System and method of connected mode discontinuous operation in beamformed system

A communication method of a base station, the communication method comprising:

• transmitting, to a terminal, configuration information of discontinuous reception (DRX);
• receiving, from the terminal, beam feedback information according to beam measurement before a start of an on duration of the DRX;
• and
• if the base station has downlink data to transmit, transmitting, to the terminal, a message indicating that the base station has downlink data to transmit.

A terminal comprising:

• a transceiver configured to receive and transmit a signal;
• and
• a controller configured to:
• receive, from a base station, configuration information of discontinuous reception (DRX),
• perform beam measurement before a start of an on duration of the DRX,
• transmit, to the base station, beam feedback information according to the beam measurement result, and
• perform a predetermined operation after transmitting the beam feedback information.

A base station comprising:

• a transceiver configured to receive and transmit a signal;
• and
• a controller configured to:
• transmit, to a terminal, configuration information of discontinuous reception (DRX),
• receive, from the terminal, beam feedback information according to beam measurement before a start of an on duration of the DRX, and
• if the base station has downlink data to transmit, transmit, to the terminal, a message indicating that the base station has downlink data to transmit.