Receiving channel state information from a UE for multi-TRP operation

1. A baseband processor configured to perform operations comprising:

selecting a first transmission reception point (TRP) of multiple TRPs associated with a cell of a network;

transmitting first radio resource control (RRC) configuration information to a user equipment (UE) comprising quasi-co location information (QCL-info) and a first physical cell identity (PCI);

transmitting second RRC configuration information to the UE comprising physical uplink control channel (PUCCH) pathloss reference signal (PUCCH-PathlossReferenceRS) and a second PCI;

transmitting third RRC configuration information to the UE comprising physical uplink shared channel (PUSCH) pathloss reference signal (PUSCH-PathlossReferenceRS) and a third PCI;

transmitting a signal to the UE via the selected TRP, wherein the signal is configured to trigger semi-persistent channel state information (SP-CSI) report at the UE; and

receiving the SP-CSI report from the UE that includes channel state information (CSI) corresponding to each TRP of the multiple TRPs.

2. The baseband processor of claim 1 , further comprising:

transmitting, a medium access control (MAC) control element (CE) that is configured to activate multiple SP-CSI reference signals (SP-CSI-RS) at the UE, wherein each SP-CSI-RS corresponds to a respective one of the multiple TRPs.

3. The baseband processor of claim 2 , wherein the MAC CE is configured to include at least one of an activation/deactivation field, a serving cell ID field, a bandwidth part (BWP) ID field, multiple transmission configuration indicator (TCI) state IDs, multiple SP-CSI-RS resource set IDs and multiple SP-CSI interference measurement (SP-CSI-IM) resource set IDs.

4. The baseband processor of claim 3 , wherein the MAC CE is configured to activate Sp-CSI-RS in more than one component carrier (CC) or more than one bandwidth part (BWP).

5. The baseband processor of claim 1 , wherein the signal configured to trigger the SP-CSI report is a medium access control (MAC) control element (CE) and wherein the MAC CE includes at least one of a serving cell ID field, a bandwidth part (BWP) ID field and an indication of whether SP-CSI is activated in each of the multiple TRPs.

6. The baseband processor of claim 5 , wherein the MAC CE is configured to activate SP-CSI-RS in more than one component carrier (CC) or more than one bandwidth part (BWP).

7. The baseband processor of claim 1 , wherein the signal configured to trigger the SP-CSI report is downlink control information (DCI).

8. The baseband processor of claim 7 , wherein the DCI includes a CSI request field that is based on a bitmap.

9. The baseband processor of claim 1 , the operations further comprising:

scheduling the transmission of downlink data from a second TRP that is different than the first TRP in response to the measurement report; and

configuring one or more of the multiple TRPs as a special cell to the second TRP.

10. The baseband processor of claim 9 , wherein each of the one or more of the multiple TRPs is configured with a different CORESETPoolIndex.

11. The baseband processor of claim 1 , wherein the first TRP of the multiple TRPs is configured with the first physical cell ID (PCI).

12. A cell, comprising:

a communication interface configured to communicate with a user equipment (UE); and

a processor communicatively coupled with the communication interface and configured to perform operations, the operations comprising:

selecting a first transmission reception point (TRP) of multiple TRPs associated with a cell of a network;

transmitting first radio resource control (RRC) configuration information to a user equipment (UE) comprising quasi-co location information (QCL-info) and a first physical cell identity (PCI);

transmitting second RRC configuration information to the UE comprising physical uplink control channel (PUCCH) pathloss reference signal (PUCCH-PathlossReferenceRS) and a second PCI;

transmitting third RRC configuration information to the UE comprising physical uplink shared channel (PUSCH) Pathloss reference signal (PUSCH-PathlossReferenceRS) and a third PCI;

transmitting a signal to the UE via the selected TRP, wherein the signal is configured to trigger semi-persistent channel state information (SP-CSI) report at the UE; and

receiving the SP-CSI report from the UE that includes channel state information (CSI) corresponding to each TRP of the multiple TRPs.

13. The cell of claim 12 , wherein the signal configured to trigger the SP-CSI is downlink control information (DCI).

14. The cell of claim 13 , the operations further comprising:

transmitting a radio resource control (RRC) message to the UE,

wherein the RRC message configures a SP-CSI trigger state codepoint that includes multiple SP-CSI trigger states, and

wherein a CSI request field in the DCI activates all of the multiple SP-CSI trigger states in the same SP-CSI trigger state codepoint.

15. The cell of claim 13 , wherein the DCI includes a CSI request bitwidth that is increased to activate SP-CSI for the multiple TRPs.

16. A method, comprising:

at a cell of a network;

selecting a first transmission reception point (TRP) of multiple TRPs associated with a cell of a network;

transmitting first radio resource control (RRC) configuration information to a user equipment (UE) comprising quasi-co location information (QCL-info) and a first physical cell identity (PCI);

transmitting second RRC configuration information to the UE comprising physical uplink control channel (PUCCH) pathloss reference signal (PUCCH-PathlossReferenceRS) and a second PCI;

transmitting third RRC configuration information to the UE comprising physical uplink shared channel (PUSCH) pathloss reference signal (PUSCH-PathlossReferenceRS) and a third PCI;

transmitting a signal to the via the selected TRP, wherein the signal is configured to trigger semi-persistent channel state information (SP-CSI) report at the UE; and

receiving the SP-CSI report from the UE that includes channel state information (CSI) corresponding to each TRP of the multiple TRPs.

17. The method of claim 16 , wherein the multiple TRPs is a set of TRPs that includes at least the first TRP, a second TRP, a third TRP and a fourth TRP.

18. The method of claim 16 , further comprising:

scheduling the transmission of downlink data from a second TRP that is different than the first TRP in response to the measurement report.

19. The method of claim 16 , wherein the PUCCH-PathlossReferenceRS is under sounding reference signal (SRS) resource set.