Method for transmitting and receiving D2D signal in wireless communication system, and apparatus therefor

A first device to device (D2D) user equipment (UE) in a wireless communication system, the first D2D user equipment comprising:

• a radio frequency unit;
• and
• a processor configured to:
• configure discontinuous reception (DRX) cycle based on a higher layer signal,
• receive physical downlink control channel (PDCCH) in a duration based on the configured DRX cycle from a base station using a first carrier, wherein a timer for the duration is counted based on PDCCH consecutive subframes, and the PDCCH is monitored in the consecutive PDCCH subframes,
• communicate with the base station using the first carrier based on the configured DRX cycle, and
• communicate with a second D2D UE using a second carrier, wherein the first D2D UE includes a D2D dedicated radio frequency chain,
• wherein the D2D dedicated radio frequency chain is turned on on a first subframe included in the consecutive PDCCH subframes, and is turned off on a second subframe included in the consecutive PDCCH subframes for communicating with the second D2D UE, and
• wherein the first subframe and the second subframe are excluded from the consecutive subframes of the timer for the duration, and the PDCCH is monitored in the consecutive PDCCH subframes except for the first subframe and the second subframe.