Research And Verification Of Key Technologies Of Edge Gateway For Industrial Internet

With the popularization of industrial Internet concepts and the implementation of technology,more and more computing services from the cloud to the edge of the network processing and execution.As the node closest to the data source,the edge gateway itself provides edge computing capability,which can well adapt to the requirements.However,the traditional gateway still has some problems in adapting link quality to service requirements when the data is processed centrally.At the same time,there is a lack of relevant research on device collaboration and resource combination of scattered underlying devices on the edge side.In this thesis,a new edge gateway architecture for industrial Internet scenario is built,and the collaborative scheduling,flexible access and resource combination technologies in edge gateway are studied and verified.The main work is as follows:(1)Aiming at the problem that the change of terminal wireless network cannot guarantee the service quality,this paper designs a method and system for improving the large uplink service rate of industrial Internet based on multi-terminal collaboration.According to the changing requirements of services on terminals,the adaptive transmission switching between multiple terminals and the multi-link adaptive transmission system for large upstream services are implemented,and the two-layer adaptation between services and terminals and terminals and networks is completed.The experimental results show that the proposed method can realize multi-terminal adaptive collaboration and improve user experience in terms of delay and interface service quality.In addition,the multi-stream concurrent transmission system designed by this system can effectively aggregate the link bandwidth,and the experimental test shows that the multi-link concurrent data rate is about 85% of the superimposed value of the single link rate.(2)Aiming at the problem that the network cannot match multiple services adaptively in complex edge environment of industrial Internet,this paper designs an adaptive link matching method of edge gateway for multi-service Qo S guarantee.The service type judgment module,link status detection module,link performance evaluation module and data scheduling and forwarding module are set in the intelligent edge gateway to obtain link quality in real time.The link selection algorithm is executed for service type to label data packets.The data scheduling and forwarding module forwards data packets to corresponding physical links for transmission according to label values.The experimental results of the system show that the method designed in this paper can adaptively allocate services to the optimal link for transmission,and ensure the Qo S requirements of various services.(3)A prototype verification system for industrial Internet coverage network is designed and built.The underlying physical device information model is built to analyze the requirements of event-driven networking and cloud-oriented networking.Demand-driven,scattered device resources are reorganized according to their functional attributes through group creation and registration module,group query module,group deletion module and group addition module for group maintenance.Nodes in the covering network are logically connected without changing the underlying physical network architecture to provide network services for multiple demands.The experimental results show that the system established in this paper can effectively integrate resources according to the requirements of multiple services.