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

摘要

To increase the number of CSI-RSs for interference measurement to improve interference measurement accuracy, a first reference signal for channel state measurement and a second reference signal for interference measurement are assigned to reference signal resources defined for transmission of the first reference signal, and a mobile terminal apparatus that supports both the first reference signal and the second reference signal is notified of pattern information to identify an assignment pattern of the first reference signal and the second reference signal. A second mobile terminal apparatus that supports the first reference signal and that does not support the second reference signal is notified of pattern information to identify an assignment pattern of the first reference signal, and of assignment information indicating that resources assigned the second reference signal are assigned a third reference signal of zero power for channel state measurement.

主权项

1. A radio communication system comprising:
a plurality of base station apparatuses that transmits a first reference signal for channel state measurement; and first and second mobile terminal apparatuses that connect to one of the plurality of base station apparatuses, wherein each of the base station apparatuses is provided with a reference signal assignment section that assigns the first reference signal to a reference signal resource defined for transmission of the first reference signal, while assigning a second reference signal for interference measurement to the resource, and a notification section that notifies a first mobile terminal apparatus that supports both the first reference signal and the second reference signal of pattern information to identity an assignment pattern of the first reference signal and the second reference signal, and
the first mobile terminal apparatus is provided with a reception section that receives notified pattern information, and an interference measurement section that performs interference measurement using both the first reference signal and the second reference signal or only the second reference signal, based on the notified pattern information.