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.

Date of Patent:
Apr. 09, 2019

Filed:

Sep. 12, 2017
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

Huy Phuong Tran, Portland, OR (US);

Santosh G. Pandey, Fremont, CA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 5/06 (2006.01); G01C 21/20 (2006.01); H04W 4/04 (2009.01); H04W 4/02 (2018.01); G01S 5/02 (2010.01); H04W 64/00 (2009.01);
U.S. Cl.
CPC ...
G01S 5/06 (2013.01); G01C 21/206 (2013.01); H04W 4/023 (2013.01); H04W 4/043 (2013.01); G01S 5/0252 (2013.01); H04W 64/003 (2013.01);
Abstract

A method including obtaining location estimates of a wireless mobile device inside a structure based on wireless signals transmitted by the wireless mobile device and received at a plurality of wireless access points, wherein the inside of the structure is represented by a plurality of path segments; modeling a transition from a first estimated location of the wireless mobile device to a second estimated location of the wireless mobile device by minimizing a ratio of an angle to a length between the first estimated location and the second estimated location; selecting, based on the modeling a particular path segment of the plurality of path segments; and aligning the second estimated location of the mobile device to the particular path segment. An apparatus and a computer-readable storage media implementing the method are also disclosed.


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