MOBILE STATION DEVICE, BASE STATION DEVICE, RADIO COMMUNICATION METHOD AND COMMUNICATION PROGRAM

摘要

Transmission power of a plurality of uplink carrier components used for radio communication by a mobile station device and a base station device is efficiently controlled. The mobile station device communicates by radio with the base station device using a plurality of carrier component bands that are predetermined frequency bands. The mobile station device is provided with a radio resource control unit which manages an identifier for identifying the information format of a control channel for transmission power control and the fields for transmission power control of a plurality of uplink carrier components of the mobile station device in the information format, the identifier and the fields being assigned by the base station device, a reception processing unit which receives the control channel of the information format, and a transmission power control unit which, on the basis of transmission power control information included in the fields for transmission power control of the plurality of uplink carrier components, controls the transmission power of each of the uplink carrier components.