Patent ID: 8838164

Claim:
A method for transmitting feedback information in a CoMP (Coordinated Multi-Point) operation at a user equipment (UE), the method comprising: measuring at least one of a signal strength and an interference level for each of first cells performing the CoMP operation, by using a reference signal received from each of the first cells; measuring a sum of noise and interference levels for second cells, which do not perform the CoMP operation, by using a first region to which a reference signal of a serving cell among the first cells is transmitted; and transmitting to the serving cell, at least of: the signal strength or the interference level of each of the first cells, the sum of noise and the interference levels of the second cells, and one or more specific values generated using two or more of the signal strength, the interference level of each of the first cells and the sum of the noise and interference level of the second cells, wherein data of a neighboring cell among the first cells is mapped into a region except for the first region where the reference signal of the serving cell is mapped, and wherein the reference signal of the serving cell and signals of the second cells are identified based on specific tones in the first region.