Patent ID: 9173123
Filing Date: 2015-10-27
Classification: H04B,H04J,H04L,H04W

Abstract:
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.