Patent ID: 8570991

Claim:
An indoor base station apparatus comprising: a peripheral cell information obtaining unit configured to obtain peripheral cell information; a location information obtaining part configured to obtain location information from a base station located in a periphery of the indoor base station in a case where the indoor base station apparatus is located in a femtocell that cannot receive signals from a communications network or an outdoor cell, the location information indicative of a location in which the indoor base station apparatus is located; and a location registration requesting part configured to transmit a location registration request to an upper level apparatus; wherein when the location information obtaining part obtains the location information, the location registration requesting part transmits the location registration request including the obtained location information; wherein the location information obtaining part is configured to determine the location of the indoor base station apparatus based on a first time data included in the location information of the indoor base station apparatus and a second time data included in the peripheral cell information.