Configuration method and apparatus for common SL DRX configuration in NR V2X

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

obtaining information for at least one sidelink (SL) discontinuous reception (DRX) configuration for groupcast and broadcast communication mapped from at least one quality of service (QoS) profile and information for a default SL DRX configuration for groupcast and broadcast communication;

generating a medium access control (MAC) protocol data unit (PDU) related to SL communication;

transmitting, to a second device, sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) through a physical sidelink control channel (PSCCH), using the default SL DRX configuration for a QoS profile related to the MAC PDU, that is not mapped to the at least one SL DRX configuration; and

transmitting, to the second device, the MAC PDU through the PSSCH, using the default SL DRX configuration for the QoS profile, that is not mapped to the at least one SL DRX configuration.

2 . The method of claim 1 , wherein the QoS profile is present.

3 . The method of claim 1 , wherein the QoS profile is not present.

4 . The method of claim 1 , wherein the default SL DRX configuration is used for the transmissions of the SCI and the MAC PDU, based on the MAC PDU being related to data for a groupcast service or a broadcast service.

5 . The method of claim 1 , wherein the default SL DRX configuration is used for the transmissions of the SCI and the MAC PDU, based on the MAC PDU being related to a control signal for a configuration of a unicast connection not related to data for a groupcast service or a broadcast service.

6 . The method of claim 1 , wherein the default SL DRX configuration is used for the transmissions of the SCI and the MAC PDU, based on the MAC PDU including a direct communication request (DCR) message.

7 . The method of claim 1 , wherein the default SL DRX configuration is used for the transmissions of the SCI and the MAC PDU, based on the MAC PDU not being mapped to any QoS profile.

8 . The method of claim 1 , wherein the QoS profile is a first QoS profile mapped to the MAC PDU, and

wherein the first QoS profile is not mapped to the at least one SL DRX configuration.

9 . The method of claim 1 , wherein a parameter in the default SL DRX configuration is randomized, and

wherein the randomizing of the parameter in the default SL DRX configuration is performed based on a change of a zone ID where the first device is located.

10 . The method of claim 1 , wherein a parameter in the default SL DRX configuration is randomized, and

wherein the randomizing of the parameter in the default SL DRX configuration is performed based on a change in whether the first device is in coverage.

11 . The method of claim 1 , wherein a parameter in the default SL DRX configuration is randomized, and

wherein the randomizing of the parameter in the default SL DRX configuration is performed based on a change of a service ID of the first device.

12 . The method of claim 1 , wherein a parameter in the default SL DRX configuration is randomized, and

wherein the randomizing of the parameter in the default SL DRX configuration is performed based on remaining battery of the first device.

13 . The method of claim 1 , wherein a parameter in the default SL DRX configuration is randomized, and

wherein the randomizing of the parameter in the default SL DRX configuration is performed based on a change of a type or a direction of the SL communication.

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 information for at least one sidelink (SL) discontinuous reception (DRX) configuration for groupcast and broadcast communication mapped from at least one quality of service (QoS) profile and information for a default SL DRX configuration for groupcast and broadcast communication;

generate a medium access control (MAC) protocol data unit (PDU) related to SL communication;

transmit, to a second device, sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) through a physical sidelink control channel (PSCCH), using the default SL DRX configuration for a QoS profile related to the MAC PDU, that is not mapped to the at least one SL DRX configuration; and

transmit, to the second device, the MAC PDU through the PSSCH, using the default SL DRX configuration for the QoS profile, that is not mapped to the at least one SL DRX configuration.

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 information for at least one sidelink (SL) discontinuous reception (DRX) configuration for groupcast and broadcast communication mapped from at least one quality of service (QoS) profile and information for a default SL DRX configuration for groupcast and broadcast communication;

generate a medium access control (MAC) protocol data unit (PDU) related to SL communication;

transmit, to a second UE, sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) through a physical sidelink control channel (PSCCH), using the default SL DRX configuration for a QoS profile related to the MAC PDU, that is not mapped to the at least one SL DRX configuration; and

transmit, to the second UE, the MAC PDU through the PSSCH, using the default SL DRX configuration for the QoS profile, that is not mapped to the at least one SL DRX configuration.