Interference control method, macro terminal, macro base station, and femtocell base station

Abstract

Provided is an interference control method that, in the case where a macro terminal does not exist close to the femtocell terminal, improves the coverage performance and bit rate of femtocell terminals, and also prevent deterioration in the performance of femtocell base stations, femtocell terminals, or macro terminals. In this method, the macro terminals () will transmit, when the difference value between the RSRQs of the femtocell base stations () and the RSRQ of a macro base station () is greater than a prescribed threshold value, a request to start an interference control, the difference value, and identification information of the femtocell base station (), to the macro base station (). The macro base station () will transmit, on the basis of the request, the difference value, and identification information, an interference-control start-up request signaling to the femtocell base station () specified by the identification information. The femtocell base station () will conduct interference control, on the basis of the interference-control start-up request signaling, to femtocell terminals () registered with the femtocell base station ().