基于区块链车联网中的区块传播建模分析

Modeling and Analysis of Blockchain-Based Block Propagation in Internet of Vehicles

将区块链技术应用到车辆网络中可以在不可信的异构节点之间提供可信的去中心化环境,其中共识是区块链系统的重要问题,大多数研究都假设共识过程中,区块在不同节点间的传播时间是可忽略的,然而当区块链应用于车辆无线网络时,节点的频繁移动会改变网络的拓扑结构,增加了信息传输的不确定性,此时区块的传播时间不再可以忽略。本文研究了车辆网络中节点间的区块传播,基于SEIR提出了一种新的区块传播模型,从宏观角度研究基于区块链车辆网络的区块传播。本文通过仿真实验分析了节点的速度、通信范围、区域大小对区块传播趋势的影响。

The application of blockchain technology to the vehicle network can provide a credible decentralized environment between untrusted heterogeneous nodes,in which consensus is an important problem of the blockchain system,most studies assume that in the consensus process,the propagation time of blocks between different nodes is negligible,but when the blockchain is applied to the vehicle wireless network,the frequent movement of nodes will change the topology of the network,increase the uncertainty of information transmission,and the propagation time of the block can no longer be ignored.In this paper,we study the block propagation between nodes in the vehicle network,and propose a new block propagation model based on SEIR to study the block propagation based on the blockchain vehicle network from a macro perspective.In this paper,the influence of node speed,communication range,and region size on the block propagation trend is analyzed through simulation experiments.