Patent ID: 8553609

Claim:
A method for transmitting control signaling in a backhaul link of a relay system, the method comprising: determining, by a base station, control signaling to be transmitted on a Relay Physical Downlink Control Channel, R-PDCCH, in a current backhaul link; determining, by the base station, an R-PDCCH resource sub-region corresponding to the control signaling to be transmitted among as plurality of R-PDCCH resource sub-regions, into which a resource region occupied by the R-PDCCH is divided, according to a preset correspondence relationship between the control signaling and the R-PDCCH resource sub-region; and transmitting, by the base station, the control signaling to be transmitted to a relay node by using time-frequency resources in the determined R-PDCCH resource sub-region, wherein the resource region occupied by the R-PDCCH is divided into two R-PDCCH resource sub-regions, wherein a first R-PDCCH resource sub-region among the two R-PDCCH resource sub-regions is located preceding a second R-PDCCH resource sub-region in the time domain; and wherein the preset correspondence relationship comprises a correspondence relationship between a first category of control signaling and the first R-PDCCH resource sub-region and a correspondence relationship between a second category of control signaling and the second R-PDCCH resource sub-region, wherein the first category of control signaling has a higher demodulation delay requirement than that of the second category of control signaling.