Configuring discontinuous reception (DRX) parameters for sidelink communications

An apparatus for wireless communications by a remote user equipment (UE), comprising:

• a memory having executable instructions stored thereon;
• and
• a processor configured to execute the executable instructions to cause the apparatus to:
• receive, from a relay UE, a configuration message indicating a configuration for sidelink discontinuous reception (DRX) communications between the remote UE and the relay UE, the configuration including a reception configuration for communications from the relay UE to the remote UE and a transmission configuration for communications from the remote UE to the relay UE;
• and
• communicate with the relay UE via a sidelink channel based on the configuration,
• receive, from the relay UE, information indicating a second discontinuous reception (DRX) period serving as an overflow DRX period for communications between the relay UE and the remote UE when communications cannot be successfully performed in a first DRX period associated with the configuration for sidelink DRX communications between the remote UE and the relay UE;
• and
• communicate with the relay UE during the second DRX period.

A method for wireless communications by a relay user equipment (UE), comprising:

• determining a first configuration for sidelink discontinuous reception (DRX) communications between the relay UE and a first remote UE, the first configuration including a transmission configuration for communications from the relay UE to the first remote UE and a reception configuration for communications from the first remote UE to the relay UE, wherein a first DRX period is associated with the first configuration for sidelink DRX communications between the relay UE and the first remote UE;
• transmitting, to the first remote UE, a configuration message indicating the first configuration for sidelink DRX communications between the relay UE and the first remote UE;
• communicating with the first remote UE via a sidelink channel based on the first configuration;
• determining a second configuration for sidelink DRX communications between the relay UE and a second remote UE, wherein the second configuration for sidelink DRX communications between the relay UE and the second remote UE comprises a second DRX period;
• and
• indicating, to the first remote UE, information about the second DRX period as an overflow DRX period that can be used for communications between the relay UE and the first remote UE.

A method for wireless communications by a remote user equipment (UE), comprising:

• receiving, from a relay UE, a configuration message indicating a configuration for sidelink discontinuous reception (DRX) communications between the remote UE and the relay UE, the configuration including a reception configuration for communications from the relay UE to the remote UE and a transmission configuration for communications from the remote UE to the relay UE;
• communicating with the relay UE via a sidelink channel based on the configuration;
• receiving, from the relay UE, information indicating a second DRX period serving as an overflow DRX period for communications between the relay UE and the remote UE when communications cannot be successfully performed in a first DRX period associated with the configuration for sidelink DRX communications between the remote UE and the relay UE;
• and
• communicating with the relay UE during the second DRX period.