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Method for call establishment and rerouting in mobile computing networks

  • US 5,590,126 A
  • Filed: 09/27/1995
  • Issued: 12/31/1996
  • Est. Priority Date: 09/27/1995
  • Status: Expired due to Term
First Claim
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1. A method of call establishment in a communications network, wherein mobile user devices are wirelessly coupled to said network via base station units corresponding to a predetermined cell boundary in said network, said network including a virtual circuit (VC) routing mechanism adapted to establish virtual circuit connections for transmission of data in said network, said method comprising the steps of:

  • establishing a VC connection path between a mobile device and another endpoint in said network, wherein said step of establishing said VC connection path includes the steps of;

    sending a connection setup request from said mobile device to an associated base station to thereby initiate a communication to said endpoint; and

    performing a handshake sequence between said mobile device and said associated base station, wherein said connection setup request is transmitted further in said network after completion of said handshake sequence, and wherein the VC establishment process is aborted if said mobile device moves out of the cell boundary of said associated base station prior to completion of said handshake sequence; and

    extending said VC path subsequent to said mobile device moving from a first cell boundary associated with a first base station to within a second cell boundary associated with a second base station, said first and second base station being coupled to a common local switching fabric.

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