FEEDBACK SCHEDULING TO REDUCE FEEDBACK RATE IN MIMO SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a system and a method for scheduling feedback from a plurality of receivers.SOLUTION: In a closed-loop wireless communication system 200, a codebook-based feedback 201.1 control mechanism is provided where feedback from each of a plurality of receivers is scheduled to control the feedback so that receiving devices do not needlessly feed back precoding information to a transmitting device. The feedback may be controlled by establishing and distributing a schedule to control when each receiver feeds back precoding information, or by establishing and distributing a metric-based feedback threshold that must be satisfied before feedback is permitted.