Patent ID: 8797984

Claim:
A method for transmitting and receiving a signal in a downlink subframe at a relay in a wireless communication system, the method comprising: transmitting, by the relay, a first Physical Downlink Control CHannel (PDCCH) in a downlink subframe to User Equipments (UEs) within a relay cell; and receiving, by the relay, a second PDCCH or a Physical Downlink Shared CHannel (PDSCH) from a Base Station (BS) after a first guard time following the first PDCCH, wherein a second guard time is allocated after the second PDCCH or the PDSCH received from the BS in the downlink subframe and the relay receives the second PDCCH in a first predetermined number of symbols according to specific control channel region information received from the BS, and wherein the first PDCCH is transmitted after the sum of a time corresponding to a propagation delay from the start of the downlink subframe and a time corresponding to a specific number of symbols.