| 摘要 |
PROBLEM TO BE SOLVED: To provide optimal feedback of channel state information of each CoMP cell during the application of CoMP transmission.SOLUTION: The wireless communication system comprises a plurality of wireless base station devices, and a user terminal configured to be capable of coordinated multipoint transmission and reception with the plurality of wireless base station devices. The user terminal includes: an acquisition unit for acquiring channel state information of each of a plurality of cells; a generation unit which generates feedback information combining at least part of the acquired channel state information of the plurality of cells for transmission in the same subframe; and a transmission unit which periodically feeds back the generated feedback information to a wireless base station device, which is one of the coordinated multipoints, using a physical uplink control channel. The wireless base station devices are configured to have an updating unit which updates channel state information using the channel state information fed back from the user terminal. |
