Heuristic constraint driven optical channel protection

US10602246B2 · kind B2 · utility

Assignee

• Infinera Corp. · US

Inventors

• Rajan Rao · Cupertino, US
• Nikhil Kumar Satyarthi · Bengaluru, IN
• Ashok Kunjidhapatham · Vittasandra, IN
• Baranidhar Ramanathan · Bengaluru, IN
• Biao Lu · Cupertino, US

Key dates

• Filing date: May 22, 2017
• Grant date: Mar 24, 2020
• Expiry date: May 22, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2011/0083
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Embodiments herein include methods and apparatuses for providing optical channel protection by a switching controller in an optical networking system. The switching controller may receive, from a light module, a digital fault status message that indicates whether a digital frame demodulated from an optical signal include a fault. The switching controller may receive from an Optical Supervisory Channel (OSC) module, an Optical Layer Defect Propagation (OLDP) status message that indicates an OSC status of the optical signal on a current optical path. The switching controller may receive, from an Optical Add Drop Multiplexer (OADM) module, an optical power status message that indicates a measured power level of the optical signal on the optical path. Based on at least one of the OLDP status, the optical power status, or the digital fault status message, the switching controller may determine the optical path as a working path or a protecting path.