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Method and apparatus for signal processing in a satellite positioning system using navigation message common information

  • US 8,078,118 B2
  • Filed: 01/19/2010
  • Issued: 12/13/2011
  • Est. Priority Date: 05/06/1998
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • at a mobile device, receiving a signal from a first satellite, the signal from the first satellite comprising a pseudorandom noise (PN) code portion and a navigation message portion both associated with the first satellite;

    processing a first segment of the navigation message portion and a second segment of the navigation message portion, wherein the first segment and the second segment include common information, wherein processing the first segment of the navigation message portion and the second segment of the navigation message portion comprises checking consistency of common information in the first segment of the navigation message portion and the second segment of the navigation message portion and generating consistent common information therefrom;

    subsequently accessing the consistent common information to determine position information of the mobile device.

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