×

Geo-location using distributed composite GPS signals

  • US 7,602,335 B2
  • Filed: 06/29/2007
  • Issued: 10/13/2009
  • Est. Priority Date: 11/17/2006
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of handling an emergency call from a mobile station, comprising:

  • receiving an emergency call from a mobile station in a location where the mobile station does not directly detect enough global positioning system (GPS) satellites or enough macrocells to provide location information;

    receiving an indication of at least a composite GPS signal that was detected by the mobile station at the location, the composite OPS signal being based on information regarding GPS satellites, wherein the received indication is based on a number of satellites; and

    determining the location of the mobile station from the received indication bydetermining whether the received indication provides sufficient information for locating the mobile station;

    determining possible mobile station locations from information regarding each of a plurality of subcombinations of the number of satellites; and

    selecting one of the possible mobile station locations that corresponds to a known location as the location of the mobile station.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×