US Pat. No. 9,596,711

METHOD AND APPARATUS FOR TRANSMITTING MEDIA ACCESS CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

INNOVATIVE TECHNOLOGY LAB...

1. A method of performing a device-to-device communication among user equipment (UE) devices, the method comprising:
receiving, at a first UE, a first message transmitted from a second UE for a device-to-device communication between the first
UE and the second UE, wherein the first message comprises a medium access control (MAC) header and a MAC payload, wherein
the MAC header comprises a first source identification field, a first target identification field, and one or more MAC sub-headers
for the device-to-device communication, wherein the first source identification field and the first target identification
field are followed by the MAC sub-headers;

determining the second UE as a source of the first message by identifying the first source identification field associated
with a source layer-2 identification of the second UE;

determining whether the first message is transmitted for the first UE by identifying the first target identification field
associated with a target layer-2 identification of the first UE; and

retrieving a MAC control element from the MAC payload, the MAC control element corresponding to the MAC control element sub-header
included in the one or more MAC sub-headers,

wherein at least one of the target layer-2 identification of the first UE and the source layer-2 identification of the second
UE is determined from a proximity-based services identification configured for the second UE by a higher layer signaling for
a device-to-device communication,

wherein the first target identification field has a length of 16 bits,
wherein the first target identification field has a value of zero when a transmission type used for a MAC Packet Data Unit
(PDU) is broadcasting, and

wherein the first target identification field has a non-zero 16-bit value when a transmission type used for a MAC PDU is multicasting
or unicasting.

US Pat. No. 9,584,267

METHOD AND APPARATUS OF CONTROLLING DOWNLINK HARQ TIMING

INNOVATIVE TECHNOLOGY LAB...

1. A method of transmitting a Hybrid Automatic Repeat reQuest (HARQ) response from a User Equipment (UE) to a base station,
the method comprising:
establishing a Radio Resource Control (RRC) connection with the base station through a first serving cell, the first serving
cell supporting a Frequency Division Duplex (FDD) mode;

receiving, at the UE, an RRC message through the first serving cell, the RRC message comprising carrier aggregation (CA) configuration
information, the CA configuration information comprising information of a second serving cell supporting a Time Division Duplex
(TDD) mode, and the first serving cell and the second serving cell being aggregated by an FDD-TDD CA scheme;

receiving at least one of a Physical Downlink Control Channel (PDCCH) and an Enhanced PDCCH through the second serving cell;
detecting, based on resource allocation information included in the at least one of the PDCCH and the EPDCCH, a Physical Downlink
Shared Channel (PDSCH) transmitted from the base station through the second serving cell, the PDSCH being received in a subframe
n?4, wherein n?4 is an integer, and the PDSCH comprises Downlink Shared Channel (DL-SCH) transmitted from the base station
to the UE; and

transmitting, from the UE to the base station, an HARQ response responsive to the detected PDSCH through the first serving
cell, the HARQ response being transmitted in a subframe n, wherein n is an integer.

US Pat. No. 9,386,532

METHOD AND APPARATUS FOR PUSCH/PUCCH POWER SCALING CONSIDERING DUAL CONNECTIVITY IN POWER LIMITED STATE

INNOVATIVE TECHNOLOGY LAB...

1. A method of controlling a transmit power by a User Equipment (UE), the UE being capable of configuring dual connectivity,
the method comprising:
establishing a Radio Resource Control (RRC) connection with a Master evolved NodeB (MeNB) through a primary serving cell,
the MeNB being associated with a Master Cell Group (MCG) including one or more serving cells configurable for the UE;

establishing a connection with a Secondary eNB (SeNB), the SeNB being associated with a Secondary Cell Group (SCG) including
one or more serving cells configurable for the UE;

determining to transmit an uplink channel through a serving cell of the MCG and to transmit an uplink channel through a serving
cell of the SCG;

determining whether to control a transmit power reduction for at least one of the uplink channel determined to be transmitted
through the serving cell of the MCG and the uplink channel determined to be transmitted through the serving cell of the SCG;

determining a priority between the uplink channel determined to be transmitted through the serving cell of the MCG and the
uplink channel determined to be transmitted through the serving cell of the SCG, based on Uplink Control Information (UCI)
included in at least one of the uplink channels and based on a type of a cell group;

controlling the transmit power reduction for a lower-prioritized uplink channel from among the uplink channels; and
transmitting, from the UE, the uplink channels through the respective serving cells after the control of the transmit power
reduction.

US Pat. No. 9,420,551

APPARATUS AND METHOD FOR CONTROLLING TRANSMISSION POWER IN WIRELESS COMMUNICATION SYSTEM

INNOVATIVE TECHNOLOGY LAB...

1. A method of controlling transmit power for a device-to-device (D2D) communication between user equipments (UEs), the method
comprising:
determining, by a first UE, to transmit a D2D discovery channel for searching for a peer UE;
determining transmit power of the D2D discovery channel based on a pathloss estimate and a first parameter associated with
a number of physical resource blocks (PRBs) for transmitting the D2D discovery channel;

transmitting, by the first UE, the D2D discovery channel based on the determined transmit power of the D2D discovery channel;
determining transmit power of a D2D data channel based on the pathloss estimate and a second parameter associated with a number
of PRBs for transmitting the D2D data channel; and

transmitting the D2D data channel to the peer UE based on the determined transmit power of the D2D data channel,
wherein the number of PRBs for transmitting the D2D data channel is configured to have various sizes,
wherein the number of PRBs for transmitting the D2D discovery channel is fixed as 2, and
wherein the pathloss estimate is determined based on a link between an evolved NodeB (eNB) and the first UE.

US Pat. No. 9,614,647

METHOD AND APPARATUS OF UPLINK SCHEDULING AND HARQ TIMING

INNOVATIVE TECHNOLOGY LAB...

1. A User Equipment (UE) to transmit an uplink channel, the UE supporting a cross-carrier scheduling between a Frequency Division
Duplex (FDD) cell and a Time Division Duplex (TDD) cell, the UE comprising:
a transmitter;
a receiver to receive cross-carrier scheduling information; and
a processor configured to determine, for the cross-carrier scheduling between the FDD cell and the TDD cell, an uplink (UL)
reference configuration indicating an interval k1 between a UL grant transmission and a Physical Uplink Shared Channel (PUSCH)
transmission and an interval k2 between the PUSCH transmission and a Physical Hybrid Automatic Repeat reQuest Indicator Channel
(PHICH) transmission, wherein a TDD uplink/downlink configuration of the TDD cell is the UL reference configuration when the
FDD cell is a scheduling cell and the TDDcell is a scheduled cell,

wherein the receiver receives a UL grant through the FDD cell, the UL grant being transmitted in a first subframe of the FDD
cell,

wherein the transmitter transmits a PUSCH associated with the UL grant through the TDD cell, the PUSCH being transmitted in
a second subframe of the TDD cell,

wherein the receiver receives a PHICH associated with the PUSCH through the FDD cell, the PHICH being transmitted in a third
subframe of the FDD cell,

wherein the cross-carrier scheduling comprises at least one of a downlink cross-carrier scheduling and an uplink cross-carrier
scheduling,

wherein Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) are transmitted through different
downlink carriers in the downlink cross-carrier scheduling, and

wherein a downlink carrier in which PDCCH having a first UL grant is transmitted is different from a downlink carrier linked
with an uplink carrier in which PUSCH associated with the first UL grant is transmitted.

US Pat. No. 9,538,479

METHOD AND APPARATUS FOR PUSCH/PUCCH POWER SCALING CONSIDERING DUAL CONNECTIVITY IN POWER LIMITED STATE

INNOVATIVE TECHNOLOGY LAB...

1. A User Equipment (UE) to control a transmit power, the UE being capable of configuring dual connectivity, the UE comprising:
a transmitter; and
a processor to establish a Radio Resource Control (RRC) connection with a Master evolved NodeB (MeNB) through a primary serving
cell, and to establish a connection with a Secondary eNB (SeNB), the MeNB being associated with a Master Cell Group (MCG)
including one or more serving cells configurable for the UE, and the SeNB being associated with a Secondary Cell Group (SCG)
including one or more serving cells configurable for the UE,

wherein the processor determines to transmit an uplink channel through a serving cell of the MCG and to transmit an uplink
channel through a serving cell of the SCG,

wherein the processor determines whether to control a transmit power reduction for at least one of the uplink channel determined
to be transmitted through the serving cell of the MCG and the uplink channel determined to be transmitted through the serving
cell of the SCG,

wherein the processor determines a priority between the uplink channel determined to be transmitted through the serving cell
of the MCG and the uplink channel determined to be transmitted through the serving cell of the SCG, based on Uplink Control
Information (UCI) included in at least one of the uplink channels and based on a type of a cell group,

wherein the processor controls the transmit power reduction for a lower-prioritized uplink channel from among the uplink channels,
and

wherein the transmitter transmits the uplink channels through the respective serving cells after the control of the transmit
power reduction.

US Pat. No. 9,503,990

APPARATUS AND METHOD FOR PERFORMING UPLINK POWER CONTROL IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION

INNOVATIVE TECHNOLOGY LAB...

1. A method of controlling transmit power of uplink channels in a wireless communication system, the method comprising:
configuring, for a user equipment (UE), a primary serving cell on which a first uplink control channel is transmitted from
the UE, the first uplink control channel comprising uplink control information of the primary serving cell;

configuring, for the UE, a secondary serving cell on which a second uplink control channel is transmitted from the UE, the
second uplink control channel comprising uplink control information of the secondary serving cell;

configuring a first Transmit Power Control (TPC) command and a second TPC command in a single TPC command group, the first
TPC command being associated with transmit power of the uplink control information of the primary serving cell, the second
TPC command being associated with transmit power of the uplink control information of the secondary serving cell;

scrambling downlink control information based on an identifier associated with a TPC, the downlink control information comprising
the single TPC command group;

transmitting, to the UE, a downlink control channel comprising the scrambled downlink control information.

US Pat. No. 9,788,339

METHOD AND APPARATUS FOR TRANSMISSION/RECEPTION OF D2D SIGNAL

Innovative Technology Lab...

1. A method of a device-to-device (D2D) communication between user equipments (UEs), the method comprising:
receiving, at a transmission (Tx) UE, resource assignment information transmitted from an evolved NodeB (eNB), the resource
assignment information being associated with a D2D discovery signal to be transmitted in a discovery period;

determining, at the Tx UE, that a D2D discovery signal associated with a first discovery type and a D2D discovery signal associated
with a second discovery type are to be transmitted in a first subframe included in the discovery period;

in the first subframe, transmitting the D2D discovery signal associated with the second discovery type and dropping the D2D
discovery signal associated with the first discovery type; and

transmitting the D2D discovery signal associated with the first discovery type in a second subframe in response to determining
that the D2D discovery signal associated with the second discovery type is not scheduled for transmission in the second subframe,
wherein the second subframe is included in the discovery period.

US Pat. No. 9,596,668

METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNAL FOR DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

INNOVATIVE TECHNOLOGY LAB...

1. A method of transceiving a synchronization signal by a user equipment (UE) supporting a device-to-device (D2D) communication
between UEs, the method comprising:
receiving, at a first UE, a synchronization signal transmitted from a synchronization source;
determining a root index based on the received synchronization signal;
determining a synchronization timing reference based on the root index; and
transmitting a synchronization signal for a D2D communication based on the determined synchronization timing reference,
wherein the determining of the synchronization timing reference comprises:
based on the root index, determining a category of the synchronization source;
prioritizing the synchronization source based on determining whether the synchronization source is an evolved NodeB (eNodeB),
a UE synchronized with an eNodeB, or a UE having a synchronization timing reference independent from an eNodeB; and

determining the synchronization timing reference based on the prioritization, and
wherein the transmitting of the synchronization signal for a D2D communication comprises:
generating the synchronization signal for a D2D communication based on a set for in-coverage (D2DSSue_net) when an eNodeB
or a UE synchronized with an eNodeB is selected as a transmission synchronization source for the determined synchronization
timing reference; and

generating the synchronization signal for a D2D communication based on a set for out-of-coverage (D2DSSue_oon) when a UE having
a synchronization timing reference independent from an eNodeB is selected as the transmission synchronization source.

US Pat. No. 9,331,820

METHOD AND APPARATUS OF UPLINK SCHEDULING AND HARQ TIMING

INNOVATIVE TECHNOLOGY LAB...

1. A method for transmitting an uplink channel by a User Equipment (UE), the UE supporting a cross-carrier scheduling between
a Frequency Division Duplex (FDD) cell and a Time Division Duplex (TDD) cell, the method comprising:
receiving cross-carrier scheduling information;
for the cross-carrier scheduling between the FDD cell and the TDD cell, determining an uplink (UL) reference configuration
indicating an interval k1 between a UL grant transmission and a Physical Uplink Shared Channel (PUSCH) transmission and an interval k2 between the PUSCH transmission and a Physical Hybrid Automatic Repeat reQuest Indicator Channel (PHICH) transmission, wherein
a TDD uplink/downlink configuration of the TDD cell is the UL reference configuration when the FDD cell is a scheduling cell
and the TDD cell is a scheduled cell;

receiving a UL grant through the FDD cell, the UL grant being transmitted in a first subframe of the FDD cell;
transmitting, from the UE, a PUSCH associated with the UL grant through the TDD cell, the PUSCH being transmitted in a second
subframe of the TDD cell; and

receiving a PHICH associated with the PUSCH through the FDD cell, the PHICH being transmitted in a third subframe of the FDD
cell,

wherein the cross-carrier scheduling comprises at least one of a downlink cross-carrier scheduling and an uplink cross-carrier
scheduling,

wherein Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) are transmitted through different
downlink carriers in the downlink cross-carrier scheduling, and

wherein a downlink carrier in which the PDCCH having a first UL grant is transmitted is different from a downlink carrier
linked with an uplink carrier in which the PUSCH associated with the first UL grant is transmitted.

US Pat. No. 9,584,293

APPARATUS AND METHOD FOR CANCELLING INTER-CELL INTERFERENCE IN COMMUNICATION SYSTEM

INNOVATIVE TECHNOLOGY LAB...

1. A method of performing a wireless communication in an inter-cell interference environment, the method comprising:
establishing a Radio Resource Control (RRC) connection with a base station through a first serving cell;
receiving, at a User Equipment (UE), an RRC message through the first serving cell, the RRC message comprising cell-specific
reference signal (CRS) information of a neighbor cell and Physical Downlink Shared Channel (PDSCH) information of the neighbor
cell, and the PDSCH information of the neighbor cell comprising a parameter relating to a power ratio of a CRS of the neighbor
cell and a PDSCH of the neighbor cell;

receiving the PDSCH through the first serving cell;
performing a channel estimation for retrieving data from a PDSCH of the first serving cell, the channel estimation comprising:
performing a first channel estimation for the PDSCH of the first serving cell based on a CRS of the first serving cell,
based on interference information of the CRS of the neighbor cell, canceling an interference of the CRS of the neighbor cell
from the first channel estimation, and

based on the parameter relating to the power ratio of the CRS of the neighbor cell and the PDSCH of the neighbor cell, performing
a second channel estimation for the PDSCH of the first serving cell by canceling an interference of the PDSCH of the neighbor
cell; and

retrieving the data from the PDSCH of the first serving cell based on the second channel estimation.

US Pat. No. 9,510,332

METHOD AND APPARATUS OF CONTROLLING PERIODIC CSI REPORTING

INNOVATIVE TECHNOLOGY LAB...


US Pat. No. 9,775,186

APPARATUS AND METHOD FOR TRANSMITTING D2D DATA BASED ON RESOURCE PATTERN

Innovative Technology Lab...

1. A method of transmitting device-to-device (D2D) data using a D2D data transmission resource by a user equipment (UE), the
method comprising:
receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information
comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB);

determining, at the UE, a D2D data transmission resource in each D2D data allocation period, the D2D data transmission resource
comprising a pool of subframes;

selecting D2D data transmission subframes from among the pool of subframes based on a changed pattern, the changed pattern
being derived from a basic pattern; and

transmitting, from the UE to another UE, D2D data based on the selected D2D data transmission subframes,
wherein selecting of the D2D data transmission subframes comprises determining (R modulo X), wherein R corresponds to the
number of subframes in the pool of subframes and X corresponds to a length of the basic pattern, where R and X are natural
numbers,

wherein when the number of subframes in the pool of subframes is greater than a length of the basic pattern, the changed pattern
comprises a first part and a second part, the first part of the changed pattern comprising at least one repetition of the
basic pattern, and

wherein a length of the second part of the changed pattern corresponds to (R modulo X).

US Pat. No. 9,525,523

METHOD AND APPARATUS FOR CONTROLLING TPC COMMAND TIMING CONSIDERING TDD-FDD CARRIER AGGREGATION

INNOVATIVE TECHNOLOGY LAB...

1. A method of receiving a transmit power control (TPC) command in a wireless communication system supporting Time Division
Duplex (TDD)-Frequency Division Duplex (FDD) Carrier Aggregation (CA), the method comprising:
establishing a Radio Resource Control (RRC) connection with a base station through a first serving cell, the first serving
cell supporting a TDD mode;

receiving, at a UE, an RRC message through the first serving cell, the RRC message comprising carrier aggregation (CA) configuration
information, the CA configuration information comprising information of a second serving cell supporting an FDD mode, and
the first serving cell and the second serving cell being aggregated by a TDD-FDD CA scheme;

detecting, at the UE, a Physical Downlink Control Channel (PDCCH) transmitted through the first serving cell, the PDCCH comprising
a Transmit Power Control (TPC) command and being received in a subframe n-4; and

transmitting, from the UE, a Physical Uplink Shared Channel (PUSCH) associated with the TPC command through the second serving
cell, the PUSCH being transmitted in a subframe n.

US Pat. No. 9,439,233

METHOD AND APPARATUS FOR PERFORMING ACTIVATION/DEACTIVATION OF SERVING CELL IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DUAL CONNECTIVITY

INNOVATIVE TECHNOLOGY LAB...

1. A method for controlling activation of a serving cell by a User Equipment (UE) supporting a dual connectivity, the UE communicating
with a first node and a second node for the dual connectivity, the method comprising:
receiving, from the first node, first information including activation/deactivation indicators of secondary serving cells
(SCells) in a first SCell group configured for the UE;

receiving, from the second node, second information including activation/deactivation indicators of SCells in a second SCell
group configured for the UE; and

controlling activation/deactivation states of the SCells in the first SCell group according to the activation/deactivation
indicators of the SCells in the first SCell group identified from the first information received from the first node, and

controlling activation/deactivation states of the SCells in the second SCell group according to the activation/deactivation
indicators of the SCells in the second SCell group identified from the information received from the second node.

US Pat. No. 9,814,002

APPARATUS AND METHOD FOR CONTROLLING TRANSMISSION POWER IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of controlling transmit power for a device-to-device (D2D) communication, the method comprising:
receiving, at a User Equipment (UE), a radio resource control (RRC) message transmitted from an evolved NodeB (eNB), the RRC
message comprising power information for the UE, the power information comprising D2D maximum transmit power for a first D2D
transmission through a first serving cell and maximum transmit power for an uplink transmission to the eNB through a second
serving cell, wherein the uplink transmission to the eNB through the second serving cell comprises a Physical Uplink Shared
Channel (PUSCH) transmission;

determining whether the first D2D transmission through the first serving cell and a second D2D transmission overlap in a subframe
i, wherein the first D2D transmission is prioritized over the second D2D transmission;

determining, based on the priority of the first D2D transmission, the first D2D transmission in the subframe i;
determining whether the first D2D transmission through the first serving cell and the PUSCH transmission to the eNB through
the second serving cell overlap in the subframe i;

based on allocation of transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell in the
subframe i, adjusting transmit power of the first D2D transmission through the first serving cell in the subframe i, wherein
the adjusted transmit power of the first D2D transmission is greater than zero; and

performing the first D2D transmission through the first serving cell and the PUSCH transmission to the eNB through the second
serving cell in the subframe i,

wherein the transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell in the subframe
i is prioritized over the transmit power of the first D2D transmission through the first serving cell in the subframe i.

US Pat. No. 9,461,802

APPARATUS AND METHOD FOR TRANSMITTING HARQ ACK/NACK

INNOVATIVE TECHNOLOGY LAB...

1. A method of communicating control information between a base station and a user equipment (UE), the method comprising:
establishing a Radio Resource Control (RRC) connection with the base station through a first serving cell, the first serving
cell supporting a Time Division Duplex (TDD) mode;

receiving an RRC message from the base station through the first serving cell, the RRC message comprising carrier aggregation
(CA) configuration information, the CA configuration information comprising information of a second serving cell supporting
a Frequency Division Duplex (FDD) mode, and the first serving cell and the second serving cell being aggregated by a TDD-FDD
CA scheme;

checking a 2-bit downlink (DL) downlink assignment index (DAI) field configured in a DL downlink control information (DCI)
format, the DL DCI format indicating a Physical Downlink Shared Channel (PDSCH) transmission on the second serving cell, and
the 2-bit DL DAI field indicating that ten downlink subframes for the second serving cell are associated with a uplink subframe
of the first serving cell;

receiving, at the UE, at least one of a Physical Downlink Control Channel (PDCCH) and an Enhanced PDCCH (EPDCCH), the at least
one of the PDCCH and the EPDCCH comprising the DL DCI format;

receiving, at the UE, data through the first serving cell and the second serving cell;
in response to the received data, generating a Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement/Negative Acknowledgement
(ACK/NACK) signal, the HARQ ACK/NACK signal being indexed based on a value of the 2-bit DL DAI field; and

transmitting the HARQ ACK/NACK signal through the uplink subframe of the first serving cell.

US Pat. No. 9,642,091

METHOD AND APPARATUS FOR PUSCH/PUCCH POWER SCALING CONSIDERING DUAL CONNECTIVITY IN POWER LIMITED STATE

INNOVATIVE TECHNOLOGY LAB...

1. A method of controlling transmit power of an uplink channel to be transmitted from a User Equipment (UE), the UE being
capable of configuring dual connectivity, the method comprising:
establishing, by a Master evolved NodeB (MeNB), a Radio Resource Control (RRC) connection with the UE through a primary serving
cell, the MeNB being associated with a Master Cell Group (MCG) including one or more serving cells configurable for the UE;

establishing, by a Secondary eNB (SeNB), a connection with the UE, the SeNB being associated with a Secondary Cell Group (SCG)
including one or more serving cells configurable for the UE;

transmitting, by the MeNB to the UE, an RRC message through the primary serving cell, the RRC message comprising carrier aggregation
(CA) configuration information, and the CA configuration information comprising information of one or more secondary serving
cells to be aggregated according to a CA configuration, and the one or more serving cells being included in at least one of
the MCG and the SCG;

determining an uplink channel to be received from the UE through a serving cell of the MCG in subframe i, and determining
an uplink channel to be received from the UE through a serving cell of the SCG in the subframe i;

determining an output power threshold in the subframe i, which is associated with a transmit power reduction for at least
one of the uplink channel determined to be received through the serving cell of the MCG and the uplink channel determined
to be received through the serving cell of the SCG in the subframe i; and

receiving the uplink channel from the UE through the serving cell of the MCG in subframe i, and receiving the uplink channel
from the UE through the serving cell of the SCG in subframe i.

US Pat. No. 9,432,147

METHOD AND APPARATUS OF TRANSMITTING CONTROL INFORMATION CONSIDERING TDD-FDD CA

INNOVATIVE TECHNOLOGY LAB...

1. A method of transmitting control information from a base station to a user equipment (UE), the method comprising:
establishing a Radio Resource Control (RRC) connection with the UE through a first serving cell, the first serving cell supporting
a Time Division Duplex (TDD) mode;

transmitting an RRC message to the UE through the first serving cell, the RRC message comprising carrier aggregation (CA)
configuration information, the CA configuration information comprising information of a second serving cell supporting a Frequency
Division Duplex (FDD) mode, and the first serving cell and the second serving cell being aggregated by a TDD-FDD CA scheme;

configuring a downlink (DL) downlink control information (DCI) format for indicating a Physical Downlink Shared Channel (PDSCH)
transmission on the second serving cell, a 4-bit Hybrid Automatic Repeat reQuest (HARQ) process number field and a 2-bit DL
downlink assignment index (DAI) field being configured in the DL DCI format; and

transmitting, to the UE, at least one of a Physical Downlink Control Channel (PDCCH) and an Enhanced PDCCH (EPDCCH), the at
least one of the PDCCH and the EPDCCH comprising the DL DCI format.

US Pat. No. 9,750,016

APPARATUS AND METHOD FOR DETERMINING D2D DATA RESOURCE FOR D2D COMMUNICATION

INNOVATIVE TECHNOLOGY LAB...

1. A method of determining a device-to-device (D2D) data transmission resource for a user equipment (UE), the method comprising:
receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information
comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB);

determining, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a
D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit corresponding
to bit value “1”; and

determining a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the duration
associated with the D2D data transmission resource bitmap comprising the pool of subframes, the pool of subframes corresponding
to D2D data transmission resources through which a D2D data transmission is capable,

wherein a plurality of repetitions of the D2D data transmission resource bitmap correspond to uplink subframes in the duration
associated with the D2D data transmission resource bitmap.

US Pat. No. 9,806,872

APPARATUS AND METHOD FOR CANCELLING INTER-CELL INTERFERENCE IN COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A User Equipment (UE) to perform a wireless communication in an inter-cell interference environment, the UE comprising:
a processor to establish a Radio Resource Control (RRC) connection with a base station through a first serving cell, and to
perform a channel estimation for retrieving data from a Physical Downlink Shared Channel (PDSCH) of the first serving cell;
and

a receiver to receive an RRC message through the first serving cell, the RRC message comprising cell-specific reference signal
(CRS) information of a neighbor cell and PDSCH information of the neighbor cell, and the PDSCH information of the neighbor
cell comprising a parameter relating to a power ratio of a CRS of the neighbor cell and a PDSCH of the neighbor cell, and
to receive the PDSCH through the first serving cell,

wherein the channel estimation comprises:
performing a first channel estimation for the PDSCH of the first serving cell based on a CRS of the first serving cell,
based on interference information of the CRS of the neighbor cell, canceling an interference of the CRS of the neighbor cell
from the first channel estimation, and

based on the parameter relating to the power ratio of the CRS of the neighbor cell and the PDSCH of the neighbor cell, performing
a second channel estimation for the PDSCH of the first serving cell by canceling an interference of the PDSCH of the neighbor
cell; and

wherein the processor retrieves the data from the PDSCH of the first serving cell based on the second channel estimation.

US Pat. No. 9,814,045

METHOD AND APPARATUS FOR TRANSMITTING BUFFER STATUS REPORT IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A method of supporting a device-to-device (D2D) communication, the method comprising:
establishing a radio resource control (RRC) connection with an evolved NodeB (eNB);
receiving, by a user equipment (UE), configuration information associated with a D2D communication from the eNB, the configuration
information comprising information of a resource selection mode for a D2D data transmission, the information of a resource
selection mode indicating a resource pool from which the UE selects a resource for a D2D data transmission to another UE;

identifying, based on a D2D discovery procedure, D2D target identities of a plurality of target UEs;
mapping a D2D target identity of a first target UE, among the plurality of target UEs, to a first group identity, and mapping
a D2D target identity of a second target UE, among the plurality of target UEs, to a second group identity;

generating an RRC message to be transmitted to the eNB, the RRC message comprising information of the D2D target identity
of the first target UE and information of the D2D target identity of the second target UE;

transmitting the RRC message to the eNB;
generating a MAC-laver message to be transmitted to the eNB, the MAC-layer message comprising a first field that indicates
mapping information between the first group identity and the D2D target identity of the first UE and a second field that indicates
mapping information between the second group identity and the D2D target identity of the second UE; and

transmitting the MAC-layer message to the eNB.

US Pat. No. 10,091,801

METHOD AND APPARATUS FOR TRANSMISSION/RECEPTION OF D2D SIGNAL

Innovative Technology Lab...

1. A transmission (Tx) user equipment (UE) to execute a device-to-device (D2D) communication with a reception (Rx) UE, the Tx UE comprising:a wireless transceiver configured to:
receive resource assignment information transmitted from an evolved NodeB (eNB), the resource assignment information being associated with a D2D discovery signal to be transmitted in a discovery period; and
transmit a D2D discovery signal to a Rx UE; and
one or more processors configured to:
determine that a D2D discovery signal associated with a first discovery type and a D2D discovery signal associated with a second discovery type are to be transmitted in a first subframe included in the discovery period; and
in the first subframe, transmit the D2D discovery signal associated with the second discovery type and drop the D2D discovery signal associated with the first discovery type,
wherein the one or more processor is configured to drop a D2D control signal transmission in response to determining that a D2D discovery signal and the D2D control signal are to be transmitted in a second subframe, and
wherein in the second subframe, the wireless transceiver is configured to transmit the D2D discovery signal without transmitting the D2D control signal, wherein the second subframe is included in the discovery period.

US Pat. No. 9,756,588

METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNAL FOR DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

INNOVATIVE TECHNOLOGY LAB...

1. A first user equipment (UE) to transceive a synchronization signal, the first UE supporting a device-to-device (D2D) communication
between UEs, the first UE comprising:
a receiver to receive a synchronization signal transmitted from a synchronization source;
a processor to determine a root index based on the received synchronization signal, and to determine a synchronization timing
reference based on the root index; and

a transmitter to transmit a synchronization signal for a D2D communication based on the determined synchronization timing
reference,

wherein for the determining of the synchronization timing reference, the processor:
based on the root index, determines a category of the synchronization source,
prioritizes the synchronization source based on determining whether the synchronization source is an evolved NodeB (eNodeB),
a UE synchronized with an eNodeB, or a UE having a synchronization timing reference independent from an eNodeB, and

determines the synchronization timing reference based on the prioritization; and
wherein for the transmitting of the synchronization signal for a D2D communication, the processor:
generates the synchronization signal for a D2D communication based on a set for in-coverage (D2DSSue_net) when an eNodeB or
a UE synchronized with an eNodeB is selected as a transmission synchronization source for the determined synchronization timing
reference, and

generates the synchronization signal for a D2D communication based on a set for out-of-coverage (D2DSSue_oon) when a UE having
a synchronization timing reference independent from an eNodeB is selected as the transmission synchronization source.

US Pat. No. 9,992,754

METHOD AND APPARATUS FOR CONTROLLING TPC COMMAND TIMING CONSIDERING TDD-FDD CARRIER AGGREGATION

Innovative Technology Lab...

1. A User Equipment (UE) to receive a transmit power control (TPC) command in a wireless communication system supporting Time Division Duplex (TDD)-Frequency Division Duplex (FDD) Carrier Aggregation (CA), the UE comprising:a processor to control a Radio Resource Control (RRC) connection with a base station through a first serving cell supporting a TDD mode, and to detect a Physical Downlink Control Channel (PDCCH) transmitted through the first serving cell, the PDCCH comprising a Transmit Power Control (TPC) command and being received in a subframe n?4;
a receiver to receive an RRC message through the first serving cell, the RRC message comprising carrier aggregation (CA) configuration information, the CA configuration information comprising information of a second serving cell supporting an FDD mode, and the first serving cell and the second serving cell being aggregated by a TDD-FDD CA scheme; and
a transmitter to transmit, from the UE, a Physical Uplink Shared Channel (PUSCH) associated with the TPC command through the second serving cell, the PUSCH being transmitted in a subframe n.

US Pat. No. 10,039,101

APPARATUS AND METHOD FOR DETERMINING D2D DATA RESOURCE FOR D2D COMMUNICATION

Innovative Technology Lab...

1. A method of determining a device-to-device (D2D) data transmission resource for a user equipment (UE), the method comprising:receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB);
determining, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit corresponding to bit value “1”; and
determining a pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap, the duration associated with the D2D data transmission resource bitmap comprising the pool of subframes, the pool of subframes corresponding to D2D data transmission resources through which a D2D data transmission is capable,
wherein a plurality of repetitions of the D2D data transmission resource bitmap are associated with the duration associated with the D2D data transmission resource bitmap, and
wherein the pool of subframes corresponding to the bit value “1” of the D2D data transmission resource bitmap has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap in accordance with the plurality of repetitions of the D2D data transmission resource bitmap.

US Pat. No. 10,009,950

APPARATUS AND METHOD FOR TRANSMITTING D2D DATA BASED ON RESOURCE PATTERN

Innovative Technology Lab...

1. A user equipment (UE) to transmit device-to-device (D2D) data using a D2D data transmission resource, comprising:a wireless transceiver configured to:
receive configuration information associated with a D2D data transmission resource, the configuration information comprising information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB); and
one or more processors configured to:
determine a D2D data transmission resource in each D2D data allocation period, the D2D data transmission resource comprising a pool of subframes; and
select D2D data transmission subframes from among the pool of subframes based on a changed pattern, the changed pattern being derived from a basic pattern,
wherein the wireless transceiver transmits, from the UE to another UE, D2D data based on the selected D2D data transmission subframes,
wherein selecting of the D2D data transmission subframes comprises:
the one or more processors is configured to determine, based on whether the number of subframes in the pool of subframes is less than a length of the basic pattern, the changed pattern based on a value of (R modulo X), wherein R corresponds to the number of subframes in the pool of subframes and X corresponds to the length of the basic pattern, where R and X are natural numbers,
wherein a length of the changed pattern corresponds to the number of subframes in the pool of subframes.

US Pat. No. 10,143,017

METHOD AND APPARATUS FOR OPERATING BUFFER STATE REPORT IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A method of supporting a buffer status report (BSR) associated with a device-to-device (D2D) communication, the method comprising: establishing a radio resource control (RRC) connection with an evolved NodeB (eNB) and receiving configuration information associated with a D2D communication from the eNB, the configuration information comprising information of a resource allocation mode for a D2D data transmission and information of a timer associated with a BSR for a D2D data transmission; determining, by a user equipment (UE), a radio link failure (RLF), the RLF being associated with a connection problem of the RRC connection; initializing a re-establishment process for the RRC connection; canceling all BSRs for a D2D data transmission in response to the determined RLF, the canceled BSRs for a D2D data transmission being associated with a D2D data transmission scheduled by the eNB; initializing the timer associated with a BSR for a D2D data transmission; determining, by the UE, a change from the resource allocation mode for a D2D data transmission to a resource selection mode when an exceptional case occurs; and in the resource selection mode, selecting, by the UE, a resource for transmitting D2D data from a resource pool, wherein the exceptional case comprises: a case where upon detecting the RLF, the initialization of the re-establishment process for the RRC connection has been initiated and a T311 timer associated with the re-establishment process for the RRC connection has been started, receiving information of CommTxPoolExceptional for a D2D data transmission for the exceptional case, wherein the CommTxPoolExceptional is information of a resource pool for a D2D data transmission when the exceptional case occurs.

US Pat. No. 10,111,223

METHOD AND APPARATUS OF UPLINK SCHEDULING AND HARQ TIMING

Innovative Technology Lab...

1. A method for transmitting an uplink channel by a User Equipment (UE), the UE supporting a cross-carrier scheduling between a Frequency Division Duplex (FDD) cell and a Time Division Duplex (TDD) cell, the method comprising:configuring the TDD cell as a scheduled cell scheduled by the FDD cell; and
when a TDD uplink/downlink configuration of the TDD cell is zero and the TDD cell is a scheduled cell scheduled by the FDD cell:
receiving an uplink (UL) grant via a subframe n of the FDD cell;
transmitting, from the UE and via a subframe (n+k1) of the TDD cell, a Physical Uplink Shared Channel (PUSCH) associated with the UL grant, wherein k1 is determined to be 4 based on determining that n is 0 or 5, or k1 is determined to be 6 based on determining that n is 1 or 6; and
receiving, via a subframe i of the FDD cell, a Physical Hybrid Automatic Repeat reQuest Indicator Channel (PHICH), the PHICH being associated with a PUSCH transmitted via a subframe (i?k2) of the TDD cell, wherein k2 is determined to be 7 based on determining that (i?k2) is 3 or 8, or k2 is determined to be 4 based on determining that (i?k2) is 2 or 7,
wherein the cross-carrier scheduling comprises at least one of a downlink cross-carrier scheduling and an uplink cross-carrier scheduling,
wherein Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) are transmitted through different downlink carriers in the downlink cross-carrier scheduling, and
wherein a downlink carrier in which the PDCCH having a first UL grant is transmitted is different from a downlink carrier linked with an uplink carrier in which the PUSCH associated with the first UL grant is transmitted.

US Pat. No. 10,045,325

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of processing a positioning reference signal, the method comprising:receiving, by a narrow-band (NB) user equipment (UE), NB positioning reference signal (PRS) configuration information configured for the NB UE, the NB PRS configuration information comprising:
an NB PRS bitmap indicating a pattern selecting NB PRS subframes, wherein each NB PRS subframe comprises an NB PRS for positioning the NB UE;
determining, by the NB UE and based on the NB PRS bitmap, a first NB PRS mapped in NB PRS subframes of an NB PRS reference cell;
determining, by the NB UE and based on the NB PRS bitmap, a second NB PRS mapped in NB PRS subframes of an NB PRS neighbor cell;
generating, based on the first NB PRS and the second NB PRS, a reference signal time difference (RSTD) measurement; and
transmitting, by the NB UE, the RSTD measurement.

US Pat. No. 9,918,279

METHOD AND APPARATUS FOR PUSCH/PUCCH POWER SCALING CONSIDERING DUAL CONNECTIVITY IN POWER LIMITED STATE

INNOVATIVE TECHNOLOGY LAB...

1. A system to control transmit power of an uplink channel to be transmitted from a User Equipment (UE), the UE being capable
of configuring dual connectivity, the system comprising:
a Master evolved NodeB (MeNB) to establish a Radio Resource Control (RRC) connection with the UE through a primary serving
cell, the MeNB being associated with a Master Cell Group (MCG) including one or more serving cells configurable for the UE;
and

a Secondary eNB (SeNB) to establish a connection with the UE, the SeNB being associated with a Secondary Cell Group (SCG)
including one or more serving cells configurable for the UE,

wherein: the MeNB is configured to transmit, to the UE, an RRC message through the primary serving cell, the RRC message comprising
carrier aggregation (CA) configuration information, and the CA configuration information comprising information of one or
more secondary serving cells to be aggregated according to a CA configuration, and the one or more serving cells being included
in at least one of the MCG and the SCG;

the MeNB is configured to determine an uplink channel to be received from the UE through a serving cell of the MCG in subframe
i, and the SeNB is configured to determine an uplink channel to be received from the UE through a serving cell of the SCG
in the subframe i;

the MeNB is configured to determine an output power threshold in the subframe which is associated with a transmit power reduction
for at least one of the uplink channel determined to be received through the serving cell of the MCG and the uplink channel
determined to be received through the serving cell of the SCG in the subframe i;

the MeNB is configured to receive the uplink channel from the UE through the serving cell of the MCG in subframe i; and
the SeNB is configured to receive the uplink channel from the UE through the serving cell of the SCG in subframe i.

US Pat. No. 10,117,284

METHOD AND APPARATUS FOR TRANSMITTING MEDIA ACCESS CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A first user equipment (UE) to perform a device-to-device communication with a second UE, the first UE comprising:a receiver to receive a first message transmitted from the second UE for a device-to-device communication between the first UE and the second UE, wherein the first message comprises a medium access control (MAC) header and a MAC payload, wherein the MAC header comprises a first source identification field, a first target identification field, and one or more MAC sub-headers for the device-to-device communication, wherein the first source identification field and the first target identification field are followed by the one or more MAC sub-headers; and
a processor to determine the second UE as a source of the first message by identifying the first source identification field associated with a source layer-2 identification of the second UE, to determine whether the first message is transmitted for the first UE by identifying the first target identification field associated with a target layer-2 identification of the first UE, and to retrieve a MAC control element from the MAC payload, the MAC control element corresponding to a MAC control element sub-header included in the one or more MAC sub-headers,
wherein at least one of the target layer-2 identification of the first UE and the source layer-2 identification of the second UE is determined from a proximity-based services identification configured for the second UE by a higher layer signaling for a device-to-device communication,
wherein the first target identification field has a length of 16 bits,
wherein the first target identification field has a value of zero when a transmission type used for a MAC Packet Data Unit (PDU) is broadcasting, and
wherein the first target identification field has a non-zero 16-bit value when a transmission type used for a MAC PDU is multicasting or unicasting.

US Pat. No. 10,057,900

METHOD AND APPARATUS FOR CONFIGURING DM-RS FOR V2X

Innovative Technology Lab...

1. A method for transmitting Demodulation-Reference Signal (DM-RS) configured for Vehicle-to-everything (V2X) communication, the method comprising:determining, based on a first group-hopping associated with a first slot of a subframe, a first DM-RS for V2X communication, and generating, based on a second group-hopping associated with the first slot and with an offset, a second DM-RS for V2X communication, wherein the first group-hopping and the second group-hopping apply different inputs in a pseudo-random sequence;
mapping the first DM-RS for V2X communication in a first symbol in the first slot of the subframe, and mapping the second DM-RS for V2X communication in a second symbol in the first slot of the subframe;
determining, based on a third group-hopping associated with a second slot of the subframe, a third DM-RS for V2X communication, and generating, based on a fourth group-hopping associated with the second slot and with an offset, a fourth DM-RS for V2X communication, wherein the third group-hopping and the fourth group-hopping apply different inputs in the pseudo-random sequence;
mapping the third DM-RS for V2X communication in a first symbol in the second slot of the subframe, and mapping the fourth DM-RS for V2X communication in a second symbol in the second slot of the subframe; and
transmitting the mapped first DM-RS for V2X communication, the mapped second DM-RS for V2X communication, the mapped third DM-RS for V2X communication, and the mapped fourth DM-RS for V2X communication.

US Pat. No. 10,085,236

APPARATUS AND METHOD FOR TRANSMITTING DATA THROUGH DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A method of transmitting data through a device-to-device (D2D) communication between user equipments (UEs), the method comprising:generating, at a first UE, first D2D data, the first D2D data corresponding to a transport block (TB) unit;
determining a D2D resource pool comprising D2D communication resources selected from a plurality of subframes, the selected D2D communication resources being assigned for a D2D communication and comprising a sequence of D2D subframes;
determining, based on a length of the D2D resource pool, a resource pattern for transmission (RPT) comprising a plurality of repeated sub-RPTs;
determining, based on the RPT and from the sequence of D2D subframes, a plurality of D2D subframes for a D2D data transmission, wherein the repeated sub-RPTs each selects two or more D2D subframes and excludes two or more D2D subframes according to a same pattern; and
transmitting, from the first UE to a second UE, the first D2D data through a plurality of the selected D2D subframes,
wherein a first one of the repeated sub-RPTs precedes a second one of the repeated sub-RPTs in the RPT, and
wherein D2D subframes selected based on the first one of the sub-RPTs precede D2D subframes selected based on the second one of the sub-RPTs in a time axis.

US Pat. No. 10,257,878

METHOD AND APPARATUS FOR OPERATING BUFFER STATE REPORT IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A method of supporting a buffer status report (BSR) associated with a device-to-device (D2D) communication, the method comprising: establishing a radio resource control (RRC) connection with an evolved NodeB (eNB) and receiving configuration information associated with a D2D communication from the eNB, the configuration information comprising information of a resource allocation mode for a D2D data transmission and information of a timer associated with a BSR for a D2D data transmission; determining, by a user equipment (UE), a radio link failure (RLF), the RLF being associated with a connection problem of the RRC connection; initializing a re-establishment process for the RRC connection; canceling all BSRs for a D2D data transmission in response to the determined RLF, the canceled BSRs for a D2D data transmission being associated with a D2D data transmission scheduled by the eNB; initializing the timer associated with a BSR for a D2D data transmission; determining, by the UE, a change from the resource allocation mode for a D2D data transmission to a resource selection mode when an exceptional case occurs; and in the resource selection mode, selecting, by the UE, a resource for transmitting D2D data from a resource pool, wherein the exceptional case comprises: a case where upon detecting the RLF, the initialization of the re-establishment process for the RRC connection has been initiated and a T311 timer associated with the re-establishment process for the RRC connection has been started, receiving information of CommTxPoolExceptional for a D2D data transmission for the exceptional case, wherein the CommTxPoolExceptional is information of a resource pool for a D2D data transmission when the exceptional case occurs.

US Pat. No. 10,136,400

APPARATUS AND METHOD FOR CONTROLLING TRANSMISSION POWER IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of controlling transmit power for a direct communication between two mobile devices, the method comprising:receiving, by a first mobile device, a radio resource control (RRC) message transmitted from an evolved NodeB (eNB), the RRC message comprising maximum transmit power for a first direct transmission to a second mobile device through a first serving cell resource;
determining whether the first direct transmission through the first serving cell resource and a Physical Uplink Shared Channel (PUSCH) transmission to the eNB through a second serving cell resource overlap in a subframe i;
based on allocation of transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell resource in the subframe i, adjusting transmit power of the first direct transmission through the first serving cell resource in the subframe i, wherein the adjusted transmit power of the first direct transmission is greater than zero; and
performing the first direct transmission through the first serving cell resource and the PUSCH transmission to the eNB through the second serving cell resource in the subframe wherein the transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell resource in the subframe i is prioritized over the transmit power of the first direct transmission through the first serving cell resource in the subframe i.

US Pat. No. 10,182,467

APPARATUS AND METHOD FOR TRANSMITTING UPLINK CONTROL INFORMATION THROUGH A PHYSICAL UPLINK CONTROL CHANNEL

Innovative Technology Lab...

1. A method for transmitting uplink control information through a Physical Uplink Control Channel (PUCCH) by a User Equipment (UE), the method comprising:configuring serving cells for the UE, the serving cells comprising at least six serving cells configurable for the UE;
receiving PUCCH format configuration information for transmitting uplink control information associated with the configured serving cells, the PUCCH format configuration information comprising configuration information of PUCCH format 4 indicated by a Radio Resource Control (RRC) message;
determining a total number of Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) bits, scheduling request (SR) bits, and periodic Channel State Information (CSI) bits to be transmitted in a subframe;
selecting, at least based on the determined total number, a PUCCH format to transmit at least one of HARQ-ACK, SR, and periodic CSI in the subframe, the selected PUCCH format being one of PUCCH formats comprising the PUCCH format 4 and PUCCH format 3, wherein the selecting the PUCCH format comprises:
determining that simultaneousAckNackAndCQI-Format4-r13 is set true and determining that the total number of HARQ-ACK bits, SR bits, and periodic CSI bits to be transmitted in the subframe is less than or equal to a threshold value; and
determining to use the PUCCH format 4 without dropping the periodic CSI; and
transmitting the uplink control information associated with the configured serving cells in the subframe using the selected PUCCH format, the uplink control information associated with the configured serving cells comprising the at least one of HARQ-ACK, SR, and periodic CSI,
wherein selecting of the PUCCH format comprises:
determining whether the total number of HARQ-ACK bits, SR bits, and periodic CSI bits to be transmitted in a subframe is greater than 22; and
selecting the PUCCH format 4 when the determined total number is greater than 22.

US Pat. No. 9,980,245

METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNAL FOR DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of transceiving a synchronization signal between wireless communication devices, the method comprising:receiving, at a first wireless communication device, a synchronization signal transmitted from a synchronization source;
determining a root index based on the received synchronization signal;
determining a synchronization timing reference based on the root index; and
transmitting, based on the determined synchronization timing reference, a synchronization signal for a direct communication between the first wireless communication device and a second wireless communication device,
wherein the determining of the synchronization timing reference comprises:
based on the root index, determining a category of the synchronization source;
prioritizing the synchronization source based on determining whether the synchronization source is an evolved NodeB (eNodeB), a wireless communication device synchronized with an eNodeB, or a wireless communication device having a synchronization timing reference independent from an eNodeB;
determining whether the synchronization source is a wireless communication device located in a coverage of an eNodeB or a wireless communication device located out of a coverage of an eNodeB, among wireless communication devices synchronized with an eNodeB;
prioritizing the synchronization source further based on determining whether the synchronization source is a wireless communication device located in a coverage of an eNodeB or a wireless communication device located out of a coverage of an eNodeB; and
determining the synchronization timing reference based on the prioritization.

US Pat. No. 10,231,237

METHOD AND APPARATUS FOR WIRELESS COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of transmitting uplink data, the method comprising:establishing connections with a first serving cell and a second serving cell;
determining, by a user equipment (UE), a time period for a device-to-device (D2D) discovery signal communication via the second serving cell;
receiving, by the UE and via the first serving cell, an uplink grant in subframe n;
determining, by the UE and based on the uplink grant received via the first serving cell, a first subframe associated with an uplink signal to an evolved NodeB (eNB) associated with the first serving cell;
in response to determining that the first subframe overlaps in time with the time period, refraining from transmitting the uplink signal in the first subframe, and transmitting, based on a retransmission timing, the uplink signal; and
transmitting, based on a reception timing of the uplink grant and based on a non-adaptive retransmission, the uplink signal in subframe n+12,
wherein the first subframe corresponds to subframe n+4.

US Pat. No. 10,285,142

APPARATUS AND METHOD FOR CONFIGURING SYNCHRONIZATION SIGNAL FOR D2D COMMUNICATION

Innovative Technology Lab...

1. A method of transceiving a synchronization signal by a user equipment (UE) supporting a device-to-device (D2D) communication between UEs, the method comprising:receiving, at a first UE, a D2D synchronization signal transmitted from a second UE, the D2D synchronization signal comprising a primary D2D synchronization signal (PD2DSS) and a secondary D2D synchronization signal (SD2DSS);
determining, based on the received PD2DSS, a root index used for the received PD2DSS, wherein the root index used for the received PD2DSS has one of two integer values X and Y, and wherein each of the integer value X and integer value Y is not an element of a set {25, 29, 34};
determining, based on the root index integer value X or Y, a type of a synchronization source;
determining the SD2DSS mapped in two Single Carrier-Frequency Division Multiplexing (SC-FDM) symbols in a same subframe; and
configuring one of two different modes, based on determining whether a first m-sequence of the SD2DSS is mapped to first sub-carriers of the two SC-FDM symbols or mapped to second sub-carriers of the two SC-FDM symbols,
wherein indexes of the first sub-carriers are even numbers and indexes of the second sub-carriers are odd numbers.

US Pat. No. 10,397,925

METHOD AND APPARATUS FOR TRANSMITTING BUFFER STATUS REPORT IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A method of supporting a direct communication between mobile devices, the method comprising:receiving, by a first mobile device and from an evolved NodeB (eNB), configuration information associated with a direct data transmission to one or more mobile devices, the configuration information comprising information of a resource selection mode for a direct data transmission, the information of a resource selection mode indicating a resource pool from which the first mobile device selects a resource for a direct data transmission to a second mobile device;
identifying, based on a discovery procedure, target identities of a plurality of target mobile devices including the second mobile device;
mapping a target identity of the second mobile device, among the plurality of target mobile devices, to a first group identity, and mapping a target identity of a third mobile device, among the plurality of target mobile devices, to a second group identity;
generating a radio resource control (RRC) message to be transmitted to the eNB, the RRC message comprising information of the target identity of the second mobile device and information of the target identity of the third mobile device;
transmitting the RRC message to the eNB;
generating a MAC-layer message to be transmitted to the eNB, the MAC-layer message comprising a first field that indicates mapping information between the first group identity and the target identity of the second mobile device and a second field that indicates mapping information between the second group identity and the target identity of the third mobile device; and
transmitting the MAC-layer message to the eNB.

US Pat. No. 10,178,539

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of performing a random access procedure during a device-to-device (D2D) discovery period, the method comprising:receiving, by a user equipment (UE) and through Radio Resource Control (RRC) signaling, information of a resource pool for a D2D communication, wherein the information of the resource pool comprises information of a discovery subframe in which a D2D discovery signal is to be communicated;
determining that in the discovery subframe, the D2D discovery signal is prioritized over a communication with an evolved NodeB (eNB) unless the communication with the eNB is associated with a random access (RA) procedure;
transmitting a RA preamble through a Physical Random Access Channel (PRACH);
determining whether the discovery subframe corresponds to a RA subframe in which a RA response for the UE is to be monitored; and
in response to determining that the discovery subframe corresponds to the RA subframe, monitoring, by the UE, the RA response during the discovery subframe.

US Pat. No. 10,383,117

METHOD AND APPARATUS FOR DETERMINING RESOURCE POOL

INNOVATIVE TECHNOLOGY LAB...

1. A method of determining a resource pool for a sidelink transmission, the method comprising:receiving, at a mobile device and from an evolved NodeB (eNB), resource pool configuration information, the resource pool configuration information comprising a bitmap to determine the resource pool;
determining, for a period having a plurality of consecutive subframes, a first subset of subframes by excluding, from the plurality of consecutive subframes:
subframes in which a sidelink synchronization signal (SLSS) resource is configured; and
subframes other than uplink subframes;
determining, for the period, a second subset of subframes by excluding, from the first subset of subframes, one or more subframes, wherein a quantity of the second subset of subframes corresponds to an integer multiple of a length of the bitmap; and
determining, based on a plurality of repetitions of the bitmap, the resource pool for a sidelink transmission from the second subset of subframes.

US Pat. No. 10,256,957

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL

Innovative Technology Lab...

1. A method of processing a positioning reference signal, the method comprising:receiving, by a narrow-band (NB) user equipment (UE), positioning reference signal (PRS) configuration information;
determining, by the NB UE, narrowband PRS (NB PRS) configuration information for the NB UE, the NB PRS configuration information comprising information of an NB PRS reference cell that generates an NB PRS for the NB UE;
determining, by the NB UE, PRS configuration information for a UE, the UE being assigned to use a frequency band unavailable for the NB UE, and the PRS configuration information comprising information of a PRS reference cell that generates a PRS for the UE;
generating, based on the NB PRS configuration information and the PRS configuration information, a reference signal time difference (RSTD) measurement; and
transmitting, by the NB UE, the RSTD measurement.

US Pat. No. 10,420,060

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A narrow-band (NB) user equipment (UE) comprising:a transceiver to receive NB positioning reference signal (PRS) configuration information configured for the NB UE, the NB PRS configuration information comprising:
an NB PRS bitmap indicating a pattern selecting NB PRS subframes, wherein each NB PRS subframe comprises an NB PRS for positioning the NB UE; and
a processor to determine, based on the NB PRS bitmap, a first NB PRS mapped in NB PRS subframes of an NB PRS reference cell, to determine, based on the NB PRS bitmap, a second NB PRS mapped in NB PRS subframes of an NB PRS neighbor cell, and to generate, based on the first NB PRS and the second NB PRS, a reference signal time difference (RSTD) measurement,
wherein the transceiver transmits the RSTD measurement.

US Pat. No. 10,454,624

METHOD AND APPARATUS FOR HARQ OPERATION-SUPPORTING UPLINK DATA TRANSMISSION IN A SPECIAL SUBFRAME IN A WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method of transmitting a Physical Uplink Shared Channel (PUSCH) in a special subframe by a User Equipment (UE), the method comprising:receiving an Uplink (UL) grant from a base station, the UL grant being included in a downlink time period of Time Division Duplex (TDD) cell, and the TDD cell having TDD UL/DL configuration 1, 2 or 6;
determining a resource in an Uplink Pilot Time Slot (UpPTS) of a special subframe of the TDD cell to transmit a PUSCH associated with the received UL grant, wherein the special subframe, having subframe number 1 or 6, consists of a Downlink Pilot Time Slot (DwPTS), a guard period (GP), and the UpPTS;
transmitting, from the UE, the PUSCH mapped to the resource in the UpPTS;
receiving a Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) responsive to the PUSCH; and
when the TDD cell is configured to have TDD UL/DL configuration 6, performing, by the UE, a process comprising:
receiving a UL index field associated with the UL grant from the base station; and
in response to receiving the UL grant in subframe n and determining that least significant bit (LSB) of the UL index field is 1, determining to transmit the PUSCH in special subframe n+6, where n is 0 or 5.

US Pat. No. 10,341,975

METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNAL FOR DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A first wireless communication device comprising:a receiver to receive a synchronization signal transmitted from a synchronization source;
a processor to determine a root index based on the received synchronization signal, and to determine a synchronization timing reference based on the root index; and
a transmitter to transmit, based on the determined synchronization timing reference, a synchronization signal for a direct communication between the first wireless communication device and a second wireless communication device,
wherein determining, by the processor, the synchronization timing reference comprises:
based on the root index, determining a category of the synchronization source;
prioritizing the synchronization source based on determining whether the synchronization source is an evolved NodeB (eNodeB), a wireless communication device synchronized with an eNodeB, or a wireless communication device having a synchronization timing reference independent from an eNodeB;
determining whether the synchronization source is a wireless communication device located in a coverage of an eNodeB or a wireless communication device located out of a coverage of an eNodeB, among wireless communication devices synchronized with an eNodeB;
prioritizing the synchronization source further based on determining whether the synchronization source is a wireless communication device located in a coverage of an eNodeB or a wireless communication device located out of a coverage of an eNodeB; and
determining the synchronization timing reference based on the prioritization.

US Pat. No. 10,404,438

APPARATUS AND METHOD FOR PERFORMING HYBRID AUTOMATIC REPEAT REQUEST OPERATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION

Innovative Technology Lab...

1. A method comprising:receiving, by a user equipment (UE), from a first serving cell, and via a first Physical Downlink Control Channel (PDCCH) in a first subframe, a first downlink grant comprising a first accumulated downlink assignment indicator (A-DAI) field and a first total DAI (T-DAI) field;
receiving, by the UE, from a second serving cell, and via a second PDCCH in the first subframe, a second downlink grant comprising a second A-DAI field and a second T-DAI field;
determining a value of the first A-DAI field and a value of the first T-DAI field, wherein the value of the first T-DAI field indicates an integer T1, wherein the value of the first A-DAI field indicates an integer A smaller than or equal to the integer T1, and wherein the value of the first T-DAI field is mapped to a set including a plurality of T-DAI values;
determining a value of the second A-DAI field and a value of the second T-DAI field, wherein the value of the second T-DAI field indicates the integer T1, and wherein the value of the second A-DAI field indicates an integer B smaller than or equal to the integer T1;
receiving a first PDSCH indicated by the first PDCCH and receiving a second PDSCH indicated by the second PDCCH;
determining that the integer B is the highest value among values indicated by A-DAI field values determined from PDCCHs received in the first subframe;
determining one of the plurality of T-DAI values, which is the closest integer to the integer B;
receiving an uplink grant indicating a transmission of a Physical Uplink Shared Channel (PUSCH);
determining a size of a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook to which an HARQ-ACK associated with the first PDSCH and an HARQ-ACK associated with the second PDSCH are to be mapped, wherein the size of the HARQ-ACK codebook is determined based on the determined one of the plurality of T-DAI values; and
transmitting, via the PUSCH, the HARQ-ACK associated with the first PDSCH and the HARQ-ACK associated with the second PDSCH.

US Pat. No. 10,374,755

METHOD AND APPARATUS OF SCHEDULING FOR DEVICE TO DEVICE (D2D) COMMUNICATION

Innovative Technology Lab...

14. An evolved NodeB (eNB) to support a device-to-device (D2D) communication between user equipments (UEs), the eNB comprising:a processor configured to generate D2D scheduling assignment (D2D SA) grant associated with a transmission (Tx) UE and generate a D2D data grant associated with the Tx UE; and
a transmitter to transmit, to the Tx UE, the generated D2D SA grant and the generated D2D data grant, the D2D SA grant enabling the Tx UE to transmit SA#0 to a reception (Rx) UE through a D2D communication, the D2D data grant enabling the Tx UE to transmit Transport Block #0 (TB#0) to the Rx UE, wherein SA#0 is associated with first resources of a first multiple transmission opportunities (MTO) of a first period, and wherein the TB#0 is associated with second resources of a second MTO of the first period,
wherein the processor is configured to generate a separate grant for indicating overriding of the D2D SA grant, wherein the overriding replaces a scheduled transmission of the SA#0 in the first MTO of the first period with a transmission of SA#1 in the first MTO of the first period, and wherein the SA#1 is associated with third resources, of the first MTO, that are different from the first resources, and
wherein the transmitter transmits, to the Tx UE, the generated separate grant, the separate grant enabling the Tx UE to transmit, via the third resources, the SA#1 to the Rx UE.

US Pat. No. 10,531,455

APPARATUS AND METHOD FOR DETERMINING D2D DATA RESOURCE FOR D2D COMMUNICATION

Innovative Technology Lab...

1. A method comprising:receiving, by a user equipment (UE) and from an evolved NodeB (eNB), configuration information associated with a device-to-device (D2D) data transmission resource, the configuration information comprising information of a D2D data allocation period;
determining, in each D2D data allocation period, a D2D data transmission resource offset and a duration associated with a D2D data transmission resource bitmap, the D2D data transmission resource bitmap comprising at least one bit having bit value 1 and at least one bit having bit value 0;
determining, based on a length of the duration and based on a length of the D2D data transmission resource bitmap, a quantity of repetition of the D2D data transmission resource bitmap;
determining, based on the repetition of the D2D data transmission resource bitmap, a pool of subframes in the duration associated with the D2D data transmission resource bitmap, the pool of subframes corresponding to D2D data transmission resources; and
transmitting, from the UE and based on the pool of subframes, D2D data,
wherein the pool of subframes is associated with the bit value 1 of the D2D data transmission resource bitmap and has a repetitive pattern in the duration associated with the D2D data transmission resource bitmap.

US Pat. No. 10,511,426

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL

Innovative Technology Lab...

1. A narrow-band (NB) wireless device comprising:one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the NB wireless device to:
receive positioning reference signal (PRS) configuration information;
determine narrowband PRS (NB PRS) configuration information for the NB wireless device, the NB PRS configuration information for the NB wireless device comprising information of an NB PRS reference cell that generates an NB PRS for the NB wireless device;
determine PRS configuration information for a wireless device, the wireless device being assigned to use a frequency band unavailable for the NB wireless device, and the PRS configuration information for the wireless device comprising information of a PRS reference cell that generates a PRS for the wireless device;
generate, based on the NB PRS configuration information for the NB wireless device and the PRS configuration information for the wireless device, a reference signal time difference (RSTD) measurement; and
transmit the RSTD measurement.

US Pat. No. 10,531,513

APPARATUS AND METHOD FOR TRANSMITTING UPLINK CONTROL INFORMATION THROUGH A PHYSICAL UPLINK CONTROL CHANNEL

Innovative Technology Lab...

1. A User Equipment (UE) for transmitting uplink control information through a Physical Uplink Control Channel (PUCCH), the UE comprising:a transceiver; and
a processor operationally coupled to the transceiver and configured to;
configure serving cells for the UE, the serving cells comprising at least six serving cells configurable for the UE;
receive PUCCH format configuration information for transmitting uplink control information associated with the configured serving cells, the PUCCH format configuration information comprising configuration information of PUCCH format 4 indicated by a Radio Resource Control (RRC) message;
determine a total number of Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) bits, scheduling request (SR) bits, and periodic Channel State Information (CSI) bits to be transmitted in a subframe;
select, at least based on the determined total number, a PUCCH format to transmit at least one of HARQ-ACK, SR, and periodic CSI in the subframe, the selected PUCCH format being one of PUCCH formats comprising the PUCCH format 4 and PUCCH format 3, wherein the selecting the PUCCH format comprises:
determine that simultaneousAckNackAndCQI-Format4-r13 is set true and determining that the total number of HARQ-ACK bits, SR bits, and periodic CSI bits to be transmitted in the subframe is less than or equal to a threshold value; and
determine to use the PUCCH format 4 without dropping the periodic CSI; and
transmit the uplink control information associated with the configured serving cells in the subframe using the selected PUCCH format, the uplink control information associated with the configured serving cells comprising the at least one of HARQ-ACK, SR, and periodic CSI,
wherein the processor is further configured to determine whether the total number of HARQ-ACK bits, SR bits, and periodic CSI bits to be transmitted in a subframe is greater than 22; and select the PUCCH format 4 when the determined total number is greater than 22.

US Pat. No. 10,645,747

METHOD AND APPARATUS FOR OPERATING BUFFER STATE REPORT IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method comprising:establishing, by a wireless device, a radio resource control (RRC) connection with an evolved NodeB (eNB);
receiving, from the eNB, configuration information comprising information of a resource allocation mode for a direct data transmission between the wireless device and a different wireless device and comprising information of a timer associated with a buffer status report (BSR) for the direct data transmission;
determining, by the wireless device, a radio link failure (RLF), the RLF being associated with a connection problem of the RRC connection;
initializing a re-establishment process for the RRC connection;
canceling, based on the determined RLF, all BSRs for the direct data transmission, wherein the canceled BSRs for the direct data transmission are associated with a direct data transmission scheduled by the eNB; and
initializing the timer associated with the BSR for the direct data transmission; and
performing, by the wireless device, a direct data transmission in an exceptional case by selecting, based on information of CommTxPoolExceptional, a resource for the direct data transmission in the exceptional case, wherein the CommTxPoolExceptional indicates resource pool information for the direct data transmission in the exceptional case.

US Pat. No. 10,687,334

METHOD AND APPARATUS FOR DETERMINING RESOURCE POOL

Innovative Technology Lab...

1. A wireless device comprising:a processor; and
memory storing instructions that, when executed by the processor, cause the wireless device to:
receive, from an evolved NodeB (eNB), resource pool configuration information comprising a bitmap to determine a resource pool for a sidelink transmission;
determine, for a period having a plurality of consecutive subframes, a first subset of subframes by excluding, from the plurality of consecutive subframes:
subframes in which a sidelink synchronization signal (SLSS) resource is configured; and
subframes other than uplink subframes;
determine, for the period, a second subset of subframes by excluding, from the first subset of subframes, one or more subframes, wherein a quantity of the second subset of subframes corresponds to an integer multiple of a length of the bitmap; and
determine, based on a plurality of repetitions of the bitmap, the resource pool for a sidelink transmission from the second subset of subframes,
wherein the instructions, when executed by the processor, cause the wireless device to determine the second subset of subframes by:
determining a quantity of the first subset of subframes;
performing a modulo operation based on he quantity of the first subset of subframes and a quantity of bits in the bitmap; and
determining the one or more subframes based on the modulo operation.

US Pat. No. 10,681,758

APPARATUS AND METHOD FOR TRANSMITTING D2D DATA BASED ON RESOURCE PATTERN

Innovative Technology Lab...

1. A method comprising: receiving, by a user equipment (UE) and from an evolved NodeB (eNB), configuration information associated with a device-to-device (D2D) data transmission resource, the configuration information comprising information of a D2D data allocation period; determining, by the UE, a D2D data transmission resource in a D2D data allocation period, the D2D data transmission resource comprising a pool of subframes; selecting, based on a pattern derived from a basic pattern, D2D data transmission subframes from among the pool of subframes, wherein the pattern comprises a first part of the basic pattern, and wherein a quantity of the first part of the basic pattern in the pattern is greater than a quantity of a second part of the basic pattern in the pattern; and transmitting, from the UE to another UE, D2D data based on the selected D2D data transmission subframes, wherein the selecting the D2D data transmission subframes comprises: determining the pattern based on a value of (R modulo X), wherein R corresponds to a quantity of subframes in the pool of subframes and X corresponds to a length of the basic pattern, where R and X are natural numbers, and wherein a length of the pattern corresponds to the quantity of subframes in the pool of subframes.

US Pat. No. 10,873,923

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method comprising:receiving, by a wireless user device, narrow-band (NB) positioning reference signal (PRS) configuration information comprising an NB PRS bitmap indicating a pattern for selecting NB PRS subframes, wherein at least one of the NB PRS subframes comprises an NB PRS for positioning the wireless user device;
determining, based on an NB PRS muting indicator, that first radio frames of a cell are not muted;
determining, from the first radio frames of the cell and based on a plurality of repetitions of the NB PRS bitmap, first NB PRS subframes of the cell;
determining a first NB PRS mapped in the first NB PRS subframes of the cell;
generating, based on the first NB PRS, a reference signal time difference (RSTD); and
transmitting, by the wireless user device, the RSTD.

US Pat. No. 10,582,519

METHOD AND APPARATUS FOR TRANSMISSION/RECEPTION OF D2D SIGNAL

Innovative Technology Lab...

1. A transmission (Tx) wireless device comprising:a wireless transceiver comprising an antenna and configured to:
receive resource assignment information transmitted from an evolved NodeB (eNB), the resource assignment information being associated with one or more discovery signals to be transmitted in a discovery period; and
transmit one or more discovery signals to a reception (Rx) wireless device; and
one or more processors configured to:
determine that a first discovery signal associated with a first discovery type and a second discovery signal associated with a second discovery type are to be transmitted in a first subframe included in the discovery period; and
in the first subframe, transmit the second discovery signal associated with the second discovery type and drop the first discovery signal associated with the first discovery type,
wherein the one or more processors is configured to drop a transmission of a control signal in response to determining that a third discovery signal and the control signal are to be transmitted in a second subframe, and
wherein in the second subframe, the wireless transceiver is configured to transmit the third discovery signal without transmitting the control signal, wherein the second subframe is included in the discovery period.

US Pat. No. 10,638,436

METHODS FOR BROADCAST CHANNEL CONFIGURATION AND BROADCAST CHANNEL TRANSMISSION FOR COMMUNICATION SYSTEMS

Innovative Technology Lab...

1. A method of scrambling a physical broadcast channel (PBCH), the method comprising:initializing, based on a cell identifier of a base station, a scrambling sequence generator to scramble a portion of each PBCH in eight consecutive radio frames,
wherein each radio frame in the eight consecutive radio frames has a duration of 10 ms;
determining a plurality of synchronization signal (SS) blocks in the eight consecutive radio frames,
wherein each SS block comprises a PBCH;
generating, based on the initialized scrambling sequence generator, a scrambling sequence to scramble the portions of each PBCH within the eight consecutive radio frames,
wherein the scrambling sequence comprises four different sequence parts;
scrambling PBCHs in a first 20 ms of the eight consecutive radio frames by applying a first one of the four different sequence part;
scrambling PBCHs in a second 20 ms of the eight consecutive radio frames by applying a second one of the four different sequence part;
scrambling PBCHs in a third 20 ms of the eight consecutive radio frames by applying a third one of the four different sequence part; and
scrambling PBCHs in a fourth 20 ms of the eight consecutive radio frames by applying a fourth one of the four different sequence part.

US Pat. No. 10,701,652

METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNAL FOR DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A first wireless communication device comprising:a receiver to receive a synchronization signal transmitted from a synchronization source;
a processor to determine an indicator based on the received synchronization signal, and to determine a synchronization timing reference based on the indicator; and
a transmitter to transmit, based on the determined synchronization timing reference, a synchronization signal for a direct communication between the first wireless communication device and a second wireless communication device,
wherein determining, by the processor, the synchronization timing reference comprises:
based on the indicator, determining a category of the synchronization source;
prioritizing the synchronization source based on determining whether the synchronization source is a base station, a wireless communication device synchronized with a base station, or a wireless communication device having a synchronization timing reference independent from a base station;
determining whether the synchronization source is a wireless communication device located in a coverage of a base station or a wireless communication device located out of a coverage of a base station, among wireless communication devices synchronized with a base station;
prioritizing the synchronization source further based on determining whether the synchronization source is a wireless communication device located in a coverage of a base station or a wireless communication device located out of a coverage of a base station; and
determining the synchronization timing reference based on the prioritizations.

US Pat. No. 10,638,302

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A User Equipment (UE) comprising:a transceiver; and
a processor operationally coupled to the transceiver and configured to:
receive, through Radio Resource Control (RRC) signaling, information of a resource pool for a device-to-device (D2D) communication, wherein the information of the resource pool comprises information of a discovery subframe in which a D2D discovery signal is to be communicated;
determine that in the discovery subframe, the D2D discovery signal is prioritized over a communication with an evolved NodeB (eNB) unless the communication with the eNB is associated with a random access (RA) procedure;
transmit a RA preamble through a Physical Random Access Channel (PRACH);
determine whether the discovery subframe corresponds to a RA subframe in which a RA response for the UE is to be monitored; and
based on determining that the discovery subframe corresponds to the RA subframe, monitoring the RA response during the discovery subframe.

US Pat. No. 10,609,709

METHOD AND APPARATUS OF UPLINK SCHEDULING AND HARQ TIMING

Innovative Technology Lab...

1. A User Equipment (UE) to transmit an uplink channel, the UE supporting a cross-carrier scheduling between a Frequency Division Duplex (FDD) cell and a Time Division Duplex (TDD) cell, the UE comprising:one or more processors; and
memory storing instructions, when executed by the one or more processors, that cause the UE to:
configure the TDD cell as a scheduled cell scheduled by the FDD cell; and
when a TDD uplink/downlink configuration of the TDD cell is zero and the TDD cell is a scheduled cell scheduled by the FDD cell:
receive an uplink (UL) grant via a subframe n of the FDD cell;
transmit, via a subframe (n+k1) of the TDD cell, a Physical Uplink Shared Channel (PUSCH) associated with the UL grant, wherein k1 is determined to be 4 based on determining that n is 0 or 5, or k1 is determined to be 6 based on determining that n is 1 or 6; and
receive, via a subframe i of the FDD cell, a Physical Hybrid Automatic Repeat reQuest Indicator Channel (PHICH), the PHICH being associated with a PUSCH transmitted via a subframe (i?k2) of the TDD cell, wherein k2 is determined to be 7 based on determining that (i?k2) is 3 or 8, or k2 is determined to be 4 based on determining that (i?k2) is 2 or 7,
wherein the cross-carrier scheduling comprises at least one of a downlink cross-carrier scheduling and an uplink cross-carrier scheduling,
wherein Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) are transmitted through different downlink carriers in the downlink cross-carrier scheduling, and
wherein a downlink carrier in which the PDCCH having a first UL grant is transmitted is different from a downlink carrier linked with an uplink carrier in which the PUSCH associated with the first UL grant is transmitted.

US Pat. No. 10,602,467

APPARATUS AND METHOD FOR CONFIGURING SYNCHRONIZATION SIGNAL FOR D2D COMMUNICATION

Innovative Technology Lab...

1. A user equipment (UE) comprising:a processor; and
memory storing instructions that, when executed by the processor, cause the UE to:
receive a device-to-device (D2D) synchronization signal transmitted from a second UE, the D2D synchronization signal comprising a primary D2D synchronization signal (PD2DSS) and a secondary D2D synchronization signal (SD2DSS);
determine, based on the received PD2DSS, a root index used for the received PD2DSS, wherein the root index used for the received PD2DSS has one of two integer values X and Y, and wherein each of the integer value X and integer value Y is not an element of a set {25, 29, 34}; and
determine, based on the root index integer X or Y, a type of a synchronization source;
determine the SD2DSS mapped in two Single Carrier-Frequency Division Multiplexing (SC-FDM) symbols in a same subframe; and
configure one of two different modes, based on determining whether a first m-sequence of the SD2DSS is mapped to first sub-carriers of the two SC-FDM symbols or mapped to second sub-carriers of the two SC-FDM symbols,
wherein indexes of the first sub-carriers are even numbers and indexes of the second sub-carriers are odd numbers.

US Pat. No. 10,700,835

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL

Innovative Technology Lab...

1. A narrow-band (NB) wireless device comprising:a wireless transceiver comprising one or more antennas;
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the NB wireless device to:
receive one or more positioning reference signal (PRS) configuration parameters and one or more NB PRS configuration parameters;
determine, based on the one or more NB PRS configuration parameters, NB PRS information for the NB wireless device, the NB PRS information comprising information of an NB PRS reference cell that transmits an NB PRS for the NB wireless device;
determine, based on the one or more PRS configuration parameters, PRS information for a wireless device, the wireless device being capable of using a frequency band unavailable for the NB wireless device, and the PRS information comprising information of a PRS reference cell that transmits a PRS for the wireless device;
generate, based on the NB PRS for the NB wireless device and the PRS for the wireless device, a reference signal time difference (RSTD) measurement; and
transmit the RSTD measurement.

US Pat. No. 10,681,675

APPARATUS AND METHOD FOR TRANSMITTING DATA THROUGH DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A first user equipment (UE) comprising:a processor; and
memory storing instructions, when executed by the processor, that cause the first UE to:
determine a device-to-device (D2D) resource pool comprising D2D communication resources selected from a plurality of subframes, the selected D2D communication resources comprising a sequence of D2D subframes assigned for a D2D communication;
determine, based on a length of the D2D resource pool, a resource pattern for transmission (RPT) comprising a plurality of sub-RPTs, each of the sub-RPTs indicating different D2D subframes in the D2D resource pool and having a same selection pattern for identifying at least one D2D subframe in which the first UE transmits D2D data;
determine, based on the RPT and from the sequence of D2D subframes, a plurality of D2D subframes for a D2D data transmission, wherein the sub-RPTs each excludes at least one D2D subframe according to a same exclusion pattern;
generate, at the first UE, D2D data; and
transmit, from the first UE to a second UE, the generated D2D data through a plurality of the D2D subframes,
wherein a first one of the sub-RPTs precedes a second one of the sub-RPTs in the RPT, and
wherein at least one D2D subframe selected based on the first one of the sub-RPTs precedes at least one D2D subframe selected based on the second one of the sub-RPTs in a time axis.

US Pat. No. 10,681,695

METHOD AND APPARATUS FOR CONFIGURING DM-RS FOR V2X

Innovative Technology Lab...

1. A device to transmit Demodulation-Reference Signal (DM-RS) configured for Vehicle-to-everything (V2X) communication, the device comprising:a transceiver; and
a processor configured to:
determine, based on a first group-hopping associated with a first slot of a subframe, a first DM-RS for V2X communication, and generate, based on a second group-hopping associated with the first slot and with an offset, a second DM-RS for V2X communication, wherein the first group-hopping and the second group-hopping apply different inputs in a pseudo-random sequence;
map the first DM-RS for V2X communication in a first symbol in the first slot of the subframe, and map the second DM-RS for V2X communication in a second symbol in the first slot of the subframe;
determine, based on a third group-hopping associated with a second slot of the subframe, a third DM-RS for V2X communication, and generate, based on a fourth group-hopping associated with the second slot and with an offset, a fourth DM-RS for V2X communication, wherein the third group-hopping and the fourth group-hopping apply different inputs in the pseudo-random sequence; and
map the third DM-RS for V2X communication in a first symbol in the second slot of the subframe, and map the fourth DM-RS for V2X communication in a second symbol in the second slot of the subframe,
wherein the transceiver transmits the mapped first DM-RS for V2X communication, the mapped second DM-RS for V2X communication, the mapped third DM-RS for V2X communication, and the mapped fourth DM-RS for V2X communication.

US Pat. No. 10,652,852

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING POSITIONING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A wireless device comprising:a transceiver to receive narrow-band (NB) positioning reference signal (PRS) configuration information comprising:
an NB PRS bitmap indicating a pattern for selecting NB PRS subframes from a plurality of subframe groups, wherein each subframe group comprises N downlink subframes, wherein the NB PRS bitmap has a size of N consecutive bits respectively corresponding to the N downlink subframes of each subframe group, and wherein each NB PRS subframe comprises an NB PRS; and
a processor to determine, based on the NB PRS bitmap, a first NB PRS mapped in at least one of NB PRS subframes of an NB PRS reference cell, and to generate, based on the first NB PRS, a reference signal time difference (RSTD) measurement,
wherein the transceiver transmits the RSTD measurement.

US Pat. No. 10,644,849

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DEMODULATION REFERENCE SIGNAL

Innovative Technology Lab...

1. A method comprising:determining a first set, a second set, and a third set, of antenna ports, for a demodulation reference signal (DM-RS) transmission, wherein a first code division multiplexing (CDM) group comprises the first set of antenna ports, a second CDM group comprises the second set of antenna ports, and a third CDM group comprises the third set of antenna ports;
determining, for the first CDM group, a first frequency index associated with first adjacent resource elements, wherein the first adjacent resource elements correspond to two adjacent symbols in a time axis and to first two adjacent subcarriers in a frequency axis;
determining, for the second CDM group, a second frequency index associated with second adjacent resource elements, wherein the second adjacent resource elements correspond to the two adjacent symbols in the time axis and to second two adjacent subcarriers in the frequency axis;
determining, for the third CDM group, a third frequency index associated with third adjacent resource elements, wherein the third adjacent resource elements correspond to the two adjacent symbols in the time axis and to third two adjacent subcarriers in the frequency axis;
transmitting, based on orthogonal cover codes applied to the first adjacent resource elements, a DM-RS associated with the first set of antenna ports;
transmitting, based on the orthogonal cover codes applied to the second adjacent resource elements, a DM-RS associated with the second set of antenna ports; and
transmitting, based on the orthogonal cover codes applied to the third adjacent resource elements, a DM-RS associated with the third set of antenna ports,
wherein the orthogonal cover codes comprise at least one orthogonal cover code to be applied to two adjacent subcarriers.

US Pat. No. 10,973,004

APPARATUS AND METHOD FOR TRANSMITTING DATA THROUGH DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A first wireless user device comprising:at least one processor configured to:
determine a resource pool comprising communication resources selected from a plurality of transmission opportunities, wherein the selected communication resources comprise a sequence of transmission opportunities, in different time durations, for device-to-device communication;
determine, based on a length of the resource pool, a resource pattern for transmission (RPT) comprising a plurality of sub-RPTs, wherein each of the sub-RPTs indicates different transmission opportunities in the sequence of transmission opportunities and has a same selection pattern for indicating at least one transmission opportunity in which the first wireless user device transmits data; and
determine, based on the RPT and from the sequence of transmission opportunities, a first plurality of transmission opportunities for data transmission, wherein the sub-RPTs each excludes at least one transmission opportunity according to a same exclusion pattern, wherein a first one of the sub-RPTs precedes a second one of the sub-RPTs in the RPT; and
a wireless transceiver comprising at least one antenna and configured to:
receive, from a base station, at least one configuration parameter associated with device-to-device communication between wireless user devices; and
transmit, from the first wireless user device to a second wireless user device, the data via the first plurality of transmission opportunities.

US Pat. No. 10,945,252

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL AND DATA CHANNEL FOR NR SYSTEM

Innovative Technology Lab...

1. A method comprising:receiving, by a wireless device from a base station, one or more radio resource control (RRC) signals indicating a number of first bandwidth parts configured for the wireless device;
receiving, by the wireless device, downlink control information (DCI) comprising a first indicator field that indicates at least one of the first bandwidth parts, wherein a bitwidth of the first indicator field is based on the number of the first bandwidth parts configured for the wireless device;
determining, based on the bitwidth and based on the DCI, a value of the first indicator field;
determining, based on the value of the first indicator field, one or more resources of the at least one of the first bandwidth parts; and
performing, based on the one or more resources, a data communication with the base station.

US Pat. No. 10,986,687

METHOD AND APPARATUS FOR OPERATING BUFFER STATE REPORT IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method comprising:receiving, by a wireless user device from a base station, one or more messages comprising information of a resource allocation mode for direct data transmission between the wireless user device and a different wireless user device;
determining, by the wireless user device, a radio link failure (RLF) associated with a problem of a radio resource control (RRC) connection;
canceling, based on the determined RLF, buffer status reports (BSRs) for direct data transmission, wherein the canceled BSRs for direct data transmission are associated with a direct data transmission scheduled by the base station;
initializing a timer associated with the BSRs for direct data transmission; and
performing, based on a resource for a direct data transmission in an exceptional case, the direct data transmission in the exceptional case, wherein the resource for the direct data transmission in the exceptional case is based on information of CommTxPoolExceptional, and wherein the CommTxPoolExceptional indicates resource pool information for the direct data transmission in the exceptional case.

US Pat. No. 10,813,091

METHOD AND APPARATUS FOR WIRELESS COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method comprising:receiving, by a user device and via a first carrier, an uplink grant in subframe n;
determining a time period for a wireless communication between user devices, wherein the wireless communication between user devices is associated with a second carrier;
determining, by the user device and based on the uplink grant received via the first carrier, a first subframe associated with an uplink signal to a base station associated with the first carrier;
based on determining that the first subframe overlaps in time with the time period, refraining from transmitting the uplink signal in the first subframe; and
transmitting, based on a reception timing of the uplink grant and based on a non-adaptive retransmission, the uplink signal in subframe n+12,
wherein the first subframe corresponds to subframe n+4.

US Pat. No. 11,032,821

METHOD AND APPARATUS FOR TRANSMITTING BUFFER STATUS REPORT IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION

Innovative Technology Lab...

1. A method comprising:receiving, by a first wireless user device from a base station, configuration information associated with direct data transmission between the first wireless user device and one or more wireless user devices, wherein the configuration information comprises information of a resource selection mode for direct data transmission, and wherein the information of a resource selection mode indicates a resource pool from which the first wireless user device selects a resource for direct data transmission to one or more wireless user devices;
mapping a first target identity to a first group identity, and mapping a second target identity to a second group identity, wherein the first target identity is associated with at least one target wireless user device of a first group of target wireless user devices, and wherein the second target identity is associated with at least one target wireless user device of a second group of target wireless user devices;
transmitting, to the base station, a radio resource control (RRC) message comprising information of the first target identity and information of the second target identity; and
transmitting, to the base station, a signal associated with a MAC-layer message, wherein the MAC-layer message comprises:
a first field that indicates the first target identity and indicates the first group identity; and
a second field that indicates the second target identity and indicates the second group identity.

US Pat. No. 10,912,049

APPARATUS AND METHOD FOR CONFIGURING SYNCHRONIZATION SIGNAL FOR COMMUNICATION BETWEEN USER DEVICES

Innovative Technology Lab...

1. A wireless user device comprising:a wireless transceiver to receive a downlink signal from a base station, and to receive one or more wireless signals for direct communication from a second wireless user device;
a processor; and
memory storing instructions that, when executed by the processor, cause the wireless user device to:
receive a synchronization signal transmitted from the second wireless user device, the synchronization signal comprising a primary synchronization signal and a secondary synchronization signal;
determine, based on the received primary synchronization signal, a root index associated with the received primary synchronization signal, wherein the root index associated with the received primary synchronization signal has one of a plurality of integer values, and wherein each of the plurality of integer values is different from root index values associated with synchronization signals transmitted from one or more base stations; and
determine, based on the one of the plurality of integer values, a type of a synchronization source;
determine the secondary synchronization signal mapped in two Single Carrier-Frequency Division Multiplexing (SC-FDM) symbols in a same subframe; and
configure one of two different modes, based on determining whether a first m-sequence of the secondary synchronization signal is mapped to first sub-carriers of the two SC-FDM symbols or mapped to second sub-carriers of the two SC-FDM symbols,
wherein indexes of the first sub-carriers are even numbers and indexes of the second sub-carriers are odd numbers.

US Pat. No. 10,880,925

METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS

INNOVATIVE TECHNOLOGY LAB...

1. A method comprising:receiving, by a wireless device from a base station, one or more messages comprising downlink control information (DCI) associated with a DCI format;
determining that a first field of the DCI corresponds to a predefined value;
determining that, based on the first field corresponding to the predefined value, the DCI is for a random access procedure associated with a physical downlink control channel (PDCCH) order;
determining, based on the determining that the DCI is for a random access procedure associated with a PDCCH order and based on a plurality of fields of the DCI, a random access channel (RACH) occasion associated with a synchronization signal/physical broadcasting channel (SS/PBCH) block, wherein the plurality of fields of the DCI comprise:
an SS/PBCH block index field having a value indicating the SS/PBCH block; and
a RACH index field having a value indicating one or more RACH occasions;
determining, based on the SS/PBCH block index field and the RACH index field, the RACH occasion associated with the SS/PBCH block; and
transmitting, based on the RACH occasion associated with the SS/PBCH block, a random access preamble.

US Pat. No. 10,999,118

METHOD AND APPARATUS FOR WIDEBAND OPERATION IN NR COMMUNICATION SYSTEM

Innovative Technology Lab...

1. A method comprising:selecting, by a wireless user device and among a plurality of synchronization signal (SS) blocks, a first SS block comprising a first synchronization signal and comprising a first physical broadcast channel (PBCH);
determining, from the first PBCH of the selected first SS block, a value of a first subcarrier offset between the first SS block and a Resource Block (RB) grid;
determining, based on the value of the first subcarrier offset and a frequency location of the first SS block, a frequency location of the RB grid; and
decoding, based on the determined frequency location of the RB grid, one or more of: a reference signal, a control channel, or a data channel,
wherein the plurality of SS blocks comprise the first SS block and a second SS block,
wherein the second SS block comprises a second synchronization signal and a second PBCH,
wherein the second PBCH indicates a value of a second subcarrier offset between the second SS block and the RB grid, and
wherein a distance between the first SS block and a center frequency of a carrier is different from a distance between the second SS block and the center frequency of the carrier.

US Pat. No. 10,925,023

METHOD AND APPARATUS FOR COMMUNICATING REFERENCE SIGNAL FOR BROADCAST CHANNEL

INNOVATIVE TECHNOLOGY LAB...

1. A method comprising:determining, based on a synchronization signal (SS) block index and a half-frame timing index, an initialization value for a reference signal associated with a physical broadcast channel (PBCH);
generating, based on the initialization value, the reference signal associated with a PBCH;
mapping, based on one or more of a frequency domain shift value or a time domain shift value, the generated reference signal to resource elements (REs), wherein the REs are included in an SS block corresponding to the SS block index; and
transmitting, to a terminal, the mapped reference signal and the PBCH,
wherein the SS block corresponding to the SS block index comprises at least four orthogonal frequency division multiplexing (OFDM) symbols,
wherein a first OFDM symbol of the at least four OFDM symbols comprises a primary synchronization signal, a second OFDM symbol of the at least four OFDM symbols comprises a portion of the PBCH, and a third OFDM symbol of the at least four OFDM symbols comprises a secondary synchronization signal,
wherein the second OFDM symbol is located between the first OFDM symbol and the third OFDM symbol,
wherein the third OFDM symbol is located between the second OFDM symbol and a fourth OFDM symbol of the at least four OFDM symbols,
wherein another portion of the PBCH is mapped in the third OFDM symbol and the fourth OFDM symbol, and
wherein a demodulation reference signal (DM-RS) associated with the PBCH is mapped in the second, third and fourth OFDM symbols.

US Pat. No. 11,018,823

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DEMODULATION REFERENCE SIGNAL

Innovative Technology Lab...

1. An apparatus comprising:one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the apparatus to:
determine a first set, a second set, and a third set, of antenna ports, for demodulation reference signal (DM-RS) transmission, wherein a first code division multiplexing (CDM) group is associated with the first set of antenna ports, a second CDM group is associated with the second set of antenna ports, and a third CDM group is associated with the third set of antenna ports;
determine, for the first CDM group, a first frequency index associated with first adjacent resource elements corresponding to two adjacent symbols in a time axis and to first two adjacent subcarriers in a frequency axis;
determine, for the second CDM group, a second frequency index associated with second adjacent resource elements corresponding to the two adjacent symbols in the time axis and to second two adjacent subcarriers in the frequency axis;
determine, for the third CDM group, a third frequency index associated with third adjacent resource elements corresponding to the two adjacent symbols in the time axis and to third two adjacent subcarriers in the frequency axis;
transmit, based on orthogonal cover codes that are applied to the first adjacent resource elements, a DM-RS associated with the first set of antenna ports;
transmit, based on the orthogonal cover codes that are applied to the second adjacent resource elements, a DM-RS associated with the second set of antenna ports; and
transmit, based on the orthogonal cover codes that are applied to the third adjacent resource elements, a DM-RS associated with the third set of antenna ports,
wherein the orthogonal cover codes comprise at least one orthogonal cover code to be applied to two adjacent subcarriers.

US Pat. No. 10,925,095

APPARATUS AND METHOD FOR PERFORMING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM

INNOVATIVE TECHNOLOGY LAB...

1. A method comprising:transmitting, by a wireless device to a base station, a first random access preamble;
determining, based on a transmission time point associated with the first random access preamble, a time window for monitoring for a random access response;
receiving, during the time window, a first random access response;
determining, based on receiving the first random access response, transmission of a second random access preamble, wherein a time for preparing for the transmission of the second random access preamble is set based on one of:
a first subcarrier spacing associated with the first random access preamble; or
a second subcarrier spacing associated with the first random access response; and
transmitting, based on the preparing, the second random access preamble.

US Pat. No. 9,525,523

METHOD AND APPARATUS FOR CONTROLLING TPC COMMAND TIMING CONSIDERING TDD-FDD CARRIER AGGREGATION

INNOVATIVE TECHNOLOGY LAB...

1. A method of receiving a transmit power control (TPC) command in a wireless communication system supporting Time Division
Duplex (TDD)-Frequency Division Duplex (FDD) Carrier Aggregation (CA), the method comprising:
establishing a Radio Resource Control (RRC) connection with a base station through a first serving cell, the first serving
cell supporting a TDD mode;

receiving, at a UE, an RRC message through the first serving cell, the RRC message comprising carrier aggregation (CA) configuration
information, the CA configuration information comprising information of a second serving cell supporting an FDD mode, and
the first serving cell and the second serving cell being aggregated by a TDD-FDD CA scheme;

detecting, at the UE, a Physical Downlink Control Channel (PDCCH) transmitted through the first serving cell, the PDCCH comprising
a Transmit Power Control (TPC) command and being received in a subframe n-4; and

transmitting, from the UE, a Physical Uplink Shared Channel (PUSCH) associated with the TPC command through the second serving
cell, the PUSCH being transmitted in a subframe n.