US 2009/0215480 A1 · Method for reducing inter-cell interference

Abstract

A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

Claims10

Dependent claims

A method for a mobile station to mitigate inter-cell interference in a multi-cell environment, the method comprising:

measuring a channel from at least one neighboring base station generating interference with a signal from a serving base station;
and
calculating an interference value based on the measured channel and transmitting the interference value to the serving base station;
wherein the interference value is used to determine priority for selection of a precoding matrix index in each base station, and information about the priority is transmitted from the serving base station to the at least one neighboring base station.

1 more element

Dependencies are inferred from the claim text.

Method for reducing inter-cell interference

Life of this patent

Method for reducing inter-cell interference

Life of this patent

Abstract

Claims10