WIRELESS COMMUNICATION SYSTEM, WIRELESS BASE STATION DEVICE, USER TERMINAL AND WIRELESS COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To reduce overhead of CSI feedback without lowering the throughput during application of CoMP transmission.

SOLUTION: In the wireless communication method, a wireless base station device determines the content of CSI being fed back to a serving cell performing CoMP transmission so as to be different from the content of CSI being fed back to a coordination cell, and notifies the content of CSI of a user terminal. The user terminal generates feedback information based on the content of CSI notified from the wireless base station device, and transmits the feedback information to the wireless base station device of a cell performing CoMP transmission.

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