A method for dynamic channel allocation in a ofdma mobile communication system

摘要

A dynamic channel allocation method in an OFDM access mobile communication system is provided to enable a mobile station to provide channel gain change value, at channel state measuring points distributed within a total frequency band, as feed back information, and enable a base station to estimate a channel environment based on the channel gain change value and allocate optimal resources to the mobile station according to the estimated channel environment, thereby reducing the feedback information and compensating for performance attenuation which may occur due to a reduction of feedback information. A method for transmitting feedback information in a mobile communication system comprises the following steps of: dividing a total frequency band into the first frequency band and the second frequency band based on an arbitrary frequency existing within the total frequency band, and measuring channel gains at channel state measuring points existing on the first and second frequency bands(510); and determining channel state bit values, showing channel gain changes at each channel state measuring point, by comparing a channel gain at each channel state measuring point with a channel gain at the previous channel state measuring point, and then reporting the channel state bit values, determined at each channel state measuring point, as the feedback information to a base station(512,514).