Granted Patent B2

US 12,634,921 · App. 18/569,433 · Granted May 19, 2026

Inventors: Giwon Park (Seoul, KR); Seungmin Lee (Seoul, KR); Seoyoung Back (Seoul, KR); Jongwoo Hong (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04W72/121H04W72/25H04W72/543H04W92/18

Abstract

Claims (46)

1 . A method for performing, by a first device, wireless communication, the method comprising:

obtaining a sidelink (SL) discontinuous reception (DRX) configuration including information related to a timer for active time, based on a first destination layer (L) 2 ID;

receiving, from a second device in a group where groupcast communication is performed, first SCI for scheduling of a first physical sidelink shared channel (PSSCH) through a first physical sidelink control channel (PSCCH), based on an active time of the SL DRX configuration;

receiving, from the second device, a first medium access control (MAC) protocol data unit (PDU) related to the first destination L2 ID and second SCI through the first PSSCH, based on the active time;

starting the timer for active time, based on the reception of the second SCI;

transmitting, to at least one device in the group, third SCI for scheduling of a second PSSCH through a second PSCCH, based on the timer for active time being running; and

transmitting, to the at least one device, a second MAC PDU related to a second destination L2 ID through the second PSSCH, based on the timer for active time being running,

wherein the active time includes a time interval during which the timer for active time is running.

2 . The method of claim 1 , wherein the first destination L2 ID is different from the second destination L2 ID.

3 . The method of claim 1 , wherein the first destination L2 ID is the same as the second destination L2 ID.

4 . The method of claim 1 , wherein starting the timer for active time includes:

obtaining a first destination L1 ID based on the second SCI;

comparing the first destination L1 ID with 16 least significant bit (LSB) of an intended destination L2 ID of the first device; and

starting the timer for active time, based on the first destination L1 ID and 16 LSB of the intended destination L2 ID being the same.

5 . The method of claim 1 , wherein at least one SL DRX configuration including the SL DRX configuration is configured per destination L2 ID.

6 . The method of claim 1 , wherein the first device is included in the group.

7 . The method of claim 1 , wherein the first destination L2 ID and the second destination L2 ID are generated by a higher layer.

8 . The method of claim 7 , wherein the higher layer is a vehicle to everything (V2X) layer.

9 . The method of claim 1 , wherein the third SCI and the second MAC PDU are transmitted based on an SL DRX inactivity timer of the SL DRX configuration being running.

10 . The method of claim 9 , wherein the third SCI and the second MAC PDU being transmitted based on an on-duration timer of the SL DRX configuration being running is not allowed.

11 . The method of claim 1 , wherein the timer for active time includes at least one of an SL DRX on-duration timer, an SL DRX inactivity timer, or an SL DRX retransmission timer.

12 . The method of claim 1 , wherein the first destination L2 ID is related to a first SL groupcast service, and

wherein the second destination L2 ID is related to a second SL groupcast service.

13 . The method of claim 1 , wherein the first destination L2 ID is related to a first PC5 5G QoS indicator (PQI), and

wherein the second destination L2 ID is related to a second PQI.

14 . A first device for performing wireless communication, the first device comprising:

one or more memories storing instructions;

one or more transceivers; and

one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:

obtain a sidelink (SL) discontinuous reception (DRX) configuration including information related to a timer for active time, based on a first destination layer (L) 2 ID;

receive, from a second device in a group where groupcast communication is performed, first SCI for scheduling of a first physical sidelink shared channel (PSSCH) through a first physical sidelink control channel (PSCCH), based on an active time of the SL DRX configuration;

receive, from the second device, a first medium access control (MAC) protocol data unit (PDU) related to the first destination L2 ID and second SCI through the first PSSCH, based on the active time;

start the timer for active time, based on the reception of the second SCI;

transmit, to at least one device in the group, third SCI for scheduling of a second PSSCH through a second PSCCH, based on the timer for active time being running; and

transmit, to the at least one device, a second MAC PDU related to a second destination L2 ID through the second PSSCH, based on the timer for active time being running,

wherein the active time includes a time interval during which the timer for active time is running.

15 . A device adapted to control a first user equipment (UE), the device comprising:

one or more processors; and

one or more memories operably connectable to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:

obtain a sidelink (SL) discontinuous reception (DRX) configuration including information related to a timer for active time, based on a first destination layer (L) 2 ID;

receive, from a second UE in a group where groupcast communication is performed, first SCI for scheduling of a first physical sidelink shared channel (PSSCH) through a first physical sidelink control channel (PSCCH), based on an active time of the SL DRX configuration;

receive, from the second UE, a first medium access control (MAC) protocol data unit (PDU) related to the first destination L2 ID and second SCI through the first PSSCH, based on the active time;

start the timer for active time, based on the reception of the second SCI;

transmit, to at least one UE in the group, third SCI for scheduling of a second PSSCH through a second PSCCH, based on the timer for active time being running; and

transmit, to the at least one UE, a second MAC PDU related to a second destination L2 ID through the second PSSCH, based on the timer for active time being running,

wherein the active time includes a time interval during which the timer for active time is running.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (52)