Discontinuous reception for sidelink communications in wireless communications systems

A method for wireless communication at a user equipment (UE), comprising:

• receiving, during operation in a connected mode, an out-of-coverage mode, an idle mode, or an inactive mode, a message including a group-common sidelink discontinuous reception configuration to be used by a group of UEs;
• and
• monitoring a sidelink channel during a temporal period, the temporal period indicated by the group-common sidelink discontinuous reception configuration.

A method for wireless communication at a first user equipment (UE), comprising:

• communicating a first discovery message with a second UE during an active duration of a discontinuous reception cycle, wherein the first discovery message is for identification of an available relay UE, and wherein the discontinuous reception cycle is based at least in part on a sidelink discontinuous reception configuration;
• and
• communicating a second discovery message with the second UE during the active duration of the discontinuous reception cycle.

A method for wireless communication at a network entity, comprising:

• obtaining sidelink discontinuous reception information from a user equipment (UE);
• and
• outputting a message comprising a sidelink discontinuous reception configuration including an indication of a sidelink discontinuous reception pattern for the UE, the sidelink discontinuous reception pattern for the UE comprising a set of active durations of a discontinuous reception cycle of the UE and a set of inactive durations of the discontinuous reception cycle indicated by the sidelink discontinuous reception information.

A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by one or more processors to cause the UE to:

• receive, during operation in a connected mode, an out-of-coverage mode, an idle mode, or an inactive mode, a message that includes a group-common sidelink discontinuous reception configuration to be used by a group of UEs;
• and
• monitor a sidelink channel during a temporal period, the temporal period indicated by the group-common sidelink discontinuous reception configuration.

A non-transitory computer-readable medium storing code for wireless communication at a first user equipment (UE), the code comprising instructions executable by one or more processors to cause the first UE to:

• communicate a first discovery message with a second UE during an active duration of a discontinuous reception cycle, wherein the first discovery message is for identification of an available relay UE, and wherein the discontinuous reception cycle is based at least in part on a sidelink discontinuous reception configuration;
• and
• communicate a second discovery message with the second UE during the active duration of the discontinuous reception cycle.

A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by one or more processors to cause the network entity to:

• obtain sidelink discontinuous reception information from a user equipment (UE);
• and
• output a message comprising a sidelink discontinuous reception configuration that includes an indication of a sidelink discontinuous reception pattern for the UE, the sidelink discontinuous reception pattern for the UE comprising a set of active durations of a discontinuous reception cycle of the UE and a set of inactive durations of the discontinuous reception cycle indicated by the sidelink discontinuous reception information.