Design And Implementation Of Collaborative Driving For Intersections Control Based On LTE-V2X

The rapid development of vehicle networking technology is a hot spot in the field of traffic control and automatic driving.The vehicular network can help vehicles with different directions to coordinate with each other at the intersection.Based on the theory of collaborative driving of vehicles and LTE-V2X technology,this paper studies the cooperative driving of connected and intelligent vehicles at unsignalized intersections.First of all,we propose a LTE-V2X based intersection platoon control scheme for non-traffic light community.Two algorithms,which are the intersection platoon generation and maintenance algorithm,and the platoon priority algorithm,are designed and implemented.The intersection platoon generation and maintenance algorithm can assist the sub-platoon leader to collect and maintain the information of the vehicles in the sub-platoon,so as to ensure the accuracy and instantaneity of the information.Three types of information packets are defined for vehicles at intersection,which are used for information transmission,aggregation and distribution.Analysis and simulation results show that the proposed method works better on reducing the delay,shortening travel time and reducing pollution,compared with other intersection control methods.Secondly,in order to solve the problem of information security and privacy preserving of vehicles in V2X communication,an anonymous vehicle authentication scheme based on blockchain technology is proposed.The scheme employs a hybrid cryptography based on identity and hash message authentication code,and records the authentication results in blockchains,which can improve the efficiency of data interaction and the anti-tamper ability of the system.Lastly,we establish the intersection model,LTE-V2X network model and platoon model by using Veins to simulate the algorithms we propsed in this paper at the multi-intersections scenario.Simulation results show that the algorithms we propsed ensures the anonymity and privacy-preserving,and have traceability while ensuring user privacy.What's more,it has relatively high practical value in the process of vehicle identity authentication.