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 method for transmitting channel information by an enhanced Node B (eNB) in a communication system, the method comprising:
transmitting, from the eNB, to a User Equipment (UE), a first transmission comprising information representative of one or more reference signals for interference measurement; transmitting, from the eNB, to the UE, a second transmission comprising physical downlink control information including an indicator for triggering an aperiodic transmission of channel information associated with at least one of the one or more reference signals for interference measurement; and receiving, at the eNB, from the UE, channel information based on at least one interference measurement of the at least one of the one or more reference signals for interference measurement on a physical uplink shared channel.