Inter-cell interference coordination method and apparatus for wireless communication system

An inter-cell interference mitigation apparatus for a wireless communication system, comprising:

• a message processor that receives an incoming power control message and an interference coordination message transmitted by a neighbor base station, transmits an outgoing interference coordination message to the neighbor base station, and receives signal strength information from a user equipment, wherein the signal strength information comprises strength of a signal that the user equipment received from the neighbor base station;
• an interference processor that extracts an interference indicator from the incoming interference coordination message, wherein the interference indicator corresponds to a respective one of a plurality of resource blocks;
• and
• a scheduler which allocates one or more of the resource blocks to the user equipment in a cell with transmission power per resource block based on the interference indicator and generates the outgoing interference coordination messages based on the resource block allocation result and the signal strength.

An inter-cell interference mitigation method for a wireless communication system, comprising the steps of:

• receiving, at a serving base station, power control messages transmitted by neighbor base stations;
• receiving, by the serving base station, incoming interference coordination messages transmitted by the neighbor base stations, wherein each of the incoming interference coordination messages comprises a plurality of interference indicators, each of the plurality of interference indicators corresponds to a respective one of a plurality of resource blocks, and each of the plurality of interference indicators is set to one of a use state, a non-use state and an interference state;
• allocating, by the serving base station, one or more of the plurality of resource blocks with transmission power per resource block to user equipments served by the serving base station based on the power control messages and the incoming interference coordination messages;
• generating, by the serving base station, outgoing interference coordination messages for the neighbor base stations based on the resource block allocation result;
• and
• transmitting, by the serving base station, the outgoing interference coordination messages to the neighbor base stations, respectively.

An inter-cell interference mitigation apparatus for a wireless communication system, comprising:

• a message processor that receives incoming power control messages and incoming interference coordination messages transmitted by neighbor base stations and transmits outgoing interference coordination messages to the neighbor base stations;
• an interference processor that extracts interference indicators from the incoming interference coordination messages, wherein each of the interference indicators corresponds to a respective one of a plurality of resource blocks, and each of the interference indicators is set to one of a use state, a non-use state and an interference state;
• and
• a scheduler which allocates one or more of the plurality resource blocks to user equipments in a cell with transmission power per resource block based on the interference indicators and generates the outgoing interference coordination messages.