Broadcast Algorithm Research On Vehicular Network And Hardware Test

The research on security applications in the Internet of Vehicles is an important part of the Internet of Vehicles,and the Internet of Vehicles broadcasting technology is the main technology to realize the security application of the Internet of Vehicles.The vehicles will receive the emergency message with high reliability and low latency through the vehicle network broadcasting technology,then a quick response will be made ensuing higher safety.At the same time,sufficient testing under the actual scene is also very necessary before the application of the Internet of Vehicles technology is applied to the real scene.Therefore,this paper focuses on broadcasting technology the Internet of Vehicles and its hardware measurement in real scene.Firstly,the related principle of the Internet of Vehicles is studied.The index parameters of different application scenarios are given.The categories of V2X are introduced and the prospects of the two technical solutions are analyzed.The three resource selection schemes existing in the Internet of Vehicles and the research status of broadcasting strategies in the Internet of Vehicles are studied.The research status of the vehicle networking software simulation platform and hardware measurement work is analyzed,and a new simulation platform suitable for LTE-V is built.Secondly,based on the delay forwarding mechanism and resource reservation mechanism,a limited delay broadcast scheme is proposed.Based on the built LTE-V vehicle network simulation platform,the algorithm performance of the scheme in urban scenes and high-speed scenes under V2V and V2I is studied.The performance of the limited delay scheme under maximum forwarding delay time,node density,and maximum delay are evaluated.Finally,the actual scenario test of the limited delay broadcast was performed.Based on the openwrt development board,the actual hardware simulation platform is built,and the indoor,outdoor,resource reservation scenarios and the limited delay broadcast of WiFi and LTE-V devices are completed.The final test results are analyzed and verify the practicality of limited delay broadcast in actual scenarios.The research results show that the designed restricted delay broadcast algorithm is suitable for V2V and V2I,and can greatly improve the packet delivery ratio and stability of the Internet of Vehicles broadcast in high-speed scenes and urban scenes without increasing the delay.In addition,the hardware scene based on the designed hardware simulation system also shows that the limited delay broadcast algorithm can improve the performance of the broadcast of vehicles network in the real scene.The limited delay broadcast algorithm has practical value in the real scene.