Disclosed is a mobile communication method including: a step in which an exchange station (MME) manages access information specifying a CSG-ID which allows access by a mobile station (UE); a step in which the exchange station (MME) acquires a combination of the CSG-ID and eNB-ID of a wireless base station (HeNB2) from a gateway device (HeNB-GW); and a step in which the exchange station (MME) determines whether or not access to the wireless base station (HeNB2) by the mobile station (UE) is possible, by referring to the access information and said combination, using the identification information of the mobile station (UE) and the eNB-ID of the wireless base station (HeNB2) contained in "HO required" received from the wireless base station (eNB).
