Patent ID: 8036171

Claim:
A frequency division multiple access type multicarrier communication base station device that multiplexes a plurality of mobile stations on a frequency-time axis by using a plurality of subcarriers, comprising: a transmission rate information administration unit that administers transmission rate information of each subcarrier for each mobile station; and a subcarrier allocation unit that allocates each subcarrier based on the transmission rate information, wherein at least one of the transmission rate information administration unit and the subcarrier allocation unit is implemented at least in hardware, wherein the subcarrier allocation unit comprises: selection unit that selects one or a plurality of candidate subcarriers to be allocated based on the transmission rate information of each mobile station; evaluation value calculation unit that calculates, for each mobile station, a reference value for transmission rates of the respective mobile station on the one or the plurality of candidate subcarriers and then calculates, for each mobile station, an evaluation value that is obtained by evaluating a difference between the respective reference value and one or a plurality of transmission rates of one or a plurality of subcarriers excluded from allocation; and priority determination unit that determines a priority of the respective mobile station to be allocated each candidate subcarrier based on the respective evaluation value calculated by the evaluation value calculation unit.