A base station apparatus includes a first identification information acquisition unit for acquiring first identification information for identifying a terminal, the terminal being under management of the base station apparatus, a second identification information generation unit for generating second identification information associated with the first identification information acquired by the first identification information acquisition unit, and a terminal identification information notification unit for notifying an external device of the second identification information generated by the second identification information unit as information for identifying the terminal. An external apparatus is notified of identification information generated based on highly confidential first identification information within a base station, so that personalization can be feasible between a terminal and the external apparatus.