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Apparatus and method for handover between two networks during an ongoing communication

  • US 20050227691A1
  • Filed: 03/19/2004
  • Published: 10/13/2005
  • Est. Priority Date: 03/19/2004
  • Status: Abandoned Application
First Claim
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1. A method in a communication device for handover from a first radio access network to a second radio access network, the first radio access network using a different mode of communication from the second radio access network, the method comprising:

  • entering an ongoing communication on the first radio access network;

    detecting the presence of a second radio access network, the second radio access network being uncoordinated with the first radio access network;

    sending a transfer request to the second radio access network requesting transfer of the ongoing communication from the first radio access network to the second radio access network; and

    transferring the ongoing communication from the first radio access network to the second radio access network.

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