Secure and Efficient Computing Resource Management in Blockchain-Based Vehicular Fog Computing

In vehicular fog computing(VFC), the resource transactions in the Internet of Vehicles(Io V)have become a novel resource management scheme that can improve system resource utilization and the quality of vehicle services. In this paper, in order to improve the security and fairness of resource transactions, we design a blockchain-based resource management scheme for VFC. First, we propose the concept of resource coin(RC) and develop a blockchain-based secure computing reource trading mechanism in terms of RC. As a node of the blockchain network, the roadside unit(RSU) participates in verifying the legitimacy of transactions and the creation of new blocks. Next,we propose a resource management scheme based on contract theory, encouraging parked vehicles to contribute computing resource so that RSU could complete proof of work(Po W) quickly, improve the success probability of block creation and get RC rewards.We use the gradient descent method to solve the computing resource utilization that can maximize the RC revenue of RSUs and vehicles during the block creation. Finally, the performance of this model is validated in simulation result and analysis.