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:
Mar. 29, 2016
Filed:
May. 08, 2014
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventor:
Stephen Joseph Beauregard, San Jose, CA (US);
Assignee:
Qualcomm Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 24/00 (2009.01); H04W 4/02 (2009.01); G01S 19/24 (2010.01); G01S 5/14 (2006.01); G01S 5/02 (2010.01); G01S 13/76 (2006.01); H04W 88/02 (2009.01);
U.S. Cl.
CPC ...
H04W 4/023 (2013.01); G01S 5/02 (2013.01); G01S 5/145 (2013.01); G01S 13/765 (2013.01); G01S 19/24 (2013.01); H04W 88/02 (2013.01);
Abstract
Methods, devices, and systems are described for determining whether a mobile device is in a stopped state based at least in part on round trip time (RTT) measurements between the device and at least one access point. The stopped state determination may be based on RTT measurements alone, or on RTT measurements in combination with other positioning and movement measurements. Further, filtering such as particle and Kalman filtering may be used to improve determination of whether the device is in a stopped state.