Patent ID: 7970001

Claim:
A receiving apparatus receiving data transmitted from a transmitting apparatus in a communication system where a plurality of system bandwidths are set, said receiving apparatus comprising: a calculating unit configured to calculate, using a relationship of a CQI representing channel quality and corresponding to a transport block size of the data, a subband CQI for a subband which is a set of a plurality of contiguous resource blocks, each of which is comprised of a plurality of consecutive subcarriers in a frequency domain, and a wideband CQI for an entire system bandwidth; and a transmitting unit configured to transmit the subband CQI and the wideband CQI to the transmitting apparatus; wherein said calculating unit calculates the subband CQI and the wideband CQI using the same relationship, and the wideband CQI is transmitted with a longer period than a period with which the subband CQI is transmitted.