Research On Performance Analysis And Optimization Strategy Of Internet Of Vehicles Based On Blockchain

In the era of the Internet of Everything,Internet of Vehicles(Io V)technology,as a typical application of Internet of Things(Io T)technology in the field of intelligent transportation,has been widely studied.However,due to the centralized management of nodes in the Io V and the openness of communication,the system may suffer from information security and integrity problems caused by privacy leakage and single point of failure.In view of the above problems,this paper proposes to apply the decentralized blockchain technology to the scene of Io V.Considering that the Io V usually has the characteristics of fast movement,limited resources,large scale and high transaction demand,discussing the impact of the wireless Io V environment on the performance of the blockchain consensus algorithm and ensuring the stability of the blockchain in the Io V environment have become a problem worthy of study.The main work of this paper is as follows:In view of the Io V scenario with limited resources,high transaction concurrency and mobile characteristics,this paper proposes a two-layer wireless blockchain network architecture based on Dedicate Short Range Communication(DSRC)technology.Firstly,the M/G/1 queuing model is used to analyze the delivery process of transactions in the wireless environment,and the Markov chain model is established to deduce the service process.Then,the verification processes of Proof of Work(Po W)and Directed Acyclic Graph(DAG)are analyzed and compared.The analysis results show that the proposed framework is feasible to some extent.Meanwhile,the Io V performance based on DAG algorithm is mainly affected by wireless environment,while the network performance based on Po W algorithm is limited by its own consensus mechanism.Finally,the comparison shows that DAG algorithm is more suitable for Io V environment with high concurrency than Po W algorithm.This study provides guidance for the application of blockchain technology in actual Io V scenarios.Second,in order to ensure the smooth operation of blockchain technology in the lo V system,promote the system consensus among blockchain miners and improve the security performance of the network,this paper proposes an incentive mechanism based on the Stackelberg game model to simulate the interaction between blockchain users and miners.In this mechanism,the follower blockchain users submit transactions,their requirements are lower response delay,miners are the leaders,pay computing and storage resources to verify the user’s transactions.By solving the game model between the blockchain users and miners,the goal of reducing the response time of users and maximizing the mining benefits of miners is achieved,and the influence of wireless communication environment on the game process is also considered.The simulation results show that the scheme proposed in this paper can effectively guarantee the benefits of blockchain users and miners,and improve the security and stability of blockchain network.