Enhancing Fisheye State Routing Performance in MANETs Using SDN: An Evaluation Under Varying Node Mobility Patterns

Mobile Ad Hoc Networks (MANETs) are wireless systems which have self-organizing with random topologies, where node moving significantly impacts routing performance. Fisheye State Routing (FSR) is a proactive protocol that designed to reduce routing overhead, later it explained under highly random mobility patterns. This study merges the impact of four distinct mobility patterns (Random, Deterministic, Directed, and Network-Based) on FSR performance and explores enhancements by merging Software Defined Networking (SDN). Simulations were conducted using the NetLogo environment, tests key performance metrics: end-to-end delay, packet loss, delivery ratios, throughput, and routing overhead. Findings demonstrate that SDN enhanced FSR significantly outperforms traditional FSR across all moving models, with improvements of up to 12.5% in delay reduction and 20% in throughput. This research highlights the chance of SDN based architectures in beneficent adaptive routing for moving intensive MANET environments.