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:
Oct. 13, 2009
Filed:
Apr. 30, 2007
Kevin S. Meagher, Bowie PG, MD (US);
Jack Mateosky, West River, MD (US);
Steven A. Surek, Leonardo, NJ (US);
Kevin S. Meagher, Bowie PG, MD (US);
Jack Mateosky, West River, MD (US);
Steven A. Surek, Leonardo, NJ (US);
Ciena Corporation, Linthicum, MD (US);
Abstract
The present invention provides systems and methods for mapping and multiplexing wider clock tolerance signals in Optical Transport Network (OTN) transponders and multiplexers. In one exemplary embodiment, the present invention allows wide tolerance signals, such as a 10 GbE with a ±100 PPM clock tolerance, to be 100% transparently mapped asynchronously into OTU2-LAN rate transport signals. In another exemplary embodiment, the present invention allows wide tolerance signals, such as a 10 GbE with a ±100 PPM clock tolerance, to be 100% transparently multiplexed asynchronously in to OTU3-LAN rate transport signals. The present invention utilizes extra Negative Justification Opportunities (NJO) in either unused OPUk overhead or in OPUk payload area and Positive Justification Opportunities (PJO) in OPUk payload area. Advantageously, the extra NJO and PJO provide additional bandwidth for client data rate offsets beyond OTN specifications.