Method and apparatus for monitoring pdcch, and base station and user equipment

A method for monitoring a Physical Downlink Control Channel (PDCCH), wherein the method applies to a user equipment and comprises:

• receiving a notification signal or signaling transmitted by a base station, wherein the notification signal or signaling comprises a cell identification, a user equipment group identification, or a user equipment identification;
• and
• starting to monitor the PDCCH according to the notification signal or signaling.

A base station, comprising a memory and a processor, wherein the memory stores one or more programs, the one or more programs comprising computer instructions, which, when executed by the processor, cause the processor to:

• configure an association between a notification signal or signaling and a Physical Downlink Control Channel (PDCCH), wherein the notification signal or signaling comprises a cell identification, a user equipment group identification, or a user equipment identification;
• and
• transmit the notification signal or signaling to a user equipment, in order to notify the user equipment to start to monitor the PDCCH.