Patent ID: 7423991

Claim:
A method of allocating one or more subchannels to one or more mobile stations (MSs) in an orthogonal frequency division multiple access (OFDMA) mobile communication system in which a first base station (BS) communicates with a plurality of MSs within a cell area of the BS and a radio network controller (RNC) controls radio resources for a plurality of BSs including the first BS, the method comprising the steps of: receiving from the plurality of MSs information related to an optimum frequency reuse factor (FRF) and a modulation scheme; calculating the number of subchannels required for each FRF according to the received information; allocating subchannels to the first BS for each FRF, based on the calculated subchannel numbers from the first BS and neighboring BSs; and allocating the allocated subchannels to the MSs.