1. A communication method for at least one mobile station that comprises a target mobile station that performs a Cooperative Multi-Point (CoMP) communication with at least two base stations, the communication method comprising: recognizing channel vectors between antennas installed in the target mobile station and the at least two base stations, and at least one channel matrix between at least one other mobile station and the at least two base stations; and determining a beamforming vector based on the channel vectors and the at least one channel matrix such that a signal-to-leakage-plus-noise-ratio (SLNR) for a target antenna from among the antennas is maximized, wherein the beamforming vector is used by the at least two base stations.