RADIO BASE STATION DEVICE, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To improve the throughput characteristic of both an overall system and a user terminal UE at a cell end at CoMP transmission.SOLUTION: A radio communication system includes a plurality of radio base station devices and a user terminal configured to be capable of cooperative multipoint transmission/reception with the plurality of radio base station devices. The user terminal transmits feedback information for each transmission point of the cooperative multipoint transmission (S23). Each radio base station device calculates the dispersion of feedback information between the transmission points of the cooperative multipoint transmission (S24), to determine a radio resource to be allocated to the user terminal according to the calculated dispersion (S25).