Coordinated sidelink power savings configurations
Certain aspects of the present disclosure provide techniques for coordinated sidelink power savings configurations. A wireless node may select a sidelink power savings configuration to use for a sidelink between the wireless node and a user equipment (UE), provide the selected configuration to the UE, and follow the configuration for the sidelink. The selection may be based on input from the UE or without input from the UE. The selection may be a current power savings configuration at the wireless node, a power savings configuration suggest by the UE, or a different power savings configuration determined by the wireless node based on the current and suggested power savings configuration. When a new UE connects to the wireless node, the wireless node may reselect a power savings configuration to use for the sidelinks and provide the reselected power savings configuration to the UEs having a sidelink with the wireless node.
1. A method for wireless communication by a wireless node, comprising:
transmitting a first sidelink power savings configuration to a first one or more user equipment (UEs), wherein the first sidelink power savings configuration is a current power savings configuration used for a second one or more UEs;
receiving from each of the first one or more UEs a proposed sidelink power savings configuration in response to the first sidelink power savings configuration;
determining a second sidelink power savings configuration to use for sidelinks between the wireless node and the first one or more UEs and the second one or more UEs;
providing the second sidelink power savings configuration to the first one or more UEs and the second one or more UEs; and
following the second sidelink power savings configuration for communicating with the first one or more UEs and the second one or more UEs.
2. The method of claim 1 , further comprising providing an indication to one or more UEs that the wireless node does not accept input from the one or more UEs for sidelink power savings configuration selection.
3. The method of claim 1 , wherein determining the second sidelink power savings configuration comprises determining the second sidelink power savings configuration based, at least in part, on the proposed sidelink power savings configuration from the first one or more UEs.
4. The method of claim 1 , wherein the proposed sidelink power savings configuration from each of the first one or more UEs is based, at least in part, on the first sidelink power savings configuration.
5. The method of claim 1 , wherein determining the second sidelink power savings configuration comprises selecting the first sidelink power savings configuration as the second sidelink power savings configuration.
6. The method of claim 1 , wherein determining the second sidelink power savings configuration selecting a proposed sidelink power savings configuration from the first one or more UEs as the second sidelink power savings configuration.
7. The method of claim 1 , wherein determining the second sidelink power savings configuration comprises determining a different sidelink power savings configuration than the first sidelink power savings configuration and the proposed sidelink power savings configuration from each of the first one or more UEs, as the second sidelink power savings configuration, wherein the determination of the different sidelink power savings configuration is based on the first sidelink power savings configuration and the proposed sidelink power savings configuration from each of the first one or more UEs.
8. The method of claim 1 , wherein the first sidelink power savings configuration comprises a configured default sidelink power savings configuration.
9. The method of claim 1 , wherein the current power savings configuration was previously determined for communicating with the second one or more UEs.
10. The method of claim 1 , further comprising receiving sidelink information from at least one of the first one or more UEs, wherein the sidelink information comprises traffic statistics, traffic patterns, quality-of-service (QoS) targets, a subset of parameters for a sidelink power savings configuration, sidelink scheduling information for the at least one of the first one or more UEs, or a combination thereof.
11. The method of claim 1 , further comprising, when another UE connects to the wireless node for sidelink communications:
redetermining a sidelink power savings configuration to use communicating with a plurality of UEs connected to the wireless node including the other UE;
providing the redetermined sidelink power savings configuration to the plurality of UEs and the other UE; and
following the redetermined sidelink power savings configuration for communicating with the plurality of UEs and the other UE.
12. The method of claim 1 , wherein:
the wireless node receives a plurality of proposed sidelink power savings configurations from a plurality of first UEs; and
determining the second sidelink power savings configuration is based on the plurality of proposed sidelink power savings configurations.
13. The method of claim 1 , wherein the second sidelink power savings configuration is a discontinuous reception (DRX) cycle configuration, the DRX cycle configuration defining one or more periods for the wireless node to monitor a physical sidelink control channel (PSCCH) for transmissions from the first one or more UEs and the second one or more UEs.
14. A method for wireless communication by a user equipment (UE), comprising:
receiving, from a wireless node over a sidelink, a first sidelink power savings configuration;
transmitting a proposed sidelink power savings configuration to the wireless node in response to the first sidelink power savings configuration;
receiving, from the wireless node over the sidelink, a second sidelink power savings configuration to use for the sidelink; and
following the second sidelink power savings configuration for the sidelink.
15. The method of claim 14 , further comprising receiving an indication from the wireless node that the wireless node does not accept input from the UE for sidelink power savings configuration selection.
16. The method of claim 14 , wherein the second sidelink power savings configuration received from the wireless node is based, at least in part, on the proposed sidelink power savings configuration from the UE.
17. The method of claim 14 , further comprising:
determining the proposed sidelink power savings configuration based at least in part on the first sidelink power savings configuration for the sidelink received from the wireless node.
18. The method of claim 14 , wherein the second sidelink power savings configuration for the sidelink received from the wireless node comprises the first sidelink power savings configuration.
19. The method of claim 14 , wherein the second sidelink power savings configuration for the sidelink received from the wireless node comprises the proposed sidelink power savings configuration.
20. The method of claim 14 , wherein the second sidelink power savings configuration for the sidelink received from the wireless node comprises a different sidelink power savings configuration, the different sidelink power savings configuration being based on the first sidelink power savings configuration and the proposed sidelink power savings configuration.
21. The method of claim 14 , further comprising transmitting sidelink information to the wireless node, wherein the sidelink information comprises traffic statistics, traffic patterns, quality-of-service (QoS) targets, a subset of parameters for a sidelink power savings configuration, sidelink scheduling information for the UE, or a combination thereof, associated with the UE.
22. The method of claim 14 , further comprising:
receiving, from the wireless node over the sidelink, a reselected sidelink power savings configuration to use for the sidelink.
23. The method of claim 14 , wherein:
the second sidelink power savings configuration is a discontinuous reception (DRX) cycle configuration, the DRX cycle configuration defining one or more periods for the wireless node to monitor a physical sidelink control channel (PSCCH); and
following the second sidelink power savings configuration comprises transmitting PSCCH to the wireless node during the one or more periods.
24. An apparatus for wireless communication, comprising:
means for transmitting a first sidelink power savings configuration to a first one or more user equipment (UEs), wherein the first sidelink power savings configuration is a current power savings configuration used for a second one or more UEs;
means for receiving from each of the first one or more UEs a proposed sidelink power savings configuration in response to the first sidelink power savings configuration;
means for determining a second sidelink power savings configuration to use for sidelinks between the apparatus and the first one or more UEs and the second one or more UEs;
means for providing the second sidelink power savings configuration to the first one or more UEs and the second one or more UEs; and
means for following the second sidelink power savings configuration for communicating with the first one or more UEs and the second one or more UEs.
25. The apparatus of claim 24 , further comprising when another UE connects to the apparatus for sidelink communications:
means for redetermining a sidelink power savings configuration to use communicating with a plurality of UEs connected to the apparatus including the other UE;
means for providing the redetermined sidelink power savings configuration to the plurality of UEs and the other UE; and
means for following the redetermined sidelink power savings configuration for communicating with the plurality of UEs and the other UE.
26. An apparatus for wireless communication, comprising:
means for receiving, from a wireless node, a first sidelink power savings configuration;
means for transmitting a proposed sidelink power savings configuration to the wireless node over a sidelink;
means for receiving, from the wireless node over the sidelink, a second sidelink power savings configuration to use for the sidelink; and
means for following the second sidelink power savings configuration for the sidelink.