Device and method for discovering small cell in wireless communication system

A method for operating base station in a wireless communication system, the method comprising:

• transmitting first signals for informing existence of a cell of the base station;
• and
• transmitting second signals for informing a service coverage of the cell,
• wherein the first signals are transmitted at a first time interval, and
• wherein the second signals are transmitted at a second time interval that is less than the first time interval.

An apparatus for a terminal in a wireless communication system, the apparatus comprising:

• a transceiver;
• and
• at least one processor coupled to the transceiver and configured to:
• receive, from a base station, at least one of first signals informing that are used to detect an existence of a cell;
• receive, from the base station, at least one of second signals that are used to detect a service coverage of the cell, after receiving the at least one of the first signals;
• and
• transmit a measurement report for at least one of the first signals and the second signals,
• wherein the first signals are transmitted at a first time interval, and
• wherein the second signals are transmitted at a second time interval that is less than the first time interval.