Feedback method and apparatus for cooperative communication system

摘要

A feedback method and apparatus is provided for facilitating feedback in a Cooperative Multi-Point (CoMP) system in which multiple base stations cooperate with each other for downlink transmission to a terminal. The feedback method of a terminal includes determining whether the terminal is operating in cooperative multi-point mode for receiving data from a plurality of cells; estimating, when the terminal is operating in cooperative multi-point mode, channels of the cells belonging to a measurement set based on channel status information reference signals for the cells; selecting at least one best cell based on a signal-to-interference plus noise ratio based on the estimated channels; and feeding back a cell index and channel information of the best cell.

主权项

1. A feedback method of a terminal for cooperative communication, the method comprising:
estimating, by the terminal, channel values based on channel status information reference signals transmitted by multiple cells; calculating, by the terminal, signal-to-interference plus noise ratio per cell based on the estimated channel values; selecting, by the terminal, a best cell based on the number of other terminals operating in each cell and based on the calculated signal-to-interference plus noise ratio; and transmitting, by the terminal, feedback information including a cell index of the best cell and related channel information to a feedback reception apparatus, wherein the number of the other terminals operating in each cell is included in cell status information received from the multiple cells.