| 摘要 |
A base station device, a mobile terminal device, and a communication control method, which are capable of improving the accuracy of channel quality estimation, are provided. The communication control method is characterized by having: a step in which channel state information reference signals (CSI-RS), which are reference signals for estimating downlink channels, are provided in CSI-RS resources stipulated for CSI-RS transmission; a step in which muting resources are set for CSI-RS resources; and a step in which parameters including at least transmission subframe cycles, subframe offsets, and transmission power, which identify CSI-RSs, are sent to mobile terminal devices.
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