents
an impact determined by the determination unit for that accident information to the communication terminal,

a first storage unit that stores, for each stop where more than two transport lines are passing, in association, a first transport
line that is passing a stop, a second transport line that can be transferred to from the first transport line at the stop,
and a first car position, which is a position of a car that requires a shortest transfer time in the train on the first transport
line that stops at that stop; and

a second specifying unit that specifies a second car position, which is a position of the car in which the communication terminal
resides in the train that stops at the stop,

wherein the determination unit determines that an influence of the accident that has occurred on the second transport line,
which is stored in the first storage unit associated with the first transport line and the first car position, is larger on
the passenger in a car that is in the second car position, if a difference between the second car position specified by the
second specifying unit on the train running on the first transport line and the first car position stored in the first storage
unit associated with the first transport line is in a predetermined range, than in a case where the difference is not in the
predetermined range.

US Pat. No. 9,146,636

MOBILE INFORMATION TERMINAL AND PLACEMENT AREA ACQUISITION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile information terminal provided with a pressure sensor array that acquires a gripping pressure distribution, the
mobile information terminal comprising:
circuitry configured to function as
a gripping pressure logger adapted to record time-series changes in gripping pressure at each pressure sensor forming the
pressure sensor array;

a gripping pressure change point detection unit comprising a gripping pressure change amount calculation section adapted to
acquire time-series changes in gripping pressure at each pressure sensor and to determine whether the amount of change in
gripping pressure per unit time exceeds a predetermined value at any pressure sensor; and

a placement area acquisition section adapted to acquire a placement area for a controllable object with reference to a position
where the amount of change in gripping pressure per unit time exceeds the predetermined value, the position being hereafter
referred to as a change point, when the amount of change in gripping pressure per unit time exceeds the predetermined value
at any pressure sensor, wherein

the gripping pressure change point detection unit further comprises a change frequency counting section adapted to count the
number of times the amount of change in gripping pressure per unit time exceeds the predetermined value in each predetermined
period of time, the number being hereafter referred to as a change frequency; and

the placement area acquisition section acquires the placement area for the controllable object with reference to a position
where the counted change frequency exceeds a predetermined value, the position being hereafter referred to as a change frequency
exceeding point, in a period of time in which the counted change frequency exceeds the predetermined value.

US Pat. No. 9,999,031

MOBILE COMMUNICATION METHOD, RADIO BASE STATION, AND MOBILE STATION

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method comprising:transmitting, with a first MOBILE STATION, a data signal to a RADIO BASE STATION through a RADIO BASE STATION interface set between the first MOBILE STATION and the RADIO BASE STATION;
transmitting, with the first MOBILE STATION, a data signal to a second MOBILE STATION through an inter-MOBILE STATION interface set between the first MOBILE STATION and the second MOBILE STATION;
transmitting, with the first MOBILE STATION, a first buffer status report indicating an amount of data retained in a transmission buffer corresponding to a logical channel in the RADIO BASE STATION interface to the RADIO BASE STATION;
transmitting, with the first MOBILE STATION, a second buffer status report indicating an amount of data retained in a transmission buffer corresponding to a logical channel in the inter-MOBILE STATION interface to the RADIO BASE STATION; and
determining, with the RADIO BASE STATION, which the buffer status report is, the first buffer status report or the second buffer status report, based on predetermined information included in the received buffer status report.

US Pat. No. 9,337,907

RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND RADIO COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A user terminal receiving signals CoMP (Coordinated Multi-Point) transmitted from a plurality of radio base station apparatuses,
the user terminal comprising:
a reception circuit that receives downlink control information including 1-bit given information used in initialization of
a pseudo random sequence; and

a signal processing circuit that performs signal processing using a reference signal sequence which is generated by using
the pseudo random sequence initialized with use of an equation including a term defined based on the given information,

wherein, when the given information is “1”, the term is user-specific information other than cell identification information.

US Pat. No. 9,313,014

RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, RADIO BASE STATION APPARATUS AND USER TERMINAL

NTT DOCOMO, INC., Tokyo ...

1. A radio communication system comprising:
a first radio base station apparatus that transmits downlink data to a user terminal using a plurality of cells that respectively
correspond to fundamental frequency blocks of varying frequency bands; and

a second radio base station apparatus that transmits downlink data to the user terminal using a cell that corresponds to fundamental
frequency block of a same frequency band as one of the plurality of cells, wherein:

the user terminal receives the downlink data in a system band that is formed with cells that are selected respectively from
the first radio base station apparatus and the second radio base station apparatus;

the first radio base station apparatus and the second radio base station apparatus perform coordinated multiple-point transmission
for the user terminal, between the cells corresponding to a same fundamental frequency block;

the first radio base station apparatus and/or the second radio base station apparatus report information about a combination
of cells that perform the coordinated multiple-point transmission to the user terminal;

the first radio base station apparatus and/or the second radio base station apparatus transmit downlink control information
to control downlink data that is transmitted from a cell that performs the coordinated multiple-point transmission, using
a downlink control channel of a predetermined cell; and

the user terminal identifies the cell where the downlink data is allocated by combination of a bit field of the downlink control
information and higher layer signaling.

US Pat. No. 9,253,437

MOBILE COMMUNICATION METHOD AND MOBILITY MANAGEMENT NODE

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication method in a mobile communication system which includes a first radio access network not supporting
circuit-switched communications, a mobile transmission network which connects the first radio access network, a second radio
access network supporting the circuit-switched communications, and a service control network, and which is capable of switching
from a path via the first radio access network to a path via the second radio access network without disconnection of a path
for video call performed between a first mobile station and a second mobile station, the mobile communication method comprising
the steps of:
deciding a switching method for the video call by the service control network when a video bearer and a voice bearer which
configure a path for the video call are set;

retaining information on the switching method decided, information on the video bearer, and information on the voice bearer,
by the mobile transmission network before switching from a path via the first radio access network to a path via the second
radio access network is initiated; and

switching the path for the video call performed between the first mobile station and the second mobile station from the path
via the first radio access network to the path via the second radio access network, based on the information on the switching
method, the information on the video bearer, and the information on the voice bearer, which are retained by the mobile transmission
network.

US Pat. No. 9,419,771

COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND COMMUNICATION METHOD

NTT DOCOMO, INC., Tokyo ...

1. A communication system employing carrier aggregation using a first carrier and a second carrier that is allocated in addition
to the first carrier, the system comprising:
a first base station apparatus and a mobile terminal apparatus that communicate using the first carrier; and
a second base station apparatus that communicates with the mobile terminal apparatus using the second carrier, wherein the
first base station apparatus comprises: a generating circuit that generates a carrier detection signal to make the mobile
terminal apparatus detect the second carrier, such that the carrier aggregation is executed with the first carrier; and

a transmission circuit that transmits the carrier detection signal to the second base station apparatus, such that the carrier
detection signal is transmitted from the second base station apparatus to the mobile terminal apparatus using the second carrier
in which the carrier detection signal is allocated with a higher density than a reference signal of the first carrier; and

wherein the mobile terminal apparatus comprises:
a receiving circuit that receives the carrier detection signal from the second base station apparatus,
wherein, in the second carrier, based on an allocation pattern of the carrier detection signal distributed in a time axis
direction and in a frequency direction in one resource block as a reference, a plurality of orthogonal patterns that are given
by shifting the allocation pattern in the frequency direction are defined, and

wherein, in the second carrier, based on a plurality of mutually varying allocation patterns as a reference, a plurality of
orthogonal patterns that are given by shifting each of the plurality of allocation patterns in the frequency direction are
defined.

US Pat. No. 9,386,394

MOBILE COMMUNICATION TERMINAL AND TERMINAL CONTROL METHOD

NTT DOCOMO, INC., Tokyo ...

1. A mobile communication terminal comprising:
circuitry configured to
select a mobile communication network in which location registration is to be performed to maximize a total number of applications
capable of being started upon location registration;

perform location registration in the selected mobile communication network;
determine an application to be started in accordance with the mobile communication network in which the location registration
is made; and

start the application to be started in accordance with the mobile communication network in which the location registration
is made.

US Pat. No. 9,153,202

OBJECT DISPLAY DEVICE, OBJECT DISPLAY METHOD, AND OBJECT DISPLAY PROGRAM

NTT DOCOMO, INC., Tokyo ...

1. An object display device that includes an object information storage memory configured to store virtual object information
about a virtual object in association with a marker that is a predetermined sign located in real space, extracts the marker
from an image in real space, and overlays and displays a virtual object associated with the extracted marker on the image
in real space, the object display device comprising:
an image acquisition device configured to acquire an image in real space; and
circuitry configured to
acquire shade information indicating an appearance position of a shadow in real space at present;
correct at least one of the acquired image in real space and the marker stored in the object information storage memory, based
on the acquired shade information, so as to enable extraction of a marker free from effects of a shadow;

extract the marker from the image in real space using the image in real space and the marker at least one of which is corrected;
and

a display configured to display an overlaid image in which an image of the virtual object associated with the marker in the
object information storage memory is overlaid on the image in real space,

wherein the circuitry performs correction of the marker stored in the object information storage memory by adding a color
tone component of a shadow to the marker stored in the object information storage memory, in accordance with a location of
the marker, based on the acquired shade information, and

the circuitry extracts the corrected marker from the acquired image in real space.