Patent ID: 8064406

Claim:
A method of transmitting a channel quality indicator (CQI) in a wireless communication system, the method comprising: obtaining CQIs for each of a plurality of sub-bands, a sub-band comprising a plurality of sub-carriers; dividing the plurality of sub-bands into a plurality of layers according to a CQI of a sub-band, a layer comprising at least one sub-band; obtaining a representative value of a representative layer, the representative layer including a sub-band having maximum CQI, wherein the representative value of the representative layer is an average value of CQIs of sub-bands belonging to the representative layer; obtaining a representative value of a second layer, wherein an average value of CQIs of sub-bands belonging to the second layer is smaller than the representative value of the representative layer and representative value of the second layer is a difference value between the representative value of the representative layer and the average value of CQIs of sub-bands belonging to the second layer; transmitting the representative value of the representative layer; and transmitting the representative value of the second layer.