METHODS AND SYSTEMS FOR IMPROVING THE ACCURACY OF EXPECTED ERROR ESTIMATION IN LOCATION DETERMINATIONS USING A HYBRID CELLULAR AND WLAN POSITIONING SYSTEM
The present disclosure relates to systems and methods for improving the accuracy of expected error estimations in hybrid cellular and WLAN location determination. In some embodiments, the method can include providing a WLAN based location estimate and an expected error estimate for the WLAN based location estimate, providing a cellular based location estimate and an expected error estimate for the cellular based location estimate, and determining the expected error of the location determination by evaluating the consistency of the cellular based location estimate to the WLAN based location estimate. In some embodiments, the location estimate with the lower expected error can be selected as the location determination of the WLAN and cellular enabled device. In some embodiments, the consistency of the estimates can include the distance between the cellular based location estimate and the WLAN based location estimate.
1 . A method of determining an expected error in a location determination of a WLAN and cellular enabled device, the method comprising:
providing a WLAN based location estimate and an expected error estimate for the WLAN based location estimate;
providing cellular positioning measurements from at least one cell tower; and
determining the expected error of the location determination by evaluating the consistency of the cellular positioning system measurements to the WLAN based location estimate.
2 . The method of claim 1 , wherein consistent measurements between the WLAN based location estimate and the cellular positioning measurements from at least one cell tower result in a lower expected error in the location determination.
3 . The method of claim 1 , wherein inconsistent measurements between the WLAN based location estimate and the cellular positioning measurements from at least one cell tower result in a higher expected error in the location determination.
4 . The method of claim 1 , wherein the consistency comprises the distance between the WLAN positioning system location estimation and the satellite positioning measurements from at least one cell tower.
5 . A method of determining an expected error in a location determination of a WLAN and cellular enabled device, the method comprising:
providing a WLAN based location estimate and an expected error estimate for the WLAN based location estimate;
providing a cellular based location estimate and an expected error estimate for the cellular based location estimate; and
determining the expected error of the location determination by evaluating the consistency of the cellular based location estimate to the WLAN based location estimate.
6 . The method of claim 5 , wherein the location estimate with the lower expected error is selected as the location determination of the WLAN and cellular enabled device.
7 . The method of claim 5 , wherein determining the expected error of the location determination comprises comparing the WLAN based location estimate and the cellular based location estimate.
8 . The method of claim 5 , wherein consistent measurements between the WLAN based location estimate and the cellular based location estimate result in a lower expected error in the location determination.
9 . The method of claim 5 , wherein inconsistent measurements between the WLAN based location estimate and the cellular based location estimate result in a higher expected error in the location determination.
10 . The method of claim 5 , wherein the consistency of the estimates comprises the distance between the cellular based location estimate and the WLAN based location estimate.
11 . A system for determining an expected error in a location determination of a WLAN and cellular enabled device, the system comprising:
a positioning module comprising:
a WLAN module for receiving information from one or more WLAN access points to provide a WLAN based location estimate and an expected error for the WLAN based location estimate; and
a cellular positioning module for obtaining cellular positioning system measurements from at least one cell tower;
logic located in the positioning module for determining the expected error of the location determination by evaluating the consistency of the cellular positioning system measurements to the WLAN based location estimate.
12 . The method of system 11 , wherein consistent measurements between the WLAN based location estimate and the cellular positioning measurements from at least one cell tower result in a lower expected error in the location determination.
13 . The method of system 11 , wherein inconsistent measurements between the WLAN based location estimate and the cellular positioning measurements from at least one cell tower result in a higher expected error in the location determination.
14 . The method of system 11 , wherein the consistency comprises the distance between the WLAN positioning system location estimation and the satellite positioning measurements from at least one cell tower.
15 . A system for determining an expected error in a location determination of a WLAN and cellular enabled device, the system comprising:
a positioning module comprising:
a WLAN module for receiving information from one or more WLAN access points to provide a WLAN based location estimate and an expected error for the WLAN based location estimate; and
a cellular positioning module for receiving information from at least one cell tower to provide a cellular based location estimate and an expected error estimate for the cellular based location estimate;
logic located in the positioning module for determining the expected error of the location determination by evaluating the consistency of the cellular based location estimate to the WLAN based location estimate.
16 . The system of claim 15 , wherein the location estimate with the lower expected error is selected as the location determination of the WLAN and cellular enabled device.
17 . The system of claim 15 , wherein determining the expected error of the location determination comprises comparing the WLAN based location estimate and the cellular based location estimate.
18 . The system of claim 15 , wherein consistent estimates between the WLAN based location estimate and the cellular based location estimate result in a lower expected error in the location determination.
19 . The system of claim 15 , wherein inconsistent estimates between the WLAN based location estimate and the cellular based location estimate result in a higher expected error in the location determination.
20 . The system of claim 15 , wherein the consistency of the estimates comprises the distance between the cellular based location estimate and the WLAN based location estimate.