New M.E.Thesis Submitted from ECE student


A COMPREHENSIVE PERFORMANCE ANALYSIS OF MOBILE AD HOC ROUTING PROTOCOLS UNDER HIGH DATA TRAFFIC AND HI DEFINITION VIDEO CONFERENCING By Barjinder S. Kaler,Electronics

Abstract
The usage of wireless technologies, such as, Mobile Ad Hoc Networks (MANETs) are increasing and it influences the development of new theories and structures for the communications. The mobility of nodes in a Mobile Ad Hoc Network results in frequent changes of network topology, making routing in MANETs a challenging task. Many protocols have been proposed for MANETs. These protocols can be divided into three categories: proactive, reactive, and hybrid. Proactive methods maintain routes to all nodes, including nodes to which no packets are sent. Such methods react to topology changes, even if no traffic is affected by the changes. They are also called table-driven methods. Reactive methods are based on demand for data transmission. Routes between hosts are determined only when they are explicitly needed to forward packets. Reactive methods are also called on-demand methods. They can significantly reduce routing overhead, when the traffic is lightweight and the topology changes less dramatically. They do not need to update route information periodically and do not need to find and maintain routes on which, there is no traffic. Hybrid methods combine proactive and reactive methods to find efficient routes, without much control overhead. Optimized Link State Routing (OLSR) protocol is analyzed as proactive routing protocol which is designed to work in a completely distributed manner. It does not depend on any critical entity. Ad-Hoc on Demand Distance Vector (AODV) protocol is analyzed as Reactive routing protocol which is designed to be self starting in mobile nodes and withstands a variety of network behaviours such as node mobility, link failure and packet losses. It consists of two mechanisms, Route Discovery and Route Maintenance. Zone Routing Protocol (ZRP) is analyzed as Hybrid protocol. It consists of all the advantages of both proactive protocol and reactive protocol for communication between neighbourhood nodes. The efficient routing protocols can provide significant benefits to mobile ad hoc networks in terms of both performance and reliability. Some analyzes have been reported in the literature, evaluating the performance of routing protocols under various scenarios. This study focuses on the performance of MANET routing protocols under high traffic conditions. In this work, new applications will be designed to generate Constant Bit Rate (CBR) under heavy data load and high data traffic in the networks. All the research will be carried out by using a Discrete Event Simulator called OPNET.








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