| 摘要 |
In a communication system, a first cell that covers a wide region includes, in a cover region thereof, a second cell that covers a smaller region than the first cell, one first terminal device or more positioned in the first cell receive a signal on which precoding has been performed and that is transmitted by a first base station apparatus that controls the first cell, and one second terminal device or more positioned in the second cell receive a signal on which precoding has been performed and that is transmitted using the same frequency as in the first cell by a second base station apparatus that controls the second cell. The communication system determines the number of streams to be transmitted by the second base station apparatus on the basis of information regarding the number of streams to be transmitted by the first base station apparatus. As a result, in a system in which interference between cells exists, interference may be reduced with a simple structure using transmit and receive filters. |
