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Data messaging efficiency for an assisted wireless position determination system

DC
  • US 6,861,980 B1
  • Filed: 05/26/2004
  • Issued: 03/01/2005
  • Est. Priority Date: 05/26/2004
  • Status: Active Grant
First Claim
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1. A method for messaging position-based information in an assisted wireless position determination system, comprising:

  • receiving first aiding information from a position determination entity (PDE) via a wireless communication link;

    determining a redundant satellite positioning signal based on said received first aiding information;

    transmitting a request for second aiding information based on said determined redundant satellite positioning signal to said PDE via said wireless communication link;

    receiving said requested second aiding information from said PDE via said wireless communication link;

    locating a necessary satellite positioning signal from a positioning satellite based on said received second aiding information; and

    determining a geographic position based on said located satellite positioning signal.

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