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:
Nov. 15, 2022
Filed:
May. 10, 2020
Chenshu Wu, Hong Kong, CN;
Feng Zhang, Greenbelt, MD (US);
Beibei Wang, Clarksville, MD (US);
K. J. Ray Liu, Potomac, MD (US);
Oscar Chi-lim AU, San Jose, CA (US);
Chenshu Wu, Hong Kong, CN;
Feng Zhang, Greenbelt, MD (US);
Beibei Wang, Clarksville, MD (US);
K. J. Ray Liu, Potomac, MD (US);
Oscar Chi-Lim Au, San Jose, CA (US);
ORIGIN WIRELESS, INC., Greenbelt, MD (US);
Abstract
Methods, apparatus and systems for wireless tracking with graph-based particle filtering are described. A described wireless monitoring system comprises a transmitter transmitting a series of probe signals, a receiver, and a processor. The receiver is configured for: receiving the series of probe signals modulated by the wireless multipath channel and an object moving in a venue, and obtaining a time series of channel information (TSCI) of the wireless multipath channel from the series of probe signals. The processor is configured for: monitoring a motion of the object relative to a map based on the TSCI, determining an incremental distance travelled by the object in an incremental time period based on the TSCI, and computing a next location of the object at a next time in the map based on at least one of: a current location of the object at a current time, the incremental distance, and a direction of the motion during the incremental time period.