Method and apparatus for channel measurement and reporting in coreset basis
A UE includes a receiver configured to receive a first configuration for a first CORESET, a second configuration for a reception of a first CSI-RS, and the first CSI-RS. The first configuration includes a first TCI state. The TCI state for a CORESET indicates a set of quasi co-location properties for a PDCCH reception in the CORESET. A PDCCH includes a DCI format. The second configuration includes a first set of REs and the first TCI state. The UE also includes a processor operably connected to the receiver. The processor is configured to compute a first CQI value, based on the first CSI-RS, for a first PDCCH reception in the first CORESET and at least one CQI value based on the first CQI value. The UE further includes a transmitter operably connected to the processor, the transmitter configured to transmit a channel that includes the at least one CQI value.
1. A user equipment (UE) comprising:
a transceiver configured to receive:
a first configuration for a first control resource set (CORESET), wherein:
the first configuration includes a first transmission configuration indication (TCI) state,
a TCI state for a CORESET indicates a set of quasi co-location properties for a physical downlink control channel (PDCCH) reception in the CORESET, and
a PDCCH includes a downlink control information (DCI) format;
a second configuration for a reception of a first channel state information reference signal (CSI-RS), wherein the second configuration includes:
a first set of resource elements (REs), and
the first TCI state; and
the first CSI-RS; and
a processor operably coupled to the transceiver, the processor configured to compute:
a first channel quality indicator (CQI) value, based on the first CSI-RS, for a first PDCCH reception in the first CORESET, and
at least one CQI value based on the first CQI value,
wherein the transceiver is further configured to transmit a report that includes the at least one CQI value for the first PDCCH reception in the first CORESET.
2. The UE of claim 1 , wherein:
the transceiver is further configured to decode a DCI format in the first PDCCH reception that includes a demodulation reference signal (DM-RS); and
the processor is further configured to compute the at least one CQI value based on the DM-RS when:
the DCI format is correctly decoded, and
the first CSI-RS reception is not during the first PDCCH reception.
3. The UE of claim 1 , wherein:
the transceiver is further configured to receive a third configuration for a second CORESET, wherein the third configuration includes the first TCI state; and
the processor is further configured to compute a second CQI value, based on the first CSI-RS, for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes the first CQI value and the second CQI value.
4. The UE of claim 1 , wherein:
the transceiver is further configured to receive a third configuration for a second CORESET, wherein the third configuration includes the first TCI state; and
the processor is further configured to compute an offset, based on the first CSI-RS, relative to the first CQI value for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes the first CQI value and the offset.
5. The UE of claim 1 , wherein:
the transceiver is further configured to receive:
a third configuration for a second CORESET, wherein the third configuration includes a second TCI state,
a fourth configuration for a reception of a second CSI-RS, wherein the fourth configuration includes:
a second set of REs, and
the second TCI state, and
the second CSI-RS; and
the processor is further configured to compute a second CQI value, based on the second CSI-RS, for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes the first CQI value and the second CQI value.
6. The UE of claim 1 , wherein:
the transceiver is further configured to receive:
a third configuration for a second CORESET, wherein the third configuration includes a second TCI state,
a fourth configuration for a reception of a second CSI-RS, wherein the fourth configuration includes:
a second set of REs, and
the second TCI state, and
the second CSI-RS; and
the processor is further configured to compute a second CQI value, based on the second CSI-RS, for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes:
an index indicating the first CORESET and the first CQI value, when the first CQI value is larger than or equal to the second CQI value, and
an index indicating the second CORESET and the second CQI value, when the first CQI value is smaller than the second CQI value.
7. The UE of claim 1 , wherein:
the processor is further configured to compute a second CQI value for a reception of a physical downlink shared channel (PDSCH) based on the reception of the first CSI-RS, wherein:
the first CQI value is from a first set of CQI values,
the second CQI value is from a second set of CQI values, and
the first set of CQI values includes a smaller number of values than a second set of CQI values.
8. A base station comprising:
a transceiver configured to transmit:
a first configuration for a first control resource set (CORESET), wherein:
the first configuration includes a first transmission configuration indication (TCI) state,
a TCI state for a CORESET indicates a set of quasi co-location properties for a physical downlink control channel (PDCCH) transmission in the CORESET, and
a PDCCH transmission includes a downlink control information (DCI) format;
a second configuration for a transmission of a first channel state information reference signal (CSI-RS), wherein the second configuration includes a first set of resource elements (REs) and the first TCI state; and
the first CSI-RS,
wherein the transceiver is further configured to receive a report that includes at least one channel quality indicator (CQI) value for a first PDCCH transmission in the first CORESET, the CQI value associated with the first CSI-RS; and
a processor operably coupled to the transceiver, the processor configured to determine parameters for the first PDCCH transmission in the first CORESET based on the at least one CQI value.
9. The base station of claim 8 , wherein the transceiver is further configured to transmit a third configuration for a second CORESET, wherein:
the third configuration includes the first TCI state, and
the at least one CQI value includes:
a first CQI value, associated with the first CSI-RS, for determining parameters for the first PDCCH transmission in the first CORESET, and
a second CQI value, associated with the first CSI-RS, for determining parameters for a second PDCCH transmission in the second CORESET.
10. The base station of claim 8 , wherein:
the transceiver is further configured to transmit a third configuration for a second CORESET, wherein:
the third configuration includes the first TCI state, and
the at least one CQI value includes:
a first CQI value, associated with the first CSI-RS, for determining parameters for the first PDCCH transmission in the first CORESET, and
an offset, associated with the first CSI-RS, of the first CQI value for determining parameters for a second PDCCH transmission in the second CORESET.
11. The base station of claim 8 , wherein:
the transceiver is further configured to transmit:
a third configuration for a second CORESET that includes a second TCI state,
a fourth configuration for a transmission of a second CSI-RS that includes a second set of REs and the second TCI state, and
the second CSI-RS, wherein the at least one CQI value includes:
a first CQI value, associated with the first CSI-RS, for determining parameters for the first PDCCH transmission in the first CORESET, and
a second CQI value, associated with the second CSI-RS, for determining parameters for a second PDCCH transmission in the second CORESET.
12. The base station of claim 8 , wherein:
the transceiver is further configured to transmit:
a third configuration for a second CORESET that includes a second TCI state,
a fourth configuration for a transmission of a second CSI-RS that includes a second set of REs and the second TCI state, and
the second CSI-RS, wherein the at least one CQI value includes one of:
an index indicating the first CORESET and a first CQI value associated with the first CSI-RS for determining parameters for the first PDCCH transmission in the first CORESET, and
an index indicating the second CORESET and a second CQI value associated with the second CSI-RS for determining parameters for a second PDCCH transmission in the second CORESET.
13. The base station of claim 8 , wherein:
the at least one CQI value includes:
a first CQI value, associated with the first CSI-RS, for determining parameters for the first PDCCH transmission in the first CORESET, and
a second CQI value, associated with the first CSI-RS, for determining parameters for a physical downlink shared channel (PDSCH) transmission,
the first CQI value is from a first set of CQI values,
the second CQI value is from a second set of CQI values, and
the first set of CQI values includes a smaller number of values than the second set of CQI values.
14. A method for providing a channel quality indicator (CQI) value for reception of a physical downlink control channel (PDCCH) in a control resource set (CORESET), the method comprising:
receiving:
a first configuration for a first CORESET, wherein:
the first configuration includes a first transmission configuration indication (TCI) state,
a TCI state for a CORESET indicates a set of quasi co-location properties for a PDCCH reception in the CORESET, and
a PDCCH includes a downlink control information (DCI) format;
a second configuration for a reception of a first channel state information reference signal (CSI-RS), wherein the second configuration includes:
a first set of resource elements (REs), and
the first TCI state; and
the first CSI-RS;
computing:
a first CQI value, based on the first CSI-RS, for a first PDCCH reception in the first CORESET, and
at least one CQI value based on the first CQI value; and
transmitting a report that includes the at least one CQI value for the first PDCCH reception in the first CORESET.
15. The method of claim 14 , further comprising:
decoding a DCI format in the first PDCCH reception that includes a demodulation reference signal (DM-RS); and
computing the at least one CQI value based on the DM-RS when:
the DCI format is correctly decoded, and
the first CSI-RS reception is not during the first PDCCH reception.
16. The method of claim 14 , further comprising:
receiving a third configuration for a second CORESET, wherein the third configuration includes the first TCI state; and
computing a second CQI value, based on the first CSI-RS, for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes the first CQI value and the second CQI value.
17. The method of claim 14 , further comprising:
receiving a third configuration for a second CORESET, wherein the third configuration includes the first TCI state; and
computing an offset, based on the first CSI-RS, relative to the first CQI value for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes the first CQI value and the offset.
18. The method of claim 14 , further comprising:
receiving:
a third configuration for a second CORESET, wherein the third configuration includes a second TCI state,
a fourth configuration for a reception of a second CSI-RS, wherein the fourth configuration includes:
a second set of REs, and
the second TCI state, and
the second CSI-RS; and
computing a second CQI value, based on the second CSI-RS, for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes the first CQI value and the second CQI value.
19. The method of claim 14 , further comprising:
receiving:
a third configuration for a second CORESET, wherein the third configuration includes a second TCI state,
a fourth configuration for a reception of a second CSI-RS, wherein the fourth configuration includes:
a second set of REs, and
the second TCI state, and
the second CSI-RS; and
computing a second CQI value, based on the second CSI-RS, for a second PDCCH reception in the second CORESET, wherein the at least one CQI value includes:
an index indicating the first CORESET and the first CQI value, when the first CQI value is larger than or equal to the second CQI value, and
an index indicating the second CORESET and the second CQI value, when the first CQI value is smaller than the second CQI value.
20. The method of claim 14 , further comprising:
computing a second CQI value for a reception of a physical downlink shared channel (PDSCH) based on the reception of the first CSI-RS, wherein:
the first CQI value is from a first set of CQI values,
the second CQI value is from a second set of CQI values, and
the first set of CQI values includes a smaller number of values than a second set of CQI values.