D2Ddevice-to-device A METHOD OF TRANSMITTING A SYNCHRONIZATION SIGNAL FOR A DEVICE-TO-DEVICE OPERATION PERFORMED BY A USER EQUIPMENT IN A WIRELESS COMMUNICATION SYSTEM AND THE USER QUIPMENT USING THE SAME

摘要

A method for transmitting a synchronization signal for a device-to-device (D2D) operation in a wireless communication system and a terminal using the method are provided. The method includes establishing a radio resource control (RRC) connection with a first cell of a first frequency and transmitting a synchronization signal (D2D synchronization signal: D2DSS) for a D2D operation in a second cell of a second frequency, And determines whether to transmit the D2DSS based on a reference signal received power (RSRP) of a reference signal received from the second cell when the frequency is different from the first frequency.