Research On Proactive Migration Mechanism Of SWIM Core Services

System Wide Information Management(SWIM)is a distributed,large-scale network that uses Service Oriented Architecture(SOA)to serve intelligent air traffic management(ATM)system.In order to ensure the safe and efficient air transportation,it is necessary to ensure that SWIM core services are continuous and robust in the face of cyber security threats.Therefore,based on the analysis of the security threats faced by SWIM services and the transmission process of SWIM shared data,a proactive migration mechanism of SWIM core services is proposed,focusing on the proactive migration model based on situation awareness and the SWIM service dynamic migration model.The proactive migration model based on situation awareness can guarantee the continuity of service from the perspective of improving SWIM emergency response capability.The model uses the random forest algorithm to distinguish the security situation of the SWIM service provider,and proactively migrates the SWIM service authority according to the security situation to reduce the impact of the emergency on the SWIM service.Experiments show that the model has higher reliability and stability than the SWIM network without the service proactive migration model.The SWIM service dynamic migration model can enhance the system’s tolerance from the perspective of improving SWIM survivability.The model is designed with a trigger mechanism combining random sequence and time interval to ensure the time randomness of service migration.The strategy of combining Brownian motion model with optimal service quality is used to select the target node.Experiments show that the model achieves the function of covering target and continuing service,and has higher service invulnerability,which can coordinate the balance between continuity and security of SWIM services.