Patent ID: 11895650
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method of receiving a physical downlink control channel (PDCCH) in a wireless communication system, the method performed by a terminal and comprising:
receiving, from a base station, configuration information related to a control resource set (CORESET), wherein the configuration information includes a plurality of transmission configuration indicator (TCI) state candidates, and each of the plurality of TCI state candidates includes information for configuring a quasi co-location (QCL) relationship between one or more reference signals and one or more antenna ports of a demodulation reference signal (DMRS) of a PDCCH;
receiving, from the base station, a single medium access control (MAC) control element (CE) for indicating two TCI states of the CORESET among the plurality of TCI state candidates; and
receiving, from the base station, a first PDCCH in the CORESET,
wherein, based on the two TCI states being activated for the CORESET by the single MAC CE, one or more antenna ports of a DMRS of the first PDCCH in the CORESET are quasi co-located (QCLed) with reference signals of the two TCI states, and
wherein the single MAC CE includes i) a CORESET identifier (ID) field, ii) a first TCI state ID field indicating one of the two TCI states applicable to the CORESET identified by the CORESET ID field and iii) a second TCI state ID field indicating the other of the two TCI states applicable to the CORESET identified by the CORESET ID field.