×

Satellite based positioning method and system for coarse location positioning

  • US 8,116,976 B2
  • Filed: 08/07/2007
  • Issued: 02/14/2012
  • Est. Priority Date: 05/18/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. A satellite based positioning method including a mobile station and a network, the method comprising:

  • acquiring, by the mobile station, a plurality of satellites using stored satellite sub-almanacs;

    calculating, by the mobile station, a coarse position of the mobile station using the sub-almanacs;

    transmitting from the mobile station to a network the coarse position and a list of satellites and their respective sub-almanacs used to calculate the coarse position; and

    calculating and transmitting from the network to the mobile station, a corrected coarse position based on a difference between the sub-almanacs of the listed satellites and corresponding ephemeris data of the listed satellites.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×