In a mobile communication system including a certain user targeted base station (Home eNB), fast cell search and handover are achieved without unnecessary signaling and without increasing interference with other cells. In the mobile communication system, when it is detected that a mobile station permitted to access the certain user targeted base station has entered or exists within a location registration area associated with the certain user targeted base station, connection information including at least frequency information being presently used by the certain user targeted base station and ID information for the certain user targeted base station is transmitted to the mobile station in a dedicated manner. The mobile station performs cell search based on the transmitted connection information. In a preferred embodiment, the mobile station receives adjacent cell frequency information broadcast from a resident public targeted base station and performs the cell search based on the frequency information in the transmitted connection information as well as the adjacent cell frequency information.