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Solution for restricting roaming in mobile telephony systems

  • US 20030139182A1
  • Filed: 01/17/2003
  • Published: 07/24/2003
  • Est. Priority Date: 01/18/2002
  • Status: Abandoned Application
First Claim
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1. A method in a GPRS environment executing a possible roaming restriction for a subscriber when a terminal associated with that subscriber initiates a roaming procedure intended to transfer handling of the terminal from a first serving node to a second serving node, characterized in a) when the second serving node receives a unique identity code of the subscription associated with the subscriber in a message of the initiated roaming procedure, determining if it is allowed to fulfil the roaming procedure by inquiring whether the unique identity code is among identity codes or identity code series stored in the second serving node or in a data base connected thereto, as said stored identity codes or identity code series indicate which subscriptions being allowed to roam into the second serving node, b) if it is determined that the roaming procedure is not allowed to be fulfilled, interrupting the roaming procedure and informing the first serving node to keep handling the terminal and informing the terminal that the initiated roaming procedure was rejected.

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