Method for monitoring physical downlink control channel of discontinuous reception-configured terminal and device using method

A user equipment (UE) configured with a discontinuous reception (DRX) mode operation, the UE comprising:

• a transceiver for transmitting and receiving a wireless signal;
• and
• a processor being operatively connected to the transceiver,
• wherein the processor is configured to:
• receive first information defining where to search for first PDCCH candidates, the first information comprising information for PDCCH monitoring occasions for detection of a first downlink control information (DCI) format including a first wake up indication;
• perform first PDCCH monitoring for detection of the first DCI format in at least one PDCCH monitoring occasion informed by the first information, wherein the at least one PDCCH monitoring occasion is located within a certain amount of time prior to a slot where a first DRX-on duration timer would start;
• perform second PDCCH monitoring for detection of a second DCI format while the first DRX-on duration timer is running based on a value of the first wake up indication;
• receive second information defining where to search for second PDCCH candidates, the second information comprising information for PDCCH monitoring occasions for detection of a third DCI format including a second wake up indication;
• skipping third PDCCH monitoring for detection of the third DCI format based on not having any PDCCH monitoring occasions for detection of the third DCI format within a certain amount of time prior to a slot where a second DRX-on duration timer would start;
• and
• perform fourth PDCCH monitoring for detection of a fourth DCI format while the second DRX-on duration timer is running.

An apparatus operating in a wireless communication system, comprising:

• a processor;
• and
• a memory coupled with the processor,
• wherein the processor is configured to:
• receive first information defining where to search for first PDCCH candidates, the first information comprising information for PDCCH monitoring occasions for detection of a first downlink control information (DCI) format including a first wake up indication;
• perform first PDCCH monitoring for detection of the first DCI format in at least one PDCCH monitoring occasion informed by the first information, wherein the at least one PDCCH monitoring occasion is located within a certain amount of time prior to a slot where a first DRX-on duration timer would start;
• perform second PDCCH monitoring for detection of a second DCI format while the first DRX-on duration timer is running based on a value of the first wake up indication;
• receive second information defining where to search for second PDCCH candidates, the second information comprising information for PDCCH monitoring occasions for detection of a third DCI format including a second wake up indication;
• skipping third PDCCH monitoring for detection of the third DCI format based on not having any PDCCH monitoring occasions for detection of the third DCI format within a certain amount of time prior to a slot where a second DRX-on duration timer would start;
• and
• perform fourth PDCCH monitoring for detection of a fourth DCI format while the second DRX-on duration timer is running.