Patent ID: 8761293

Claim:
A method of transmitting a feedback channel in a wireless communication system, the method comprising: measuring a modulation and coding scheme (MCS) level obtained by quantizing a carrier to interference plus noise ratio (CINR) of a mobile station, wherein the CINR is a differential CINR which is a difference value between the CINR and a reference CINR; mapping feedback information, including the MCS level, to the feedback channel, wherein the mapping feedback information to the feedback channel comprises mapping a feedback orthogonal sequence corresponding to the measured MCS level, from among a plurality of different orthogonal sequences, to 3 distributed hybrid automatic repeat request (HARM) mini-tiles (HMTs) which are uplink resources allocated to the feedback channel, wherein the HMT comprises 2 contiguous subcarrier and 2 OFDM symbols; and transmitting the feedback channel.