Patent ID: 8831654

Claim:
A method of multi cell cooperation in a user equipment (UE), comprising: receiving, by the UE, transmission beam forming information from a first cooperative cell; generating, by the UE, serving cell feedback information and cooperative cell feedback information based on the transmission beam forming information; transmitting, by the UE, the serving cell feedback information to a serving cell; and transmitting, by the UE, the cooperative cell feedback information to a second cooperative cell, wherein the transmission beam forming information includes information on a first precoding matrix used by the first cooperative cell, wherein the cooperative cell feedback information includes information on a second precoding matrix selected such that a first channel direction matches with a second channel direction, the first channel direction being defined between the second cooperative cell and the UE, the second channel direction being defined between the first cooperative cell and the UE, and wherein the first precoding matrix is applied to the first cooperative cell.