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Method and system for aiding GPS receivers via a cellular or PCS network

  • US 6,204,808 B1
  • Filed: 03/08/1999
  • Issued: 03/20/2001
  • Est. Priority Date: 08/13/1998
  • Status: Expired due to Term
First Claim
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1. The method of assisting a global positioning system (GPS) receiver to make positioning measurements, the GPS receiver being integrated in a mobile station including a transceiver operating in a wireless network, comprising the steps of:

  • transferring assistance information from the wireless network to the mobile station, the assistance information representing range of a fixed location in the wireless network in proximity to the mobile station at a select time, and derivatives of the range, relative to plural select satellites in the GPS; and

    operating the mobile station to utilize received assistance information to search composite received signals from the plural select satellites in the GPS to measure a code phase for plural ones of the select satellites in the GPS, the measured code phases representing range of the mobile station relative to the plural ones of the select satellites.

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