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Systems, methods and computer program products for mobility management in hybrid satellite/terrestrial wireless communications systems

  • US 8,249,585 B2
  • Filed: 03/01/2010
  • Issued: 08/21/2012
  • Est. Priority Date: 10/12/2005
  • Status: Active Grant
First Claim
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1. A method of handing over communications of a radioterminal from a terrestrial wireless communications system to a satellite wireless communications system, the method comprising:

  • communicating a handover command message from the terrestrial wireless communications system to the radioterminal; and

    responsive to receipt of the handover command message at the radioterminal, waiting a time interval before terminating a traffic channel between the radioterminal and the terrestrial wireless communications system, wherein waiting a time interval before terminating a traffic channel between the radioterminal and the terrestrial wireless communications system comprises waiting to transmit a handover acknowledgement message from the radioterminal to the terrestrial wireless communications system for a time interval sufficient to determine and communicate timing information for the satellite wireless communications system to the radioterminal from a satellite of the satellite wireless communications system.

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