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. 12, 2019
Filed:
Nov. 20, 2014
Tracewave Gmbh, Berlin, DE;
Cornelis Adrianus Henricus Maria Van Puijenbroek, Leusden, NL;
TRACEWAVE GMBH, Berlin, DE;
Abstract
Method for localizing a wireless node in a wireless sensor network, and wireless node using the method. The method includes sending a chirp spread spectrum signal with a carrier frequency from a first wireless node (A) to a second wireless node (B), the second wireless node (B) including a plurality of antennas; receiving the chirp spread spectrum signal at the plurality of antennas; executing time-of-arrival ranging between the first and second wireless nodes (A, B) for determining a distance between the first and second wireless nodes (A, B); and detecting a relative phase shift of the received chirp spread spectrum signal at each of the plurality of antennas of the second wireless node (B) and determining a direction of the first wireless sensor node (A) with respect to the second wireless sensor node (B) from the detected relative phase shift.