Techniques for resource allocation for avoiding beam conflict in sidelink communications

1. A method of wireless communication performed by a user equipment (UE), comprising:

receiving a sidelink configuration that indicates a set of sidelink slots comprising a first subset of sidelink slots to be used for first transmissions of sidelink communications and a second subset of sidelink slots to be used for second transmissions of the sidelink communications; and

communicating based at least in part on the sidelink configuration, wherein communicating based at least in part on the sidelink configuration comprises:

receiving, using a first receive beam having a first receive beam width, a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

receiving, using a second receive beam having a second receive beam width, a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots, wherein the first receive beam width is greater than the second receive beam width.

2. The method of claim 1 , wherein the sidelink configuration explicitly indicates only the first subset of sidelink slots.

3. The method of claim 1 , wherein the sidelink configuration explicitly indicates the first subset of sidelink slots and the second subset of sidelink slots.

4. The method of claim 1 , wherein communicating based at least in part on the sidelink configuration comprises:

transmitting a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

transmitting a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots.

5. The method of claim 1 , wherein communicating based at least in part on the sidelink configuration comprises:

transmitting a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

transmitting a retransmission of the sidelink communication in a second slot of the first subset of sidelink slots.

6. The method of claim 5 , further comprising determining that a feedback communication associated with the first transmission has not been received, wherein transmitting the retransmission in the second slot of the first subset of sidelink slots comprises transmitting the retransmission based at least in part on the determination that the feedback communication has not been received.

7. The method of claim 1 , wherein communicating based at least in part on the sidelink configuration comprises:

transmitting, using a first transmit beam having a first transmit beam width, a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

transmitting, using a second transmit beam having a second transmit beam width, a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots, wherein the first transmit beam width is greater than the second transmit beam width.

8. The method of claim 7 , wherein the sidelink configuration indicates at least one of the first transmit beam width, the second transmit beam width, or a relationship between the first transmit beam width and the second transmit beam width.

9. The method of claim 1 , wherein communicating based at least in part on the sidelink configuration comprises:

receiving a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

receiving a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots.

10. The method of claim 1 , wherein the sidelink configuration indicates at least one of the first receive beam width, the second receive beam width, or a relationship between the first receive beam width and the second receive beam width.

11. A method of wireless communication performed by a transmitting sidelink user equipment (UE), comprising:

receiving, from a receiving sidelink UE, an indication of beam information associated with a beam to be used to communicate with the receiving sidelink UE; and

transmitting a sidelink communication to the receiving sidelink UE based at least in part on the beam information, wherein transmitting the sideline communication comprises:

transmitting, using a first transmit beam having a first transmit beam width, a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

transmitting, using a second transmit beam having a second transmit beam width, a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots, wherein the first transmit beam width is greater than the second transmit beam width.

12. The method of claim 11 , wherein the beam information comprises an indication of at least one of:

a slot to be used by the transmitting sidelink UE to transmit the sidelink communication to the receiving sidelink UE, wherein the slot is associated with a receive beam of the receiving sidelink UE,

a transmit beam width to be used by the transmitting sidelink UE to transmit the sidelink communication to the receiving sidelink UE, or

a relative transmit beam width to be used by the transmitting sidelink UE to transmit the sidelink communication to the receiving sidelink UE.

13. A 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 cause the UE to:

receive a sidelink configuration that indicates a set of sidelink slots comprising a first subset of sidelink slots to be used for first transmissions of sidelink communications and a second subset of sidelink slots to be used for second transmissions of the sidelink communications; and

communicate based at least in part on the sidelink configuration, wherein communicate based at least in part on the sideline configuration comprises:

receive, using a first receive beam having a first receive beam width, a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

receive, using a second receive beam having a second receive beam width, a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots, wherein the first receive beam width is greater than the second receive beam width.

14. The UE of claim 13 , wherein the sidelink configuration explicitly indicates only the first subset of sidelink slots.

15. The UE of claim 13 , wherein the one or more processors, to communicate based at least in part on the sidelink configuration, are configured to:

transmit a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

transmit a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots.

16. The UE of claim 13 , wherein the one or more processors are further configured to determine that a feedback communication associated with the first transmission has not been received, and wherein the one or more processors, to transmit the retransmission in the second slot of the first subset of sidelink slots, are configured to transmit the retransmission based at least in part on the determination that the feedback communication has not been received.

17. The UE of claim 13 , wherein the one or more processors, to communicate based at least in part on the sidelink configuration, are configured to:

transmit, using a first transmit beam having a first transmit beam width, a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

transmit, using a second transmit beam having a second transmit beam width, a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots, wherein the first transmit beam width is greater than the second transmit beam width.

18. The UE of claim 13 , wherein the one or more processors, to communicate based at least in part on the sidelink configuration, are configured to:

receive a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

receive a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots.

19. The UE of claim 13 , wherein the sidelink configuration explicitly indicates the first subset of sidelink slots and the second subset of sidelink slots.

20. The UE of claim 17 , wherein the sidelink configuration indicates at least one of the first transmit beam width, the second transmit beam width, or a relationship between the first transmit beam width and the second transmit beam width.

21. The UE of claim 13 , wherein the sidelink configuration indicates at least one of the first receive beam width, the second receive beam width, or a relationship between the first receive beam width and the second receive beam width.

22. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:

one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:

receive a sidelink configuration that indicates a set of sidelink slots comprising a first subset of sidelink slots to be used for first transmissions of sidelink communications and a second subset of sidelink slots to be used for second transmissions of the sidelink communications; and

communicate based at least in part on the sidelink configuration, wherein communicating based at least in part on the sidelink configuration comprises:

receiving, using a first receive beam having a first receive beam width, a first transmission of a sidelink communication in a first slot of the first subset of sidelink slots; and

receiving, using a second receive beam having a second receive beam width, a retransmission of the sidelink communication in a second slot of the second subset of sidelink slots, wherein the first receive beam width is greater than the second receive beam width.

23. The non-transitory computer-readable medium of claim 22 , wherein the sidelink configuration explicitly indicates only the first subset of sidelink slots.