Ultra-reliable low latency communication with multiple transmission-reception points
The techniques described herein provide procedures at user equipment (UEs) for performing channel state information (CSI) reporting and sounding reference signal (SRS) transmissions based on an ultra-reliable low latency communication (URLLC) block error rate (BLER) target and for reliably receiving PDCCH transmissions. For CSI reporting, a UE may be configured to generate a CSI report based on a BLER target and on received CSI reference signals (CSI-RSs), where the CSI-RSs may be transmitted on one or more groups of quasi co-located antenna ports. For SRS transmissions, a UE may be configured to transmit SRS based on an SRS configuration determined based on a BLER target. For receiving PDCCH transmissions, a UE may be configured to receive and combine DCI received from multiple base stations.
1. A user equipment (UE) for wireless communication, comprising:
one or more processors configured to cause the UE to:
monitor for downlink control information (DCI) in:
a first physical downlink control channel (PDCCH) candidate, and
a second PDCCH candidate different than the first PDCCH candidate, the first PDCCH candidate corresponding to a same PDCCH candidate index as the second PDCCH candidate; and
obtain first DCI in the first PDCCH candidate and second DCI in the second PDCCH candidate according to the monitoring, wherein the first DCI and the second DCI comprise same information in accordance with the first PDCCH candidate corresponding to the same PDCCH candidate index as the second PDCCH candidate.
2. The UE of claim 1 , wherein the first DCI and the second DCI comprise the same information further in accordance with the first PDCCH candidate corresponding to a same aggregation level as the second PDCCH candidate.
3. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
combine the first DCI and the second DCI to obtain combined DCI in accordance with the first DCI and the second DCI comprising the same information.
4. The UE of claim 3 , wherein the one or more processors are further configured to cause the UE to:
obtain or output data in accordance with the combined DCI.
5. The UE of claim 1 , wherein the first DCI and the second DCI comprise the same information further in accordance with the first DCI and the second DCI corresponding to linked transmission-reception points (TRPs).
6. The UE of claim 5 , wherein the one or more processors configured to cause the UE to obtain the first DCI and the second DCI are configured to cause the UE to:
obtain the first DCI corresponding to a first TRP of the linked TRPs; and
obtain the second DCI corresponding to a second TRP of the linked TRPs, wherein the first TRP is linked to the second TRP.
7. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
obtain data rate-matched around the first PDCCH candidate and the second PDCCH candidate.
8. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
rate-match data around the first PDCCH candidate and the second PDCCH candidate; and
output the data in accordance with the rate-matching.
9. The UE of claim 1 , wherein the first DCI and the second DCI are received via a plurality of search spaces.
10. The UE of claim 9 , wherein the plurality of search spaces comprises a common search space and one or more UE-specific search spaces.
11. A method for wireless communication at a user equipment (UE), comprising:
monitoring for downlink control information (DCI) in:
a first physical downlink control channel (PDCCH) candidate, and
a second PDCCH candidate different than the first PDCCH candidate, the first PDCCH candidate corresponding to a same PDCCH candidate index as the second PDCCH candidate; and
receiving first DCI in the first PDCCH candidate and second DCI in the second PDCCH candidate according to the monitoring, wherein the first DCI and the second DCI comprise same information in accordance with the first PDCCH candidate corresponding to the same PDCCH candidate index as the second PDCCH candidate.
12. The method of claim 11 , wherein the first DCI and the second DCI comprise the same information further in accordance with the first PDCCH candidate corresponding to a same aggregation level as the second PDCCH candidate.
13. The method of claim 11 , further comprising:
combining the first DCI and the second DCI to obtain combined DCI in accordance with the first DCI and the second DCI comprising the same information.
14. The method of claim 13 , further comprising:
communicating data in accordance with the combined DCI.
15. The method of claim 11 , wherein the first DCI and the second DCI comprise the same information further in accordance with the first DCI and the second DCI corresponding to linked transmission-reception points (TRPs).
16. The method of claim 15 , wherein receiving the first DCI and the second DCI comprises:
receiving the first DCI corresponding to a first TRP of the linked TRPs; and
receiving the second DCI corresponding to a second TRP of the linked TRPs, wherein the first TRP is linked to the second TRP.
17. The method of claim 11 , further comprising:
receiving data rate-matched around the first PDCCH candidate and the second PDCCH candidate.
18. The method of claim 11 , further comprising:
rate-matching data around the first PDCCH candidate and the second PDCCH candidate; and
transmitting the data in accordance with the rate-matching.
19. The method of claim 11 , wherein the first DCI and the second DCI are received via a plurality of search spaces.
20. The method of claim 19 , wherein the plurality of search spaces comprises a common search space and one or more UE-specific search spaces.