Latency Minimization in Blockchain-Enabled Fog Computing Networks: A Novel Byzantine Fault Tolerance Approach
Assadig Abdelrhman Sajo, Xiaoge Huang, Almoatssimbillah Saifaldawla, Qianbin Chen · 2021
Recently, fog computing networks (FCNs) have shown enormous benefits yet suffer from security and privacy issues. Blockchain technology has been introduced as a solution to these issues. Nevertheless, it brought new challenges. In this paper, we propose Smart Byzantine Fault Tolerance (SBFT) algorithm for blockchain-enabled FCNs. The proposed algorithm is designed to overcome the challenges of deploying BFT algorithms into FCNs. Such as high latency, computational cost, and communication overhead. The problem was formulated to achieve low latency for the system by optimizing task computation resource allocation, task partitioning, transmission power control, and blockchain computation resource allocation while ensuring the system's security. Simulation results were conducted to illustrate the effectiveness of the proposed algorithm, which can achieve low latency, computational cost, and communication overhead.