| 主权项 |
1. A method for operating a relay station (RS) in a wireless communication system, the method comprising:
obtaining subframe information and control channel element (CCE) information from a base station (BS), wherein the subframe information indicates assigned subframes which are located at fixed positions within a certain number of contiguous radio frames, and the CCE information indicates a number, N, corresponding to a number of CCEs, to be monitored in the assigned subframes for a relay-physical downlink control channel (R-PDCCH), and wherein the R-PDCCH carries radio resource allocation information regarding a radio resource allocation within the assigned subframes; monitoring the N CCEs in each of the assigned subframes for the R-PDCCH, the N CCEs being a monitoring unit of the R-PDCCH; and receiving data from the base station on the basis of the radio resource allocation information of the R-PDCCH, wherein when the number of CCEs to be monitored in a physical downlink control channel (PDCCH) for a user equipment (UE) comprises 1, 2, 4 and 8 CCEs, the number, N, indicated by the CCE information is restricted to either 4 or 8, wherein the radio resource allocation information is received through a RS downlink control information (DCI) format, and wherein a number of bits of a field included in the RS DCI format is smaller than a number of bits of a corresponding field included in a UE DCI format which is used for radio resource allocation for the UE. |
