METHOD FOR ASSIGNING SUB-CARRIER IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SCHEME

摘要

In an OFDMA mobile communication system in which a total frequency band is divided into a plurality of sub-carrier bands, for signal transmission, to assign sub-carriers to MSs, a BS divides the total frequency band into L sub-frequency bands. The BS detects the channel condition of each of the MSs and determines a sub-frequency band for each MS according to the channel condition among the L sub-frequency bands. The BS assigns sub-carriers in the determined sub-frequency band at a predetermined sub-carrier spacing to each MS.