Node Failure Affecting Impact Analysis For Aeronautical Ad Hoc Network

Aeronautical ad hoc network(AANET)is a complex network which is composed of various aircraft and a few necessary base stations and can cover the business requirements in the aviation field.Due to the limited business processing capacity,when network security events occur,it is easy to cause node failure affecting impact reaction and then cause massive network nodes failed.Node failure impact reaction refers to the phenomenon that when a network node failed,the network allocates failure traffic to adjacent nodes to ensure the overall business quality,which causes adjacent nodes failed.Therefore,analyzing the process of node failure affecting impact and quantifying the degree of network affecting impact in AANET is helpful for managers to maintain the network and improve the stability of the network after the occurrence of network security incidents.Firstly,the structural characteristics of the AANET are described,and the related security threats of the AANET are introduced.The mainstream methods of interdependent network modeling,failure propagation model,and node failure affecting impact analysis method are described and analyzed,which provides a theoretical basis for the subsequent establishment of node failure affecting impact analysis model for AANET.Secondly,a node failure affecting impact analysis model for AANET is proposed.The directed weighted business network is established based on the main business of AANET,the undirected weighted physical network was established with various aircraft as the node based on real-time AANET,and the interdependent network model is built through the business-physical network mapping relationship.A failure propagation model for AANET is proposed,and the node state and transition mode are defined.A failure traffic redistribution algorithm is improved based on link survivability,which is applied to the established business-physical network model to get the set of failed nodes and business degradation nodes.Then these sets are used to analyze the affecting impact of the network at every moment.Finally,the model is implemented by a simulation experiment.Two different attack methods,random attack and deliberate attack,are adopted in the experiment.The business network and physical network are taken as attack objects respectively to verify the effectiveness and accuracy of the model in the node failure affecting impact analysis for AANET.The experimental results show that the model can accurately represent the node failure affecting impact reaction and the change of network operation state,and effectively evaluate the affecting impact of node failure on the network.