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:
Dec. 28, 2021
Filed:
Aug. 24, 2020
Applicant:
Ciena Corporation, Hanover, MD (US);
Inventors:
Assignee:
Ciena Corporation, Hanover, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/04 (2006.01); H04L 7/00 (2006.01); H04L 12/46 (2006.01);
U.S. Cl.
CPC ...
H04L 7/0008 (2013.01); H04L 7/0041 (2013.01); H04L 7/0079 (2013.01); H04L 7/0091 (2013.01); H04L 12/4633 (2013.01); H04L 2212/00 (2013.01);
Abstract
A node can include a clock; and mapper circuitry configured to determine a timestamp from the clock, and transmit the timestamp to a second node in a Radio over Ethernet (RoE) frame with the timestamp in a control subtype and with an operational code (opcode) that designates the timestamp is in the frame. The node can also include a demapper circuit configured to receive a second timestamp from the second node in a second RoE frame, and provide the second timestamp to a Differential Clock Recovery (DCR) circuit for adjustment of the clock to a second clock at the second node.