FaTEMa: A Framework for Multi-Layer Fault Tolerance in IoT Systems

Abstract

Fault tolerance in IoT systems is challenging to overcome due to its complexity, dynamicity, and heterogeneity. IoT systems are typically designed and constructed in layers. Every layer has its requirements and fault tolerance strategies. However, errors in one layer can propagate and cause effects on others. Thus, it is impractical to consider a centralized fault tolerance approach for an entire system. Consequently, it is vital to consider multiple layers in order to enable collaboration and information exchange when addressing fault tolerance. The purpose of this study is to propose a multi-layer fault tolerance approach, granting interconnection among IoT system layers, allowing information exchange and collaboration in order to attain the property of dependability. Therefore, we define an event-driven framework called FaTEMa (Fault Tolerance Event Manager) that creates a dedicated fault-related communication channel in order to propagate events across the levels of the system. The implemented framework assist with error detection and continued service. Additionally, it offers extension points to support heterogeneous communication protocols and evolve new capabilities. Our empirical results show that introducing FaTEMa provided improvements to the error detection and error resolution time, consequently improving system availability. In addition, the use of Fatema provided a reliability improvement and a reduction in the number of failures produced.

Методи Відмовостійкості Резервування Пристроїв Iot

“…Having major things depending on the quality of work of small microcontrollers reporting their information for the future analysis and decision making, it is getting hard to lose some data. For instance, if there are two channels for the information: one for the standard status and another for warning and error messages as it is described in fault tolerance event manager practice [1], and one channel stops sending messages. This might cause major issues in perception of the real state of things and cause wrong behavior and decision making.…”

Role-Driven Clustering of Stakeholders: A Study of IoT Security Improvement

“…The management of IoT security and clustering stakeholders face several bottlenecks [ 3 , 4 , 5 , 6 ], including scalability challenges, heterogeneity and interoperability issues, privacy and data protection concerns, collaboration and communication gaps, adaptability to dynamic IoT environments, and optimizing security measures for resource-constrained IoT devices. To overcome these challenges, it is essential to engage in multidisciplinary research efforts and make advancements in security protocols [ 5 ], privacy-enhancing technologies [ 5 ], standardization [ 6 , 7 ], collaborative frameworks [ 7 , 8 ], and resource-management techniques [ 5 ]. By effectively addressing these bottlenecks, the field of IoT security and stakeholder management can make substantial progress in achieving secure and sustainable IoT deployments.…”