System for controlling inter cell interference in cellular mobile system

摘要

Provided is a technology that eliminates or decreases inter-cell interference through an inter-cell cooperation in a cellular mobile communication system. A terminal generates channel state information (CSI) with respect to a plurality of base station, and transmits the CSI to a serving cell. The serving cell shares the CSI with a cooperation cell, and determines a cooperation transmission mode that decreases interference from the cooperation cell.

主权项

1. An operation method of a serving cell to control interference between the serving cell and a cooperation cell, the method comprising:
determining the cooperation cell among neighboring cells of the serving cell; transmitting information on the cooperation cell to a terminal belonging to the serving cell; receiving, from the terminal, desired PMI (Precoding Matrix Indicator) information or undesired PMI information generated based on the information on the cooperation cell; and transmitting the desired PMI information or the undesired PMI information to the cooperation cell, wherein the desired PMI information indicates PMI which is to be used by the cooperation cell and the undesired PMI information indicates PMI which is not to be used by the cooperation cell.