Link fault probability quantification method in optical network and SDN controller deployment method

• Main Authors: HE YIMING, FANG ZIJIAN, YANG YUE, ZENG SHUAI, XU JIANG, ZHANG MINGYU, YAN JIPING
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a link fault probability quantification method in an optical network and an SDN (Software Defined Network) controller deployment method, belongs to the technical field of networks, and is applied to deployment of a two-layer SDN controller. In order to guarantee the survivability requirement of a user for a control plane and further reduce control redundancy and optimize control time delay on the premise, the maximum routing hop count J is set after the time delay requirement is negotiated with the user, the survivability requirement of a control link is negotiated, and the maximum fault probability P is set. Then, a simple path set meeting hop count constraint between any two nodes i and j in the network is calculated preferentially, and the fault probability between the nodes is calculated based on the assumption that optical segment faults are mutually independent. And then the fault probability is compared with the maximum acceptable fault probability, a node control relation meeti