Performance Evaluation and Enhancement of Mobile Ad- Hoc Network (MANET) Routing Protocols

Abstract

A primary callenge of MANET is to design an effective routing algorithm than can adapt its behaviour to frequent and rapid changes nature of the network topology to have a shortest path between sources and destinations with low overhead and delay. Ant routing concept is a new scheme for routing inspired by the behavior of real ants. Real ants are able to find the shortest path to a food source by following the trail of a chemical substance called pheromone deposited by other ants. This thesis presents a novel scheme for MANET routing protocol called Intelligent Ant sense for mobile ad hoc routing protocol (INTANTSENSE). It utilizes a behavoiur studies of “ants” in nature known as ant colony optimization to perform optimal routing activities. By combining the capability of reactive routing with distributed and multipath routing mechanism also uses the ring search model, Intelligent Ant Sense protocol displays a satisfactory performances; optimal path routing, fast route discovery and effective routing failure handling. This thesis study the intelligent ant sense protocol across a personal area network with IEEE 802.15.4 WPAN. The intelligent ant sense protocol written and compiled to network simulator NS-2 to have the performance and compared with AODV protocol. Then, a performance comparison has been done under conditions of speed , mobility and number of nodes . Results show that the intelligent ant sense protocol ensure lower overhead and delay than AODV protocol with high packet delivered ratio but give low throughput and slightly high data loss.