SIDELINK GO-TO-SLEEP INDICATION

1 . A user equipment (UE) for wireless communication, comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more memories storing instructions configurable to be executed by the one or more processors to cause the UE to:

transmit, to another UE, a request to receive a go-to-sleep (GTS) indication relating to sidelink communication;

receive, from the other UE, the GTS indication; and

enter a sleep state based at least in part on the GTS indication.

2 . The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:

receive the GTS indication during an active duration of a sidelink discontinuous reception (DRX) operation.

3 . The UE of claim 1 , wherein the GTS indication identifies at least one of a source identifier or a destination identifier associated with the GTS indication.

4 . The UE of claim 1 , wherein the GTS indication indicates that the UE is not to receive data from the other UE.

5 . The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to operate in a sidelink mode in which the UE and the other UE perform resource selection, and in which the UE is not to transmit sidelink data, and

wherein the instructions configurable to be executed to cause the UE to enter the sleep state, are further executable by the one or more processors to cause the UE to:

refrain from monitoring both a physical sidelink control channel and a physical sidelink shared channel.

6 . The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to operate in a sidelink mode in which the UE and the other UE perform resource selection, and in which the UE is to transmit sidelink data, and

wherein the instructions configurable to be executed to cause the UE to enter the sleep state, are further executable by the one or more processors to cause the UE to:

monitor a physical sidelink control channel for first stage sidelink control information and refrain from monitoring a physical sidelink shared channel for second stage sidelink control information.

7 . The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to operate in a sidelink mode in which a network entity performs resource allocation, and

wherein the instructions configurable to be executed to cause the UE to enter the sleep state, are further executable by the one or more processors to cause the UE to:

refrain from monitoring both a physical sidelink control channel and a physical sidelink shared channel.

8 . The UE of claim 1 , wherein the GTS indication is associated with a sidelink session, of a plurality of sidelink sessions, of the UE, and wherein the instructions configurable to be executed to cause the UE to enter the sleep state, are further executable by the one or more processors to cause the UE to

determine that each of the plurality of sidelink sessions is associated with a respective GTS indication; and

enter the sleep state based at least in part on the determination.

9 . The UE of claim 1 , wherein the UE is associated with enablement to support GTS indication for a first cast type, and the UE is not associated with enablement to support GTS indication for a second cast type.

10 . The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:

transmit a request to receive the GTS indication.

11 . The UE of claim 10 , wherein the request indicates a duration for which the UE is to sleep.

12 . The UE of claim 10 , wherein the request is a sequence-based request.

13 . The UE of claim 10 , wherein the instructions configurable to be executed to cause the UE to transmit the request, are further executable by the one or more processors to cause the UE to:

transmit the request in a communication of a physical sidelink control channel or a physical sidelink shared channel.

14 . The UE of claim 10 , wherein the GTS indication is indicated by acknowledgment feedback for the request.

15 . The UE of claim 10 , wherein the instructions are further executable by the one or more processors to cause the UE to:

receive acknowledgment feedback for the request prior to receiving the GTS indication.

16 . The UE of claim 10 , wherein the instructions are further executable by the one or more processors to cause the UE to:

receive acknowledgment feedback for the request; and

initiate a timer for receiving the GTS indication.

17 . The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:

transmit, to the other UE, an additional GTS indication based at least in part on a determination that the UE is not to transmit data to the other UE; and

transmit, to the other UE, a request to receive the GTS indication based at least in part on a determination that the UE is not to receive data from the other UE.

18 . The UE of claim 1 , wherein the GTS indication indicates that the other UE is not to transmit data to the UE and is not to receive data from the UE.

19 . A method of wireless communication performed by a user equipment (UE), comprising:

transmitting, to another UE, a request to receive a go-to-sleep (GTS) indication relating to sidelink communication;

receiving, from the other UE, the GTS indication; and

entering a sleep state based at least in part on the GTS indication.

20 . A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions, when executed by one or more processors of a user equipment (UE), cause the UE to:

transmit, to another UE, a request to receive a go-to-sleep (GTS) indication relating to sidelink communication;

receive, from the other UE, the GTS indication; and

enter a sleep state based at least in part on the GTS indication.