a priority of a second beam to be formed by the base station b each base station does not allocate the same priority signal to the same resource accordingly resource allocation is possible with easy interference cancellation while receiving the first beam and the first priority signal transmitted from the base station a if the terminal a receives the second beam and the second priority signal transmitted from the base station b the terminal a may cancel interference on the second beam by using reference information regarding the second beam s 2230 since the second beam has a low priority and thus is formed in a sharp shape in which a beam width is narrow an interference magnitude is great in this case a signal for the second beam may be easily recovered by using reference information if a signal of an inner resource is beamformed in the base station a the base station a may perform frequency hopping on the signal of the inner resource s 2240 unlike a terminal to which the outer resource is allocated the terminal a which receives the signal of the inner resource does not have information e g a reference signal of an interference signal capable of cancelling interference caused by a neighboring cell and thus has a difficulty in coping with interference accordingly the base station a of a corresponding cell may decrease interference caused by the terminal a by changing a terminal to which a resource.