RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS, AND INTERFERENCE MEASUREMENT METHOD

摘要

The present invention is designed to increase the number of CSI-RSs for interference measurements and improve the accuracy of interference measurements. The first reference signal is allocated to a reference signal resource defined for transmission of the first reference signal, and also a second reference signal for interference measurement is allocated, the allocation patterns of the first reference signal and the second reference signal are implicitly reported to the first mobile terminal to apparatus that supports both the first reference signal and the second reference signal, and, in the first mobile terminal apparatus, interference is measured using both the first reference signal and the second reference signal or using the second reference signal alone, based on the implicitly-reported allocation patterns.

主权项

1. A radio communication system comprising a plurality of base station apparatuses that transmit a first reference signal for channel state measurement, and a first mobile terminal apparatus and a second mobile terminals that each connect with one of the plurality of base station apparatuses, wherein:
each base station apparatus comprises a reference signal allocation section that allocates the first reference signal to a reference signal resource defined for transmission of the first reference signal and also allocates a second reference signal for interference measurement, and implicitly reports allocation patterns of the first reference signal and the second reference signal to the first mobile terminal apparatus that supports both the first reference signal and the second reference signal; and the mobile terminal apparatus comprises an interference measurement section that measures interference using both the first reference signal and the second reference signal or using the second reference signal alone, based on the allocation patterns reported implicitly from the base station apparatus.