The present invention is summarized as a radio communication method including the steps of: calculating a transmission power difference between transmission powers of a first carrier and a second carrier; determining whether or not the transmission power difference exceeds a threshold set on the basis of a maximum transmission power difference allowable between the first carrier and the second carrier; and when the transmission power difference exceeds the threshold set on the basis of the maximum transmission power difference, assigning a first time frame used for transmitting reverse link data by using the first carrier and a second time frame used for transmitting reveres link data by using the second carrier in a manner that the two times frames do not overlap with each other on the time axis.