A semiconductor device is disclosed. Over a sufficient period of time, a compilation of stored location data associated with the mobile station hand-off requests will represent a complete picture of the ingoing and outgoing hand-off borders for every cell in the network. To locate a desired resource, the unique name of the resource is determined. The described embodiment supports diagrams of diagrams, also called hierarchical diagrams. In a mobile communication system provided with such a mobile-service switch, home memory node, and gateway switch, the service quality is improved at a low cost while high reliability attained by the load distribution is not lowered and flexible adaptation is made to a variety of forms of functional distribution of the mobile-service switch, the home memory node, and the gateway switch. The note may have a known identifiable color and size.