commonly to all the user terminals based on the detection results the harq recombination determiner 205 determines whether there is an harq possible mac management message among the downlink data bursts whether the corresponding data corresponds to one of the mac management messages and whether the corresponding burst is the first occurrence of the transmitted burst or a retransmitted burst corresponding to the previously received data thereafter the harq recombination determiner 205 performs the harq recombination depending on whether the newly received data in the current frame is identical to the data stored in the data buffer storage 209 due to a reception error moreover the harq recombination determiner 205 may perform harq recombination if the newly received data in the current frame is substantially identical to the data stored in the data buffer storage 209 the payload decoder 207 decodes a payload of the received mac management message also when the harq recombination of the corresponding mac management message is performed by the harq recombination determiner 205 the payload decoder 207 outputs a payload of the received mac management message to the retransmission data combiner 211 and decodes a payload of the mac management message that is harq recombined by the retransmission data combiner 211 if the decoding has failed the payload decoder 207 stores a payload of the corresponding mac.