A Consensus Mechanism of Blockchain Based on Traffic Condition in Internet of Vehicles

Abstract

The application of blockchain technology in the Internet of vehicles has becomes an effective solution. Blockchain's consensus process is a key component that has a direct impact on the reliability and security of on-chain data. The design of the consensus mechanism is an efficient technique to encourage the integration of blockchain into IoV. Traditional Proof of Work and Proof of Stake consensus relies on the competition while wasting the majority of resources or may lead to unfair circumstances. Practical Byzantine Fault Tolerance consensus method has been proved to adapt to IoV well while rotation of primary node selection seems not suitable for IoV environment. Data in the Internet of Vehicles is highly regional and consensus with IoV is expected to be adapt to those specific data. To address the aforementioned issues to some extent, this paper suggests a consensus mechanism called Proof of Traffic Condition consensus. In order to better reflect the road data distribution, the proposed consensus mechanism suggests a new primary node election procedure based on road and historical on-chain information. Simulation experiments are carried out to prove the proposed consensus mechanism can effectively classify RSUs and appropriately describes roads.