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:
Oct. 22, 2013
Filed:
Nov. 24, 2010
Zongxiang Yang, Superior, CO (US);
Henry Frick, Boulder, CO (US);
John Charles Curlander, Boulder, CO (US);
William B. Gail, Boulder, CO (US);
Sharad Agarwal, Seattle, WA (US);
Janani C. Sriram, Bellevue, WA (US);
Zongxiang Yang, Superior, CO (US);
Henry Frick, Boulder, CO (US);
John Charles Curlander, Boulder, CO (US);
William B. Gail, Boulder, CO (US);
Sharad Agarwal, Seattle, WA (US);
Janani C. Sriram, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A path progression matching system and method that uses path progression to find a current position of a mobile device in an indoor environment and a path history to find the path of the mobile device to get to the current position. Embodiments of the system and method use path history information, constraints, and optimization measures such as the use of received signal strength indicator (RSSI) weighted correlation coefficients. Embodiments of the system and method include a unified probabilistic model that uses path history and allows multiple constraints to be applied simultaneously. Embodiments of the system and method also include a path progression module having a first-stage progression module, which finds a starting location for the path progression matching, a second-stage module, which begins building a path history, and a third-stage progression module, which uses the path history to find the current position and path.