Techniques and apparatuses for variable timing adjustment granularity
Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine at least one of a granularity or range of a timing adjustment value based at least in part on at least one of a timing adjustment command indicating the granularity, configuration information indicating the granularity, information regarding a communication, carrier, or band associated with the user equipment, or a combination thereof; and/or perform timing adjustment based at least in part on at least one of the granularity or the range of the timing adjustment value. Numerous other aspects are provided.
1. A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors coupled with the one or more memories and configured to cause the UE to:
determine a respective granularity of a timing adjustment value for each of a plurality of carriers based at least in part on a timing adjustment command indicating the timing adjustment value for a timing adjustment group (TAG) of the carriers that share the timing adjustment command, wherein the respective granularity is variable based at least in part on a numerology associated with a cell of the TAG; and
perform a timing adjustment based at least in part on the respective granularity of the timing adjustment value, wherein the timing adjustment command is interpreted differently for a first cell of the TAG than for a second cell of the TAG based at least in part on respective numerologies of the first cell and the second cell.
2. The UE of claim 1 , wherein the timing adjustment command indicates a delay for execution of the timing adjustment.
3. The UE of claim 1 , wherein the one or more processors are configured to cause the UE to:
determine a delay for execution of the timing adjustment based at least in part on a carrier associated with the UE.
4. The UE of claim 1 , wherein a performance parameter for the timing adjustment is based at least in part on a particular fraction of the respective granularity of the timing adjustment value.
5. The UE of claim 1 , wherein a performance parameter for the timing adjustment is based at least in part on at least one of:
the respective granularity of the timing adjustment value,
a numerology associated with the UE,
a carrier associated with the UE,
a band associated with UE, or
a capability of the UE.
6. The UE of claim 1 , wherein the one or more processors, to perform the timing adjustment, are configured to cause the UE to:
perform the timing adjustment after performance of an initial access procedure.
7. The UE of claim 1 , wherein the one or more processors, to perform the timing adjustment, are configured to cause the UE to:
perform the timing adjustment based at least in part on reception of a random access response.
8. The UE of claim 1 , wherein the one or more processors, to perform the timing adjustment, are configured to cause the UE to:
perform the timing adjustment after a delay that is based at least in part on a capability of the UE, wherein the delay is between signaling of the timing adjustment command and application of the timing adjustment.
9. A method of wireless communication performed by a user equipment (UE), comprising:
determining a respective granularity of a timing adjustment value for each of a plurality of carriers based at least in part on a timing adjustment command indicating the timing adjustment value for a timing adjustment group (TAG) of the carriers that share the timing adjustment command, wherein the respective granularity is variable based at least in part on a numerology associated with a cell of the TAG; and
performing a timing adjustment based at least in part on the respective granularity of the timing adjustment value, wherein the timing adjustment command is interpreted differently for a first cell of the TAG than for a second cell of the TAG based at least in part on respective numerologies of the first cell and the second cell.
10. The method of claim 9 , wherein the timing adjustment command indicates a delay for execution of the timing adjustment.
11. The method of claim 9 , further comprising:
determining a delay for execution of the timing adjustment based at least in part on a carrier associated with the UE.
12. The method of claim 9 , wherein a performance parameter for the timing adjustment is based at least in part on a particular fraction of the respective granularity of the timing adjustment value.
13. The method of claim 9 , wherein a performance parameter for the timing adjustment is based at least in part on at least one of:
the respective granularity of the timing adjustment value,
a numerology associated with the UE,
a carrier associated with the UE,
a band associated with UE, or
a capability of the UE.
14. The method of claim 9 , wherein the timing adjustment is performed after an initial access procedure is performed.
15. The method of claim 9 , wherein the timing adjustment is performed based at least in part on receiving a random access response.
16. The method of claim 9 , wherein the timing adjustment is performed after a delay that is based at least in part on a capability of the UE, wherein the delay is between signaling of the timing adjustment command and application of the timing adjustment.
17. A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to:
determine a respective granularity of a timing adjustment value for each of a plurality of carriers based at least in part on a timing adjustment command indicating the timing adjustment value for a timing adjustment group (TAG) of the carriers that share the timing adjustment command, wherein the respective granularity is variable based at least in part on a numerology associated with a cell of the TAG; and
perform a timing adjustment based at least in part on the respective granularity of the timing adjustment value, wherein the timing adjustment command is interpreted differently for a first cell of the TAG than for a second cell of the TAG based at least in part on respective numerologies of the first cell and the second cell.
18. The non-transitory computer-readable medium of claim 17 , wherein the timing adjustment command indicates a delay for execution of the timing adjustment.
19. The non-transitory computer-readable medium of claim 17 , wherein a performance parameter for the timing adjustment is based at least in part on a particular fraction of the respective granularity of the timing adjustment value.
20. The non-transitory computer-readable medium of claim 17 , wherein a performance parameter for the timing adjustment is based at least in part on at least one of:
the respective granularity of the timing adjustment value,
a numerology associated with the UE,
a carrier associated with the UE,
a band associated with UE, or
a capability of the UE.