Survivable hybrid optical/electrical data center networks using loss of light detection

US9742489B2 · kind B2 · utility

Assignee

• NEC CORPORATION · JP

Inventors

• Yawei Yin · Princeton, US
• Konstantinos Kanonakis · New Brunswick, US
• Philip Nan Ji · Cranbury, US
• Ting Wang · Plainsboro, US
• Shinya Nakamura · Nerima, JP

Key dates

• Filing date: Dec 7, 2015
• Grant date: Aug 22, 2017
• Expiry date: Dec 23, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2011/0081
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Systems and methods are disclosed for data communication by forming a hybrid that includes an electrical switching network with packet granularity of switching and store-and-forward forwarding services to network traffic and an optical switching network providing circuit granularity of switching and optical bypassing services to network traffic; applying local control of optical switching modules in the optical switching network with a network controller coupled to the electrical switching network, the optical switching network, and a loss-of-light detection module; and detecting loss-of-light in a failure point in the optical switching network and rerouting traffic to avoid the optical failure point.