Patent ID: 7826797

Claim:
A communications system, comprising: a base station configured to transmit high-speed packet data through a high-speed packet data channel used for transmission of the high-speed packet data; and a mobile station configured to transmit a quality information related to a downlink including the high-speed packet data channel, which includes a Dedicated Physical Data Channel (DPDCH) and a Dedicated Physical Control Channel (DPCCH), to the base station, the high-speed packet data of the DPDCH and DPCCH being spread by a channel separating spreading code and multiplied by an identification code, wherein the base station transmits to the mobile station one of a defined set of a transmitting cycle period k for transmitting the quality information QI from the mobile station, the set comprising a plurality of integers as the transmitting cycle period, 0, 1, at least two even positive integers having no multiple relationship each other, and at least two even positive integers having the multiple relationship and being equal to or larger than the two even positive integers having no multiple relationship each other, and the mobile station is configured to transmit the quality information to the base station by using a control channel for transmitting a response signal associated with the high-speed packet data based on the transmitting cycle transmitted from the base station.