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

A wireless communication system, capable of wireless communication between a base station and a mobile station by using multiple frequency bands at the same time, wherein

• the base station includes:
• a generating unit that generates a transmission power control command;
• and
• a downlink transmitting unit that transmits the transmission power control command to the mobile station, and
• the mobile station includes:
• a receiving unit that receives a transmission power control command from the base station;
• and
• a transmission-power control unit that, when the receiving unit has received a transmission power control command, limits a power value subject to power limitation on the basis of allowable power difference between frequency bands, and controls transmission power on the basis of a result of the limiting process.

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 an uplink transmitting unit that transmits allowable power difference between frequency bands to the base station,
• the base station includes:
• a generating unit that generates a first transmission power control command corresponding to a first object of power limitation and a second transmission power control command corresponding to a second object of power limitation in parallel on the basis of the allowable power difference between frequency bands;
• and
• a downlink transmitting unit that transmits the first and second transmission power control commands generated by the generating unit to the mobile station, and
• the mobile station further includes;
• a receiving unit that receives the first and second transmission power control commands from the base station;
• and
• a transmission-power control unit that detects a desired transmission power control command corresponding to an object of power limitation in transmission power control of the mobile station from the first and second transmission power control commands, and controls transmission power on the basis of a result of the detection.

A mobile station capable of transmitting and receiving radio signals by using multiple frequency bands at the same time, the mobile station comprising:

• a transmitting unit that transmits allowable power difference between frequency bands to a base station;
• a receiving unit that receives a first transmission power control command corresponding to a first object of power limitation and a second transmission power control command, corresponding to a second object of power limitation which have been generated in parallel by the base station on the basis of the allowable power difference between frequency bands;
• and
• a transmission-power control unit that detects a desired transmission power control command corresponding to an object of power limitation in transmission power control of the mobile station from the first and second transmission power control commands, and controls transmission power on the basis of a result of the detection.

A wireless communication method in 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, the wireless communication method comprising:

• the mobile station transmitting allowable power difference between frequency bands and mode information indicating an object of power limitation in transmission power control of the mobile station to the base station;
• the base station generating a transmission power control command on the basis of the allowable power difference between frequency bands and the mode information and transmitting the transmission power control command to the mobile station;
• and
• the mobile station controlling transmission power on the basis of the transmission power control command received from the base station.

A wireless communication method in 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, the wireless communication method comprising:

• the mobile station transmitting allowable power difference between frequency bands to the base station;
• the base station generating a first transmission power control command corresponding to a first object of power limitation and a second transmission power control command corresponding to a second object of power limitation in parallel on the basis of the allowable power difference between frequency bands and transmitting the first and second transmission power control commands to the mobile station;
• and
• the mobile station receiving the first and second transmission power control commands from the base station, detecting a desired transmission power control command corresponding to an object of power limitation in transmission power control of the mobile station from the first and second transmission power control commands, and controlling transmission power on the basis of a result of the detection.