Method of transmitting and receiving downlink control channel and apparatus therefor

A user equipment (UE) comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one memory operably connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising:
• receiving, through the at least one transceiver, a parameter related to discontinuous reception (DRX) operation through a higher layer;
• receiving, through the at least one transceiver, first downlink control information (DCI) comprising information related to physical downlink control channel (PDCCH) monitoring adaptation;
• receiving, through the at least one transceiver, second DCI for scheduling a physical downlink shared channel (PDSCH) within a DRX active time of the DRX operation, based on the PDCCH monitoring adaptation;
• and
• receiving, through the at least one transceiver, the PDSCH based on the second DCI,
• wherein the UE determines a starting point of a time duration in which the PDCCH monitoring adaptation is performed, based on whether the first DCI is configured as a wake-up signal (WUS).

A base station comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one memory operably connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising:
• transmitting, to a user equipment (UE) through the at least one transceiver, a parameter related to discontinuous reception (DRX) operation through a higher layer;
• transmitting, to the UE through the at least one transceiver, first downlink control information (DCI) comprising information related to physical downlink control channel (PDCCH) monitoring adaptation;
• transmitting, to the UE through the at least one transceiver, second DCI for scheduling a physical downlink shared channel (PDSCH) within a DRX active time of the DRX operation, based on the PDCCH monitoring adaptation of the UE;
• and
• transmitting, through the at least one transceiver, the PDSCH based on the second DCI,
• wherein the BS determines a starting point of a time duration in which the PDCCH monitoring adaptation of the UE is performed, based on whether the first DCI is configured as a wake-up signal (WUS).