BASE STATION DEVICE, TERMINAL DEVICE, COMMUNICATION SYSTEM, TRANSMISSION METHOD, RECEPTION METHOD, COMMUNICATION METHOD AND INTEGRATED CIRCUIT

摘要

In a communication system including a first base station device, at least one second base station device that has smaller transmit power than that of the first base station device, and a terminal device that is connected with the first base station device or the second base station device, a transmission unit of the second base station device maps per one resource block a smaller number of reference signals than a number of reference signals mapped per one resource block by the first base station device and transmits the mapped reference signals.