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Method and system for tunnel optimized call setup for mobile nodes

  • US 6,816,912 B1
  • Filed: 12/01/2000
  • Issued: 11/09/2004
  • Est. Priority Date: 12/01/2000
  • Status: Expired due to Fees
First Claim
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1. A method of establishing a communications path, comprising:

  • sending a request from a mobile network device to a foreign service application on a foreign network, wherein the mobile network device has roamed from a home network to the foreign network;

    receiving a response from the foreign service application for the request on a tunnel server;

    tunneling the response via a unidirectional virtual tunnel to a foreign agent, wherein the unidirectional virtual tunnel overrides a default communications path from the foreign service application on the foreign network to a home agent on the home network and to the mobile network device on the foreign network and creates a new communications path from the foreign service application to the tunnel server, to the foreign agent and to the mobile network device on the foreign network;

    receiving the tunneled response on the foreign agent on the foreign network via the unidirectional virtual tunnel from the tunnel server;

    sending an un-tunneled response from the foreign agent to the mobile network device, thereby reducing round-trip time delay between the foreign service application and the mobile network device; and

    receiving the un-tunneled response on the mobile network device.

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