METHOD AND SYSTEM FOR INTERFERENCE COORDINATION IN A WIRELESS LTE-TDD SYSTEM

摘要

This application provides a method of information exchange among cells via backhaul by conveying the interference information indicating the interference caused by different TDD D/U allocations between neighboring base stations. In this method, a first cell sends a message to a second cell, the message including information of the first cell's subframe allocation that indicates the subframe type such as downlink, uplink or special subframe in the first cell. The second cell (the recipient of this message) then provides feedback in the form of a Subframe Interference Indicator to the first cell, which indicates the interference observed in those subframes possibly caused by downlink transmission in the neighboring first cell. The first cell then takes this feedback message into account when scheduling its own UEs by, e.g., adjusting its transmission power or changing the type of certain subframes from downlink to uplink for interference mitigation purpose.