Performance Evaluation of Standard and Modified OLSR Protocols for Uncoordinated UAV Ad-Hoc Networks in Search and Rescue Environments

Widespread usage of unmanned aerial vehicles (UAVs) in new and emerging applications needs dynamic adaptive networking. The development routing protocols for UAV ad hoc networks faces numerous issues because the unique characteristics UAVs, such as rapid mobility, frequent changes network topology, limited energy consumption. Optimized Link State Routing (OLSR) protocol seems to be a promising solution it offers improved delay performance. It is expected that OLSR will satisfy strict demands real-time “search rescue” (SAR) missions involves most recent update information. classical its enhanced versions, D-OLSR, ML-OLSR, P-OLSR, use different techniques make an appropriate decision packets. These consider quality wireless link, type antenna, load, mobility-aware mechanism select best send message destination. This study evaluates examines performance original modified three SAR scenarios: (1) increasing (2) scalability, (3) allowed space UAVs. analyzes validates four OLSR-based protocols. determines OSLR by taking into account packet delivery ratio, latency, consumption, throughput. scenarios were simulated using NS-3.32. Based on simulation results, ML-OLSR outperforms OLSR, P-OLSR considered measures.