RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND RADIO COMMUNICATION METHOD

摘要

The present invention is designed to provide a radio communication system which can control uplink transmission power adequately even in an HetNet environment. A radio communication system having a first radio base station apparatus and a second radio base station apparatus that is configured to able to communicate with the first radio base station apparatus is provided; and, in this radio communication system, the first radio base station apparatus has a first communication quality measurement section that measures the received quality of an uplink reference signal transmitted from a user terminal, and generates first received quality information, and a reporting section that reports the first communication quality information to the second radio base station apparatus, and the second radio base station apparatus has a second communication quality measurement section that measures the received quality of the uplink reference signal transmitted from the user terminal, and generates second communication quality information, a correction value determining section that determines a correction value for the transmission power of the user terminal on the uplink based on the first communication quality information and the second communication quality information, and a reporting section that reports the determined correction value to the user terminal.

主权项

1. A radio communication system comprising a first radio base station apparatus and a second radio base station apparatus that is configured to be able to communicate with the first radio base station apparatus, wherein:
the first radio base station apparatus comprises:
a first communication quality measurement section that measures received quality of an uplink reference signal transmitted from a user terminal, and generates first received quality information; anda reporting section that reports the first communication quality information to the second radio base station apparatus; and the second radio base station apparatus comprises:
a second communication quality measurement section that measures received quality of the uplink reference signal transmitted from the user terminal, and generates second communication quality information;a correction value determining section that determines a correction value for transmission power of the user terminal on an uplink based on the first communication quality information and the second communication quality information; anda reporting section that reports the determined correction value to the user terminal.