Sidelink control signaling with transmit beam indications
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first UE may receive, from a second UE, resource reserving sidelink control information that indicates a transmit beam of the second UE and a sidelink resource of the second UE. The first UE may transmit data on the sidelink resource of the second UE using a transmit beam of the first UE that does not spatially overlap with the transmit beam of the second UE. Numerous other aspects are provided.
1. A first user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
receive, from a second UE, resource reserving sidelink control information (RR-SCI) that indicates a transmit beam of the second UE, and a sidelink resource of the second UE, wherein the RR-SCI is associated with a first carrier, and the RR-SCI includes a cross carrier resource reservation to indicate a resource reservation for sidelink resources associated with a second carrier; and
transmit data on the sidelink resource, on the second carrier, of the second UE using a transmit beam of the first UE that does not spatially overlap with the transmit beam of the second UE.
2. The first UE of claim 1 , wherein the one or more processors, when receiving the RR-SCI, are configured to:
receive the RR-SCI from the second UE on the first carrier.
3. The first UE of claim 1 , wherein the transmit beam of the second UE is a first transmit beam of the second UE, wherein the RR-SCI indicates a second transmit beam of the second UE, and wherein the first transmit beam of the second UE is associated with a first direction and the second transmit beam of the second UE is associated with a second direction that is opposite to the first direction.
4. The first UE of claim 1 , wherein the first carrier corresponds to a low band anchor carrier, and the second carrier corresponds to a high band secondary carrier.
5. The first UE of claim 1 , wherein the RR-SCI that includes the cross carrier resource reservation includes one or more of: a transmit beam index associated with the second carrier, a carrier index associated with the second carrier, or a slot offset between the RR-SCI and a first transmission in the second carrier.
6. The first UE of claim 1 , wherein the RR-SCI includes an SCI-1 carrying a reservation periodicity, and the RR-SCI includes an SCI-2 with the cross carrier resource reservation.
7. The first UE of claim 6 , wherein the SCI-1 comprises an indication of one or more resources for retransmission.
8. The first UE of claim 6 , wherein the SCI-1 is omni-directional.
9. A method of wireless communication at a first user equipment (UE), comprising:
receiving, from a second UE, resource reserving sidelink control information (RR-SCI) that indicates a transmit beam of the second UE, and a sidelink resource of the second UE, wherein the RR-SCI is associated with a first carrier, and the RR-SCI includes a cross carrier resource reservation to indicate a resource reservation for sidelink resources associated with a second carrier; and
transmitting data on the sidelink resource, on the second carrier, of the second UE using a transmit beam of the first UE that does not spatially overlap with the transmit beam of the second UE.
10. The method of claim 9 , further comprising:
receiving the RR-SCI from the second UE on the first carrier.
11. The method of claim 9 , wherein the transmit beam of the second UE is a first transmit beam of the second UE, wherein the RR-SCI indicates a second transmit beam of the second UE, and wherein the first transmit beam of the second UE is associated with a first direction and the second transmit beam of the second UE is associated with a second direction that is opposite to the first direction.
12. The method of claim 9 , wherein the first carrier corresponds to a low band anchor carrier, and the second carrier corresponds to a high band secondary carrier.
13. The method of claim 9 , wherein the RR-SCI that includes the cross carrier resource reservation includes one or more of: a transmit beam index associated with the second carrier, a carrier index associated with the second carrier, or a slot offset between the RR-SCI and a first transmission in the second carrier.
14. The method of claim 9 , wherein the RR-SCI includes an SCI-1 carrying a reservation periodicity, and the RR-SCI includes an SCI-2 with the cross carrier resource reservation.
15. The method of claim 14 , wherein the SCI-1 comprises an indication of one or more resources for retransmission.
16. The method of claim 14 , wherein the SCI-1 is omni-directional.
17. A first user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
transmit, to a second UE, resource reserving sidelink control information (RR-SCI) that indicates a transmit beam of the second UE, and a sidelink resource of the second UE, wherein the RR-SCI is associated with a first carrier, and the RR-SCI includes a cross carrier resource reservation to indicate a resource reservation for sidelink resources associated with a second carrier; and
receive data on the sidelink resource, on the second carrier, of the second UE using a transmit beam of the first UE that does not spatially overlap with the transmit beam of the second UE.
18. The first UE of claim 17 , wherein the one or more processors, when transmitting the RR-SCI, are configured to:
receive the RR-SCI from the second UE on the second carrier.
19. The first UE of claim 17 , wherein the RR-SCI that includes the cross carrier resource reservation includes one or more of: a transmit beam index associated with the second carrier, a carrier index associated with the second carrier, or a slot offset between the RR-SCI and a first transmission in the second carrier.
20. The first UE of claim 17 , wherein the RR-SCI includes an SCI-1 carrying a reservation periodicity, and the RR-SCI includes an SCI-2 with the cross carrier resource reservation.