Trusted reputation system for heterogeneous network resource sharing based on blockchain in IoT

With the evolution of 5G networks and IoT technology, an enormous amount of network resource demands are rising, which can no longer be met by operators' independent construction, and network resource sharing will become the core trend of future development. However, network resources are characterized by diversity and decentralization, and how to effectively promote the interconnection and comprehensive sharing of resources that belong to different resource providers to meet the demands of diversified services is a critical issue. Considering the superior advantages of blockchain technology in distributed systems, we propose a blockchain-based decentralized solution for network resource sharing and define a trusted reputation system in this paper. A two-layer distributed network resource-sharing architecture is proposed. Based on this architecture, a reputation system is designed. Based on the behavior of the network resource provider, the sharing reputation is quantified to provide a reference for the network resource requester to choose suitable resources. Then a reputation-based shard parallel consensus algorithm is developed. Finally, the simulation experiments are designed to analyze the performance of the reputation system. The results show that with the support of the reputation system, the resource-sharing system will develop healthily.