| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mobile communication system capable of controlling the information indicating A/N or the quality for CSI flexibly, a base station device, a mobile station device, and a communication method. <P>SOLUTION: The mobile station device determines the number of bits of information indicating A/N depending on the number of serving cells and the downlink transmission mode in the serving cells, and determines the number of bits of information indicating A/N after encoding and the number of bits of channel state information after encoding, depending on the number of bits of information indicating A/N thus determined. If the number of bits of the channel state information after encoding goes below a predetermined value, the channel state information is dropped, and only the information indicating A/N is transmitted to a base station device by using a physical uplink control channel resource. <P>COPYRIGHT: (C)2013,JPO&INPIT |
