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Seamless handoff for a wireless lan/wired lan internetworking

  • US 5,875,185 A
  • Filed: 10/10/1995
  • Issued: 02/23/1999
  • Est. Priority Date: 10/10/1995
  • Status: Expired due to Term
First Claim
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1. A handoff method for a wireless local area network servicing at least two mobile terminals, when a first mobile terminal moves from a first coverage area covered by a first base station connected to a switch to a second coverage area covered by a second base station connected to the same switch, the method comprising the steps of:

  • a. the first mobile terminal issuing to the first base station a location message containing the location of the second base station;

    b. the first mobile terminal issuing to the second base station a connection message containing virtual channel connections for the first mobile terminal;

    c. the first base station issuing a routing message containing the location of the first and second base stations and the virtual channel connections for the first mobile terminal;

    d. the switch altering the virtual channel connections for the first mobile terminal to reflect the move to the second coverage area; and

    e. the switch issuing to the second base station a complete message containing the altered virtual channel connections for the first mobile terminal.

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