Patent ID: 8774796

Claim:
An international roaming-capable mobile station, comprising: a service requesting device which transmits a request for a service to a server- and wherein, when the service is permitted, the international roaming-capable mobile station is provided with the service by the server in response to the request transmitted by the service requesting device; a service area determining device that determines a service area in which the international roaming-capable mobile station is located; a service area notifying device that causes the form in which the service requested in the request transmitted by the international roaming-capable mobile station is provided to be controlled in accordance with the service area determined by the service area determining device, by notifying the server of the service area using a process of adding data regarding the service area to the request for the service that is transmitted to the server, wherein the service area notifying device is adapted to transmit the request to the server after adding a header describing the service area in which the international roaming-capable mobile station is located to a header area of the request, and wherein the service area in which the international roaming-capable mobile station is located is independent of a location of the server to which the request is being transmitted, wherein the service is received by the international-roaming capable mobile station in a controlled form that is controlled in accordance with the service area as notified to the server in the header area of the request, and wherein the controlled form of the service includes prohibiting the service when a determination is made that the service is prohibited for the service area based on the geographic region of the service area; the server, which receives the request transmitted by the international roaming-capable mobile station, and controls the controlled form in which the service requested in the received request is provided in accordance with the data regarding the service area in which said international roaming-capable mobile station is located that is provided in the header of the received request; and a carrier setting device that sets a single carrier from among a plurality of carriers in relation to an international roaming-capable mobile communication network system, wherein the service area determining device determines the service area in which the international roaming-capable mobile station is located in accordance with the carrier set by the carrier setting device.