Multiple downlink control information (DCI) message handling for multiple control resource set (CORESET) groups
This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for multiple downlink control information (DCI) message handling for multiple control resource set (CORESET) groups. In one aspect, a user equipment (UE) may provide separate or joint feedback for data messages received from different CORESET groups. In some examples, the UE may be configured with code block group (CBG)-based transmissions for a component carrier (CC) or a CORESET group in a CC. If implementing a dynamic codebook, the UE may track separate transport block (TB)-based and CBG-based downlink assignment indexes (DAIs) for each CORESET group or may track joint TB-based and CBG-based DAIs across the set of CORESET groups to handle the CBG configuration. Additionally, or alternatively, if implementing a semi-static codebook, the UE may apply skipping rules across the set of CORESET groups or separately for each CORESET group to reduce signaling overhead.
1. A user equipment (UE) for wireless communications, comprising:
a processing system; and
an interface configured to:
obtain a configuration for a downlink control channel monitoring occasion comprising a plurality of control resource sets (CORESETs), each CORESET being associated with one of a plurality of CORESET groups and one of a plurality of downlink component carriers, wherein the configuration is associated with a semi-static feedback codebook;
obtain a downlink message associated with a feedback procedure in a first CORESET of the downlink control channel monitoring occasion corresponding to a first CORESET group, in a first semi-persistent scheduling occasion corresponding to the first CORESET group, or in both; and
output a feedback message comprising a one-bit acknowledgement indication for the first CORESET group associated with the downlink message and the configuration for the downlink control channel monitoring occasion comprising the plurality of CORESETs, wherein inclusion of the one-bit acknowledgement indication in the feedback message is in accordance with a first skipping rule for skipping feedback, the first skipping rule associated with the downlink message being scheduled via a fallback downlink control information message with a counter downlink assignment index value of one.
2. The UE of claim 1 , wherein the downlink message comprises a first downlink message, and wherein the interface is further configured to:
obtain, in a second CORESET of the downlink control channel monitoring occasion corresponding to a second CORESET group, in a second semi-persistent scheduling occasion corresponding to the second CORESET group, or in both, a second downlink message associated with the feedback procedure.
3. The UE of claim 2 , wherein the interface is further configured to:
output separate hybrid automatic repeat request feedback for the first downlink message corresponding to the first CORESET group and the second downlink message corresponding to the second CORESET group associated with the configuration.
4. The UE of claim 3 , wherein the feedback message comprises a first hybrid automatic repeat request message corresponding to the first CORESET group, and wherein the processing system is configured to:
apply the first skipping rule for the first CORESET group, wherein the first hybrid automatic repeat request message comprises the one-bit acknowledgement indication for the first CORESET group associated with the first skipping rule; and
wherein the interface is further configured to:
output a second hybrid automatic repeat request message in a second uplink resource based at least in part on determining whether to apply a second skipping rule for the second CORESET group, wherein the first hybrid automatic repeat request message is outputted in a first uplink resource different from the second uplink resource.
5. The UE of claim 2 , wherein the interface is further configured to:
output joint hybrid automatic repeat request feedback for the first downlink message corresponding to the first CORESET group and the second downlink message corresponding to the second CORESET group associated with the configuration.
6. The UE of claim 5 , wherein the processing system is configured to:
apply the first skipping rule for the first CORESET group, wherein the feedback message comprises the one-bit acknowledgement indication for the first CORESET group associated with the first skipping rule.
7. The UE of claim 6 , wherein the processing system is further configured to:
apply a second skipping rule for the second CORESET group associated with the second downlink message, wherein the feedback message comprises a second one-bit acknowledgement indication for the second CORESET group associated with the second skipping rule.
8. The UE of claim 6 , wherein the processing system is further configured to:
selectively apply a second skipping rule for the second CORESET group associated with the second downlink message, wherein the feedback message is associated with the semi-static feedback codebook.
9. The UE of claim 1 , wherein the processing system is configured to:
apply the first skipping rule associated with the downlink message comprising a semi-persistent scheduling release, a semi-persistent scheduled data reception, or a combination thereof, wherein the feedback message is associated with the first skipping rule.
10. The UE of claim 9 , wherein the downlink message is an only downlink message associated with the feedback message based at least in part on application of the first skipping rule.
11. A method for wireless communications at a user equipment (UE), comprising:
receiving a configuration for a downlink control channel monitoring occasion comprising a plurality of control resource sets (CORESETs), each CORESET being associated with one of a plurality of CORESET groups and one of a plurality of downlink component carriers, wherein the configuration is associated with a semi-static feedback codebook; and
receiving a downlink message associated with a feedback procedure in a first CORESET of the downlink control channel monitoring occasion corresponding to a first CORESET group, in a first semi-persistent scheduling occasion corresponding to the first CORESET group, or in both; and
transmitting a feedback message comprising a one-bit acknowledgement indication for the first CORESET group associated with the downlink message and the configuration for the downlink control channel monitoring occasion comprising the plurality of CORESETs, wherein inclusion of the one-bit acknowledgement indication in the feedback message is in accordance with a first skipping rule for skipping feedback, the first skipping rule associated with the downlink message being scheduled via a fallback downlink control information message with a counter downlink assignment index value of one.
12. The method of claim 11 , wherein the downlink message comprises a first downlink message, the method further comprising:
receiving, in a second CORESET of the downlink control channel monitoring occasion corresponding to a second CORESET group, in a second semi-persistent scheduling occasion corresponding to the second CORESET group, or in both, a second downlink message associated with the feedback procedure.
13. The method of claim 12 , further comprising:
transmitting separate hybrid automatic repeat request feedback for the first downlink message corresponding to the first CORESET group and the second downlink message corresponding to the second CORESET group associated with the configuration.
14. The method of claim 13 , wherein the feedback message comprises a first hybrid automatic repeat request message corresponding to the first CORESET group, the method further comprising:
applying the first skipping rule for the first CORESET group, wherein the first hybrid automatic repeat request message comprises the one-bit acknowledgement indication for the first CORESET group associated with the first skipping rule; and
transmitting a second hybrid automatic repeat request message in a second uplink resource based at least in part on determining whether to apply a second skipping rule for the second CORESET group, wherein the first hybrid automatic repeat request message is transmitted in a first uplink resource different from the second uplink resource.
15. The method of claim 12 , further comprising:
transmitting joint hybrid automatic repeat request feedback for the first downlink message corresponding to the first CORESET group and the second downlink message corresponding to the second CORESET group associated with the configuration.
16. The method of claim 15 , further comprising:
applying a first skipping rule for the first CORESET group, wherein the feedback message comprises the one-bit acknowledgement indication for the first CORESET group associated with the first skipping rule.
17. The method of claim 16 , further comprising:
applying a second skipping rule for the second CORESET group associated with the second downlink message, wherein the feedback message comprises a second one-bit acknowledgement indication for the second CORESET group associated with the second skipping rule.
18. The method of claim 16 , further comprising:
selectively applying a second skipping rule for the second CORESET group associated with the second downlink message, wherein the feedback message is associated with the semi-static feedback codebook.
19. The method of claim 11 , further comprising:
applying the first skipping rule associated with the downlink message comprising a semi-persistent scheduling release, a semi-persistent scheduled data reception, or a combination thereof, wherein the feedback message is associated with the first skipping rule.
20. The method of claim 19 , wherein the downlink message is an only downlink message associated with the feedback message based at least in part on application of the first skipping rule.
21. A user equipment (UE) for wireless communications, comprising:
means for obtaining a configuration for a downlink control channel monitoring occasion comprising a plurality of control resource sets (CORESETs), each CORESET being associated with one of a plurality of CORESET groups and one of a plurality of downlink component carriers, wherein the configuration is associated with a semi-static feedback codebook;
means for obtaining a downlink message associated with a feedback procedure in a first CORESET of the downlink control channel monitoring occasion corresponding to a first CORESET group, in a first semi-persistent scheduling occasion corresponding to the first CORESET group, or in both; and
means for outputting a feedback message comprising a one-bit acknowledgement indication for the first CORESET group associated with the downlink message and the configuration for the downlink control channel monitoring occasion comprising the plurality of CORESETs, wherein inclusion of the one-bit acknowledgement indication in the feedback message is in accordance with a first skipping rule for skipping feedback, the first skipping rule associated with the downlink message being scheduled via a fallback downlink control information message with a counter downlink assignment index value of one.
22. The UE of claim 21 , wherein the downlink message comprises a first downlink message, the apparatus further comprising:
means for obtaining, in a second CORESET of the downlink control channel monitoring occasion corresponding to a second CORESET group, in a second semi-persistent scheduling occasion corresponding to the second CORESET group, or in both, a second downlink message associated with the feedback procedure.
23. The UE of claim 22 , the apparatus further comprising:
means for outputting separate hybrid automatic repeat request feedback for the first downlink message corresponding to the first CORESET group and the second downlink message corresponding to the second CORESET group associated with the configuration.
24. The UE of claim 23 , wherein the feedback message comprises a first hybrid automatic repeat request message corresponding to the first CORESET group, the apparatus further comprising:
means for applying the first skipping rule for the first CORESET group, wherein the first hybrid automatic repeat request message comprises the one-bit acknowledgement indication for the first CORESET group associated with the first skipping rule; and
means for outputting a second hybrid automatic repeat request message in a second uplink resource based at least in part on determining whether to apply a second skipping rule for the second CORESET group, wherein the first hybrid automatic repeat request message is outputted in a first uplink resource different from the second uplink resource.
25. The UE of claim 22 , the apparatus further comprising:
means for outputting joint hybrid automatic repeat request feedback for the first downlink message corresponding to the first CORESET group and the second downlink message corresponding to the second CORESET group associated with the configuration.
26. The UE of claim 25 , the apparatus further comprising:
means for applying the first skipping rule for the first CORESET group, wherein the feedback message comprises the one-bit acknowledgement indication for the first CORESET group associated with the first skipping rule.
27. The UE of claim 26 , the apparatus further comprising:
means for applying a second skipping rule for the second CORESET group associated with the second downlink message, wherein the feedback message comprises a second one-bit acknowledgement indication for the second CORESET group associated with the second skipping rule.
28. The UE of claim 26 , the apparatus further comprising:
means for selectively applying a second skipping rule for the second CORESET group associated with the second downlink message, wherein the feedback message is associated with the semi-static feedback codebook.
29. The UE of claim 21 , the apparatus further comprising:
means for applying the first skipping rule associated with the downlink message comprising a semi-persistent scheduling release, a semi-persistent scheduled data reception, or a combination thereof, wherein the feedback message is associated with the first skipping rule, and wherein the downlink message is an only downlink message associated with the feedback message based at least in part on application of the first skipping rule.
30. A non-transitory computer-readable medium storing code for wireless communication at a user equipment, the code comprising instructions executable by a processor to:
obtain a configuration for a downlink control channel monitoring occasion comprising a plurality of control resource sets (CORESETs), each CORESET being associated with one of a plurality of CORESET groups and one of a plurality of downlink component carriers, wherein the configuration is associated with a semi-static feedback codebook;
obtain a downlink message associated with a feedback procedure in a first CORESET of the downlink control channel monitoring occasion corresponding to a first CORESET group, in a first semi-persistent scheduling occasion corresponding to the first CORESET group, or in both; and
output a feedback message comprising a one-bit acknowledgement indication for the first CORESET group associated with the downlink message and the configuration for the downlink control channel monitoring occasion comprising the plurality of CORESETs, wherein inclusion of the one-bit acknowledgement indication in the feedback message is in accordance with a first skipping rule for skipping feedback, the first skipping rule associated with the downlink message being scheduled via a fallback downlink control information message with a counter downlink assignment index value of one.