Wireless communication system, mobile station, base station and wireless communication method

摘要

In a wireless communication system capable of wireless communication by using multiple frequency bands at the same time, a mobile station includes an uplink transmitting unit, which transmits allowable power difference between frequency bands and limitation node information indicating an object of power limitation in transmission power control of the mobile station to a base station, and a transmission-power control unit, which controls transmission power on the basis of a TPC command received from the base station, and the base station includes a TPC-command generating unit, which generates a TPC command on the basis of the allowable power difference between frequency bands and the limitation mode information, and a transmitting unit, which transmits the TPC command to the mobile station.

主权项

1. A wireless communication system capable of wireless communication between a mobile station and a base station by using multiple frequency bands at the same time, wherein
the mobile station includes:
a baseband unit that synthesizes a plurality of signals of the multiple frequency bands;an uplink transmitting unit that transmits to the base station allowable power difference between frequency bands and mode information indicating an object of power limitation which differs depending on whether the baseband unit synthesizes a plurality of signals of frequency domain or a plurality of signals of time domain, the object of power limitation being a transmission power value when the baseband unit is configured to synthesize the signals of time domain obtained by performing the inverse Fourier transform on the signals of frequency domain, the object of power limitation being a power spectral density of the transmission power value when the baseband unit is configured to synthesize the signals of frequency domain by performing the inverse Fourier transform having a size to cover all frequency of the signals of frequency domain; anda transmission-power control unit that controls transmission power based on a transmission power control command received from the base station, and the base station includes:
a generating unit that generates a transmission power control command to limit difference in the transmission power value between the frequency bands within the allowable power difference when the mode information indicates the object of power limitation is the transmission power value, and generates a transmission power control command to limit difference in the power spectral density of the transmission power value between the frequency bands within the allowable power difference when the mode information indicates the object of power limitation is the power spectral density of the transmission power value; anda downlink transmitting unit that transmits the transmission power control command to the mobile station.