Method and apparatus for QCL association indication for discontinuous transmission indication in a wireless communication system
Methods and apparatuses for QCL association indication for discontinuous transmission indication are disclosed herein. In one method, the UE receives a first configuration of a plurality of reference signals or a configuration of a plurality of reference signal sets in a cell, wherein a reference signal serves as a quasi-co-location reference. The UE receives a second configuration of an association between a pre-emption indication (PI) and one reference signal from the plurality of reference signals or one reference signal set from the plurality of reference signal sets. The UE receives data based on a reference signal from a first reference signal set. The UE processes data according to the PI for the first reference signal set and not processing the data according to the PI for a second reference signal set.
1. A method of a User Equipment (UE), the method comprising:
receiving a first configuration of a plurality of reference signals or a configuration of a plurality of reference signal sets in a cell, wherein a reference signal serves as a quasi-collocation reference and the plurality of reference signal set comprises at least a first reference signal set and a second reference signal set;
receiving a second configuration of an association between a pre-emption indication (PI) and one reference signal from the plurality of reference signals or one reference signal from the plurality of reference signal sets;
receiving data based on a reference signal;
receiving one or more PIs, wherein each of the one or more PIs is derived, based on the association, for one of the plurality of the reference signal sets; and
processing data according to the PI for the first reference signal set and not processing the data according to the PI for the second reference signal set, wherein the reference signal for receiving data is included in the first reference signal set, and not included in the second reference signal set.
2. The method of claim 1 , wherein the reference signal set is constructed based on the same characteristic, wherein the characteristic is a control resource set, bandwidth part, numerology, subcarrier spacing, Network (NW) beam, Transmission/Reception Point (TRP), Radio Network Temporary Identifier (RNTI), or a same area served by a set of NW beams.
3. The method of claim 1 , wherein the reference signal set comprises one or more reference signals.
4. The method of claim 1 , the reference signal is used to indicate a reception beam or a transmission beam for a channel or a signal.
5. The method of claim 1 , further comprising:
receiving a group common Physical Downlink Control Channel (PDCCH) providing the PI for the reference signal or the reference signal set.
6. The method of claim 5 , wherein the group common PDCCH provides the PI for its own reference signal or its own reference signal set, wherein its own reference signal or its own reference signal set is used to receive the group common PDCCH.
7. The method of claim 5 , wherein the group common PDCCH provides the PI for the plurality of reference signal sets.
8. The method of claim 5 , wherein the association between the PI and the reference signal or between the PI and the reference signal set is an association between a PI position in the group common PDCCH and the reference signal or the reference signal set.
9. The method of claim 8 , wherein the PI position is an integer multiple of 14.
10. The method of claim 8 , wherein the PI position is a starting position of the PI in a downlink control information.
11. The method of claim 5 , wherein the group common PDCCH indicates an entry of a table for indicating the association between the PI and the reference signal or the reference signal set.
12. The method of claim 11 , wherein the UE is configured with the table and the entry of the table indicates the reference signal or the reference signal set.
13. The method of claim 1 , wherein the first reference signal set is different from the second reference signal set.
14. A User Equipment (UE), comprising:
a control circuit;
a processor installed in the control circuit; and
a memory installed in the control circuit and coupled to the processor;
wherein the processor is configured to execute a program code stored in the memory to:
configure the UE with a plurality of reference signals or a plurality of reference signal sets in a cell, wherein a reference signal serves as a quasi-collocation reference and the plurality of reference signal set comprises at least a first reference signal set and a second reference signal set;
configure the UE with an association between a pre-emption indication (PI) and one reference signal from the plurality of reference signals or one reference signal set from the plurality of reference signal sets;
receive data based on a reference signal;
receive one or more PIs, wherein each of the one or more PIs is derived, based on the association, for one of the plurality of the reference signal sets; and
process data according to the PI for the first reference signal set and not process the data according to the PI for the second reference signal set, wherein the reference signal for receiving data is included in the first reference signal set, and not included in the second reference signal set.
15. The method of claim 1 , wherein the PI for the first reference signal set is received based on one reference signal included in the first reference signal set; and/or
wherein the PI for the second reference signal set is received based on one reference signal included in the second reference signal set.
16. The method of claim 1 , wherein processing data according to a specific PI means decoding the data via considering one portion of the data, indicated by the specific PI is pre-empted or has no transmission for the UE.
17. The method of claim 1 , wherein not processing data according to a specific PI means decoding the data without considering pre-empted indication by the specific PI.