Patent ID: 8755338

Claim:
A method of releasing an uplink radio resource in a wireless communication system, the method comprising: receiving first feedback channel allocation information from a base station (BS), the first feedback channel allocation information including a duration field set to other than 0b000 which indicates a duration of an uplink (UL) fast feedback channel; allocating the UL fast feedback channel based on the first feedback channel allocation information; receiving second feedback channel allocation information including a duration field set to 0b000 which indicates a release of the UL fast feedback channel; transmitting a release confirm message to the BS through a hybrid automatic repeat request (HARQ) feedback channel (HFBCH) for transmitting a HARQ feedback; and releasing the UL fast feedback channel, wherein a radio resource for the HFBCH comprises three distributed feedback mini-tiles (FMTs), an FMT including two subcarriers and six orthogonal frequency division multiplexing (OFDM) symbols.