Maintaining an IP connection in a mobile network

  • US 20070019610A1
  • Filed: 06/21/2006
  • Published: 01/25/2007
  • Est. Priority Date: 06/21/2005
  • Status: Active Grant
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First Claim
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1. A method for IP [=Internet Protocol] communication between a mobile terminal and its correspondent node in a mobile radio network, the method comprising:

  • establishing an IP connection between the mobile terminal and its correspondent node;

    in response to detecting a period of inactivity in the IP connection, sending keep-alive messages via the IP connection at predetermined intervals;

    varying the predetermined intervals and monitoring the lengths of several periods of inactivity at which the mobile radio network disconnects the IP connection;

    based on the several monitored lengths of periods of inactivity, determining a maximum interval between keep-alive messages such that the maximum interval meets a predetermined criterion of statistical confidence; and

    setting the interval between keep-alive messages to the maximum interval.

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  • 6 Assignments
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