Method and apparatus for determining priority regarding downlink control information reception in wireless communication system
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. the disclosure provides a method performed by at terminal in a wireless communication system, the method comprises receiving, from a base station, a RRC message including configuration information on a plurality of search spaces (SSs), identifying a first CORESET corresponding to a first SS with lowest index among the plurality of SSs, identifying one or more SSs by excluding one or more first SSs associated with the first CORESET from the plurality of SSs, identifying at least one SS linked with one of the one or more first SSs among the one or more SSs, identifying a second CORESET corresponding to a second SS with lowest index among the at least one SS, and monitoring PDCCHs in overlapping PDCCH monitoring occasions in the first CORESET and the second CORESET.
1. A method performed by a terminal in a communication system, the method comprising:
receiving, via higher layer signaling, a first configuration associated with a number of quasi co-location (QCL) type D properties for physical downlink control channel (PDCCH) repetition;
identifying to perform PDCCH monitoring for the PDCCH repetition on PDCCH candidates in overlapping PDCCH monitoring occasions in multiple control resource sets (CORESETs) configured with different QCL type D properties; and
performing the PDCCH monitoring based on the first configuration,
wherein the performing the PDCCH monitoring comprises:
identifying whether second search spaces, except search spaces associated with CORESETs with a first QCL type D property, that are linked with at least one of search spaces associated with the CORESETs with the first QCL type D property by a second configuration associated with search space linking exist;
in case that the second search spaces exist, performing the PDCCH monitoring in a first CORESET with the first QCL type D property and a second CORESET with a second QCL type D property among the multiple CORESETs, wherein the first CORESET corresponds to a search space with lowest index among first search spaces; and
wherein the second CORESET corresponds to a search space with lowest index among the second search spaces, and
in case that the second search spaces do not exist, performing the PDCCH monitoring only in the first CORESET with the first QCL type D property among the multiple CORESETS,
wherein the PDCCH monitoring in the first CORESET with the first QCL type D property is performed based on a first transmission configuration indication (TCI) state corresponding to the first QCL type D property, and
wherein the PDCCH monitoring in the second CORESET with the second QCL type D property is performed based on a second TCI state corresponding to the second QCL type D property.
2. The method of claim 1 , further comprising:
transmitting capability information including information associated with a plurality of QCL type D properties being supported by the terminal to perform the PDCCH monitoring for the PDCCH repetition.
3. The method of claim 1 , wherein in case that a plurality of cells for the terminal includes at least one cell including common search spaces (CSSs), the first search spaces and the second search spaces are included in a cell with lowest index among the at least one cell including the CSSs and each of the first search spaces and each of the second search spaces are a CSS, and
wherein in case that the plurality of cells does not include the at least one cell including the CSSs, the first search spaces and the second search spaces are included in a cell with lowest index among the plurality of cells and each of the first search spaces and each of the second search spaces are a user equipment specific search space (USS).
4. The method of claim 1 , wherein the second search spaces correspond to remaining search spaces among the first search spaces except for the search spaces associated with the CORESETs with the first QCL type D property for the PDCCH repetition.
5. A terminal in a communication system, the terminal comprising:
a transceiver; and
a processor coupled to the transceiver, wherein the processor is configured to:
receive, via higher layer signaling, a first configuration associated with a number of quasi co-location (QCL) type D properties for physical downlink control channel (PDCCH) repetition;
identify to perform PDCCH monitoring for the PDCCH repetition on PDCCH candidates in overlapping PDCCH monitoring occasions in multiple control resource sets (CORESETs) configured with different QCL type D properties;
perform the PDCCH monitoring based on the configuration,
wherein, for performing the PDCCH monitoring, the processor is further configured to:
perform the PDCCH monitoring in a first CORESET with a first QCL type D property among the multiple CORESETs based on a first transmission configuration indication (TCI) state corresponding to the first QCL type D property, wherein the first CORESET corresponds to a search space with lowest index among first search spaces;
identify whether second search spaces, except search spaces associated with CORESETs with the first QCL type D property, that are linked with at least one of the search spaces associated with the CORESETs with the first QCL type D property by a second configuration associated with search space linking exist; and
in case that the second search spaces exist, perform the PDCCH monitoring in a second CORESET with a second QCL type D property among the multiple CORESETs based on a second TCI state corresponding to the second QCL type D property, wherein the second CORESET corresponds to a search space with lowest index among second search spaces, and
wherein in case that the second search spaces do not exist, the PDCCH monitoring in the second CORESET is not performed.
6. The terminal of claim 5 , wherein the processor is further configured to:
transmit capability information including information associated with a plurality of QCL type D properties being supported by the terminal to perform the PDCCH monitoring for the PDCCH repetition.
7. The terminal of claim 5 , wherein in case that a plurality of cells for the terminal includes at least one cell including common search spaces (CSSs), the first search spaces and the second search spaces are included in a cell with lowest index among the at least one cell including the CSSs and each of the first search spaces and each of the second search spaces are a CSS, and
wherein in case that the plurality of cells does not include the at least one cell including the CSSs, the first search spaces and the second search spaces are included in a cell with lowest index among the plurality of cells and each of the first search spaces and each of the second search spaces are a user equipment specific search space (USS).
8. The terminal of claim 5 , wherein the second search spaces correspond to remaining search spaces among the first search spaces except for the search spaces associated with the CORESETs with the first QCL type D property for the PDCCH repetition.
9. A method performed by a base station in a communication system, the method comprising:
transmitting, via higher layer signaling, a first configuration associated with a number of quasi co-location (QCL) type D properties for physical downlink control channel (PDCCH) repetition;
identifying to perform PDCCH transmission for the PDCCH repetition on PDCCH candidates in overlapping PDCCH monitoring occasions in multiple control resource sets (CORESETs) configured with different QCL type D properties;
performing the PDCCH transmission associated with the configuration,
wherein the performing the PDCCH transmission comprises:
performing the PDCCH transmission in a first CORESET with a first QCL type D property among the multiple CORESETs based on a first transmission configuration indication (TCI) state corresponding to the first QCL type D property, wherein the first CORESET corresponds to a search space with lowest index among first search spaces;
identifying whether second search spaces, except search spaces associated with CORESETs with the first QCL type D property, that are linked with at least one of the search spaces associated with the CORESETs with the first QCL type D property by a second configuration associated with search space linking exist; and
in case that the second search spaces exist, performing the PDCCH transmission in a second CORESET with a second QCL type D property among the multiple CORESETs based on a second TCI state corresponding to the second QCL type D property, wherein the second CORESET corresponds to a search space with lowest index among second search spaces, and
wherein in case that the second search spaces do not exist, the PDCCH transmission in the second CORESET is not performed.
10. The method of claim 9 , further comprising:
receiving capability information including information associated with a plurality of QCL type D properties being supported by a terminal to perform the PDCCH monitoring for the PDCCH repetition.
11. The method of claim 9 , wherein in case that a plurality of cells associated with the PDCCH transmission includes at least one cell including common search spaces (CSSs), the first search spaces and the second search spaces are included in a cell with lowest index among the at least one cell including the CSSs and each of the first search spaces and each of the second search spaces are a CSS, and
wherein in case that the plurality of cells does not include the at least one cell including the CSSs, the first search spaces and the second search spaces are included in a cell with lowest index among the plurality of cells and each of the first search spaces and each of the second search spaces are a user equipment specific search space (USS).
12. The method of claim 9 , wherein the second search spaces correspond to remaining search spaces among the first search spaces except for the search spaces associated with the CORESETs with the first QCL type D property for the PDCCH repetition.
13. A base station in a communication system, the base station comprising:
a transceiver; and
a processor coupled to the transceiver, wherein the processor is configured to:
transmit, via higher layer signaling, a first configuration associated with a number of quasi co-location (QCL) type D properties for physical downlink control channel (PDCCH) repetition;
identify to perform PDCCH transmission for the PDCCH repetition on PDCCH candidates in overlapping PDCCH monitoring occasions in multiple control resource sets (CORESETs) configured with different QCL type D properties;
perform the PDCCH transmission associated with the configuration,
wherein, for performing the PDCCH transmission, the processor is further configured to:
perform the PDCCH transmission in a first CORESET with a first QCL type D property among the multiple CORESETs based on a first transmission configuration indication (TCI) state corresponding to the first QCL type D property, wherein the first CORESET corresponds to a search space with lowest index among first search spaces;
identify whether second search spaces, except search spaces associated with CORESETs with the first QCL type D property, that are linked with at least one of the search spaces associated with the CORESETs with the first QCL type D property by a second configuration associated with search space linking exist; and
in case that the second search spaces exist, perform the PDCCH transmission in a second CORESET with a second QCL type D property among the multiple CORESETs based on a second TCI state corresponding to the second QCL type D property, wherein the second CORESET corresponds to a search space with lowest index among second search spaces, and
wherein in case that the second search spaces do not exist, the PDCCH transmission in the second CORESET is not performed.
14. The base station of claim 13 , wherein the processor is further configured to:
receive capability information including information associated with a plurality of QCL type D properties being supported by a terminal to perform the PDCCH monitoring for the PDCCH repetition.
15. The base station of claim 13 , wherein in case that a plurality of cells associated with the PDCCH transmission includes at least one cell including common search spaces (CSSs), the first search spaces and the second search spaces are included in a cell with lowest index among the at least one cell including the CSSs and each of the first search spaces and each of the second search spaces are a CSS, and
wherein in case that the plurality of cells does not include the at least one cell including the CSSs, the first search spaces and the second search spaces are included in a cell with lowest index among the plurality of cells and each of the first search spaces and each of the second search spaces are a user equipment specific search space (USS).
16. The base station of claim 13 , wherein the second search spaces correspond to remaining search spaces among the first search spaces except for the search spaces associated with the CORESETs with the first QCL type D property for the PDCCH repetition.