Patent ID: 8588205

Claim:
A method, comprising: estimating uplink channel quality based on a fast feedback channel transmitted by a mobile station in a wireless OFDMA system, wherein the fast feedback channel is allocated at a first location in an uplink subframe; and transmitting a power control message by a base station to the mobile station, wherein the power control message is transmitted in response to the estimated uplink channel information and is allocated at a second location in a downlink subframe, wherein the second location is located after the first location with a delay time, wherein the first location is associated with a first frame index, a first subframe index, and a first channel index, wherein the second location is associated with a second frame index, a second subframe index, and a second channel index, and wherein the second frame index, the second subframe index, and the second channel index are determined based on the first frame index, the first subframe index, the first channel index, and the delay time.