Link specific guard interval
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive first configuration information indicating a first guard interval associated with sidelink communications. The UE may transmit, to a base station and another UE, a first sidelink communication using the first guard interval. The UE may transmit, to the base station and using a second guard interval having a second length that is different from a first length of the first guard interval, an uplink communication. 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:
receive first configuration information indicating a first guard interval associated with sidelink communications;
transmit, to a base station and an other UE, a first sidelink communication using the first guard interval; and
transmit, to the base station and using a second guard interval having a second length that is different from a first length of the first guard interval, an uplink communication.
2. The UE of claim 1 , wherein the one or more processors are further configured to: receive, from the base station, second configuration information indicating the second guard interval.
3. The UE of claim 1 , wherein the one or more processors are further configured to: transmit, to at least one of the base station or the other UE, a second sidelink communication using a third guard interval that is different from the first guard interval.
4. The UE of claim 3 , wherein the first sidelink communication is a physical sidelink shared channel (PSSCH) communication, and the second sidelink communication is a physical sidelink feedback channel (PSFCH) communication.
5. The UE of claim 3 , wherein the first sidelink communication is a physical sidelink feedback channel (PSFCH) communication, and the second sidelink communication is a physical sidelink shared channel (PSSCH) communication.
6. The UE of claim 3 , wherein the first configuration information further indicates the third guard interval.
7. The UE of claim 1 , wherein the second length of the second guard interval is longer than the first length of the first guard interval.
8. A base station for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
receive, from a first UE, a first sidelink communication using a first guard interval;
receive, from a second UE, an uplink communication using a second guard interval,
a second length of the second guard interval being different from a first length of the first guard interval; and
process the first sidelink communication and the uplink communication in a same fast Fourier transform window.
9. The base station of claim 8 , wherein the second length of the second guard interval is longer than the first length of the first guard interval.
10. The base station of claim 8 , wherein the one or more processors are further configured to:
transmit, to the first UE, first configuration information indicating the first guard interval.
11. The base station of claim 10 , wherein the one or more processors are further configured to:
receive, from the first UE, a reference signal; and
determine the first guard interval based at least in part on the reference signal.
12. The base station of claim 8 , wherein the one or more processors are further configured to:
transmit, to the second UE, second configuration information indicating the second guard interval.
13. The base station of claim 8 , wherein the one or more processors are further configured to:
receive, from the first UE, a second sidelink communication using a third guard interval that is different from the first guard interval.
14. The base station of claim 13 , wherein the first sidelink communication is a physical sidelink shared channel (PSSCH) communication, and the second sidelink communication is a physical sidelink feedback channel (PSFCH) communication.
15. The base station of claim 13 , wherein the first sidelink communication is a physical sidelink feedback channel (PSFCH) communication, and the second sidelink communication is a physical sidelink shared channel (PSSCH) communication.
16. The base station of claim 13 , wherein the one or more processors are further configured to:
transmit, to the first UE, first configuration information indicating the first guard interval and the third guard interval.
17. A wireless device for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
receive, from a first UE, a first sidelink communication using a first guard interval;
receive, from a second UE, a second sidelink communication using a second guard interval,
a second length of the second guard interval being different from a first length of the first guard interval; and
process the first sidelink communication and the second sidelink communication in a same fast Fourier transform window.
18. The wireless device of claim 17 , wherein the first sidelink communication comprises one of a unicast transmission, a groupcast transmission, or a broadcast transmission, and
wherein the second sidelink communication comprises a different one of the unicast transmission, the groupcast transmission, or the broadcast transmission.
19. The wireless device of claim 17 , wherein the second length of the second guard interval is longer than the first length of the first guard interval.
20. The wireless device of claim 17 , wherein the one or more processors are further configured to:
transmit, to the first UE, first configuration information indicating the first guard interval, and
wherein the second guard interval is a preconfigured guard interval.
21. The wireless device of claim 20 , wherein the one or more processors are further configured to:
receive, from the first UE, a reference signal; and
determine the first guard interval based at least in part on the reference signal.
22. The wireless device of claim 21 , wherein the one or more processors, to determine the first guard interval, are configured to:
determine a measure of distance associated with the first UE based at least in part on the reference signal; and
determine the first guard interval based at least in part on the measure of distance.
23. The wireless device of claim 17 , wherein the one or more processors are further configured to:
transmit, to the second UE, second configuration information indicating the second guard interval.
24. The wireless device of claim 17 , wherein the one or more processors are further configured to:
receive, from the first UE, a third sidelink communication using a third guard interval having a third length that is different from the first length of the first guard interval.
25. The wireless device of claim 24 , wherein the first sidelink communication is a physical sidelink shared channel (PSSCH) communication, and the third sidelink communication is a physical sidelink feedback channel (PSFCH) communication.
26. The wireless device of claim 24 , wherein the first sidelink communication is a physical sidelink feedback channel (PSFCH) communication, and the third sidelink communication is a physical sidelink shared channel (PSSCH) communication.
27. The wireless device of claim 24 , wherein the one or more processors are further configured to:
transmit, to the first UE, first configuration information indicating the first guard interval and the third guard interval.
28. A method of wireless communication performed by a base station, comprising:
receiving, from a first UE, a first sidelink communication using a first guard interval;
receiving, from a second UE, an uplink communication using a second guard interval,
a second length of the second guard interval being different from a first length of the first guard interval; and
processing the first sidelink communication and the uplink communication in a same fast Fourier transform window.
29. The method of claim 28 , wherein the second length of the second guard interval is longer than the first length of the first guard interval.
30. The method of claim 28 , further comprising:
receiving, from the first UE, a reference signal; and
determining the first guard interval based at least in part on the reference signal.