For lack of a unique, specific and detailed specification for information on the status of a mobile station to be notified by the mobile station to a fixed station, the operation may be varied from one mobile station to another in a communication system, thereby posing a problem that an efficient uplink scheduling (radio resource assignment) is impossible.
In view of this, a communication method according to the present invention includes a transmission process for multiplexing a transport channel for transmitting data from a high-order layer on a physical data channel and transmitting the multiplexed result to the fixed station, a status notification process for notifying status information containing information on a transmission power headroom used for scheduling, and a transmission control process for receiving the scheduling result and controlling the transmission process, wherein the status information notification process includes a process of notifying an index attached to each predetermined transmission power headroom level classified between upper and lower limit values of the transmission power headroom as the status information.