ISSN (Online) 2278-1021 ISSN (Print) 2319 5940 International Journal of Advanced Research in Computer and Communication Engineering Vol. 4, Issue 9, September 2015 Copyright to IJARCCE DOI 10.17148/IJARCCE.2015.49100 456 Performance Analysis of Optimize AODV and AODV Routing Protocol Amrapali Arya 1 , B.P. Chaurasia 2 , S.K. Gupta 3 PG Scholar, Dept. of CSE, KNIT, Sultanpur, India 1 Associate Prof., Dept. of CSE, KNIT, Sultanpur, India 2 Associate Prof., Dept of CSE, BIET, Jhansi, India 3 Abstract: An Ad-hoc mobile network is a collection of wireless mobile hosts forming a temporary network without the aid of any established infrastructure or centralized administration hence lacking of permanent source of energy. To fulfill the energy requirement independent mobile devices are entirely dependent on battery power. One of the most widely used reactive protocols is AODV. In AODV there is two phases called route discovery and route maintenance. In the conventional AODV routing protocol, in the route Discovery phase, source node forward the route request message (RREQ) to find out path to the destination node. The intermediate nodes having less lifetime or energy also forward RREQ but after expiring their lifetime they are unable to send route reply message which results unnecessary RREQ rebroadcast, less packet delivery ratio (PDR) as well as throughput & more end to end delay. Solution to above problem is given in this paper, in optimize-AODV routing protocol the node does not forward RREQ unless there is sufficient energy (battery lifetime), and until the node density in its surrounding exceeds a particular threshold. The Result obtained using the network simulator NS-2 demonstrates how little changes in the principle of the AODV protocol can completely balance utilization among mobile devices of the network which increases the packet delivery ratio as well as increase the throughput. Keywords: Mobile Network, AODV, Energy Efficient routing protocol, battery lifetime, QoS. I. INTRODUCTION A mobile Ad-hoc Network (MANET) is a kind of infrastructure less wireless ad-hoc network, and is the collection of mobile nodes where the nodes will self- configure and self-optimize themselves of mobile routers connected by wireless links. In infrastructure less wireless networks, there is no need to use a base station each node acts as a router. These routers are free to move randomly and organize themselves arbitrarily; thus the network’s topology may change rapidly and unpredictably. Such a network may operate in a standalone fashion, or may be connected to the larger internet. It is also expected to play an important role in civilian forums such as campus recreation; conferences, electronic classrooms, military; earthquake etc. due to mobility of nodes, the topology of the network may changes hence conventional protocol for wired network is not suited for ad hoc networks. There is need to design new protocol to work in wireless medium. MANET routing protocols could be generally classified into two main categories based on the routing information update methods. Proactive Protocol are called table driven routing protocols in which, all the route information is maintained in routing table. The packets are transferred over the network in the manner of specified and predefined route in the routing table. In this method, the packets forwarding is done faster but the routing overhead is greater because all the routes have to be defined before transmitting the data and control packets. Reactive Routing Protocol are based on a number of sort of query-reply dialog. In this protocol network maintain only the route that is currently in use at any time. This type of protocol is also called on demand routing protocol where the routes are not before defined for routing. MANET is becoming popular because of simple deployment and less cost of IEEE802.11 standard. Mobile node can be PDA (personal digital assistant), laptops, digital camera, mobile phones etc. which operate on finite and decreasing battery life. Therefore these node need to be energy conserved to maximize the battery life. Reactive protocol has gained more significance as they decrease routing overhead and use less energy. AODV is a reactive routing protocol which usually use in Mobile ad-hoc networks. 2. RELATED WORKS In 1996, David Johnson and David Maltz [1] proposed DSR which is a reactive routing protocol. Unlike DSDV, DSR starts path finding process only when there is a demand. Source routes are carried out in each data packet. Two mechanisms are involved i.e. route discovery and maintenance. In the early 2000s, researchers focused on the development of basic functions or services of the AODV protocol, such as shared channel, route discovery, and dynamic nodes. The purpose of their studies was to manage an ad hoc network topology that always change and answer the problem of disconnected route (route error) caused by the level of mobility [2]. In 2001, C. E. Perkins, E. M. Royer and S. Das [3] proposed Ad hoc On Demand Distance Vector (AODV) routing protocol which functions similar to DSR protocol.