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:
Aug. 06, 2019
Filed:
Nov. 28, 2018
Origin Wireless, Inc., Greenbelt, MD (US);
Qinyi Xu, College Park, MD (US);
Feng Zhang, Greenbelt, MD (US);
Chen Chen, Burlingame, CA (US);
Beibei Wang, Clarksville, MD (US);
Chenshu Wu, Greenbelt, MD (US);
Hangfang Zhang, Greenbelt, MD (US);
Chau-Wai Wong, Raleigh, NC (US);
David N. Claffey, Somerville, MA (US);
Chun-I Chen, Brookeville, MD (US);
Hung-Quoc Duc Lai, Parkville, MD (US);
Zhung-Han Wu, College Park, MD (US);
Min Wu, Clarksville, MD (US);
Yi Han, Ellicott City, MD (US);
Oscar Chi-Lim Au, San Jose, CA (US);
K. J. Ray Liu, Potomac, MD (US);
ORIGIN WIRELESS, INC., Greenbelt, MD (US);
Abstract
Apparatus, systems and methods for recognizing and classifying events in a venue based on a wireless signal are disclosed. In one example, a disclosed system comprises a first transmitter, a second transmitter, at least one first receiver, at least one second receiver, and an event recognition engine, in the venue. The first transmitter transmits a training wireless signal through a wireless multipath channel impacted by a known event in the venue in a training time period associated with the known event. Each first receiver receives asynchronously the training wireless signal, and obtains, asynchronously based on the training wireless signal, at least one time series of training channel information of the wireless multipath channel between the first receiver and the first transmitter. The second transmitter transmits a current wireless signal through the wireless multipath channel impacted by a current event in a current time period associated with the current event. Each second receiver receives asynchronously the current wireless signal, and obtains, asynchronously based on the current wireless signal, at least one time series of current channel information of the wireless multipath channel between the second receiver and the second transmitter. The event recognition engine trains a classifier based on the training channel information; and apples the classifier to: classify the current channel information and associate the current event with at least one of: a known event, an unknown event and another event.