Method and device for performing uplink or downlink transmission and reception in wireless communication system

A user equipment (UE) that performs uplink transmission or downlink reception in a wireless communication system, the UE comprising:

• at least one transceiver;
• and
• at least one processor connected to the at least one transceiver,
• wherein the at least one processor is configured to:
• receive, from a base station through the at least one transceiver, configuration information related to a plurality of control resource sets (CORESET) pool candidates;
• receive, from the base station through the at least one transceiver, first information activating a first CORESET pool and a second CORESET pool among the plurality of CORESET pool candidates;
• and
• perform the uplink transmission or the downlink reception based on at least one CORESET included in each of the first CORESET pool and the second CORESET pool,
• wherein the first CORESET pool is associated with a serving cell, and the second CORESET pool is associated with one of the serving cell or non-serving cell.

A base station that performs uplink reception or downlink transmission in a wireless communication system, the base station comprising:

• at least one transceiver;
• and
• at least one processor connected to the at least one transceiver,
• wherein the at least one processor is configured to:
• transmit, to a user equipment (UE) through the at least one transceiver, configuration information related to a plurality of control resource sets (CORESET) pool candidates;
• transmit, to the UE through the at least one transceiver, first information activating a first CORESET pool and a second CORESET pool among the plurality of CORESET pool candidates;
• and
• perform the uplink reception or the downlink transmission based on at least one CORESET included in each of the first CORESET pool and the second CORESET pool,
• wherein the first CORESET pool is associated with a serving cell, and the second CORESET pool is associated with one of the serving cell or non-serving cell.