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:
Nov. 15, 2011
Filed:
Dec. 26, 2006
Morteza Ghodrat, Kanata, CA;
Michael A. Gazier, Ottawa, CA;
Ian H. Duncan, Ottawa, CA;
Ciena Corporation, Linthicum, MD (US);
Abstract
The present invention reserves special Ethernet timing packets to mark timing within Ethernet and OTN, and secondarily creates frames within the Ethernet stream through the timing marker packets. The result is standard Ethernet with timing capability that can be transported over standard Ethernet links and/or within OTN. This timing capability can be utilized to carry synchronization over asynchronous Ethernet and OTN streams. Advantageously, enabling Ethernet and OTN to carry synchronous information will de-risk switching from SONET/SDH to Ethernet and/or OTN for service providers. The present invention also includes frame decomposition of the Ethernet stream. Ethernet packets are broken into fixed bandwidth and excess bandwidth. The fixed bandwidth is subdivided into fixed (negotiated) flits, with each flit corresponding to a specific user or combination of users like a private tunnel. This offers service providers a method to provide deterministic and more secure bandwidth over Ethernet to multiple clients.