• US 20120044862A1
  • Filed: 08/20/2010
  • Published: 02/23/2012
  • Est. Priority Date: 08/20/2010
  • Status: Active Grant
First Claim
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1. A system for maintaining a communication session comprising:

  • a home gateway connected to the Internet;

    a foreign gateway connected to the Internet, wherein the foreign gateway comprises a foreign Wi-Fi access point (AP), and wherein the home gateway communicates with a hybrid device via a first tunnel operating over the Internet between the home gateway and the foreign gateway;

    a cellular data network, wherein the Internet is accessible to the cellular data network; and

    the hybrid device comprising;

    a Wi-Fi transceiver;

    a cellular transceiver, wherein the hybrid device is connected to the cellular data network via the cellular transceiver;

    a processor, wherein the processor is configured with software executable instructions to cause the hybrid device to perform operations comprising;

    detecting a transition condition in a Wi-Fi link between the Wi-Fi transceiver and the foreign Wi-Fi AP;

    establishing a second tunnel from the hybrid device to the home gateway over the Internet via the cellular data network;

    transitioning a communication session between the hybrid device and the home gateway from the first tunnel to the second tunnel; and

    sending packets to the home gateway over the cellular transceiver via the second tunnel.

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