PERFORMANCE ANALYSIS OF ADHOC ON DEMAND DISTANCE VECTOR ROUTING PROTOCOL AND ITS ENHANCEMENT USING SECTORIZED ANTENNA

Abstract

Mobile Ad hoc Networks (MANET) are collection of autonomous mobile wireless devices (nodes) that form decentralized, self organizing and infrastructure-less wireless network among them. Mobility of nodes causes topological changes in network. MANET rely on dynamic routing protocols such as Adhoc on demand distance vector routing (AODV) with Expanding Ring Search (ERS) to reduce energy consumption and broadcast cost of searching. In AODV, network-wide flooding is initiated whenever any node wants to communicate with some other node to find the route between source and destination whereas in ERS, flooding is performed in successively larger area in network. In this thesis, first we analyze effect of efficient flooding using sectorized antenna applied on AODV and ERS in high density networks. Second, we propose an improved routing algorithm, Efficient AODV using Sectorized Antenna (EAODVSA), which improves flooding using sectorized antenna and reduces redundant flooding using unicasting to improve efficiency of ERS.