US Pat. No. 9,113,367

METHOD, APPARATUS AND SYSTEM FOR DETERMINING VOLTAGE STANDING WAVE RATIO IN A DOWNLINK PERIOD OF RADIO COMMUNICATION

OPTIS CELLULAR TECHNOLOGY...

12. An apparatus for detecting a Voltage Standing Wave Ratio (VSWR) in a downlink period of a radio communication, comprising:
a forward branch, adapted for coupling a forward signal into a Transmitter Observation Receiver (TOR) via the Radio Frequency
(RF) switch;

a reversed branch, adapted for feeding a reversed signal in a reversed path from a third port of a circulator into the TOR
via the RF switch;

a TOR receiver, adapted for making down conversion, filtering and converting the forward signal and the reversed signal from
an analog signal into digital baseband signal respectively;

a processor module, adapted for measuring and storing power levels of the forward signal and the reversed signal in form of
digital baseband; and

calculating a VSWR or a Return Loss (RL) value from the stored power levels of the forward signal and the reversed signal.

US Pat. No. 10,098,133

METHODS AND SYSTEMS FOR SCHEDULING RESOURCES IN A TELECOMMUNICATION SYSTEM

Optis Cellular Technology...

1. A method for transmitting scheduling requests from a mobile terminal to a base station, the method comprising:sending a scheduling request to the base station, wherein the scheduling request is associated with first data to be transmitted to the base station;
transmitting a buffer status report to the base station in response to receiving a scheduling grant;
receiving second data for transmission to the base station while the first data is waiting to be transmitted to the base station;
transmitting a subsequent scheduling request (SR) to the base station if a buffer status of the mobile terminal has changed, wherein a change in the buffer status of the mobile terminal comprises an amount of time that has elapsed since a previous SR was transmitted exceeds a threshold.

US Pat. No. 9,100,159

METHOD FOR EFFECTIVELY TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Optis Cellular Technology...

8. A method implemented in a user equipment for transmitting a reception acknowledgement in a wireless communication system,
the method comprising:
receiving one or more downlink packets in a plurality of downlink subframes from a base station;
determining an ACK/NACK condition for the plurality of downlink subframes as favorable or unfavorable; and
transmitting an ACK/NACK signal on an uplink channel based on the determined ACK/NACK condition,
wherein a resource used for transmission of the ACK/NACK signal is associated with a resource to receive a downlink packet
in a prior downlink subframe of the plurality of downlink subframes.

US Pat. No. 9,497,772

METHOD AND APPARATUS FOR INDICATING ALLOCATION OF DISTRIBUTED COMMUNICATION RESOURCES

Optis Cellular Technology...

6. A method for a user equipment receiving downlink data using resource blocks in a wireless mobile communication system,
the method comprising:
receiving downlink control information including resource allocation information for the downlink data from a base station;
and

receiving the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information,
wherein:
the resource allocation information indicates virtual resource block (VRB) allocations for the user equipment;
each resource block corresponds to one time slot;
a resource block pair includes a first resource block associated with a first time slot and a second resource block associated
with a second time slot adjacent to the first time slot, where the first resource block and the second resource block are
allocated to the same frequency indices;

a mapping relationship between VRB pairs and PRB pairs exists such that frequency consecutive VRB pairs are mapped to non-frequency
consecutive PRB pairs and that each resource block pair is split so there is a frequency gap between the first resource block
and the second resource block of the resource block pair; and

the resource allocation information indicates the frequency gap size is one of a first value and a second different value.

US Pat. No. 9,055,464

RLC DATA TRANSMISSION CONTROL BASED ON UE MEMORY CAPACITY

OPTIS CELLULAR TECHNOLOGY...

1. A radio network node for controlling data transmission with a wireless communication device which communicates with the
radio network node over an air interface, the radio network node comprising one or more processing circuits operable to:
set a radio link control (RLC) window size for a first logical connection established with the wireless communication device
over the air interface, the RLC window size indicating a number of RLC protocol data units (PDUs);

periodically estimate a total amount of memory available at the wireless communication device for storing RLC PDUs; and
controlling transmission of RLC PDUs associated with the first logical connection to the wireless communication device based
on the estimated total amount of memory available at the wireless communication device for storing RLC PDUs, or based on the
RLC window size set for the first logical connection if the RLC window size limits the transmission of the RLC PDUs more than
the estimated total amount of memory available at the wireless communication device; and wherein the one or more processing
circuits are operable to:

estimate the total amount of memory available at the wireless communication device for storing RLC PDUs by calculating a memory
usage estimate for the wireless communication device;

estimate uplink memory usage at the wireless communication device by summing up an amount of data contained in received uplink
RLC PDUs following a last in-sequence acknowledged RLC PDU in a downlink status report sent to the wireless communication
device; and

apply a correction factor to the memory usage estimate which accounts for at least one of delay that occurs before the wireless
communication device receives and processes the downlink status report and delay associated with RLC PDUs which are sent by
the wireless communication device and not received and processed by the radio network before the memory usage estimate is
calculated.

US Pat. No. 9,197,246

ITERATIVE DECODING OF BLOCKS WITH CYCLIC REDUNDANCY CHECKS

Optis Cellular Technology...

1. A method for decoding a transport block including multiple sub-blocks, each of which can be decoded iteratively, wherein
the transport block also includes a single cyclic redundancy check, CRC, over an entirety of the transport block; the method
comprising acts of:
performing a decoding iteration on a particular sub-block of the multiple sub-blocks;
checking the CRC for the entirety of the transport block using decoded bits obtained from the decoding iteration on the particular
sub-block and decoded bits obtained from a most recent decoding iteration on other sub-blocks of the multiple sub-blocks;
and

performing a decoding iteration on a different sub-block if the CRC does not check.

US Pat. No. 9,294,318

SYMBOL DETECTION FOR ALLEVIATING INTER-SYMBOL INTERFERENCE

Optis Cellular Technology...

1. A receiver configured to perform symbol detection, the receiver comprising:
a plurality of receive antennas configured to receive a frequency domain signal that comprises contribution from a block of
time domain symbols; and

electronic circuitry configured to divide the block into plural sub-blocks and for each sub-block:
perform joint detection of symbols of the sub-block while, during the joint detection, treating all symbols of the block which
are outside of the sub-block as noise;

generate plural joint hypotheses for the time domain symbols in the sub-block;
determine common waveform cross-correlation terms that are common for performing an evaluation of a decision metric for different
sub-blocks;

perform an evaluation of a decision metric for each of the plural joint hypotheses based, at least in part, on the common
waveform cross-correlation terms; and

detect correct symbols based, at least in part, on the evaluation of the decision metric.

US Pat. No. 9,301,311

METHODS AND SYSTEMS FOR SCHEDULING RESOURCES IN A TELECOMMUNICATION SYSTEM

OPTIS CELLULAR TECHNOLOGY...

1. A method for transmitting scheduling requests from a mobile terminal to a base station, the method comprising:
receiving a first scheduling grant from the base station;
transmitting a buffer status report to the base station in response to the first scheduling grant;
receiving a HARQ ACK from the base station for the first scheduling grant;
receiving second data for transmission to the base station while first data is waiting to be transmitted to the base station;
triggering transmission of a second scheduling request (SR) to the base station only if the mobile terminal lacks an uplink
grant to transmit the second data and a buffer status of the mobile terminal has changed since a last acknowledged buffer
status report from the mobile terminal to the base station; and

cancelling the second scheduling request if a scheduling grant is received from the base station before the second scheduling
grant has been transmitted.

US Pat. No. 9,263,987

OSCILLATOR CIRCUIT

OPTIS CELLULAR TECHNOLOGY...

1. An oscillator circuit, comprising;
a resonator connected in parallel to a first and a second port of a feedback amplifier, with a third and a fourth port of
the feedback amplifier being connectable to ground,

wherein the feedback amplifier comprises:
at least one amplifier element comprising the first, second, and third ports, and
a feedback network comprising the fourth port and being connected to the amplifier element via the third port, the third and
fourth ports being physically decoupled from the first port,

wherein the feedback network has an absolute impedance value that is below a certain first predefined limit and a phase value
that increases with the operational frequency of the oscillator circuit with a rate that is above a second predefined limit,
and

wherein the resonator has a fixed oscillation frequency and the feedback network has a resonance frequency which is essentially
equal to the oscillation frequency of the resonator.

US Pat. No. 9,386,567

SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING

Optis Cellular Technology...

1. A method for transmitting a signal at a base station in a mobile communication system, the method comprising:
performing repetition coding on an information bit to generate a plurality of information bits;
obtaining a plurality of modulation symbols from the plurality of information bits;
mapping the plurality of modulation symbols to one or more orthogonal frequency division multiplexing (OFDM) symbols; and
transmitting the plurality of mapped modulation symbols,
wherein the plurality of modulation symbols are mapped separately from each other in a frequency domain when the plurality
of modulation symbols are mapped to one OFDM symbol, and

wherein at least two of the plurality of modulation symbols are mapped separately from each other in the frequency domain
to a same OFDM symbol when the plurality of modulation symbols are mapped to two OFDM symbols.

US Pat. No. 9,265,031

COMMUNICATION PROTOCOL FOR SHORT DATA TRANSMISSIONS

Optis Cellular Technology...

1. A method implemented by a base station in a wireless communication network for supporting small data transmissions by a
wireless device, said method comprising:
associating a preconfigured device identifier for the wireless device with a tunnel between the base station and a serving
gateway;

receiving, at the base station, a medium access control packet from the wireless device over a wireless communication channel
via a lightweight communication protocol, said medium access control packet including application data transmitted by the
wireless device for delivery to a destination device, said lightweight communication protocol comprising a protocol stack
consisting essentially of an application layer, a media access control layer, and a physical layer;

mapping the preconfigured device identifier of the wireless device to the associated tunnel; and
forwarding a data packet containing said application data to said serving gateway through the associated tunnel.

US Pat. No. 9,113,455

METHOD AND DEVICE RELATING TO REPLAY TECHNIQUE

OPTIS CELLULAR TECHNOLOGY...

1. A method for mapping each radio bearer over a Uu interface to a corresponding radio bearer over a Un interface of a relay
device in a wireless communication network, including:
creating a first context for a User Equipment (UE) with an original IMSI (International Mobile Subscriber Identity) of the
UE at the Uu interface of the relay device, wherein the first context includes information for the radio bearer over the Uu
interface;

creating a second context for the UE with an allocated relay identity at the Un interface of the relay device, wherein the
allocated relay identity has a relationship with the original IMSI, and wherein the second context includes information for
the radio bearer over the Un interface;

forming a relationship between the first context and the second context based on the relationship between the original IMSI
and the allocated relay identity; and

mapping the radio bearer over the Uu interface to the radio bearer over the Un interface based on the relationship between
the first context and the second context.

US Pat. No. 9,385,833

DEVICE AND METHOD FOR CONTROLLING INTERFERENCE

Optis Cellular Technology...

1. A method in a transceiver for enabling control of interference cancelling in the transceiver, the transceiver being in
a first decoding mode, the method comprising:
storing a received signal comprising a data block;
decoding the received signal using the first decoding mode to obtain the data block, wherein the first decoding mode is a
non-interference decoding mode;

when an event is triggered, retrieving the stored signal, the event being associated with at least one of:
a block error rate,
a number of corrected decoded signals,
a code rate,
a transport block size,
a signal to interference and noise ratio,
a change of a serving cell, and
a location of the transceiver in a cell;
decoding the retrieved stored signal using a second decoding mode to obtain the data block, wherein the second decoding mode
is an interference decoding mode;

controlling the interference cancelling in the transceiver, based on the data block decoded using the first decoding mode
and the data block decoded using the second decoding mode;

wherein the controlling the interference cancelling in the transceiver comprises determining whether the transceiver remains
in the first decoding mode or changes to the second decoding mode.

US Pat. No. 9,144,044

METHODS PROVIDING AIDED SIGNAL SYNCHRONIZATION AND RELATED NETWORK NODES AND DEVICES

OPTIS CELLULAR TECHNOLOGY...

1. A method providing signal synchronization at a wireless terminal communicating with a radio access network, the method
comprising:
receiving, from the radio access network, a command to add a first carrier on a first frequency as a link for transmissions
from the radio access network to the wireless terminal, wherein the command comprises a parameter having a first status or
a second status;

responsive to and after receiving the command to add the first carrier, determining if the first carrier can be synchronized
using synchronization signals of a second carrier on a second frequency different than the first frequency, wherein the command
to add the first carrier is different than the synchronization signals of the second carrier, and wherein the synchronization
signals include at least one of Primary Synchronization Channel signals, Secondary Synchronization Channel signals, and/or
Cell Specific Reference signals;

if it is determined based on the first status that the first carrier can be synchronized using synchronization signals of
the second carrier, synchronizing the first carrier using synchronization signals of the second carrier on the second frequency
different than the first frequency;

if it is determined based on the second status that the first carrier cannot be synchronized using synchronization signals
of the second carrier, synchronizing the first carrier using synchronization signals of the first carrier;

wherein the first status is defined by one of an absence of the parameter in the command and a presence of the parameter in
the command, and wherein the second status is defined by the other of the absence of the parameter in the command and the
presence of the parameter in the command.

US Pat. No. 9,350,513

METHOD FOR EFFECTIVELY TRANSMITTING CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Optis Cellular Technology...

9. A method implemented in a base station that transmits configuration information in a wireless communication system, the
method comprising:
receiving and transmitting radio signals;
generating configuration control information that includes ACK/NACK feedback mode indicator to indicate whether a user equipment
communicating with the base station should (a) send an ACK/NACK signal in a one-to-one mapping between a downlink subframe
and a corresponding uplink ACK/NACK signal or (b) send an ACK/NACK signal in an N-to-one mapping between N downlink subframes,
where N is an integer greater than one, and a corresponding single uplink ACK/NACK signal, and

providing the configuration control information to a radio transceiver in the base station, and
transmitting the configuration control information to one or more user equipments.

US Pat. No. 9,503,916

METHOD FOR TRANSMITTING STATUS REPORT OF PDCP LAYER IN MOBILE TELECOMMUNICATIONS SYSTEM AND RECEIVER OF MOBILE TELECOMMUNICATIONS

Optis Cellular Technology...

1. A method for transmitting a status report in a packet data convergence protocol (PDCP) layer of a mobile communication
system, the method comprising:
generating, by a receiving side, the status report for one or more PDCP service data units (SDUs) that were transmitted from
a transmitting side,

wherein the status report indicates whether or not the transmitted PDCP SDUs have been successfully received at the receiving
side,

wherein the status report is generated in a form of a bitmap, and
wherein a specific bit in the bitmap indicates whether or not a corresponding one of the PDCP SDUs has successfully been received,
and

transmitting, by the receiving side, the status report to the transmitting side.

US Pat. No. 9,397,731

SIGNALING SUPPORT FOR ANTENNA SELECTION USING SUBSET LISTS AND SUBSET MASKS

OPTIS CELLULAR TECHNOLOGY...

1. A wireless communication apparatus, comprising:
a processor; and
a memory with instructions stored therein, wherein the instructions are accessible and processable by the processor, wherein
the processor is configured to:

obtain an antenna subset list that identifies one or more configurations of virtual antennas associated with a scheduling
unit that is associated with at least one base station, wherein at least one identified configuration of virtual antennas
includes a plurality of virtual antennas and wherein the antenna subset list indicates whether one virtual antenna or multiple
virtual antennas of the at least one identified configuration can be selected for transmission;

use the antenna subset list to aid in selecting which virtual antenna(s) in the configuration of virtual antennas to use for
transmissions, wherein the processor further employs a weighted antenna subset mask to prioritize one or more of the virtual
antenna(s) which where indicated as being available in the antenna subset list; and

send an antenna selection signal that contains information requesting the scheduling unit to use the selected virtual antenna(s)
for transmissions.

US Pat. No. 9,184,771

DIGITAL DOWN CONVERSION AND DEMODULATION

Optis Cellular Technology...

8. A tunable radio frequency (RF) receiver, the RF receiver comprising:
a signal processor, the signal processor sampling and demodulating a signal, the signal processor including:
a sampling frequency determination module, the sampling frequency determination module being tunable to determine a sampling
frequency of the signal based on a carrier frequency of the signal, a predetermined bandwidth and a safety margin so that
a bandwidth of the signal substantially falls within a predetermined frequency zone associated with the determined sampling
frequency;

an analog-to-digital converter, the analog-to-digital converter sampling the signal at the determined sampling frequency;
and

a digital demodulator, the digital demodulator digitally demodulating the determined sampled signal at a demodulation frequency,
the demodulation frequency being tunable to be substantially equal to a baseband alias of a carrier frequency of the signal,
wherein:

when frequency inversion is not performed on an alias of the signal, then the demodulation frequency is chosen to satisfy
the following relationship:

and
when frequency inversion is performed on an alias of the signal, then the demodulation frequency is chosen to satisfy the
following relationship:


where fdemod is the demodulation frequency, fcarrier is the carrier frequency, fs is the determined sampling frequency and the function, ?arg?, denotes the greatest integer less than the argument.

US Pat. No. 9,059,848

METHOD AND ARRANGEMENT IN A WIRELESS COMMUNICATION SYSTEM

OPTIS CELLULAR TECHNOLOGY...

1. A method in a user equipment for receiving feedback from a base station concerning the reception status of data sent to
the base station, the base station and the user equipment are comprised in a wireless communication system adapted for contention
based transmissions, the base station is adapted to serve user equipments within a cell of a cellular network, the method
comprising the user equipment unit:
receiving a contention based grant sent from the base station to the cell of the cellular network, wherein the contention
based grant initiates uplink data transfer from at least one user equipment of the plurality of user equipments which is uplink
time aligned,

sending data to the base station,
receiving feedback from the base station on a channel that is transmitted to plural user equipments and wherein whether the
feedback is acknowledgment feedback “ACK” or non-acknowledgment feedback “NACK” depends on whether the base station has verified
that data has been correctly received from at least one of the plural user equipments, and

if an ACK is received, preparing to send new data to the base station, when next grant is received, and
if a NACK is received, the method further comprising:
triggering a radio link control retransmission, and
activating a sending prohibit timer, which sending prohibit timer prevents the user equipment from using any grants received
from the base station before the sending prohibit timer has timed out, and wherein the sending prohibit timer is arranged
to be deactivated when a dynamic grant, dedicated to the user equipment, is received.

US Pat. No. 9,814,033

RECEIVING CONTROL INFORMATION THROUGH PDCCH

Optis Cellular Technology...

1. A user equipment (UE) for decoding control information, the UE comprising:
a receiver configured to receive control information through a Physical Downlink Control Channel (PDCCH) at a subframe k;
a decoder configured to monitor a set of PDCCH candidates for the received control information, the set of PDCCH candidates
being defined in terms of search spaces,

wherein:
the decoder is configured to monitor a UE-specific search space of the PDCCH, among the search spaces, at multiple levels
of control channel elements (CCEs),

the CCE is a resource unit including a number of resource elements for transmission of the control information,
the UE-specific search space is given based on a variable of Yk for the subframe k defined by: Yk=(A*Yk-1) mod D, where A and D are predetermined values, and

Yk in the subframe k is based on an UE identifier.

US Pat. No. 9,408,226

METHOD FOR SCHEDULING DISTRIBUTED VIRTUAL RESOURCE BLOCKS

Optis Cellular Technology...

1. A method for receiving downlink data using resource blocks at a user equipment in a wireless mobile communication system,
the method comprising:
receiving downlink control information including resource allocation information for the downlink data from a base station;
and

receiving the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information,
wherein:
the resource allocation information indicates virtual resource block (VRB) allocations for the user equipment;
indexes of PRBs to which the downlink data are mapped are determined based on mapping relationship between VRBs and the PRBs;
the mapping relationship is defined such that indexes of the VRBs are mapped to indexes of the PRBs for a first part and a
second part of a subframe; and

the received downlink control information includes control information that determines whether the indexes of the PRBs for
the second part are separated with respect to the indexes of the PRBs for the first part based on a predetermined gap in a
distributed mode where distributed VRBs are used or whether the indexes of the PRBs for the second part are not separated
with respect to the indexes of the PRBs for the first part in a non-distributed mode where localized VRBs are used.

US Pat. No. 9,351,228

METRIC COMPUTATION FOR INTERFERENCE-AWARE ROUTING

Optis Cellular Technology...

25. A method comprising:
for each link of a plurality of links between transmitters and receivers of at least a subset of a plurality of network nodes
in a wireless mesh network, obtaining two or more mutual information based link metrics for the link, wherein each of the
two or more mutual information based link metrics comprises a mutual information based link metric for the link for a different
one of the two or more transmission modes for the link;

computing a plurality of routing metrics for a plurality of potential routes through the wireless mesh network from a first
network node to a second network node as a function of the two or more mutual information based link metrics for ones of the
plurality of links included in the plurality of potential routes;

selecting one of the plurality of potential routes having a best routing metric from the plurality of routing metrics as a
best route from the first network node to the second network node, the best route also being indicative of a best transmission
mode for each link from the plurality of links that is included in the best route; and

updating a routing table to reflect the best route from the first network node to the second network node.

US Pat. No. 9,100,869

METHOD AND APPARATUS FOR GRANT-BASED UPLINK TRANSMISSION SCHEDULING

OPTIS CELLULAR TECHNOLOGY...

1. A method of alleviating transport network congestion on a flow-controlled backhaul connection of a wireless communications
network node, wherein the method comprises:
a network node controlling an aggregate bit rate of uplink traffic from a plurality of users supported by the network node,
wherein the network node controls the bit rate of uplink traffic from each user based on making uplink grants to the user
according to a defined grant table;

the network node receiving flow control signaling in cases of transport network congestion on a flow-controlled backhaul connection,
said flow control signaling indicating a desired fractional reduction in the aggregate bit rate of uplink traffic from the
plurality of users; and

the network node setting an effective uplink bit rate for a time period for one or more first users in the plurality of users
based on the desired fractional reduction in the aggregate bit rate, wherein the effective uplink bit rate is not directly
obtainable from the defined grant table for each first user, and wherein setting the effective uplink bit rate comprises the
network node making a plurality of uplink grants over the time period using two or more uplink bit rates selected from the
defined grant table for each first user.

US Pat. No. 9,531,502

METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM FOR HANDLING STATUS INFORMATION OF DATA UNITS

Optis Cellular Technology...

1. A method in a receiving node for handling status information of data units transmitted from a sending node to the receiving
node over a radio link, each data unit having a respective sequence number, the method comprising:
determining that a number of data units transmitted by the sending node are missing at the receiving node;
generating a reduced status message comprising negative acknowledgments for a first part of the missing data units and omitting
negative acknowledgments for the rest of the missing data units;

setting an ACK SN field of the status message to the sequence number of the first missing data unit for which a negative acknowledgement
is omitted from the status message; and

sending the status message from the receiving node to the sending node over the radio link.

US Pat. No. 9,369,997

METHODS AND ARRANGEMENTS FOR COORDINATING UPLINK TRANSMIT DIVERSITY MODE ADAPTATION

Optis Cellular Technology...

1. A method in a base station associated with a mobile terminal in a cellular communication network comprising a control node,
the method comprising:
obtaining information related to a prioritized set of allowed uplink transmit diversity modes that are currently allowed for
the mobile terminal, wherein the prioritized set of allowed transmit diversity modes is selected from at least Uplink Multiple
Input Multiple Output, Closed Loop Transmit Diversity, Open Loop Transmit Diversity, and a default transmit mode, and the
prioritized set of allowed uplink transmit diversity modes comprises the uplink transmit diversity modes of equal or lower
power priority level, as compared to the uplink transmit diversity mode configured for the mobile terminal by the control
node;

selecting the highest priority uplink transmit diversity mode for the mobile terminal from the prioritized set of allowed
uplink transmit diversity modes, based on information concerning the mobile terminal, available in the base station; and

indicating the selected uplink transmit diversity mode to the mobile terminal.

US Pat. No. 9,320,001

METHOD OF PERFORMING UPLINK SYNCHRONIZATION IN RANDOM ACCESS PROCEDURE

OPTIS CELLULAR TECHNOLOGY...

1. A method of performing a random access procedure by a mobile terminal in communication with a base station, comprising:
starting a time alignment timer upon applying first time alignment information that is received from a base station, the time
alignment timer being used to control how long the mobile terminal is considered uplink time aligned;

transmitting a random access preamble to the base station, wherein the transmitted random access preamble is selected by the
mobile terminal;

receiving from the base station a random access response as a response to the random access preamble, the random access response
including an uplink resource assignment and second time alignment information;

wherein the random access procedure is a contention based random access procedure, and:
if the time alignment timer is running, ignoring the second time alignment information; and
if the time alignment timer is not running, starting the time alignment timer and applying the second time alignment information,
and when contention resolution for the mobile terminal is not successful, stopping the time alignment timer.

US Pat. No. 9,107,105

METHOD AND APPARATUS FOR CHANNEL PREDICTING

OPTIS CELLULAR TECHNOLOGY...

1. A channel predicting method in a communication network comprising a time-varying wireless channel, the method comprising:
determining a prediction strategy;
selecting a certain number of channel samples from candidate channel samples in accordance with the prediction strategy, the
channel samples each corresponding to one symbol in a time domain;

determining prediction weights in accordance with the prediction strategy and statistical properties of the time-varying wireless
channel;

weighting the selected channel samples with the determined prediction weights to obtain a predicting channel sample as a prediction
result.

US Pat. No. 9,485,350

METHOD FOR MANAGING MENU FUNCTION IN MOBILE STATION

Optis Cellular Technology...

1. A method for managing menu functions in a portable device, the method comprising:
in response to a first user input that selects a first menu item from a basic menu, performing a function that corresponds
with the first menu item form the basic menu;

in response to a second user input, entering an easy menu editing process, the easy menu editing process being a process in
which a user input selects a menu item from the basic menu for inclusion in an easy menu, the easy menu including a menu item
that represents the basic menu;

receiving a third user input that selects a second menu item from the basic menu to be included in the easy menu;
including the second menu item in the easy menu in response to the third user input;
finishing the easy menu editing process;
displaying the easy menu so that the second menu item and the menu item that represents the basic menu are displayed together
in the easy menu; and

displaying menu items of the basic menu in response to a fourth user input that selects, from the easy menu, the menu item
that represents the basic menu.

US Pat. No. 9,432,937

METHOD FOR PERFORMING RANDOM ACCESS PROCEDURES AND TERMINAL THEREOF

Optis Cellular Technology...

1. A method of performing a random access procedure between a mobile terminal and a network, the method performed by the mobile
terminal and comprising:
transmitting, a first type of random access preamble or a second type of random access preamble, to the network;
receiving a random access response sent from the network in response to the first type of random access preamble or the second
type of random access preamble;

wherein the first type of random access preamble is based on preamble selection by the mobile terminal, and the second type
of random access preamble is not based on preamble selection by the mobile terminal;

wherein the transmitting step and the receiving step being carried out for the first type of Random Access Preamble denote
a contention-based random access procedure, and

wherein the first type of Random Access Preamble is a contention-based preamble;
the method further comprising:
starting a contention resolution timer;
monitoring a downlink control channel while the contention resolution timer operates;
applying a back-off time if the identifier that indicates allocation of radio resources for a new transmission is not received
upon expiration of the contention resolution timer; and

performing random access procedures again after the back-off time,
wherein the downlink control channel is not monitored during the back-off time.

US Pat. No. 9,264,919

METHOD, NODE AND SYSTEM FOR MANAGEMENT OF A MOBILE NETWORK

Optis Cellular Technology...

1. A method for estimating performance in a mobile network, the method comprising the operations of:
receiving localized, user equipment measurement from a user equipment (UE) in the mobile network;
incorporating the user equipment measurement in a set of user equipment measurements; determining at least one antenna characteristics
model for the set of user equipment measurements;

determining a path loss model for the set of user equipment measurements;
determining an applicable antenna characteristics model for the user equipment measurement and estimate antenna impact on
the user equipment measurement;

estimating path loss related to the user equipment measurement;
deducting estimated antenna impact from the estimated path loss to determine a localized, instantaneous performance measurement;
and

repeating the operations to generate a spatial performance map for the mobile network, wherein updates to the spatial performance
map are based on further user equipment measurements from the user equipment in the mobile network.

US Pat. No. 9,100,871

HYBRID CONGESTION CONTROL

OPTIS CELLULAR TECHNOLOGY...

1. A method for congestion control in a communication network comprising a transport network interconnecting a radio access
node and a control node, said method comprising:
monitoring for a congestion event in said transport network; and
switching, in response to a detected congestion event in said transport network, from a window-based state providing a window-based
congestion control mode for a data flow towards said radio access node involving notifying an application level transport
protocol implemented in a data sending source associated with said data flow of any congestion event to a rate-based state
providing a rate-based congestion control mode for said data flow involving said radio access node transmitting a rate-reducing
message to said control node triggering a reduction in a bitrate of said data flow.

US Pat. No. 9,521,650

UE WAKE-UP AHEAD OF PAGING OCCASIONS TO RETRIEVE PAGING CONFIGURATION INFORMATION WHEN IN (LONG) DRX

Optis Cellular Technology...

1. A method for transmission of paging information from a mobile network to a terminal device, the method comprising:
according to a discontinuous reception cycle, the terminal device entering a sleep mode in which the terminal device is not
monitoring a downlink control channel transmitted by the mobile network;

the terminal device determining an advance wakeup time for leaving the sleep mode, said advance wakeup time being advanced
by an advancement time interval with respect to a start of an active time of the discontinuous reception cycle;

at the determined advance wakeup time, the terminal device leaving the sleep mode and starting monitoring the downlink control
channel with respect to paging configuration information from the mobile network, the paging configuration information defining
a paging occasion for the transmission of the paging information; and

on the basis of the paging configuration information, the terminal device monitoring the paging occasion to receive the paging
information from the mobile network.

US Pat. No. 9,451,605

RECEIVING CONTROL INFORMATION THROUGH PDCCH

Optis Cellular Technology...

1. A user equipment (UE) for decoding control information, the UE comprising:
a receiver configured to receive, from a base station, subframes with control regions including a Physical Downlink Control
Channel (PDCCH);

a decoder configured to decode a set of PDCCH candidates within a UE-specific search space of the PDCCH during a subframe
k,

wherein each PDCCH candidate of the set of PDCCH candidates includes a defined number L of control channel elements (CCEs),
wherein the CCEs, for a first PDCCH candidate of the set of PDCCH candidates, are located at a position within the subframe
k determined recursively using randomly-generated numbers,

wherein the UE-specific search space of the PDCCH in the subframe k has different locations among different UEs, and
wherein the UE is configured to determine the position within the UE-specific search space of the PDCCH in the subframe k
based on an identifier associated with the UE and a time-varying subframe identifier.

US Pat. No. 9,385,904

METHOD AND APPARATUS FOR PILOT POWER ALLOCATION IN A MULTI ANTENNA COMMUNICATION SYSTEM

Optis Cellular Technology...

1. A method in a network node for adjusting common pilot power in a four-way transmit antenna (4Tx) communications system,
the method comprising:
receiving instructions from a base station to adjust the common pilot power based on a criterion associated with a set of
scheduled mobile terminals, which base station comprises a first transmit antenna, a second transmit antenna, a third transmit
antenna and a fourth transmit antenna, wherein the criterion represents at least one of a Channel State Information (CSI)
estimate associated with the set of scheduled mobile terminals and a number of scheduled mobile terminals configured with
4Tx Multiple Input Multiple Output (MIMO) in the set of scheduled mobile terminals; and

adjusting the common pilot power for the third transmit antenna and the fourth transmit antenna of the base station based
on the received instructions.

US Pat. No. 9,288,719

LINK ADAPTATION FOR A MULTI-HOP ROUTE IN A WIRELESS MESH NETWORK

Optis Cellular Technology...

1. A network node in a wireless mesh network, comprising:
a radio subsystem comprising a transmitter and a receiver; and
a processing subsystem associated with the radio subsystem and configured to:
receive from a downstream network node of the network node in a route through the wireless mesh network, via the radio subsystem,
information that is indicative of one or more bottleneck information flow rates determined by the downstream network node
for the route;

determine one or more new bottleneck information flow rates for the route based on the one or more bottleneck information
flow rates determined by the downstream network node for the route;

transmit to an upstream network node of the network node in the route through the wireless mesh network, via the radio subsystem,
information that is indicative of the one or more new bottleneck information flow rates for the route;

receive from the upstream network node, via the radio subsystem, information that is indicative of a target information flow
rate for a wireless link from a transmitter of the upstream network node to the receiver of the network node; and

select a Modulation and Coding Scheme, MCS, for the transmitter of the radio subsystem of the network node for use when transmitting
information over the route in the wireless mesh network that yield a lowest information flow rate that is greater than or
equal to the target information flow rate received from the upstream network node.

US Pat. No. 9,124,407

METHOD OF GENERATING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Optis Cellular Technology...


US Pat. No. 9,197,375

METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM FOR HANDLING STATUS INFORMATION OF DATA UNITS

OPTIS CELLULAR TECHNOLOGY...

1. A method in a receiving node for handling status information of data units transmitted from a sending node to the receiving
node over a radio link, each data unit having a respective sequence number, the method comprising:
determining that a number of data units transmitted by the sending node are missing at the receiving node; and
sending a status message from the receiving node to the sending node over the radio link, the status message comprising negative
acknowledgements for a first part of the missing data units and omitting negative acknowledgements for the rest of the missing
data units, wherein said sending comprises setting an ACK_SN field of the status message to the sequence number of the first
missing data unit for which a negative acknowledgement is omitted from the status message.

US Pat. No. 9,800,687

METHOD AND DEVICE FOR IMPROVING THE TRANSMISSION EFFICIENCY IN A COMMUNICATION SYSTEM WITH A LAYERED PROTOCOL STACK

OPTIS CELLULAR TECHNOLOGY...

1. A method for efficient transmission in a mobile communication system with a layered protocol stack, the layered protocol
stack comprising an upper protocol layer, a lower protocol layer, and a physical layer, the method comprising:
initiating a transmission, by a control procedure of the lower protocol layer, with a variable channel access delay that comprises
at least two separate components including a component of random length;

detecting, by the lower protocol layer, a start of the transmission;
indicating to the upper protocol layer, by the lower protocol layer, a time associated with the start of transmission, wherein
the indication is sent between the at least two separate components of the variable channel access delay and prior to the
component of random length; and

starting at least one timer of the upper protocol layer according to the indication from the lower protocol layer at the time
associated with the start of transmission.

US Pat. No. 9,444,584

METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM FOR HANDLING STATUS INFORMATION OF DATA UNITS

Optis Cellular Technology...

1. A method in a receiving node for handling status information of data units transmitted from a sending node to the receiving
node over a radio link, each data unit having a respective sequence number, the method comprising:
determining that a number of data units transmitted by the sending node are missing at the receiving node;
generating a reduced status message comprising negative acknowledgments for a first part of the missing data units and omitting
negative acknowledgments for the rest of the missing data units;

setting an ACK SN field of the status message to the sequence number of the first missing data unit for which a negative acknowledgement
is omitted from the status message; and

sending the status message from the receiving node to the sending node over the radio link.

US Pat. No. 9,462,563

METHOD AND APPARATUS FOR COMPENSATING SIGNAL TIMING MEASUREMENTS FOR DIFFERENCES IN SIGNAL FREQUENCIES

Optis Cellular Technology...

1. A method of compensating timing measurement values obtained in a wireless communication network having multiple carriers
operating at different carrier frequencies, said method implemented in a single first node configured for operation in the
wireless communication network and comprising:
obtaining, by the single first node, a first timing measurement value for a first radio signal transmitted by the single first
node at a first carrier frequency to a single second node;

obtaining, by the single first node, a second timing measurement value for a second radio signal transmitted by the single
first node at a second carrier frequency to the single second node, the second radio signal being associated with the first
radio signal;

determining, by the single first node, whether timing compensation is needed for either or both of the first timing measurement
value or the second timing measurement value, based at least in part, on an association with an emergency call and a frequency
distance between the first carrier frequency and the second carrier frequency;

responsive to determining that timing compensation is needed, deriving, by the single first node, a compensation value based
on frequency-dependent propagation differences between the first carrier frequency and the second carrier frequency, wherein
adjusting either or both of the first timing measurement value or the second timing measurement value using the compensation
value substantially accounts for the frequency-dependent propagation differences; and

providing, by the single first node to the single second node or other node configured for operation in the wireless communication
network, the compensation value for use in compensating either or both of the first timing measurement value or the second
timing measurement value when used in processing by the single second node or the other node dependent on either or both of
the first timing measurement value or the second timing measurement value.

US Pat. No. 9,515,803

APPARATUS AND METHOD FOR PROCESSING CONFIGURATION INFORMATION RECEIVED FROM A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM

Optis Cellular Technology...

7. A method implemented in a user equipment that receives configuration information from a base station in a wireless communication
system, the method comprising:
receiving radio signals carrying configuration control information that includes an ACK/NACK feedback mode indicator;
receiving downlink subframes;
process the ACK/NACK feedback mode indicator to determine if the ACK/NACK feedback mode indicator indicates the user equipment
should (a) send an ACK/NACK signal in a one-to-one mapping between a downlink subframe and a corresponding uplink ACK/NACK
signal or (b) send an ACK/NACK signal in an N-to-one mapping between N downlink subframes, where N is an integer greater than
one, and a corresponding single uplink ACK/NACK signal; and

transmitting one or more ACK/NACK signals in accordance with the determination of the processor.

US Pat. No. 10,014,923

SIGNALING SUPPORT FOR ANTENNA SELECTION USING SUBSET LISTS AND SUBSET MASKS

OPTIS CELLULAR TECHNOLOGY...

1. A wireless communication apparatus, comprising:a processor; and
a memory with instructions stored therein which are able to be processed by the processor to facilitate:
obtaining an antenna subset list which identifies a configuration of virtual antennas, which represent a mapping of signals to physical antenna elements, associated with a scheduling unit that is associated with an at least one base station;
measuring pilot signals from the physical antenna elements;
selecting which configuration of at least one of the virtual antennas should be used for transmissions using the antenna subset list, the measured pilot signals, and a weighted antenna subset mask to prioritize one or more of the virtual antennas which are indicated as being available in the antenna subset list; and
sending an antenna selection signal which contains information requesting a scheduling unit to use said selected at least one virtual antennas for transmissions, wherein said antenna subset list is:
a concurrent combination of a first antenna subset list and a second antenna subset list that allows up to one virtual antenna to be selected from the first antenna subset list and up to one virtual antenna to be selected from the second antenna subset list.

US Pat. No. 9,967,864

SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING

OPTIS CELLULAR TECHNOLOGY...

1. A method for transmitting a signal at a base station in a mobile communication system, the method comprising:performing repetition coding on an information bit to generate a plurality of codeword bits;
obtaining a plurality of modulation symbols from the plurality of codeword bits;
mapping the plurality of modulation symbols to one or more resource-element groups; and
transmitting the plurality of mapped modulation symbols,
wherein at least two of the plurality of modulation symbols are mapped separately from each other in the frequency domain within a same time duration.

US Pat. No. 9,942,781

METHOD FOR TRANSMITTING STATUS REPORT OF PDCP LAYER IN MOBILE TELECOMMUNICATIONS SYSTEM AND RECEIVER OF MOBILE TELECOMMUNICATIONS

Optis Cellular Technology...

1. A method for transmitting in a packet data convergence protocol (PDCP) layer of a mobile communication system a status report for PDCP service data units (SDUs), the method comprising:generating, by processing circuitry in a receiving node, a PDCP control packet data unit (PDU) to communicate a status report for SDUs transmitted from a transmitting node,
wherein the PDCP control PDU includes a data/control (D/C) bit field to indicate whether the PDCP control PDU is a data PDU or a control PDU, a control PDU type field to indicate a type of corresponding control information, and an optional bitmap field for a bitmap, which when included in the PDCP control PDU, indicates whether or not the transmitted PDCP SDUs have been successfully received at the receiving node using a specific bit in the bitmap to indicate whether or not a corresponding one of the PDCP SDUs has successfully been received, and
transmitting, by a transmitter in the receiving node, the PDCP control PDU to the transmitting node.

US Pat. No. 9,743,424

METHOD AND APPARATUS FOR INDICATING ALLOCATION OF DISTRIBUTED COMMUNICATION RESOURCES

Optis Cellular Technology...

8. A method for receiving downlink data at a user equipment using resource blocks in a wireless mobile communication system,
the method comprising:
receiving, by a radio receiver, downlink control information including resource allocation information for a downlink data
transmission;

receiving and processing the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information,wherein:
the resource allocation information indicates virtual resource block (VRB) allocations for the user equipment,
indexes of the PRBs to which the downlink data are mapped are determined based on a mapping relationship between virtual resource
blocks (VRBs) and the PRBs,

the mapping relationship is defined as indexes of the VRBs that are mapped to the indexes of the PRBs for a number of slots
included in a subframe,

indexes of the PRBs for an odd-numbered slot are shifted with respect to indexes of the PRBs for an even-numbered slot based
on a predetermined gap, and

an index of one of the PRBs on each of the number of slots that is mapped to an index of one of the VRBs is determined by
using a value of the predetermined gap and a number of the VRBs.

US Pat. No. 10,104,684

METHOD AND APPARATUS FOR DETERMINING ALLOCATION OF COMMUNICATION RESOURCES

Optis Cellular Technology...

8. A method for receiving downlink data at a user equipment using resource blocks in a wireless mobile communication system, the method comprising:receiving, by a radio receiver, downlink control information including resource allocation information for a downlink data transmission;
receiving and processing, by one or more processors, the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information that indicates virtual resource block (VRB) allocations for the user equipment,
wherein:
indexes of the PRBs to which the downlink data are mapped are based on a mapping relationship between virtual resource blocks (VRBs) and the PRBs, where indexes of the VRBs are mapped to the indexes of the PRBs for a number of slots included in a subframe, the subframe having a first part and a second part,
when distributed VRBs are used, indexes of the PRBs for an odd-numbered slot are shifted with respect to indexes of the PRBs for an even-numbered slot based on a predetermined gap, and an index of one of the PRBs on each of the number of slots included in the subframe that is mapped to an index of one of the VRBs is determined based on a value of the predetermined gap and a number of the distributed VRBs, and
when localized VRBs are used, the indexes of the PRBs for the second part are not separated with respect to the indexes of the PRBs for the first part.

US Pat. No. 9,985,722

METHOD OF PERFORMING UPLINK SYNCHRONIZATION IN RANDOM

Optis Cellular Technology...

1. A method of performing a contention based random access procedure by a mobile communication terminal in communication with a base station, the method comprising:transmitting a random access preamble message to the base station;
receiving a random access response from the base station, the random access response including a timing advance command;
determining a status of a mobile communication terminal time alignment timer; and
whether contention resolution is successful or not, ignoring the timing advance command if the mobile communication terminal time alignment timer is determined to be running in the determining step.

US Pat. No. 10,123,321

DECODING CONTROL INFORMATION RECEIVED OVER A CONTROL CHANNEL

Optis Cellular Technology...

1. A method for decoding control information by a User Equipment (UE), the method comprising:receiving a Physical Downlink Control Channel (PDCCH) at subframe k; and
decoding at the subframe k a set of PDCCH candidates including L control channel elements (CCEs),
wherein:
the L CCEs are contiguously located from a position given by using a variable of Yk and a modulo (N/L) operation,
N represents a total number of CCEs in the subframe k,
Yk is defined by Yk=(A*Yk?1) mod D,
A and D are predetermined constant values, and
when k=0, Y?1 is determined based on a UE identifier having 16-bits.

US Pat. No. 9,807,688

METHOD FOR PERFORMING RANDOM ACCESS PROCEDURES AND TERMINAL THEREOF

Optis Cellular Technology...

1. A communications terminal configured to perform a random access procedure with a network, comprising:
a transmitter to transmit to the network a first type of random access preamble or a second type of random access preamble;
a receiver to receive a random access response sent from the network in response to transmission of the first type of random
access preamble or the second type of random access preamble;

where the first type of random access preamble is based on a preamble selection by the communications terminal, the second
type of random access preamble is not based on a preamble selection by the communications terminal, and the first type of
random access preamble is a contention-based preamble for a contention-based random access procedure;

a contention resolution timer; and
processing circuitry to:
start operation of the contention resolution timer;
decode a downlink control channel while the contention resolution timer operates;
apply a back-off time when an indication of allocation of radio resources for a new transmission is not received by a time
when the contention resolution timer expires;

stop decoding the downlink control channel during the back-off time; and
perform random access again after the back-off time.

US Pat. No. 9,706,531

SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING

OPTIS CELLULAR TECHNOLOGY...

1. A method for transmitting a signal at a base station in a mobile communication system, the method comprising:
performing repetition coding on an information bit to generate a plurality of information bits;
obtaining a plurality of modulation symbols from the plurality of information bits;
mapping the plurality of modulation symbols to one or more orthogonal frequency division multiplexing (OFDM) symbols; and
transmitting the plurality of mapped modulation symbols,
wherein at least two of the plurality of modulation symbols are mapped separately from each other in the frequency domain
to a same OFDM symbol.

US Pat. No. 10,306,489

METHOD FOR TRANSMITTING STATUS REPORT OF PDCP LAYER IN MOBILE TELECOMMUNICATIONS SYSTEM AND RECEIVER OF MOBILE TELECOMMUNICATIONS

Optis Cellular Technology...

9. A method for transmitting in a packet data convergence protocol (PDCP) layer of a mobile communication system a status report for PDCP service data units (SDUs), the method comprising:generating a PDCP control packet data unit (PDU) to communicate a status report for one or more PDCP SDUs transmitted from a transmitting node,
wherein the PDCP control PDU includes a data/control (D/C) bit field to indicate the PDCP control PDU is a control PDU, a control PDU type field to indicate a type of corresponding control information, a sequence number field to indicate a first missing PDCP SDU, and a bitmap field for a variable length bitmap, and
wherein a specific bit in the variable length bitmap indicates whether a corresponding one of the one or more PDCP SDUs has been successfully been received, and
transmitting the PDCP control PDU to the transmitting node.

US Pat. No. 10,631,321

METHOD AND APPARATUS FOR DETERMINING ALLOCATION OF COMMUNICATION RESOURCES

Optis Cellular Technology...

1. A method for receiving a downlink data packet in a user equipment operable in a wireless mobile communication system supporting a resource allocation scheme distributively mapping virtual resource blocks (VRBs) to physical resource blocks (PRBs), the method comprising:receiving, by the user equipment, downlink control information including resource block assignment information for the downlink data packet; and
receiving, by the user equipment, the downlink data packet based on the downlink control information,
wherein interleaved indexes of the VRBs of the downlink data packet map to Ns slots of a frame of the downlink data packet with a gap for distribution in each of the Ns slots,
wherein Ns denotes a number of slots included in the frame of the downlink data packet,
wherein an index of one of the PRBs on each of Ns slots, which maps to an index of one of the VRBs, is based on Ngap and NDVRB, and
wherein Ngap is a value of the gap for distribution and NDVRB is a number of the VRBs.

US Pat. No. 10,298,376

METHOD OF GENERATING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Optis Cellular Technology...


US Pat. No. 10,341,059

METHOD AND ARRANGEMENTS IN A TELECOMMUNICATION SYSTEM FOR HANDLING STATUS INFORMATION OF DATA UNITS

OPTIS CELLULAR TECHNOLOGY...

1. A method in a receiving side of an Acknowledgement Mode (AM) Radio Link Control (RLC) entity for handling status information of RLC Data Protocol Data Units (PDUs) transmitted from a peer AM RLC entity to the AM RLC entity over a radio link, each RLC Data PDU having a respective Sequence Number (SN), the method comprising:detecting that a number of RLC Data PDUs transmitted by the peer AM RLC entity are lost;
constructing a STATUS PDU to include NACK_SNs for a first part of the missing RLC Data PDUs and omitting NACK_SNs for the rest of the missing RLC Data PDUs;
setting an ACK_SN field of the STATUS PDU to the SN of the next not received RLC Data PDU for which a NACK_SN is omitted from the STATUS PDU; and
sending the STATUS PDU from the AM RLC entity to the peer AM RLC entity over the radio link.

US Pat. No. 10,349,348

METHOD AND MOBILE TERMINAL FOR PERFORMING RANDOM ACCESS

Optis Cellular Technology...

1. A mobile terminal comprising:communication circuitry; and
processing circuitry is configured to cause the communication circuitry to:
transmit to a network (i) a first type of random access preamble selectable by the mobile terminal from a set of random access preambles or (ii) a second type of random access preamble directly allocated to the mobile terminal by the network;
receive a random access response from the network in response to the first type of random access preamble or the second type of random access preamble; and
perform a discontinuous reception (DRX) operation that allows the mobile terminal to monitor a Physical Downlink Control Channel (PDCCH) discontinuously, where the DRX operation includes an active time period during which the mobile terminal is configured to monitor the PDCCH after successful reception of the random access response for the second type of random access preamble until a transmission from the network addressed to a Cell-Radio Network Temporary Identifier (C-RNTI) is received,
wherein for transmission of the first type of random access preamble, the processing circuitry is configured to:
select a random access preamble among the set of random access preambles;
identify resources to be used in transmitting the selected random access preamble; and
cause the communication circuitry to transmit the selected random access preamble using the identified resources.

US Pat. No. 10,374,775

METHOD FOR TRANSMITTING UPLINK SIGNALS

Optis Cellular Technology...

1. A method for transmitting signals including ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals in a mobile communication system, the method comprising:mapping reference signals on predetermined time domain units corresponding to first specific symbols of a two-dimensional resource region comprising a plurality of symbols, wherein the two-dimensional resource region comprises plural time domain units in a first dimension and plural frequency domain units in a second dimension;
serially multiplexing the control signals other than the ACK/NACK signals and the data signals;
mapping the serially multiplexed signals to the two-dimensional resource region;
mapping said ACK/NACK signals to second specific symbols adjacent to said first specific symbols by overwriting a part of said multiplexed signals mapped to the second specific symbols; and
transmitting the reference signals, ACK/NACK signals, control signals other than ACK/NACK signals, and data signals mapped to the resource region.

US Pat. No. 10,624,081

DECODING CONTROL INFORMATION RECEIVED OVER A CONTROL CHANNEL

Optis Cellular Technology...

1. A method for decoding control information by a User Equipment (UE), the method comprising:monitoring a set of Physical Downlink Control Channel (PDCCH) candidates for control information received from a base station at subframe k, wherein the set of PDCCH candidates to monitor are defined in terms of search spaces, wherein the UE monitors a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs), wherein the CCE is a resource unit comprising a specific number of resource elements and used for transmission of the control information, wherein the UE-specific search space is given based on a modulus operation using a variable of Yk for the subframe k and a variable C for the subframe k, wherein Yk is defined by:
Yk=(A*Yk?1+B)mod D,
wherein the variable C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L), wherein A, B, and D are predetermined constant values predetermined regardless of the aggregation levels (L), and wherein, when k=0, Y?1 is determined based on a UE identifier having 16-bits; and
decoding the control information of the PDCCH.

US Pat. No. 10,623,146

METHOD AND ARRANGEMENTS IN A TELECOMMUNICATION SYSTEM FOR HANDLING STATUS INFORMATION OF DATA UNITS

Optis Cellular Technology...

1. A method in a receiving side of an Acknowledgement Mode (AM) Radio Link Control (RLC) entity for handling status information of RLC Data Protocol Data Units (PDUs) transmitted from a peer AM RLC entity to the AM RLC entity over a radio link, each RLC Data PDU having a respective Sequence Number (SN), the method comprising the following acts:(1) detecting that a number of RLC Data PDUs transmitted by the peer AM RLC entity are lost;
(2) constructing a STATUS PDU to include NACK_SNs for a first part of the missing RLC Data PDUs and omitting NACK_SNs for the rest of the missing RLC Data PDUs;
(3) setting an ACK_SN field of the STATUS PDU to the SN of the next not received RLC Data PDU for which a NACK_SN is omitted from the STATUS PDU;
(4) sending the STATUS PDU from the AM RLC entity to the peer AM RLC entity over the radio link; and
(5) preventing sending of a further STATUS PDU from the AM RLC entity to the peer AM RLC entity over the radio link until after expiration of a predetermined time.

US Pat. No. 10,917,906

METHOD AND APPARATUS FOR DETERMINING ALLOCATION OF COMMUNICATION RESOURCES

Optis Cellular Technology...

1. A method for receiving downlink data using resource blocks at a user equipment (UE) in a wireless mobile communication system, the method comprising: receiving downlink control information including resource allocation information for the downlink data; and receiving the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information, wherein the resource allocation information indicates virtual resource block (VRB) allocations for the user equipment, wherein indexes of the PRBs to which the downlink data are mapped are determined based on a mapping relationship between virtual resource blocks (VRBs) and the PRBs, wherein the mapping relationship is defined based on indexes of the VRBs which are mapped to the indexes of the PRBs for a first slot of a subframe and a second slot of the subframe, and wherein the indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap, wherein the mapping relationship includes a transformation of VRB indexes based on a matrix, wherein a number, R, of rows of the matrix is given as: R=?NDVRB/C?MRBG)?·MRBG where NDVRB is a number of consecutive indexes of VRBs, C is a number of columns in the matrix, and MRBG is a number of consecutive PRBs that constitute a resource block group (RBG).

US Pat. No. 10,757,650

METHOD AND MOBILE TERMINAL FOR PERFORMING RANDOM ACCESS

Optis Cellular Technology...

1. A mobile terminal comprising:communication circuitry; and
processing circuitry is configured to perform a first random access channel (RACH) procedure using the communications circuitry including:
transmitting to a network a first RACH message including a first type of random access preamble selected by the mobile terminal from a set of random access preambles;
receiving a second RACH message including a random access response from the network in response to the first RACH message;
transmitting data to the network using a third RACH message;
starting a contention resolution timer;
monitoring a Physical Downlink Control Channel (PDCCH) for a fourth RACH message;
determining that the first RACH procedure failed when the contention resolution timer expires; and
observing a back-off time period,
wherein the processing circuitry is configured to not monitor the PDCCH during the back-off time period, and
wherein the processing circuitry is configured to perform a second RACH procedure using the communications circuitry after the back-off time period concludes.

US Pat. No. 10,708,030

METHOD OF GENERATING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Optis Cellular Technology...


US Pat. No. 11,032,814

DECODING CONTROL INFORMATION RECEIVED OVER A CONTROL CHANNEL

Optis Cellular Technology...

1. A method for decoding control information by a User Equipment (UE), the method comprising:monitoring a set of Physical Downlink Control Channel (PDCCH) candidates for control information received from a base station at subframe k,
wherein the set of PDCCH candidates to monitor are defined in terms of search spaces,
wherein the UE monitors a UE-specific search space, among the search spaces, at each of aggregation levels (L) of 1, 2, 4 and 8 control channel elements (CCEs),
wherein the CCE is a resource unit comprising a specific number of resource elements and used for transmission of the control information,
wherein the ‘L’ CCEs corresponding to a first PDCCH candidate among the set of PDCCH candidates of the search space at a subframe k are located at positions given by:
L*{(Yk)mod(floor(C))}+i, wherein i=0, . . . ,L?1,
wherein Yk is defined by:
Yk=(A*Yk?1+B)mod D.
wherein the variable C is determined based on the number of CCEs (NCCE) divided by the aggregation level (L),
wherein A, B, and D are predetermined constant values predetermined regardless of the aggregation levels (L); and
decoding the control information of the PDCCH.

US Pat. No. 11,012,222

METHOD FOR TRANSMITTING UPLINK SIGNALS

Optis Cellular Technology...

1. A method for a user equipment (UE) to transmit signals to a base station, the method comprising:multiplexing data and first type control information to output multiplexed signals to be transmitted from the UE;
mapping the multiplexed signals to a two-dimensional matrix comprising plural time domain units in a first dimension and plural frequency domain units in a second dimension, at least one column of the matrix comprising symbols which comprise a reference signal;
mapping second type control information to the matrix to overwrite some of the multiplexed signals mapped to a specific column of the matrix which is adjacent to the at least one column which comprises the reference signal;
wherein, the first type control information not including the second type control information is mapped to extend along specific rows of the matrix; and
transmitting an output sequence of the matrix to the base station.