Research On Resource Adaptation Method In Concurrent Access Of IPv6 Edge Gateway

With the rapid development of Industrial Internet,it will penetrate into every corner of industrial sites and connect all terminals and devices in industrial sites,while IPv4 is far from meeting the needs of Industrial Internet development due to the limited addresses.In order to enable terminals and devices to access the network,the deployment of industrial Internet IPv6 applications needs to be accelerated to meet the demand of the industrial Internet for massive address space.As a bridge between Industrial Internet devices and cloud platforms,the edge gateway provides a southbound module to support the data collection function of heterogeneous devices,and a northbound module to support terminal access functions.However,with the increase number of IPv6 industrial Internet equipment accesses,it puts huge pressure on the edge gateway and cannot guarantee that the edge gateway responds to terminal data requests in real time if a large number of terminals or edge devices access concurrently.In response to the above problems,this thesis systematically discusses resource adaptation methods under concurrent access of IPv6 edge gateways.Based on several common edge gateway resource adaptation methods,an IPv6 edge gateway adaptation is proposed.On the basis of several common edge gateway resource adaptation methods,an adaptive resource adaptation method combining priority queue and dynamic thread pool based on expiration time sorting is proposed to further improve the concurrency capability of IPv6 edge gateway.The main work of the thesis is as follows:1.By analyzing the characteristics of the IPv6 network and the edge gateway architecture,in view of the weak concurrent access performance of existing IPv6 edge gateways,an IPv6 edge gateway overall architecture that supports dynamic resource adaptation is proposed to support heterogeneous device access and concurrent terminal access.2.By analyzing the functional and non-functional requirements of IPv6 edge gateways,designing the hardware and software modules of the IPv6 edge gateway,an IPv6 edge gateway that supports northbound data services and southbound device data collection and management is realized.3.Through analyzing resource-constrained IPv6 edge gateways and summarizing polling resource adaptation methods,weight-based resource adaptation methods,IP address hash-based resource adaptation methods,and URL hash-based resource adaptation methods,an IPv6 edge gateway adaptive resource adaptation method combining dynamic thread pool and priority queue management based on expiration time sorting is proposed.4.Build an IPv6 edge gateway software and hardware test environment to test the access functions of heterogeneous devices in the IPv6 edge gateway,including edge node protocol conversion functions and data collection and transmission functions,and then the response time and load performance of the edge gateway under concurrent access test and compare and analyze the performance of several common resource adaptation methods.5.This thesis summarizes the main work and innovations done on IPv6 edge gateways,and puts forward the work that this thesis needs to do on IPv6 edge gateway research in the future.Experimental results show that the adaptive resource adaptation method proposed in this thesis can effectively improve the response time and performance of resource-constrained IPv6 edge gateways in the case of concurrent access by multiple terminals.