COMMUNICATION SYSTEM, BASE STATION DEVICE, TERMINAL DEVICE

摘要

A communication system in which: a second cell having a narrower region of coverage than a first cell is present in the coverage region of the first cell, which has a wide region of coverage; one or more first terminal devices positioned in the first cell receive signals pre-coded and transmitted by a first base station device for controlling the first cell; and one or more second terminal devices positioned in the second cell receive a signal pre-coded and transmitted using the same frequency as the first cell by a second base station device for controlling the second cell. The communication system is characterized in that the number of streams transmitted by the second base station device is determined on the basis of information relating to the number of streams transmitted by the first base station device. It is thereby possible to reduce interference by a simple configuration in which a transmission/reception filter is used in a system in which inter-cell interference is present.