METHOD AND APPARATUS FOR INTERFERENCE MITIGATION IN WIRELESS COMMUNICATION SYSTEM INCLUDING HETEROGENEOUS NETWORK

摘要

Provided are a method and apparatus for mitigating the interference of an interfering base station (eNB) in a heterogeneous network. The method comprises the steps of: transmitting threshold value information to an interfered eNB; receiving second feedback information, which takes into account interference caused by the interfering eNB to an interfered user equipment (UE) selected by the interfered eNB, from the interfered UE on the basis of the threshold value information and first feedback information; selecting a precoding matrix for minimizing interference to the interfered UE on the basis of the second feedback information; and applying the precoding matrix and transmitting a signal to an UE, to which the interfering eNB provides service, wherein the first feedback information is information which the interfered UE obtains by measuring a reference signal of the interfering eNB and a reference signal of the interfered eNB and comparing the reception power thereof, and the interfered UE selected by the interfered eNB is a UE, the first feedback information of which satisfies a comparison condition with the threshold value, among UEs to which the interfered eNB provides service.