Mobile station, fixed station, communication system and communication method

摘要

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 5 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 10 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 15 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. SI SIGNALLING TRANSMISSION POWER INFORMATION HEADROOM VALUE (a) (Reserved) (Reserved) 0 0 a