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HANDOVER BETWEEN AN IEEE 802.16 WiBro NETWORK AND A UMTS NETWORK USING MEDIA INDEPENDENT HANDOVER FUNCTION

  • US 20080198804A1
  • Filed: 09/27/2007
  • Published: 08/21/2008
  • Est. Priority Date: 02/16/2007
  • Status: Active Grant
First Claim
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1. A method implemented in a wireless transmit/receive unit (WTRU) for performing handover between an IEEE 802.16 network and a universal mobile telecommunication system (UMTS) network using IEEE 802.21 media independent handover (MIH) functions, the method comprising:

  • an MIH entity requesting an IEEE 802.16 modem to establish an IEEE 802.16 link via a first application programming interface (API);

    the IEEE 802.16 modem reporting a status of an attempt to establish an IEEE 802.16 link to the MIH entity via a second API;

    if the status indicates that an IEEE 802.16 link has been successfully established, the MIH entity starting an MIH session;

    the IEEE 802.16 modem indicating that a layer 2 connection is expected be terminated in a certain time interval via a third API to the MIH entity; and

    the MIH entity activating a UMTS modem for handover.

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