Performance Evaluation of QoS-Aware Routing Protocols for IoT Wireless Networks

Abstract

IoT wireless networks are a fundamental component of the Internet of Things ecosystem, offering extensive coverage and the capability to wireless connect a diverse array of devices. These networks span large geographic areas, such as smart cities, industrial facilities, and remote agricultural regions. Understanding the unique characteristics of QoS-aware routing protocols is essential for evaluating their performance in this context. Examining challenges such as intermittent connectivity, limited bandwidth, and energy constraints is crucial for understanding the complexity of delivering reliable Quality of Service (QoS) in IoT wireless networks. Routing protocols play a crucial role in guiding data transmission in networks, determining how data packets are routed from the source to the destination. The study employed an extensive simulation-based approach to evaluate the performance of quality of service (QoS)-aware routing protocols in Internet of Things (IoT) wireless networks. Using simulation environments in Network Simulator 2.35, we created various scenarios to replicate real-world IoT applications. These scenarios varied in terms of network topology, traffic patterns, and device constraints in order to comprehensively assess protocol performance. The assessments were conducted in two modules, with AODV demonstrating efficiency in scenarios involving low end-to-end delay, packet loss, and routing overhead. It excelled in achieving a high packet delivery ratio and throughput. This article provides a comprehensive analysis of the QoS awareness of protocols such as AODV, AOMDV, and DSDV, highlighting their suitability in different Internet of Things (IoT) scenarios. Additionally, it provides new perspectives on optimizing Quality of Service (QoS) in the constantly changing environment of wireless networks in the Internet of Things (IoT).