Ultra Reliable and Low Latency Authentication Scheme for Internet of Vehicles Based on Blockchain

In the scenario of highly mobile communication of Internet of Vehicles (IoV), identity authentication between vehicles not only needs to ensure security, but also needs to consider the problem of delay. The designed authentication scheme should meet the requirements of ultra-reliable and low latency in future B5G or 6G. We innovatively used the concept of network slicing to divide the interior of the vehicle into multiple compartments, and carried out PBFT consensus of blockchain among these compartments. Meanwhile, we introduce the channel estimation method to evaluate the relationship between the success rate of authentication and the time delay, which provides a reference for the deployment of PBFT consensus in IoV communication in the future.