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:
Jun. 25, 2019
Filed:
Oct. 11, 2016
Ciena Corporation, Hanover, MD (US);
Ciena Corporation, Hanover, MD (US);
Abstract
Partial survivability systems and methods implemented in a node in an Optical Transport Unit Cn (OTUCn) network include, subsequent to an optical carrier (Optical Tributary Signal (OTSi)) failure of a plurality of optical carriers, determining which Optical Data Unit k (ODUk) services in an OTUCn associated with the OTSi are affected; signaling a partial failure for the OTUCn and a failure only for the affected ODUk services; adjusting overhead associated with the OTUCn based on the OTSi failure; and applying actions to the affected ODUk services subsequent to the OTSi failure. The signaling of the partial failure can include signaling one or more of a partial Alarm Indication Signal (P-AIS), a partial Backward Defect Indication (P-BDI), and a partial Server Signal Fail (P-SSF) for the OTUCn, and the signaling the failure can include signaling one or more of AIS, BDI, and SSF only for the affected ODUk services.