Aggregating location accuracy data to estimate accuracy of a...

Details Aggregating location accuracy data to estimate accuracy of a... Aggregating location accuracy data to estimate accuracy of a...

2005-10-21

2009-12-15

Kincaid, Lester (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S404200, C342S450000

Reexamination Certificate

active

07634266

ABSTRACT:
Location determination accuracy in a mobile telecommunications environment can be estimated based on location determination accuracy data for multiple empirical test calls in a geographic region. A location of a wireless station for each test call is determined using one of multiple wireless locating techniques, and an approximate ratio of wireless locating techniques for the empirical test calls is identified. Subscriber call data relating to location estimates determined using one of the wireless locating techniques is received. Location determination accuracy in the geographic region is estimated by combining the subscriber call data according to the identified ratio. To facilitate determinations of locating accuracy, the geographic region is logically segmented into multiple areas. Each area is associated with a performance profile that relates to a locating accuracy performance. Location determination accuracy is estimated based on one or more areas associated with each wireless call in the geographic region.

REFERENCES:
patent: 6865395 (2005-03-01), Riley
patent: 6947734 (2005-09-01), Toubassi
patent: 7047019 (2006-05-01), Cox et al.
Federal Communications Commission, Guidelines for Testing and Verifying the Accuracy of Wireless E911 Location Systems, Apr. 12, 2000, pp. 13 pages.
Z Biacs G. Marshall M. Moeglein, W. Riley, The Qualcomm/SnapTrack Wireless-Assisted GPS Hybrid Positioning System and Results from Initial Commercial Deployments, 7 pages.

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