Patent ID: 8149933

Claim:
A method for subchannel assignment in an Orthogonal Frequency Division Multiplexing Access (OFDMA) system-based distributed wireless communication system equipped with antennas that are geographically distributed in a coverage area and can simultaneously communicate with multiple Subscriber Stations (SSs), the method comprising: (a) selecting and obtaining access to antennas that satisfy a data transmission rate that an SS requires and with which the SS can communicate; (b) re-queuing an antenna that transmits maximum power to the SS within the coverage area as a high priority antenna; and (c) assigning subchannels to the highest priority antenna, wherein the assigning of subchannels comprises the steps of finding subchannels used by adjacent antennas to the high priority antenna, located in sub areas adjacent to a sub area in which the high priority antenna is centered; and assigning, to the high priority antenna, subchannels excluding those used by the adjacent antennas, while assigning other subchannels to the high priority antenna even if the other subchannels are used by antennas in the coverage area located in sub areas that are non-adjacent to the sub area of the high priority antenna.