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:
Jun. 22, 2021
Filed:
Apr. 08, 2019
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/02 (2006.01); G01S 13/76 (2006.01); H04W 24/02 (2009.01); H04W 24/08 (2009.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
G01S 13/765 (2013.01); H04L 25/0256 (2013.01); H04L 25/0258 (2013.01); H04W 24/02 (2013.01); H04W 24/08 (2013.01); H04W 84/12 (2013.01);
Abstract
This disclosure relates to techniques for performing ranging wireless communication in a secure manner. A first wireless device may receive a plurality of independent sequences from a second wireless device. The first wireless device may perform a combined channel estimate using the sequences. The first wireless device may estimate the distance (or angle/direction, among various possibilities) between the two devices based on the combined channel estimate.