METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION (CSI) IN RADIO COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method and user apparatus for reporting channel state information (CSI) in a radio communication system that supports a cooperative multipoint.SOLUTION: A method for a user apparatus to transmit channel state information (CSI) in a radio communication system receives channel state information reference signal (CSI-RS) from a base station, estimates the overhead of a resource element of a common reference signal (CRS) as the same antenna port number as an antenna port number related to the CSI-RS, and transmits the CSI on the basis of the estimated overhead of the CRS resource element.SELECTED DRAWING: Figure 12