| 摘要 |
PROBLEM TO BE SOLVED: To obtain a base station which enables more stable transmission and reception with a reduced number of retransmission times. SOLUTION: The base station 1 prepares next transmission based on the ACK/NACK and the CQI of data returned from a terminal station 2. The station comprises an ACK/NACK decider 15 for deciding whether transmission data are properly received at the receive side based on the ACK/NACK after demodulation; a CQI decoder 16 for decoding the CQI after demodulation; and a transmission controller 11 which decides whether the next transmission is the first transmission or the retransmission of data based on the decision result at the ACK/NACK decider 15, and decided as the retransmission, adaptively updates a transmission data size and a modulation system based on the decoding result at the decoder 16. COPYRIGHT: (C)2005,JPO&NCIPI
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