A COMPREHENSIVE PERFORMANCE ANALYSIS OF WLAN PROTOCOLS USING THE NS-2 NETWORK SIMULATOR

Abstract

Objective: This project focuses on simulating a Wireless Local Area Network (WLAN) using NS-2, specifically targeting a peer-to-peer (Ad-hoc) network. Method: By utilising an Independent Basic Service Set (IBSS), we enabled wireless devices to communicate directly with one another without relying on a central access point or base station. A network bridge was also integrated to connect the WLAN to external networks. Our approach began with a thorough examination of wireless simulation types and the key factors that influence network performance. From there, we mapped out a topology modelled after a university campus, strategically spacing out wireless nodes and adjusting their transmission power to ensure full coverage. To evaluate efficiency, we measured key performance metrics—including packet delivery ratio, delay, jitter, and throughput—and analysed how they scaled with traffic volume. Finally, we deployed and compared three routing protocols (AODV, DSR, and DSDV) to find the most efficient fit. Results: Ultimately, this allowed us to design a highly optimised, resource-efficient network layout that maximises performance without wasting bandwidth. Novelty: This project compares the performance of AODV, DSR, and DSDV routing protocols within an IBSS-based WLAN simulation to identify the most efficient protocol for a university campus network topology.