System and method for refining a WLAN-PS estimated location using satellite measurements in a hybrid positioning system
First Claim
1. A method of determining the location of a WLAN and satellite enabled device by using satellite measurements and satellite information from two or more satellites to refine an initial WLAN based location determination, the method comprising:
- estimating a location of the WLAN and satellite enabled device using a WLAN positioning system;
gathering satellite measurements and satellite information from at least two satellites, the satellite measurements and satellite information including information that is preliminary to a resolved satellite-based location estimate; and
refining the WLAN-based location estimate based on the satellite measurements and satellite information, wherein the refining includes choosing a location solution that best satisfies the satellite measurements and satellite information.
1 Assignment
0 Petitions
Accused Products
Abstract
This disclosure describes a system and method for refining a WLAN-PS estimated location using satellite measurements. In some embodiments, the disclosure relates to a method of determining the location of a WLAN and satellite enabled device by using two or more satellite measurements to refine an initial WLAN based location determination. The method can include estimating a position of the WLAN and satellite enabled device using a WLAN positioning system, gathering satellite location measurements from at least two satellites, determining an uncertainty area around the WLAN location estimate based on the expected error of the WLAN location estimate, wherein the uncertainty area has a plurality of possible location solutions, and determining the device location estimate inside the WLAN location uncertainty that best satisfies the satellite measurements.
-
Citations
20 Claims
-
1. A method of determining the location of a WLAN and satellite enabled device by using satellite measurements and satellite information from two or more satellites to refine an initial WLAN based location determination, the method comprising:
-
estimating a location of the WLAN and satellite enabled device using a WLAN positioning system; gathering satellite measurements and satellite information from at least two satellites, the satellite measurements and satellite information including information that is preliminary to a resolved satellite-based location estimate; and refining the WLAN-based location estimate based on the satellite measurements and satellite information, wherein the refining includes choosing a location solution that best satisfies the satellite measurements and satellite information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system for increasing the accuracy of a WLAN based position estimate using satellite positioning information, the system comprising:
-
a hybrid positioning module comprising; a WLAN positioning module for receiving information from one or more WLAN access points, and for receiving a WLAN-based location estimate based on the WLAN access point information; and a satellite positioning module for obtaining satellite measurements and satellite information from at least two different satellites, the satellite measurements and satellite information including information that is preliminary to a resolved satellite-based location estimate; and logic in the hybrid positioning module for refining the WLAN-based location estimate based on the satellite measurements and satellite information, wherein the refining includes choosing a location solution that best satisfies the satellite measurements and satellite information. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification