APPARATUS AND METHOD FOR ALLOCATING FEEDBACK CHANNEL IN BROADBAND WIRELESS COMMUNICATION SYSTEM

摘要

An apparatus and a method for allocating feedback channels in a broadband wireless communication system are provided to allocate a limited number of CQI(Channel Quality Information) channels to more terminals by adjusting the CQI feedback cycle of each terminal according to its channel variation speed. A scheduler in a base station comprises a channel variation speed calculator(304), a feedback cycle determiner(306), and a channel allocator(308). The channel variation speed calculator obtains a channel variation speed value, based on the CQI fed back from a terminal. Using the obtained channel variation speed value, the feedback cycle determiner determines the CQI feedback cycle of the terminal. The channel allocator allocates a CQI channel to the terminal according to the determined CQI feedback cycle.