APPARATUS AND METHOD FOR FEEDING BACK CHANNEL QUALITY INFORMATION AND SCHEDULING APPARATUS AND METHOD USING THE SAME IN A WIRELESS COMMUNICATION SYSTEM

摘要

An apparatus and method are provided for feeding back channel quality information and performing scheduling using the fed-back channel quality information in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). In the OFDMA wireless communication system, forward performance degradation due to a decrease in an amount of reverse channel quality information is reduced, and also an increase in the reverse load due to channel quality information feedback is suppressed. A base station controls power of a physical channel using information fed back from a mobile station. In a method for feeding back channel quality information from the mobile station, sub-band-by-sub-band channel quality information is measured and channel-by-channel quality information of a number of channels is transmitted in order of sub-bands of better channel quality information. Average channel quality information for a total band is measured and transmitted.

主权项

1. A method for transmitting a channel quality indicator (CQI) in a wireless communication system, the method comprising:
obtaining, at a mobile station, a wideband CQI; obtaining, at the mobile station, a sub-band CQI for each of a plurality of sub-bands; and transmitting, by the mobile station, the wideband CQI and the sub-band CQI for the each of the plurality of sub-bands in a same transmission time interval, wherein the plurality of sub-bands are configured between a base station and the mobile station.