Patent ID: 8285293

Claim:
A method of radio communication in a radio communications network comprising a macrocell base station and a femtocell base station, the method comprising: the femtocell base station transmitting in a first radio frequency band that is allocated to the macrocell; the femtocell base station detecting that a user terminal that is connected to the macrocell base station is in the femtocell; and the femtocell base station in response to said detecting that the user terminal is in the femtocell, ceasing to use frequency band at least in the region in which the user terminal is located so as to avoid unacceptable interference to the user terminal; and wherein the first radio frequency band use by the femtocell base station is stopped for a predetermined time interval upon the user being identified as being in the femtocell; and wherein the first radio frequency band use by the femtocell base station is restarted after said time interval, and upon the user terminal being identified as still in the femtocell use of the first frequency band is ceased again and the time interval to be used subsequently is extended.