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:
Aug. 01, 2017

Filed:

Apr. 13, 2015
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

John T. Chapman, Laguna Niguel, CA (US);

Yi Tang, San Jose, CA (US);

Lin Su, Shanghai, CN;

Tong Liu, Acton, MA (US);

Hang Jin, Plano, TX (US);

Assignee:

CISCO TECHNOLOGY, INC., San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 3/06 (2006.01); H04L 5/00 (2006.01); H04L 27/34 (2006.01); H04B 3/54 (2006.01); H04L 27/26 (2006.01); H04L 12/801 (2013.01); H04L 12/807 (2013.01); H04L 12/28 (2006.01);
U.S. Cl.
CPC ...
H04L 5/0007 (2013.01); H04B 3/542 (2013.01); H04J 3/0667 (2013.01); H04J 3/0673 (2013.01); H04L 5/006 (2013.01); H04L 12/2801 (2013.01); H04L 27/2697 (2013.01); H04L 27/3405 (2013.01); H04L 27/345 (2013.01); H04L 47/12 (2013.01); H04L 47/27 (2013.01);
Abstract

An example method for managing time offset and frequency drift in asynchronous Data Over Cable Service Interface Specification (DOCSIS) Remote Physical layer (R-PHY) network environments is provided and includes receiving, at a first hardware device, time synchronization message from a remote second hardware device in the DOCSIS R-PHY network, determining a time difference between a first clock at the first hardware device and a second clock at the second hardware device from the time synchronization message; and re-stamping an event message based on the time difference.


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