| 摘要 |
Provided is an apparatus and method for performing an ARQ operation for a uplink (UL) signal in a multi-hop relay cellular network. Upon receipt of a UL signal from a mobile station (MS), it is determined if there is an error in the received UL signal. If there is an error in the received UL signal, the channel condition for a relay station (RS) is compared with the channel condition for the MS. If the channel condition for the RS is better than the channel condition for the MS, it is determined if the RS knows the erroneously received UL signal. If the RS knows the erroneously received UL signal, the RS is requested to retransmit the erroneously received UL signal.
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