Design And Implementation On Test Scheme For Time Sensitive Network

In recent years,as a new generation of Ethernet technology,Time-Sensitive Network(TSN)technology has the ability of accurate traffic scheduling due to its standard Ethernet architecture.It has both technical and cost advantages and can guarantee the high quality transmission of common network of various business traffic.It has attracted attention in many fields such as audio and video transmission,mobile bearer,vehicle network,and become the evolution direction of the next generation of industrial network.However,there is a lack of in-depth and effective research on the test of time-sensitive network at home and abroad,which brings some obstacles to the further research,development and practical application of this technology.Testing of time-sensitive network can comprehensively and quickly examine the latest progress of time-sensitive technology,and provide strong support for the development and application of time-sensitive network technology.In this paper,the research background and significance of time-sensitive networks are analyzed,and the key characteristics and relevant testing technologies of time-sensitive networks are investigated.On this basis,a time-sensitive network testing scheme is proposed to solve the problem of lack of effective testing schemes for time-sensitive networks.This scheme classifies and arranges the test requirements of time-sensitive network,and puts forward corresponding test methods for actual test.The main work is as follows:(1)Propose a time-sensitive network test scheme.Firstly,the requirements of time-sensitive network testing are analyzed.Then,based on the characteristics of Ethernet,time-sensitive network and related testing technologies,a time-sensitive network testing scheme is proposed.The test content is divided into three categories:functional test,protocol test and networking test.The design and classification of the scheme are expounded,and the test requirements and content of each module are analyzed.(2)The time synchronization function and flow scheduling function in the time-sensitive network are measured.Based on the realization principle of time synchronization,the test content is divided into synchronization mechanism test and synchronization performance test.Based on the implementation principle of traffic scheduling,the test content is divided into traffic filtering and caching and GCL configuration and execution.Prove the feasibility of the test scheme and explain and analyze the test principle and results.(3)Based on the protocol conformance test module in the time-sensitive network test scheme,the specific test implementation is completed.Firstly,according to the time-sensitive network protocol standards,the conformance requirements of the protocol are analyzed,and the testing methods to be adopted are defined.The test environment was built,the remote test method was adopted,and combined with the implementation principle of TAS in IEEE 802.1Qbv,the test of the default state of the gated list,the execution and switch of the gated list state and the queue maximum service data unit were passed respectively.The experimental results verified the feasibility of the test scheme.