Reference signal measurement method and apparatus for use in wireless communication system including plural base stations with distributed antennas

摘要

An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal.

主权项

1. A method for a terminal in a mobile communication system, the method comprising:
receiving information on a rank indicator/precoding matrix indicator (RI/PMI) disabled mode for the terminal from a base station; determining whether configuration information on measuring the channel is received; identifying a reference signal for measuring the channel between a cell-specific reference signal (CRS) and a channel status information reference signal (CSI-RS) based on a result of the determination; and generating channel information based on the identified reference signal.