The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Dec. 28, 2007
Nicolas Brachet, Chestnut Hill, MA (US);
Farshid Alizadeh-shabdiz, Wayland, MA (US);
Joel N. Nelson, Groton, MA (US);
Russel K. Jones, Medfield, MA (US);
Nicolas Brachet, Chestnut Hill, MA (US);
Farshid Alizadeh-Shabdiz, Wayland, MA (US);
Joel N. Nelson, Groton, MA (US);
Russel K. Jones, Medfield, MA (US);
Skyhook Wireless, Inc., Boston, MA (US);
Abstract
Methods and systems 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. 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.