Trustworthy Access Control for Multiaccess Edge Computing in Blockchain-Assisted 6G Systems

Blockchain is a revolutionary technology for constructing trustworthy communications for 6G multiaccess edge computing (6G-MEC). Designing a blockchain-based access control system for 6G-MEC is challenging due to the highly heterogeneous edge devices (EDs) in 6G-MEC. However, traditional blockchain-based access control methods cannot satisfy the heterogeneous device scenarios and are unable to assign voting weights based on the performance of EDs. In this article, we propose a trustworthy access control method for 6G-MEC networks and demonstrate how blockchain can be utilized in our proposed blockchain-assisted multiaccess control approach. Our approach develops an attribute validation and a validation weight method to offer strengthened access control in a decentralized context. We have proposed a trustworthy access control for multiaccess edge computing by using a multitier blockchain architecture and a reinforcement-learning-based weight determination algorithm for ED to eliminate the influence on blockchain consensus behavior. Experimental results demonstrate the effectiveness of our proposed approach.