TERMINAL APPARATUS AND RESPONSE SIGNAL TRANSMITTING METHOD

摘要

Disclosed are a terminal apparatus and a response signal transmitting method that can reduce the signaling overheads related to a bundling group in a communication system to which a partial bundling is applied. In a terminal (200), a bundling control unit (212), which serves as a generating means for generating a response signal, generates, based on a bundling rule according to which bundling groups are associated with downstream unit bands constituting unit band groups, a bundle of ACK/NACK signals obtained by bundling the error detection results of active downstream unit bands included in the same bundling group, out of active downstream unit band groups constituted by active downstream unit bands.