Quasi co-location related priority rules for multi-downlink control information based multi-transmission/reception point
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, on a particular control resource set (CORESET), downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH). The UE may be configured with multi-DCI based multi-transmission/reception point (TRP) operation. The UE may determine, based at least in part on the UE being configured with multi-DCI based multi-TRP operation, a fixed higher layer index that identifies a CORESET group with which the particular CORESET is associated. The UE may perform an operation, associated with receiving the PDSCH or transmitting the PUSCH, based at least in part on the fixed higher layer index identifying the CORESET group with which the particular CORESET is associated. Numerous other aspects are provided.
1. A method of wireless communication performed by a user equipment (UE), comprising:
receiving, on a particular control resource set (CORESET), downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH),
wherein the UE is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
determining, based at least in part on the UE being configured with the multi-DCI based multi-TRP operation, a fixed higher layer index that identifies a CORESET group with which the particular CORESET is associated; and
performing an operation, associated with receiving the PDSCH or transmitting the PUSCH, based at least in part on the fixed higher layer index identifying the CORESET group with which the particular CORESET is associated.
2. The method of claim 1 , wherein, when the fixed higher layer index has not been configured, the fixed higher layer index is determined based at least in part on an assumption.
3. The method of claim 2 , wherein the assumption is that the fixed higher layer index corresponds to a first CORESET group, of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
4. The method of claim 1 , wherein the particular CORESET is CORESET 0.
5. The method of claim 1 , wherein the fixed higher layer index corresponds to a first CORESET group of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
6. The method of claim 1 , wherein the fixed higher layer index is determined based at least in part on a radio resource control (RRC) configuration.
7. A method of wireless communication performed by a user equipment (UE), comprising:
receiving downlink control information (DCI) on a control resource set (CORESET), the DCI scheduling a physical downlink shared channel (PDSCH),
wherein the UE is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
identifying, based at least in part on receiving the DCI on the CORESET and based at least in part on the UE being configured with the multi-DCI based multi-TRP operation, a particular CORESET having:
a lowest CORESET identifier associated with a monitored search space among a set of CORESETs in a latest slot monitored by the UE, and
a same higher layer index as the CORESET on which the DCI was received; and
determining a quasi co-location (QCL) for the PDSCH based at least in part on a QCL of the particular CORESET.
8. The method of claim 7 , wherein the QCL for the PDSCH is determined to be a same QCL as that of the particular CORESET.
9. The method of claim 7 , wherein the PDSCH is received based at least in part on the determined QCL for the PDSCH.
10. The method of claim 7 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that an offset between reception of the DCI and the PDSCH is less than an offset threshold.
11. The method of claim 7 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that at least one configured transmission configuration indicator (TCI) state for a serving cell of the PDSCH includes a particular QCL type.
12. The method of claim 11 , wherein the particular QCL type is QCL Type D.
13. 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:
receive, on a particular control resource set (CORESET), downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH),
wherein the UE is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
determine, based at least in part on the UE being configured with the multi-DCI based multi-TRP operation, a fixed higher layer index that identifies a CORESET group with which the particular CORESET is associated; and
perform an operation, associated with receiving the PDSCH or transmitting the PUSCH, based at least in part on the fixed higher layer index identifying the CORESET group with which the particular CORESET is associated.
14. The UE of claim 13 , wherein, when the fixed higher layer index has not been configured, the fixed higher layer index is determined based at least in part on an assumption.
15. The UE of claim 14 , wherein the assumption is that the fixed higher layer index corresponds to a first CORESET group, of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
16. The UE of claim 13 , wherein the particular CORESET is CORESET 0.
17. The UE of claim 13 , wherein the fixed higher layer index corresponds to a first CORESET group of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
18. The UE of claim 13 , wherein the fixed higher layer index is determined based at least in part on a radio resource control (RRC) configuration.
19. 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:
receive downlink control information (DCI) on a control resource set (CORESET), the DCI scheduling a physical downlink shared channel (PDSCH),
wherein the UE is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
identify, based at least in part on receiving the DCI on the CORESET and based at least in part on the UE being configured with the multi-DCI based multi-TRP operation, a particular CORESET having:
a lowest CORESET identifier associated with a monitored search space among a set of CORESETs in a latest slot monitored by the UE, and
a same higher layer index as the CORESET on which the DCI was received; and
determine a quasi co-location (QCL) for the PDSCH based at least in part on a QCL of the particular CORESET.
20. The UE of claim 19 , wherein the QCL for the PDSCH is determined to be a same QCL as that of the particular CORESET.
21. The UE of claim 19 , wherein the PDSCH is received based at least in part on the determined QCL for the PDSCH.
22. The UE of claim 19 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that an offset between reception of the DCI and the PDSCH is less than an offset threshold.
23. The UE of claim 19 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that at least one configured transmission configuration indicator (TCI) state for a serving cell of the PDSCH includes a particular QCL type.
24. The UE of claim 23 , wherein the particular QCL type is QCL Type D.
25. 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:
receive, on a particular control resource set (CORESET), downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH),
wherein the UE is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
determine, based at least in part on the UE being configured with the multi-DCI based multi-TRP operation, a fixed higher layer index that identifies a CORESET group with which the particular CORESET is associated; and
perform an operation, associated with receiving the PDSCH or transmitting the PUSCH, based at least in part on the fixed higher layer index identifying the CORESET group with which the particular CORESET is associated.
26. The non-transitory computer-readable medium of claim 25 , wherein, when the fixed higher layer index has not been configured, the fixed higher layer index is determined based at least in part on an assumption.
27. The non-transitory computer-readable medium of claim 26 , wherein the assumption is that the fixed higher layer index corresponds to a first CORESET group, of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
28. The non-transitory computer-readable medium of claim 25 , wherein the particular CORESET is CORESET 0.
29. The non-transitory computer-readable medium of claim 25 , wherein the fixed higher layer index corresponds to a first CORESET group of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
30. The non-transitory computer-readable medium of claim 25 , wherein the fixed higher layer index is determined based at least in part on a radio resource control (RRC) configuration.
31. 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:
receive downlink control information (DCI) on a control resource set (CORESET), the DCI scheduling a physical downlink shared channel (PDSCH),
wherein the UE is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
identify, based at least in part on receiving the DCI on the CORESET and based at least in part on the UE being configured with the multi-DCI based multi-TRP operation, a particular CORESET having:
a lowest CORESET identifier associated with a monitored search space among a set of CORESETs in a latest slot monitored by the UE, and
a same higher layer index as the CORESET on which the DCI was received; and
determine a quasi co-location (QCL) for the PDSCH based at least in part on a QCL of the particular CORESET.
32. The non-transitory computer-readable medium of claim 31 , wherein the QCL for the PDSCH is determined to be a same QCL as that of the particular CORESET.
33. The non-transitory computer-readable medium of claim 31 , wherein the PDSCH is received based at least in part on the determined QCL for the PDSCH.
34. The non-transitory computer-readable medium of claim 31 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that an offset between reception of the DCI and the PDSCH is less than an offset threshold.
35. The non-transitory computer-readable medium of claim 31 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that at least one configured transmission configuration indicator (TCI) state for a serving cell of the PDSCH includes a particular QCL type.
36. The non-transitory computer-readable medium of claim 35 , wherein the particular QCL type is QCL Type D.
37. An apparatus for wireless communication, comprising:
means for receiving, on a particular control resource set (CORESET), downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH),
wherein the apparatus is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
means for determining, based at least in part on the apparatus being configured with the multi-DCI based multi-TRP operation, a fixed higher layer index that identifies a CORESET group with which the particular CORESET is associated; and
means for performing an operation, associated with receiving the PDSCH or transmitting the PUSCH, based at least in part on the fixed higher layer index identifying the CORESET group with which the particular CORESET is associated.
38. The apparatus of claim 37 , wherein, when the fixed higher layer index has not been configured, the fixed higher layer index is determined based at least in part on an assumption.
39. The apparatus of claim 38 , wherein the assumption is that the fixed higher layer index corresponds to a first CORESET group, of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
40. The apparatus of claim 37 , wherein the particular CORESET is CORESET 0.
41. The apparatus of claim 37 , wherein the fixed higher layer index corresponds to a first CORESET group of a set of CORESET groups,
wherein the first CORESET group is associated with a first TRP of a set of TRPs.
42. The apparatus of claim 37 , wherein the fixed higher layer index is determined based at least in part on a radio resource control (RRC) configuration.
43. An apparatus for wireless communication, comprising:
means for receiving downlink control information (DCI) on a control resource set (CORESET), the DCI scheduling a physical downlink shared channel (PDSCH),
wherein the apparatus is configured with multi-DCI based multi-transmission/reception point (TRP) operation;
means for identifying, based at least in part on receiving the DCI on the CORESET and based at least in part on the apparatus being configured with the multi-DCI based multi-TRP operation, a particular CORESET having:
a lowest CORESET identifier associated with a monitored search space among a set of CORESETs in a latest slot monitored by the apparatus, and
a same higher layer index as the CORESET on which the DCI was received; and
means for determining a quasi co-location (QCL) for the PDSCH based at least in part on a QCL of the particular CORESET.
44. The apparatus of claim 43 , wherein the QCL for the PDSCH is determined to be a same QCL as that of the particular CORESET.
45. The apparatus of claim 43 , wherein the PDSCH is received based at least in part on the determined QCL for the PDSCH.
46. The apparatus of claim 43 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that an offset between reception of the DCI and the PDSCH is less than an offset threshold.
47. The apparatus of claim 43 , wherein the QCL for the PDSCH is determined based at least in part on the QCL of the particular CORESET further based at least in part on a determination that at least one configured transmission configuration indicator (TCI) state for a serving cell of the PDSCH includes a particular QCL type.
48. The apparatus of claim 47 , wherein the particular QCL type is QCL Type D.