Patent ID: 7941100

Claim:
A mobile station configured to transmit downlink quality information to a base station, the mobile station comprising: a receiving unit configured (a) to receive a transmission cycle which determines transmission timing of the downlink quality information, the transmission cycle is selected based on a set including 0, 1, at least two positive integers having no multiple relationship to each other, and at least two positive integers having a multiple relationship to each other and being equal to or larger than the two positive integers having no multiple relationship, and (b) to receive high-speed packet data transmitted from the base station using a high-speed packet data channel; and a transmitting unit configured (a) to transmit, to the base station using a control channel, a response signal associated with the high-speed packet data received by the receiving unit, and (b) to transmit, to the base station using the control channel, the downlink quality information in a subframe where a domain for the response signal and a domain for the downlink quality information are provided in separate data fields of the subframe, wherein the downlink quality information is transmitted by the transmitting unit in accordance with the transmission cycle received by the receiving unit.