Radio system and radio communication method

摘要

Regardless of use of small resource in donor (macro) base station, high throughput in relay femto base station is provided. The relay femto base station transfers data of a C-plane communicated between a core network and a mobile station through the donor macro base station by a radio link, and transfers data of a U-plane through an internet by a wired public line. The relay femto base station measures an interfered power from a neighboring relay femto base station, and notifies the donor macro base station of the measured interfered power, and the donor macro base station adjusts radio packet scheduling so as to prevent interference between the relay femto base stations on the basis of a notified measurement value of the interfered power.

主权项

1. A radio system comprising: a donor base station and a relay base station in which the donor base station or the relay base station are configured to communicate with a mobile station by a radio signal, wherein
the donor base station is connected to a core network by a first wire link, and is configured to receive, from the core network by the first wire link, first data of a C-plane, for allowing the core network to communicate with the mobile station within a communication area of the relay base station or in the vicinity of an edge of the communication area of the relay base station, and map the first data of the C-plane to a first sub-frame; the relay base station is connected to the core network by a second wire link, and is located within a communication area of the donor base station or in the vicinity of an edge of the communication area of the donor base station, and connected to the donor base station by a first radio link; the relay base station is configured to receive the first data of the C-plane transmitted by using the first radio link, and receive data of a U-plane, corresponding to the first data of the C-plane by using the second wire link from the core network; the relay base station is configured to transmit the first data of the C-plane transmitted by using the first radio link from the donor base station and first data of the U-plane transmitted by using the second wire link from the core network to the mobile station by using a second radio link, wherein the first data of the C-plane are transferred between the core network and the relay base station through the donor base station by using the first radio link, and the first data of the U-plane are transferred between the core network and the relay base station by using the second wire link; the relay base station has a function of measuring interfered power from one or a plurality of neighboring relay base stations; and the relay base station is configured to measure a signal power of a reference signal transmitted from the one or the plurality of neighboring relay base stations by using a second sub-frame other than the first sub-frame for measuring the interfered power, wherein the second sub-frames of the one or the plurality of neighboring relay base stations are predetermined so as not to overlap among the one or the plurality of neighboring relay base stations.