TERMINAL DEVICE, BASE STATION DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD

摘要

Provided is a terminal with which, by carrying out a PUCCH detection in a base station with a single upstream unit band, it is possible to alleviate degradation of PUCCH detection precision in the base station. A control unit (208) employs instruction information which instructs a unit band which is employed in the transmission of a response signal to transmit the response signal. A first unit band and a second unit band which differs from the first unit band are included in the plurality of unit bands. The first unit band is employed in the transmission of the response signal when downstream data is simultaneously assigned to both the first unit band and the second unit band. When at least the second unit band downstream circuit data is assigned, the second unit band is employed in making a notification of the instruction information. When the downstream circuit data is simultaneously assigned to both the first unit band and the second unit band, the unit band which is denoted in the instruction information is the first unit band.