Blind detection method and apparatus for PDCCH candidate, user equipment, electronic device and storage medium
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments of the present disclosure provide a blind detection method for Physical Downlink Control Channel (PDCCH) candidate, comprising: determining a resource location of a serving cell for transmitting the PDCCH candidate corresponding to a Primary cell (Pcell), wherein, the serving cell includes Pcell and/or Secondary cell (Scell); and blindly detecting the PDCCH candidate corresponding to Pcell on the determined resource location of the serving cell. Based on the solution of the embodiment of the present application, in a CA system, the allocation of the resources occupied by the PDCCH can be implemented more reasonably and effectively.
1 . A user equipment (UE) in a communication system, the UE comprising:
a transceiver; and
a controller configured to:
receive, from a base station, information for a value of alpha used to determine a maximum number of physical downlink control channel (PDCCH) candidates to monitor on a primary cell (PCell) and a secondary cell (SCell), wherein the PCell is scheduled from the PCell and the SCell, and wherein the value of alpha is a rational number less than 1,
determine a maximum number of first PDCCH candidates to monitor on the PCell based on the value of alpha,
determine a maximum number of second PDCCH candidates to monitor on the SCell based on the value of alpha,
monitor first PDCCH candidates on the PCell based on the maximum number of first PDCCH candidates, and
monitor second PDCCH candidates on the SCell based on the maximum number of second PDCCH candidates.
2 . The UE of claim 1 , wherein the first PDCCH candidates are in common search space (CSS) set on the PCell, and
wherein a first PDCCH associated with the first PDCCH candidates in the CSS set includes downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by one of system information radio network temporary identifier (SI-RNTI), paging RNTI (P-RNTI), random access RNTI (RA-RNTI), temporary cell RNTI (TC-RNTI), and cell RNTI (C-RNTI).
3 . The UE of claim 1 , wherein the second PDCCH candidate are in UE-specific search space (USS) set on the SCell based on a signaling from the base station.
4 . A base station in a communication system, the base station comprising:
a transceiver; and
a controller configured to:
transmit, to a user equipment (UE), information for a value of alpha used to determine a maximum number of physical downlink control channel (PDCCH) candidates to monitor on a primary cell (PCell) and a secondary cell (SCell), wherein the PCell is scheduled from the PCell and the SCell, and wherein the value of alpha is a rational number less than 1,
transmit, to the UE, a first PDCCH associated with first PDCCH candidates on the PCell, and
transmit, to the UE, a second PDCCH associated with second PDCCH candidates on the SCell,
wherein a maximum number of the first PDCCH candidates to monitor on the PCell is based on the value of alpha, and
wherein a maximum number of second PDCCH candidates to monitor on the SCell is based on the value of alpha.
5 . The base station of claim 4 , wherein the first PDCCH candidates are in common search space (CSS) set on the PCell, and
wherein the first PDCCH associated with first PDCCH candidates in the CSS set includes downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by one of system information radio network temporary identifier (SI-RNTI), paging RNTI (P-RNTI), random access RNTI (RA-RNTI), temporary cell RNTI (TC-RNTI), and cell RNTI (C-RNTI).
6 . The base station of claim 4 , wherein the second PDCCH candidates are in UE-specific search space (USS) set on the SCell according to a signaling to the UE.
7 . A method performed by a user equipment (UE) in a communication system, the method comprising:
receiving, from a base station, information for a value of alpha used to determine a maximum number of physical downlink control channel (PDCCH) candidates to monitor on a primary cell (PCell) and a secondary cell (SCell), wherein the PCell is scheduled from the PCell and the SCell, and wherein the value of alpha is a rational number less than 1;
determining a maximum number of first PDCCH candidates to monitor on the PCell based on the value of alpha,
determining a maximum number of second PDCCH candidates to monitor on the SCell based on the value of alpha,
monitoring first PDCCH candidates on the PCell based on the maximum number of first PDCCH candidates; and
monitoring second PDCCH candidates on the SCell based on the maximum number of second PDCCH candidates.
8 . The method of claim 7 , wherein the first PDCCH candidates are in common search space (CSS) set on the PCell, and
wherein a first PDCCH associated with the first PDCCH candidates in the CSS set includes downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by one of system information radio network temporary identifier (SI-RNTI), paging RNTI (P-RNTI), random access RNTI (RA-RNTI), temporary cell RNTI (TC-RNTI), and cell RNTI (C-RNTI).
9 . The method of claim 7 , wherein the second PDCCH candidates are in UE-specific search space (USS) set on the SCell based on a signaling from the base station.
10 . A method performed by a base station in a communication system, the method comprising:
transmitting, to a user equipment (UE), information for a value of alpha used to determine a maximum number of physical downlink control channel (PDCCH) candidates to monitor on a primary cell (PCell) and a secondary cell (SCell), wherein the PCell is scheduled from the PCell and the SCell, and wherein the value of alpha is a rational number less than 1;
transmitting, to the UE, a first PDCCH associated with first PDCCH candidates on the PCell; and
transmitting, to the UE, a second PDCCH associated with second PDCCH candidates on the SCell,
wherein a maximum number of the first PDCCH candidates to monitor on the PCell is based on the value of alpha, and
wherein a maximum number of second PDCCH candidates to monitor on the SCell is based on the value of alpha.
11 . The method of claim 10 , wherein the first PDCCH candidates are in common search space (CSS) set on the PCell, and
wherein the first PDCCH associated with the first PDCCH candidates in the CSS set includes downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by one of system information radio network temporary identifier (SI-RNTI), paging RNTI (P-RNTI), random access RNTI (RA-RNTI), temporary cell RNTI (TC-RNTI), and cell RNTI (C-RNTI).
12 . The method of claim 10 , wherein the second PDCCH candidates are in UE-specific search space (USS) set on the SCell according to a signaling to the UE.