Method and system for reducing fraud in a cellular telecommunications system

摘要

There is disclosed a method and a system for reducing fraud in a cellular telecommunications system (10) where subscribers have access to the system in a home switch area (12) and are barred from accessing the system in a roaming area (40). The subscriber through an authentication process is able to identify potential roaming sites where the subscriber intends to be temporarily located. The subscriber first identifies temporary roaming sites (14 and 16) and then roams into these areas. When the subscriber leaves this temporary roaming site, his roaming privileges in this site are terminated. This reduces fraudulent use of the subscriber MIN-ESN numbers when the subscriber is no longer in that roaming cell site of fraudulent use of his identification numbers from other roaming sites in the cellular system.