SmartSLA: Enabling Quality of Service in Blockchain-Enabled IoT Networks

The significant advancement in Internet of Things (IoT) adoption has enabled Multi-access Edge Computing (MEC) to mitigate IoT sensors' limited computational, transmission power constraints, and data distribution overhead. However, integrating MEC with the IoT ecosystem poses several challenges, resulting in integrity issues with the MECs, impacting their capacity to effectively serve users seeking data generated by IoT sensors. To address this, we propose SmartSLA, a blockchainbased solution to ensure Quality of Service (QoS) from thirdparty IoT devices. SmartSLA leverages the decentralized and immutable nature of blockchain to combat the shortcomings of MECs. Using smart contracts, we develop a blockchain solution to address a multi-objective optimization problem centered around QoS, user satisfaction, and maximizing the lifespan of IoT devices. Leveraging blockchain, we developed an edge-enhanced IoT network and assessed the efficacy of proposed novel dynamic reassignment strategies to enhance user satisfaction with data delivery. Our architecture demonstrate the high performance over time in regards to user satisfaction and SLA adherence, as well as the scalability compared to existing work.