Relay station, relay method, radio communication system, and radio communication apparatus
摘要
說明書
In the third scenario, the relay station 100 first receives data D3 from the source node TxA by using the SC-FDMA method (step S222). Next, the relay station 100 transmits the data D3 to the destination node RxA by using, for example, the OFDMA method (step S224). Assume here that an error is detected when a reception signal is demodulated/decoded in the destination node RxA. In such a case, the destination node RxA transmits a retransmission request of the data D3 to the relay station 100 by using, for example, the SC-FDMA method (step S226). Then, the relay station 100 retransmits the data D3 by using, for example, the SC-FDMA method (step S228). Also in this scenario, like the second scenario, communication resources consumed for retransmission control are saved. Moreover, according to the present embodiment, like the second and third scenarios, a modulation and/or multiplexing method different from the method used for receiving a signal can be used for a retransmission request and thus, reliability of data retransmission can be increased.
