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FAST HANDOVER METHOD USING L2/L3 COMBINATION

  • US 20130163561A1
  • Filed: 02/20/2013
  • Published: 06/27/2013
  • Est. Priority Date: 05/02/2008
  • Status: Abandoned Application
First Claim
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1. A mobility supporting method of a mobile node when the mobile node performs handover from a first access network comprising a first handover control agent (HCA) to a second access network comprising a second HCA, in a system comprising handover control agents associating access networks, with a core network, and a mobility information control system (MICS) located in the core network, the mobility supporting method comprising:

  • setting-up a tunnel towards the first HCA, based on an address of the first HCA of a message received from the MICS, wherein the setting-up is performed by the second HCA;

    setting-up a tunnel towards the second HCA, based on an address of the second HCA of a deregistration message received from the MICS, wherein the setting-up is performed by the first HCA;

    transmitting a location update message comprising an address of the mobile node and the address of the second HCA to a third HCA of a third access network to which a correspondent node belongs, wherein the transmitting is performed by the first HCA or the second HCA;

    changing tunnel information regarding the mobile node from the first HCA to the second HCA, wherein the changing is performed by the third HCA; and

    releasing a tunnel between the first HCA and the second HCA after a predetermined period of time by timeout.

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