A multi-domain fault diagnosis method for power communication network under network virtualization environment

Abstract

The invention provides a power telecommunication network multi-domain fault diagnosis method under network virtualization environment. The method comprises three parts: SP fault deduction, SP belief evaluation, and multi-SN fault deduction; as SP fault deduction module computes a belief function value BF of each link fault probability, creates a fault propagation model according to each link faultprobability and the SO, and obtains a minimum fault set explanation syndrome set for explaining the observed syndrome, thereby effectively solving the problem that the underlying network informationis inaccessible; the multi-SN fault deduction module analyzes the syndrome, generates FPM abstracts, combines FPM abstracts of all SNs and performs the fault deduction, thereby effectively solving theproblems of the inter-domain propagation of multiple underlying network domains and the absence of the global information. The algorithm provided by the invention acquires the good accuracy rate andshort diagnosis time.

Description

technical field [0001] The invention relates to the technical field of electric power communication network fault diagnosis, in particular to a multi-domain fault diagnosis method for electric power communication network under a network virtualization environment. Background technique [0002] Because network virtualization technology has great advantages in improving network resource utilization, convenient maintenance and expansion, and high reliability, network virtualization has become a key technology for the transformation of power communication networks. In the network virtualization environment, the traditional power communication network is divided into two parts: the underlying network (Substrate Networks, SN) and the virtual network (Virtual Networks, VN). Among them, the SN is managed by the infrastructure provider (Infrastructure Provider, InP). The VN is managed by a service provider (Service Provider, SP). After the network is divided, because the information...

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Problems solved by technology

[0003] In order to solve the problems such as the large amount of fault inter-domain propagation information and the lack of underlying network information in the multi-domain service fault diagnosis process in the network virtualization environment, the present invention provides a power communication network multi-domain fault diagnosis under the network virtualization environment A diagnostic method comprising the steps of:

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