Research on Security of D2D Resource Sharing Based on Blockchain in Mobile Edge Network

Edge caching and computation offloading are potential technologies that can greatly reduce the pressure on the backhaul link and improve user response speed. However, a large amount of data exchange and resource transactions between users have security problems, and it is difficult to encourage users to participate. In this article, we propose a blockchain-based consensus protocol, as well as detailed formula steps and theoretical analysis in a mobile edge network D2D environment, where the blockchain acts as a trusted third party to maintain transactions between users. In order to improve the throughput of the blockchain, we jointly consider the trust feature of the blockchain nodes and controllers and the computing resource of the blockchain system, and by defining the state space, the problem is transformed into a Markov decision process. However, the traditional method is difficult to solve the joint problem, so we propose a method based on hierarchical reinforcement learning. The simulation result shows the effectiveness of the proposed scheme.