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SIP client-based local number portability through an aircraft air-to-ground link

  • US 8,073,443 B2
  • Filed: 04/14/2009
  • Issued: 12/06/2011
  • Est. Priority Date: 08/24/1999
  • Status: Expired due to Fees
First Claim
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1. A wireless device number portability system which enables passengers'"'"' wireless devices operational onboard an aircraft to receive communications which are directed to their home communication address, comprising:

  • number portability system, located on an aircraft and responsive to activation of a passenger'"'"'s wireless device onboard the aircraft, for establishing a communication session with said passenger wireless device;

    Airborne Session Initiated Protocol Client, resident on the passenger wireless device and responsive to said communication session with said number portability system, for automatically identifying the passenger wireless device to the number portability, system;

    wherein said number portability system comprises;

    call forwarding activation process for automatically initiating communications with a home communication system which hosts the passenger'"'"'s home communication address to activate call forwarding to said Airborne Session Initiated Protocol Client from the passenger'"'"'s home communication address;

    ground-based Aircraft PSTN gateway, connected to a ground-based communication network, for extending communications received from the passenger'"'"'s home communication system to said Airborne Session Initiated Protocol Client resident on said passenger wireless device; and

    Aircraft gateway, connected to a wireless network which serves said aircraft, for communicatively interconnecting said wireless network with said ground-based Aircraft PSTN gateway to extend said communications, forwarded to said ground-based Aircraft PSTN gateway by the passenger'"'"'s home communication system, to said Airborne Session Initiated Protocol Client resident on said passenger wireless device via said wireless network.

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