Aggregation for sidelink communication
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform blind decoding, for sidelink control information (SCI) in resources in one or more sub-channels of a sidelink resource pool, based at least in part on an aggregation level or a resource aggregation configuration. The UE may receive the SCI based at least in part on performing the blind decoding for the SCI. Numerous other aspects are described.
1. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
perform blind decoding, for sidelink control information (SCI) in resources in one or more sub-channels of a sidelink resource pool, based at least in part on an aggregation level or a resource aggregation configuration; and
receive the SCI based at least in part on performing the blind decoding for the SCI.
2. The UE of claim 1 , wherein the resources are in a single sub-channel of the one or more sub-channels.
3. The UE of claim 2 , wherein the resources are located in the single sub-channel according to an aggregation level pattern.
4. The UE of claim 1 , wherein the resource aggregation configuration identifies a quantity of resource blocks and a quantity of symbols associated with the resources.
5. The UE of claim 1 , wherein the resources include a single resource unit repeated in multiple sub-channels of the one or more sub-channels, and
wherein the single resource unit repeated in the multiple sub-channels is associated with a same resource location in the multiple sub-channels.
6. The UE of claim 1 , wherein the aggregation level is not greater than a quantity of sub-channels used for a physical sidelink shared channel communication associated with the SCI.
7. The UE of claim 1 , wherein the one or more processors are further configured to receive information that identifies the aggregation level.
8. The UE of claim 1 , wherein the aggregation level is greater than a quantity of sub-channels, used for a physical sidelink shared channel (PSSCH) communication associated with the SCI, by at least one sub-channel.
9. The UE of claim 8 , wherein the one or more processors are further configured to:
receive an indication that the at least one sub-channel is reserved; and
receive information identifying a resource allocation for the PSSCH communication that does not include the at least one sub-channel.
10. The UE of claim 1 , wherein the resources include one or more resource units in multiple sub-channels of the one or more sub-channels.
11. The UE of claim 10 , wherein the resources are located in the multiple sub-channels according to an aggregation level pattern, and
wherein the aggregation level pattern is based at least in part on a configuration for the sidelink resource pool.
12. The UE of claim 1 , wherein the blind decoding for the SCI is performed for a plurality of aggregation levels or a plurality of resource aggregation configurations in each of the one or more sub-channels.
13. The UE of claim 1 , wherein the blind decoding for the SCI is performed in one or more search spaces for the one or more sub-channels.
14. The UE of claim 1 , wherein the SCI is a first SCI received in a physical sidelink control channel or a second SCI received in a physical sidelink shared channel.
15. The UE of claim 14 , wherein the first SCI is associated with a first aggregation level, and the second SCI is associated with a second aggregation level that is based at least in part on at least one of the first aggregation level or a modulation and coding scheme for the physical sidelink shared channel.
16. A UE for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
map sidelink control information (SCI) to resources, in one or more sub-channels of a sidelink resource pool, based at least in part on an aggregation level or a resource aggregation configuration; and
transmit the SCI in the resources.
17. The UE of claim 16 , wherein the resources are in a single sub-channel of the one or more sub-channels.
18. The UE of claim 17 , wherein the resources are located in the single sub-channel according to an aggregation level pattern.
19. The UE of claim 16 , wherein the resource aggregation configuration identifies a quantity of resource blocks and a quantity of symbols associated with the resources.
20. The UE of claim 16 , wherein the resources include a single resource unit repeated in multiple sub-channels of the one or more sub-channels, and
wherein the single resource unit repeated in the multiple sub-channels is associated with a same resource location in the multiple sub-channels.
21. The UE of claim 16 , wherein the aggregation level is not greater than a quantity of sub-channels used for a physical sidelink shared channel communication associated with the SCI.
22. The UE of claim 16 , wherein the one or more processors are further configured to receive information that identifies the aggregation level.
23. The UE of claim 16 , wherein the aggregation level is greater than a quantity of sub-channels, used for a physical sidelink shared channel (PSSCH) communication associated with the SCI, by at least one sub-channel.
24. The UE of claim 23 , wherein the one or more processors are further configured to:
receive or transmit an indication that the at least one sub-channel is reserved; and
receive or transmit information identifying a resource allocation for the PSSCH communication that does not include the at least one sub-channel.
25. The UE of claim 16 , wherein the resources include one or more resource units in multiple sub-channels of the one or more sub-channels.
26. The UE of claim 25 , wherein the resources are located in the multiple sub-channels according to an aggregation level pattern, and
wherein the aggregation level pattern is based at least in part on a configuration for the sidelink resource pool.
27. The UE of claim 16 , wherein the SCI is a first SCI transmitted in a physical sidelink control channel or a second SCI transmitted in a physical sidelink shared channel.
28. The UE of claim 27 , wherein the first SCI is associated with a first aggregation level, and the second SCI is associated with a second aggregation level that is based at least in part on at least one of the first aggregation level or a modulation and coding scheme for the physical sidelink shared channel.
29. A method of wireless communication performed by a user equipment (UE), comprising:
performing blind decoding, for sidelink control information (SCI) in resources in one or more sub-channels of a sidelink resource pool, based at least in part on an aggregation level or a resource aggregation configuration; and
receiving the SCI based at least in part on performing the blind decoding for the SCI.
30. A method of wireless communication performed by a user equipment (UE), comprising:
mapping sidelink control information (SCI) to resources, in one or more sub-channels of a sidelink resource pool, based at least in part on an aggregation level or a resource aggregation configuration; and
transmitting the SCI in the resources.