Reregistration of network units

Details Reregistration of network units Reregistration of network units

1999-01-19

2001-09-04

Chang, Vivian (Department: 2682)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S411000

Reexamination Certificate

active

06285882

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to telecommunications networks, and in particular to the reregistration of network units for fraud prevention in a global telecommunications network.
BACKGROUND OF THE INVENTION
With the development of a global economy, business persons who regularly travel to other countries are a fast growing breed. To meet their needs, satellite-based global telecommunications networks are being developed. The first such network was commercially activated by Iridium LLC on Nov. 1, 1998. These networks provide international cellular/satellite phone and paging services. Such networks inevitably involve numerous entities in many different countries which work together as part of the network. Such entities involve governments, service providers, industry clearinghouses, and others from around the world. Each call made through the network often involve numerous entities and often cross national sovereignty lines.
As calls cross sovereignty lines, they often also pass from a jurisdiction using one communications protocol into another jurisdiction using a different communications protocol. This presents a problem when a subscriber is to be barred or deregistered from further access to the network due to unpaid bills, lost phones, etc. A message is sent through the network to deregister the subscriber. However, this message may be lost due to congestion or message routing problems. If this happens, then the subscriber is never deregistered and the subscriber can continue to use the network.
Accordingly, there exists a need for a method of ensuring proper deregistration of a network subscriber for cross-protocol calls in a global telecommunications network. The present invention addresses such a need.
SUMMARY OF THE INVENTION
The present invention provides a method and system for reregistration of a subscriber unit in a global telecommunications network. The method and system includes receiving an event requiring authentication; determining if a threshold for subscriber verification has been reached; requesting subscriber verification if the threshold has been reached; and deregistering the subscriber if the subscriber is not verified. The method and system of the present invention prevents continued access to the network by deregistered subscribers for cross-protocol calls when deregistration messages are lost. In this manner, fraudulent use of the network by unauthorized users is decreased.


REFERENCES:
patent: 5519706 (1996-05-01), Bantz
patent: 6078811 (2000-06-01), Lin
patent: 6137791 (2000-10-01), Frid

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