07474897 is referenced by 143 patents and cites 50 patents.

Methods and systems of continuously optimizing data in WiFi positioning systems. A location-based services system for WiFi-enabled devices calculates the position of WiFi-enabled devices. A WiFi-enabled device communicates with WiFi access points within range of the WiFi-enabled device so that observed WiFi access points identify themselves. A reference database is accessed to obtain information specifying a recorded location for each observed WiFi access point. The recorded location information for each of the observed WiFi access points is used in conjunction with predefined rules to determine whether an observed WiFi access point should be included or excluded from a set of WiFi access points. The recorded location information of only the WiFi access points included in the set are used and the recorded location information of the excluded WiFi access points are excluded when calculating the geographical position of the WiFi-enabled device.

Title
Continuous data optimization by filtering and positioning systems
Application Number
11/359271
Publication Number
7474897 (B2)
Application Date
February 22, 2006
Publication Date
January 6, 2009
Inventor
Russel K Jones
Roswell
GA, US
Farshid Alizadeh Shabdiz
Wayland
MA, US
Michael G Shean
Boston
MA, US
Edward J Morgan
Needham
MA, US
Agent
Wilmer Cutler Pickering Hale & Dorr
Assignee
Skyhook Wireless
MA, US
IPC
H04Q 7/20
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