Base station apparatus, mobile terminal apparatus and communication control method

摘要

The present invention provides a base station apparatus, a mobile terminal apparatus and a communication control method which can improve the accuracy of channel quality estimation. A communication control method includes the steps of: arranging a CSI-RS, which is a reference signal for downlink channel estimation, in resources of subframes for CSI-RS transmission; setting, in the subframes for CSI-RS transmission, resources to which the CSI-RS is allocated in neighboring areas, to be muting resources; and reporting transmission interval information, which indicates a transmission interval of subframes that are set at the same timing in a transmission cycle of a subframe for CSI-RS transmission in a subject area and in a transmission cycle of a subframe for CSI-RS transmission in the neighboring areas, to a mobile terminal apparatus.

主权项

1. A base station comprising:
a CSI-RS (Channel State Information-Reference Signal) allocation section configured to allocate a CSI-RS, which is a reference signal for downlink channel estimation, to resources of subframes for CSI-RS transmission; a muting resource setting section configured to set in the subframes for CSI-RS transmission, resources to which CSI-RS is allocated in a neighboring area, to be muting resources; and a reporting section configured to report transmission interval information that indicates an interval between subframes, where transmission timing of the CSI-RS matches between a first transmission cycle and a second transmission cycle, to a mobile apparatus, the first transmission cycle indicating a transmission cycle of a subframe for CSI-RS transmission in a subject area and the second transmission cycle being different from the first transmission cycle and indicating a transmission cycle of a subframe for CSI-RS transmission in the neighboring area.