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ABSTRACT:
A Mobile Adhoc Network (MANET) is a collection of wireless mobile nodes dynamically forming a network topology without the use of any existing network infrastructure or centralized administration. In this paper we investigated the performance of TCP and CBR traffic source using AOMDV routing protocol of MANET. Simulation is performed on the bases of average end to end delay, packet delivery ratio and number of packet dropped. We have analyzed the performance through Network Simulator NS-2.
KEY WORDS: MANET, AOMDV Routing Protocol, TCP, CBR.
I. INTRODUCTION:
Mobile Ad-hoc Network (MANET) [1] is a multi-hop temporary autonomous system which consists of a set of mobile nodes with wireless transceiver devices. It is used to meet the demand of emergency communications and military mobile communications, such as expeditionary operations, advance on the battlefield and rescue after earthquake or flood, etc.[2] In a MANET, no such infrastructure exists and the network topology may dynamically change in an unpredictable manner since nodes are free to move. As for the mode of operation, ad hoc networks are basically peer-to-peer multi-hop mobile wireless networks where information packets are transmitted in a store-and-forward manner from a source to an arbitrary destination, via intermediate nodes Mobile ad hoc networks (MANETs) are a rapidly evolving telecommunications technology. Their popularity is connected with their easy deployment and fast configuration. These features make them ideal for average users, Internet service providers, and reacting to emergency situations in which normal communication is impossible [3]. Traditional routing protocols [4, 5, 6] are proactive and they maintain routes to all nodes. Alternative reactive routing protocols [7, 8, 9] determine the route when they explicitly need to route packets.
The scope of this paper is to evaluate and compare the performance of CBR and TCP Traffic model using AOMDV routing protocol by varying pause time in MANET using NS-2 which is discrete event simulator.
II. AOMDV ROUTING PROTOCOL:
Ad-hoc On-demand Multi path Distance Vector Routing (AOMDV) protocol [10] is an extension to the AODV protocol for computing multiple loop-free and link disjoint paths. AOMDV shares several characteristics with AODV [11]. The routing entries for each destination contain a list of the next-hops along with the corresponding hop counts. All the next hops have the same sequence number. This...