×

Method to modify calibration data used to locate a mobile unit

DC CAFC
  • US 7,561,104 B2
  • Filed: 02/05/2008
  • Issued: 07/14/2009
  • Est. Priority Date: 02/05/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining a location of a mobile station, comprising:

  • providing a database of previously-gathered calibration data for a predetermined region in a wireless network, wherein said network includes a first transmitter and a second transmitter;

    collecting observed network measurement data including a first signal characteristic from said first transmitter and a second signal characteristic from said second transmitter;

    determining which of said first and second signal characteristics has a greater magnitude;

    modifying said observed network measurement data using the greater magnitude signal characteristic; and

    comparing said modified network measurement data with said database of calibration data to thereby determine the location of the mobile station.

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