Method for monitoring control signal of terminal in wireless communication system and terminal using the same

A base station (BS), the BS comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
• transmit, through radio resource control (RRC) signaling, configuration information regarding transmission configuration indication (TCI) states for each of a plurality of control resource sets (CORESETs);
• and
• based on an overlap between physical downlink control channel (PDCCH) monitoring occasions in the plurality of CORESETs, transmit at least one control signal in at least one CORESET among the plurality of CORESETs,
• wherein based on (i) a first TCI state among TCI states for a first CORESET informing a Quasi Co Location (QCL) relation with a first channel state information reference signal (CSI-RS), (ii) a second TCI state among TCI states for a second CORESET informing a QCL relation with a second CSI-RS, and (iii) the first CSI-RS and the second CSI-RS being related with a same synchronization signal/physical broadcast channel block (SSB):
• the at least one control signal is capable of being transmitted through at least one PDCCH in the first CORESET and the second CORESET.

At least one processor that is configured to control a wireless communication device to perform operations comprising:

• transmitting, through radio resource control (RRC) signaling, configuration information regarding transmission configuration indication (TCI) states for each of a plurality of control resource sets (CORESETs);
• and
• based on an overlap between physical downlink control channel (PDCCH) monitoring occasions in the plurality of CORESETs, transmitting at least one control signal in at least one CORESET among the plurality of CORESETs,
• wherein based on (i) a first TCI state among TCI states for a first CORESET informing a Quasi Co Location (QCL) relation with a first channel state information reference signal (CSI-RS), (ii) a second TCI state among TCI states for a second CORESET informing a QCL relation with a second CSI-RS, and (iii) the first CSI-RS and the second CSI-RS being related with a same synchronization signal/physical broadcast channel block (SSB):
• the at least one control signal is capable of being transmitted through at least one PDCCH in the first CORESET and the second CORESET.