Uplink collision handling
The present disclosure generally relates to wireless communication. In some aspects, a user equipment (UE) may identify a collision between a first uplink transmission and a second uplink transmission, wherein the first uplink transmission is a high priority uplink transmission and the second uplink transmission is a low priority uplink transmission; and cancel the second uplink transmission based at least in part on a threshold delay period, wherein the threshold delay period is based at least in part on a UE processing capability and a minimum processing timeline capability, and wherein the second uplink transmission is canceled before a first overlapping symbol of the first uplink transmission and the second uplink transmission. Numerous other aspects are provided.
1. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors configured to:
identify a collision between a first uplink transmission associated with a first uplink channel of a set of channels and a second uplink transmission associated with a second uplink channel of the set of channels, wherein:
the first uplink channel is different than the second uplink channel,
the first uplink transmission is a high priority uplink transmission and the second uplink transmission is a low priority uplink transmission, and
the set of channels further includes a third channel on which a physical downlink control channel triggering the first uplink transmission is conveyed and a fourth channel on which a physical downlink control channel triggering the second uplink transmission is conveyed; and
cancel the second uplink transmission based at least in part on a threshold delay period, wherein:
the threshold delay period is based at least in part on a UE processing capability and a minimum processing timeline capability;
the UE processing capability is based at least in part on a minimum subcarrier spacing of a set of subcarrier spacings for the set of channels that includes the first uplink channel, the second uplink channel, the third channel, and the fourth channel; and
the second uplink transmission is canceled before a first overlapping symbol of the first uplink transmission and the second uplink transmission.
2. The UE of claim 1 , wherein the UE processing capability is based at least in part on an uplink subcarrier spacing of a carrier that is to convey the second uplink transmission.
3. The UE of claim 1 , wherein the minimum processing timeline capability is an uplink shared channel processing capability and is based at least in part on one or more timing capabilities of a set of carriers associated with the first uplink transmission and the second uplink transmission.
4. The UE of claim 1 , wherein the UE processing capability is a minimum UE processing capability of a set of UE processing capabilities determined for a set of carriers on which the second uplink transmission is to be conveyed.
5. The UE of claim 1 , wherein the minimum processing timeline capability is based at least in part on a selected set of carriers.
6. The UE of claim 5 , wherein the selected set of carriers includes at least one of:
all configured carriers,
one or more carriers that are to convey the second uplink transmission, or
one or more carriers that are associated with a high priority grant, and
wherein the minimum processing timeline capability is based at least in part on configurations of an uplink processing capability and a downlink processing capability pertaining to the selected set of carriers.
7. The UE of claim 1 , wherein the UE processing capability is based at least in part on at least one of a downlink processing capability or an uplink processing capability for a carrier associated with at least one of the first uplink transmission or the second uplink transmission.
8. The UE of claim 7 , wherein the UE processing capability is based at least in part on at least one of a first UE processing capability of the first uplink channel or a second UE processing capability of the second uplink channel.
9. A method of wireless communication performed by a user equipment (UE), comprising:
identifying a collision between a first uplink transmission associated with a first uplink channel of a set of channels and a second uplink transmission associated with a second uplink channel of the set of channels, wherein:
the first uplink channel is different than the second uplink channel,
the first uplink transmission is a high priority uplink transmission and the second uplink transmission is a low priority uplink transmission, and
the set of channels further includes a third channel on which a physical downlink control channel triggering the first uplink transmission is conveyed and a fourth channel on which a physical downlink control channel triggering the second uplink transmission is conveyed; and
canceling the second uplink transmission based at least in part on a threshold delay period, wherein:
the threshold delay period is based at least in part on a UE processing capability and a minimum processing timeline capability;
the UE processing capability is based at least in part on a minimum subcarrier spacing of a set of subcarrier spacings for the set of channels that includes the first uplink channel, the second uplink channel, the third channel, and the fourth channel; and
the second uplink transmission is canceled before a first overlapping symbol of the first uplink transmission and the second uplink transmission.
10. The method of claim 9 , wherein the UE processing capability is based at least in part on an uplink subcarrier spacing of a carrier that is to convey the second uplink transmission.
11. The method of claim 9 , wherein the minimum processing timeline capability is an uplink shared channel processing capability and is based at least in part on one or more timing capabilities of a set of carriers associated with the first uplink transmission and the second uplink transmission.
12. The method of claim 9 , wherein the UE processing capability is a minimum UE processing capability of a set of UE processing capabilities determined for a set of carriers on which the second uplink transmission is to be conveyed.
13. The method of claim 9 , wherein the minimum processing timeline capability is based at least in part on a selected set of carriers.
14. The method of claim 13 , wherein the selected set of carriers includes at least one of:
all configured carriers,
one or more carriers that are to convey the second uplink transmission, or
one or more carriers that are associated with a high priority grant, and
wherein the minimum processing timeline capability is based at least in part on configurations of an uplink processing capability and a downlink processing capability pertaining to the selected set of carriers.
15. The method of claim 9 , wherein the UE processing capability is based at least in part on at least one of a downlink processing capability or an uplink processing capability for a carrier associated with at least one of the first uplink transmission or the second uplink transmission.
16. The method of claim 15 , wherein the UE processing capability is based at least in part on at least one of a first UE processing capability of the first uplink channel or a second UE processing capability of the second uplink channel.
17. 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:
identify a collision between a first uplink transmission associated with a first uplink channel of a set of channels and a second uplink transmission associated with a second uplink channel of the set of channels, wherein:
the first uplink channel is different than the second uplink channel,
the first uplink transmission is a high priority uplink transmission and the second uplink transmission is a low priority uplink transmission, and
the set of channels further includes a third channel on which a physical downlink control channel triggering the first uplink transmission is conveyed and a fourth channel on which a physical downlink control channel triggering the second uplink transmission is conveyed; and
cancel the second uplink transmission based at least in part on a threshold delay period, wherein:
the threshold delay period is based at least in part on a UE processing capability and a minimum processing timeline capability;
the UE processing capability is based at least in part on a minimum subcarrier spacing of a set of subcarrier spacings for the set of channels that includes the first uplink channel, the second uplink channel, the third channel, and the fourth channel; and
the second uplink transmission is canceled before a first overlapping symbol of the first uplink transmission and the second uplink transmission.
18. The non-transitory computer-readable medium of claim 17 , wherein the UE processing capability is based at least in part on an uplink subcarrier spacing of a carrier that is to convey the second uplink transmission.
19. The non-transitory computer-readable medium of claim 17 , wherein the minimum processing timeline capability is an uplink shared channel processing capability and is based at least in part on one or more timing capabilities of a set of carriers associated with the first uplink transmission and the second uplink transmission.
20. The non-transitory computer-readable medium of claim 17 , wherein the UE processing capability is a minimum UE processing capability of a set of UE processing capabilities determined for a set of carriers on which the second uplink transmission is to be conveyed.
21. The non-transitory computer-readable medium of claim 17 , wherein the minimum processing timeline capability is based at least in part on a selected set of carriers.
22. An apparatus for wireless communication, comprising:
means for identifying a collision between a first uplink transmission associated with a first uplink channel of a set of channels and a second uplink transmission associated with a second uplink channel of the set of channels, wherein:
the first uplink channel is different than the second uplink channel,
the first uplink transmission is a high priority uplink transmission and the second uplink transmission is a low priority uplink transmission, and
the set of channels further includes a third channel on which a physical downlink control channel triggering the first uplink transmission is conveyed and a fourth channel on which a physical downlink control channel triggering the second uplink transmission is conveyed; and
means for canceling the second uplink transmission based at least in part on a threshold delay period, wherein:
the threshold delay period is based at least in part on an apparatus processing capability and a minimum processing timeline capability;
the apparatus processing capability is based at least in part on a minimum subcarrier spacing of a set of subcarrier spacings for the set of channels that includes the first uplink channel, the second uplink channel, the third channel, and the fourth channel; and
the second uplink transmission is canceled before a first overlapping symbol of the first uplink transmission and the second uplink transmission.
23. The apparatus of claim 22 , wherein the apparatus processing capability is based at least in part on an uplink subcarrier spacing of a carrier that is to convey the second uplink transmission.
24. The apparatus of claim 22 , wherein the minimum processing timeline capability is an uplink shared channel processing capability and is based at least in part on one or more timing capabilities of a set of carriers associated with the first uplink transmission and the second uplink transmission.
25. The apparatus of claim 22 , wherein the apparatus processing capability is a minimum apparatus processing capability of a set of apparatus processing capabilities determined for a set of carriers on which the second uplink transmission is to be conveyed.
26. The apparatus of claim 22 , wherein the minimum processing timeline capability is based at least in part on a selected set of carriers.