Method and device for performing sidelink retransmission operation in sl drx on-duration in nr v2x

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:
• establish a first PC5-radio resource control (RRC) connection with a second device;
• start a first sidelink (SL) discontinuous reception (DRX) timer related to an active time of a first SL DRX configuration, based on a pair of source layer (L) 2 ID and a destination L2 ID related to the first PC5-RRC connection;
• receive, from the second device, a medium access control (MAC) control element (CE) related to the pair of the source L2 ID and the destination L2 ID;
• and
• stop the first SL DRX timer based on the MAC CE.

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:
• establish a first PC5-radio resource control (RRC) connection with a second UE;
• start a first sidelink (SL) discontinuous reception (DRX) timer related to an active time of a first SL DRX configuration, based on a pair of source layer (L) 2 ID and a destination L2 ID related to the first PC5-RRC connection;
• receive, from the second UE, a medium access control (MAC) control element (CE) related to the pair of the source L2 ID and the destination L2 ID;
• and
• stop the first SL DRX timer based on the MAC CE.