Method and apparatus for transmitting and receiving data in wireless communication system supporting unlicensed band

A method for transmitting a measurement result by a user equipment (UE) in a wireless communication system, the method comprising:

• transmitting a measurement gap request message to a base station, when a signal strength of a licensed-band cell measured by the UE is a reference value or higher;
• receiving, from the base station, an activation command to activate at least one measurement gap for a measurement of an unlicensed band in response to the measurement gap request message, wherein the at least one measurement gap is at least one of a plurality of measurement gaps set for measurement of a licensed band;
• measuring the unlicensed band in the activated at least one measurement gap based on the activation command;
• and
• transmitting, to the base station, a measurement result of the unlicensed band.

A base station for receiving a measurement result of a user equipment (UE) in a wireless communication system, the base station comprising:

• a transceiver configured to transmit or receive data;
• and
• at least one processor configured to:
• control to receive a measurement gap request message from the UE, when a signal strength of a licensed-band cell measured by the UE is a reference value or higher,
• allocate, for measurement of an unlicensed band, at least one of a plurality of measurement gaps set for measurement of a licensed band in response to the measurement gap request message,
• control to transmit, to the UE, an activation command to activate the allocated at least one measurement gap for the measurement of the unlicensed band, and
• control to receive, from the UE, a measurement result of the unlicensed band that is measured by the UE in the activated at least one measurement gap.