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Method for selecting a core network

  • US 7,305,251 B2
  • Filed: 10/07/2003
  • Issued: 12/04/2007
  • Est. Priority Date: 10/07/2003
  • Status: Active Grant
First Claim
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1. A method for selecting a core network for a communication device comprising the steps of:

  • receiving at least one public land mobile network identifier (PLMNid);

    selecting a PLMNid to form a selected public land mobile network identifier;

    setting an indicator to indicate whether a substitute public land mobile network is allowed;

    determining whether the selected public land mobile network identifier corresponds to a shared network;

    forming a registration request message containing the selected public land mobile network identifier;

    including the indicator in the registration request message, if the selected public land mobile network identifier corresponds to a shared network; and

    transmitting the registration request message.

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