| 摘要 |
In a communication system of the OFDMA communication method, even when transmission data is decreased temporarily and then increased again while communication by a user terminal is in progress, the communication can be continued without lowering the communication throughput of the user terminal and the throughput corresponding to QoS can be provided to the user terminal. The OFDMA communication system for performing data communication using one or more subchannels between a base station (1) and a plurality of terminals includes a communication data amount acquisition unit that acquires a communication data amount and a channel allocation unit that allocates the subchannels according to the communication data amount. When the communication data amount has decreased, the channel allocation unit maintains allocation of at least one of the allocated subchannels.
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