Optimization of Routing Protocol in Mobile Adhoc Networks

Abstract

Mobile Ad hoc Network (MANET) is the assortment of cooperative wireless nodes newlinewithout physical existence of any access network point or infrastructure. This thesis newlineaddresses issues pertaining to mobile adhoc networks due to lack of infrastructure and newlinedynamic mobility. MANETs are gaining attention in the increasing real life newlineapplications such as military, conference management system, search and rescue newlineapplications. Consequently, these are beneficial in classrooms, conventions where newlinestudents share their views dynamically through mobile devices. In these networks, newlineeach node in the network must be able to take care of routing of the data and this is newlinethe domain of ad-hoc routing. Requirement of efficient routing algorithm is a major newlinerequirement in mobile adhoc networks. Fulfillment of this requirement has been a newlinecomplex problem due to lack of fixed infrastructure and rapid movement of nodes. newlineThe mobility of these nodes imposes issues in terms of mobility management, energy newlineconsumption, battery life and security. The main contributions of the thesis are in the newlineareas of mobility management, random scenarios, battery life and processing activity newlineand security. In the thesis, comprehensive review of existing routing protocols and newlinetheir issues have been studied in detail. To provide secure routing in adhoc networks, newlineit is essential to authenticate each node. The presence of malicious nodes in an adhoc newlinenetwork deteriorates the network performance. In this thesis, two new algorithms newlinehave been proposed by enhancing the AODV (Adhoc On Demand Distance Vector). newlineEnhanced AODV provides a solution against threatening attacks in mobile adhoc newlinenetwork. Enhanced AODV method requests its next hop to send a confirmation newlinemessage to originating node by maintaining ECC (Elliptic Curve Cryptography) table. newlineAfter acquiring Route Reply (RREP) and confirmation message, the source node newlinedetermines the validity of paths. newline