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.

Date of Patent:
Sep. 03, 2024

Filed:

Feb. 01, 2022
Applicant:

Zainar, Inc., Redwood City, CA (US);

Inventors:

Philip A. Kratz, Redwood City, CA (US);

Mainak Chowdhury, Redwood City, CA (US);

Alexander Hooshmand, Redwood City, CA (US);

Daniel M. Jacker, Redwood City, CA (US);

Assignee:

ZaiNar, Inc., Redwood City, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H04L 7/04 (2006.01); H04L 7/08 (2006.01); H04W 64/00 (2009.01);
U.S. Cl.
CPC ...
H04L 7/08 (2013.01); H04L 7/0016 (2013.01); H04L 7/041 (2013.01); H04W 64/003 (2013.01);
Abstract

A method includes, at a first node: transmitting a first synchronization signal at a first time according to a first clock of the first node; back-coupling the first synchronization signal to generate a first self-receive signal; calculating a time-of-arrival of the first self-receive signal according to the first clock; and calculating a time-of-arrival of the second synchronization signal according to the first clock. The method also includes, at the second node: transmitting the second synchronization signal at a second time according to a second clock of the second node; back-coupling the second synchronization signal to generate a second self-receive signal; calculating a time-of-arrival of the second self-receive signal according to the second clock; and calculating a time-of-arrival of the first synchronization signal according to the second clock. The method Sfurther includes calculating a time bias and a propagation delay between the pair of nodes based on the time-of-arrivals.


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