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Destination Learning and Mobility detection in Transit Network Device in LTE & UMTS Radio Access Networks

  • US 20120076120A1
  • Filed: 09/23/2011
  • Published: 03/29/2012
  • Est. Priority Date: 09/24/2010
  • Status: Active Grant
First Claim
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1. A method of associating two unidirectional GTP tunnels corresponding to a mobile device, using a transit network device placed in a wireless mobile network to intercept control plane and user plane traffic, said method comprising:

  • using said transit network device to monitor upstream traffic to a mobile core network and downstream traffic from said mobile core network;

    identifying upstream messages in said upstream traffic which are from said mobile device;

    identifying downstream messages in said downstream traffic which are destined for said mobile device;

    associating a transport layer address (TLA) and tunnel endpoint identifier (GTP-TEID) in said identified upstream message with a TLA and GTP-TEID in said identified downstream message, thereby associating two unidirectional GTP tunnels.

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