The base station which assures the utilization improvement of efficiency of frequency, subcarrier allotment manner and that the subcarrier allotment program is offered are designated as topic. In order to solve this topic, controlling the transmitter or the receiver and the transmitter or the receiver radio communication with the mobile stations, by comparison with whichever subchannel which is included in the 1st subchannel group which the contiguity base station which is the base station which it adjoins uses for the radio communication with the mobile stations, being the subchannel where combination of the subcarrier which is allocated differs, it uses the base station which has the control section which makes radio communication run with the mobile stations as the subcarrier which is allocated to each subchannel which is included in the 1st subchannel group making use of the subchannel which includes the same subcarrier.
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