Sidelink collision handling for inter user equipment coordination
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between an inter-UE coordination communication to be transmitted or received by the UE and another communication. The UE may perform at least one of the inter-UE coordination communication or the other communication based at least in part on a resolution of the collision based at least in part on a priority rule. Numerous other aspects are provided.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured, individually or collectively, to:
identify a collision between an inter-UE coordination communication to be transmitted by the UE and a second communication, wherein the inter-UE coordination communication corresponds to a set of sidelink resources for resource allocation;
perform a prioritized transmission, of the inter-UE coordination communication or the second communication, based at least in part on a resolution of the collision, wherein the resolution is based at least in part on a priority of the inter-UE coordination communication, and wherein the priority of the inter-UE coordination communication is based at least in part on the inter-UE coordination communication being triggered by an inter-UE coordination request from another UE, and wherein the priority of the inter-UE coordination communication is equal to a priority level of the inter-UE coordination request; and
perform a deprioritized transmission, of the inter-UE coordination communication or the second communication, using a power control parameter based at least in part on the resolution, or drop the deprioritized transmission.
2 . The apparatus of claim 1 , wherein the second communication is a sidelink transmission of the UE.
3 . The apparatus of claim 1 , wherein the second communication is prioritized over the inter-UE coordination communication based at least in part on a priority of the second communication.
4 . The apparatus of claim 1 , wherein the inter-UE coordination communication is prioritized over the second communication based at least in part on the priority of the inter-UE coordination communication.
5 . The apparatus of claim 1 , wherein the resolution is based at least in part on respective priority levels associated with the inter-UE coordination communication and the second communication.
6 . The apparatus of claim 5 , wherein the resolution is based at least in part on comparing one or more of the respective priority levels to a threshold priority level, wherein the threshold priority level is based at least in part on whether a priority level for an uplink communication or a downlink communication is configured.
7 . The apparatus of claim 5 , wherein a priority level of the second communication, of the respective priority levels is based at least in part on whether the second communication comprises a physical sidelink feedback channel that is associated with a reception of groupcast data.
8 . The apparatus of claim 5 , wherein a priority level of the second communication, of the respective priority levels, is based at least in part on whether the second communication is associated with a unicast communication, a groupcast communication, or a broadcast communication.
9 . The apparatus of claim 5 , wherein a priority level of the second communication, of the respective priority levels, is based at least in part on whether the inter-UE coordination communication and the second communication are associated with a same user or different users.
10 . The apparatus of claim 1 , wherein the second communication is an uplink communication.
11 . The apparatus of claim 1 , wherein the one or more processors are configured to:
receive information indicating a priority rule based at least in part on a configuration specific to the UE, wherein the priority rule is based at least in part on the priority of the inter-UE coordination communication.
12 . The apparatus of claim 1 , wherein the power control parameter is a first power control parameter, and wherein the one or more processors, to perform the prioritized transmission, are configured to:
perform the prioritized transmission using a second power control parameter based at least in part on the resolution.
13 . An apparatus for wireless communication at a base station, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured, individually or collectively, to:
identify a priority rule, of a plurality of priority rules, for resolving a collision between an inter-user equipment (inter-UE) coordination communication to be transmitted by a UE and a second communication, wherein the priority rule includes a configuration corresponding to one or more power control parameters for at least one of the inter-UE coordination communication or the second communication, wherein the priority rule indicates that a priority of the inter-UE coordination communication is based at least in part on the inter-UE coordination communication being triggered by an inter-UE coordination request from another UE, and wherein the priority of the inter-UE coordination communication is equal to a priority level of the inter-UE coordination request; and
transmit an indication of the priority rule using downlink control information (DCI) signaling, radio resource control (RRC) signaling, or medium access control (MAC) signaling.
14 . The apparatus of claim 13 , wherein the second communication is a sidelink transmission of the UE.
15 . The apparatus of claim 13 , wherein the priority rule is identified based at least in part on whether the inter-UE coordination communication is triggered by a relay associated with the base station.
16 . The apparatus of claim 15 , wherein the priority rule indicates that an inter-UE coordination report triggered by the base station is to be prioritized over the second communication.
17 . The apparatus of claim 13 , wherein the second communication is an uplink communication.
18 . The apparatus of claim 13 , wherein the priority rule is based at least in part on a configuration specific to the UE.
19 . A method of wireless communication performed by a user equipment (UE), comprising:
identifying a collision between an inter-UE coordination communication to be transmitted by the UE and a second communication, wherein the inter-UE coordination communication corresponds to a set of sidelink resources for resource allocation;
performing a prioritized transmission, of the inter-UE coordination communication or the second communication, based at least in part on a resolution of the collision, wherein the resolution is based at least in part on a priority rule, wherein the priority rule indicates that a priority of the inter-UE coordination communication is based at least in part on the inter-UE coordination communication being triggered by an inter-UE coordination request from another UE, and wherein the priority of the inter-UE coordination communication is equal to a priority level of the inter-UE coordination request; and
performing a deprioritized -transmission, of the inter-UE coordination communication or the second communication, using a power control parameter based at least in part on the resolution, or dropping the deprioritized-communication transmission.
20 . A method of wireless performed by a base station, comprising:
identifying a priority rule, of a plurality of priority rules, for resolving a collision between an inter-user equipment (inter-UE) coordination communication to be transmitted by a UE and a second communication, wherein the priority rule includes a configuration corresponding to one or more power control parameters for at least one of the inter-UE coordination communication or the second communication, wherein the priority rule indicates that a priority of the inter-UE coordination communication is based at least in part on the inter-UE coordination communication being triggered by an inter-UE coordination request from another UE, and wherein the priority of the inter-UE coordination communication is equal to a priority level of the inter-UE coordination request; and
transmitting an indication of the priority rule using downlink control information (DCI) signaling, radio resource control (RRC) signaling, or medium access control (MAC) signaling.
21 . The method of claim 20 , wherein the second communication is a sidelink transmission of the UE.
22 . The method of claim 19 , wherein a priority level of the second communication is based at least in part on whether the second communication comprises a physical sidelink feedback channel, and wherein the priority of the inter-UE coordination communication is based at least in part on the priority level of the second communication.
23 . The method of claim 19 , wherein the resolution of the collision is based at least in part on a simultaneous transmission or reception capability of the UE.
24 . The method of claim 19 , wherein the inter-UE coordination communication comprises a coordination report indicating a set of available resources for sidelink communication.
25 . The apparatus of claim 1 , wherein the inter-UE coordination communication comprises a coordination report indicating a set of available resources for sidelink communication.
26 . The apparatus of claim 13 , wherein the inter-UE coordination communication comprises a coordination report indicating a set of available resources for sidelink communication.