Patent ID: 8320336

Claim:
A method for transmitting a control channel, the method comprising: acquiring information of at least one control channel and phase rotation value information, the at least one control channel supporting additional information transmission through phase rotation and the phase rotation value information representing the additional information; transmitting control information through one of the at least one control channel; transmitting the additional information through phase rotation of the control information; receiving a bandwidth allocation information element (IE) that includes a channel quality indicatior channel identifier (CQICH_ID); transmitting a bandwidth request header using the CQICH_ID; and receiving allocation of a bandwidth according to the bandwidth request header, wherein the at least one control channel includes a channel quality indicator channel (CQICH) and an acknowledgement/negative acknowledgement (ACK/NACK) channel, wherein the one at least one control channel is the CQICH, wherein the additional information is bandwidth request information, and wherein the phase rotation value information corresponds to the bandwidth request information.