Base station equipment, terminal equipment, resource allocation method and the response signal transmission method

摘要

more even when performing the allocation of downlink data using ePDCCH of CC, a base station apparatus capable of improving resource use efficiency of the uplink. In this apparatus, the control unit (150), an index indicating a response signal resources to be used for transmission of response signals to downlink data of a plurality of CC, generated for at least a second CC, the transmitting unit (160) sends the control information, including the index. Of the terminal of the plurality of CC, when receiving control information in a single second CC alone or two or more of the CC, the response signal resources in the terminal is determined based on an index of the second CC . Control unit (150), in the indication of the second CC, the first resource for the response signal transmission to downlink data transmitted with only a single CC, or, downlink transmitted in each of a plurality of CC a second resource of the plurality of response signals for transmission to the line data, specified as a response signal resources.