Attack-aware multi-domain elastic optical network routing and spectrum allocation method and system

Abstract

The invention provides an attack-perceived multi-domain elastic optical network route and frequency spectrum distribution method and system. The method comprises the following steps: classifying services according to service paths when the services arrive so as to determine the services of the LRps type, the LRst type and the LRin type, wherein the LRps expresses passing through or ending at the domain, the LRst expresses starting from the domain, and the LRin expresses that a source node and a host node are in the domain; determining a candidate path set through a step; estimating an in-domain path of each candidate path by use of a safe estimation matrix aiming at each candidate in the candidate path set, thereby determining the path with the minimum entire security risk; distributing a transmission optical path for the service of each type based on the determined path; and distributing the frequency spectrum for the service on the selected transmission optical path based on the attack perception constraint. Through the adoption of the method and system provided by the invention, the possible security threat can be estimated so as to perform the route selection and frequency spectrum distribution according to the estimation result; therefore, the attach can be effectively perceived, and the physical layer security of the multi-domain elastic optical network is enhanced.

Description

technical field [0001] The invention belongs to the technical field of communications, and in particular relates to an attack-aware multi-domain elastic optical network routing and spectrum allocation method and system. Background technique [0002] In a multi-domain optical network, inter-domain super-channels carry large-capacity data. If the optical-to-electrical conversion is not performed at the border nodes, due to the loopholes in the physical layer of the optical network itself, for example, different customers share optical components, which will bring a variety of physical layer security threats (crosstalk between channels, gain competition, etc.). Today, transparent optical networks have become an important direction for future optical network development and evolution due to their advantages of high speed, low latency, and low cost. The implementation of photoelectric conversion will greatly increase capital expenditure and operating expenditure, and cannot meet ...

AI Technical Summary

Problems solved by technology

Assume that the multi-domain elastic optical network is transparent or semi-transparent, and the border nodes do not undergo electrical processing. In this scenario, if the existing intra-domain service provision solution is used to process intra-domain and inter-domain service requests, the security issues of the inter-domain physical layer are ignored. Once attacked, the loss caused will be unimaginable

For example, attackers can implement cross-domain attacks by inserting interference signals from adjacent domains to eavesdrop and tamper with information, which will greatly reduce the transmission quality of super channels and bring great security threats to the network.

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