08983493 is referenced by 31 patents and cites 313 patents.

A method of providing a relevant subset of information to a client device is based in part on scanning for Wi-Fi access points within range of the client device, using a Wi-Fi database that covers a large target region to retrieve information about these access points, using this information to estimate the position of the mobile client device, selecting a limited region in the vicinity of the estimated location of the client device, and providing information about Wi-Fi access points within this limited region to the client. For efficient transfer and maintenance of data, the target region may be divided into a hierarchy of fixed geographical tiles.

Title
Method and system for selecting and providing a relevant subset of Wi-Fi location information to a mobile client device so the client device may estimate its position with efficient utilization of resources
Application Number
13/758154
Publication Number
8983493 (B2)
Application Date
February 4, 2013
Publication Date
March 17, 2015
Inventor
Russel K Jones
Medfield
MA, US
Joel N Nelson
Groton
MA, US
Farshid Alizadeh Shabdiz
Wayland
MA, US
Nicolas Brachet
Chestnut Hill
MA, US
Agent
Cesari and McKenna
Assignee
Skyhook Wireless
MA, US
IPC
H04W 84/12
H04W 64/00
H04W 48/14
H04W 48/08
H04W 16/18
H04W 48/20
G01S 5/02
H04W 4/02
H04W 24/00
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