Method and apparatus for configuring SL DRX pattern to solve the half-duplex problem in NR V2X

A first apparatus for performing wireless communication, the first apparatus 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:
• transmit a first sidelink (SL) discontinuous reception (DRX) configuration related to a first service to a second apparatus,
• wherein the first SL DRX configuration includes information related to a timer for a first active time and information related to a first DRX cycle;
• receive a second SL DRX configuration related to a second service,
• wherein the second SL DRX configuration includes information related to a timer for a second active time and information related to a second DRX cycle;
• determine a time duration in which the first active time and the second active time overlap;
• compare a first priority value related to the first service to be transmitted within the overlapping time duration and a second priority value related to the second service to be received within the overlapping time duration;
• perform SL transmission or SL reception of a service related to a smaller priority value among the first priority value and the second priority value, within the overlapping time duration;
• and
• perform SL transmission or SL reception of a service related to a greater priority value among the first priority value and the second priority value, outside the overlapping time duration.

An apparatus configured to control a first user equipment (UE), the apparatus 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:
• transmit a first sidelink (SL) discontinuous reception (DRX) configuration related to a first service to a second UE,
• wherein the first SL DRX configuration includes information related to a timer for a first active time and information related to a first DRX cycle;
• receive a second SL DRX configuration related to a second service,
• wherein the second SL DRX configuration includes information related to a timer for a second active time and information related to a second DRX cycle;
• determine a time duration in which the first active time and the second active time overlap;
• compare a first priority value related to the first service to be transmitted within the overlapping time duration and a second priority value related to the second service to be received within the overlapping time duration;
• perform SL transmission or SL reception of a service related to a smaller priority value among the first priority value and the second priority value, within the overlapping time duration;
• and
• perform SL transmission or SL reception of a service related to a greater priority value among the first priority value and the second priority value, outside the overlapping time duration.