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Methods and systems for providing information to a home system regarding a wireless unit roaming in a visited system
| Details |
Inventors: Adamany, Robert Andrew; Charbono, Jr., Richard L.; Didion, Edward Lawrence; Catanese, Ann M.;
Assignee: BellSouth Intellectual Property Corporation (Wilmington, DE)
Primary Examiner: Nguyen; Lee
Assistant Examiner: Trost; Will
Attorney, Agent or Firm: Tocups; Nora M.
Methods and systems to provide a home system with information about a wireless unit roaming in a visited system based on information the wireless unit provides to the visited system. A mobile switching center (MSC-V) of the visited system receives the information from the wireless unit and routes a message to an international gateway. In response, the international gateway creates a new message or alters the original message, and transmits the new or altered message to a mobile switching center (MSC-H) of the home system. In response to receipt of the new or altered message, the MSC-H validates the wireless unit (if valid), creates a response to the new or altered message, and routes the response to the international gateway. The response may include an authorization period for the wireless unit and/or OCOS/TCOS information. In response, the international gateway creates a new response or alters the response, and transmits the new or altered response to the MSC-V. In response to receipt of the new or altered response, the MSC-V registers the wireless unit, provides the wireless unit with communication services in the visited system, or otherwise follows instructions in the new or altered response. If the wireless unit moves to an area served by a second MSC-V, the second MSC-V checks with the international gateway about the wireless unit. If an authorization period is in effect, the international gateway may provide a validation of the wireless unit to the second MSC-V without another message to the home system of the wireless unit. |
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DETAILED DESCRIPTION The present invention includes methods, systems, and apparatus that relate to the provision of information to a home wireless communications system regarding a wireless unit that is roaming in a visited wireless communications system.
Advantageously, the receipt of this information by a home system allows the home system to properly route communications to the wireless unit roaming in the visited system, or for other purposes such as delivery of services, repair, record keeping, marketing records, etc.
The methods, systems, and apparatus of the present invention also include anti-fraud features that may be implemented to at least minimize if not eliminate instances of unauthorized or fraudulent use of wireless units.
Generally, the exemplary embodiments of the present invention contemplate uses with wireless units such as cellular telephones and personal communication service (PCS) units that operate under the standards of Advanced Mobile Phone Service (AMPS), Call Division Multiple Access (CDMA), or Time Division Multiple Access (TDMA).
Nonetheless, the principles of the present invention may be applied to other communication devices operating under other standards with the appropriate reconfiguration.
Exemplary embodiments of the present invention include an international gateway for use with respect to the referenced wireless communications.
Advantageously, the international gateway may be used in a wireless communications system so as to provide a method, system and/or apparatus to provide information regarding a wireless unit that is roaming in the service area of a visited system.
The service area of the visited system may be located in the United States or abroad.
Further, the international gateway may be used in a wireless communications system so as to provide a method, system and/or apparatus of fraud prevention with respect to the use of wireless units in wireless communications systems.
An exemplary embodiment of the present invention describes the international gateway as a stand-alone unit such as may be embodied by or in a service control point (SCP)
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Cell Phones 
