48013109-Performance-Evaluation-of-On-Demand-Routing-Protocols-AODV-and-Modified-AODV-R-AODV-in-MANE

48013109-Performance-Evaluation-of-On-Demand-Routing-Protocols-AODV-and-Modified-AODV-R-AODV-in-MANE

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International Journal of Distributed and Parallel Systems (IJDPS) Vol.2, No.1, January 2011 DOI : 10.5121/ijdps.2011.2108 94 Performance Evaluation of On Demand Routing Protocols AODV and Modified AODV (R-AODV) in MANETS Humaira Nishat 1 , Vamsi Krishna K 2 , Dr. D.Srinivasa Rao 3 and Shakeel Ahmed 4 1 Department of Electronics and Communication Engineering, CVR College of Engineering, Hyderabad, India. huma_nisha@yahoo.com 2 Department of Electronics and Communication Engineering, Jawaharlal Nehru Technological University, Hyderabad, India. vamsikrishnagreat@gmail.com 3 Department of Electronics and Communication Engineering, Jawaharlal Nehru Technological University, Hyderabad, India. dsraoece@jntuh.ac.in 4 Department of Electronics and Communication Engineering, Azad College of Engineering and Technology, Hyderabad, India. shakeel_be@yahoo.com ABSTRACT In mobile ad hoc networks, there is no centralized infrastructure to monitor or allocate the resources used by the mobile nodes. The absence of any central coordinator makes the routing a complex one compared to cellular networks. The Ad hoc On Demand Distance Vector (AODV) routing algorithm is a routing protocol designed for ad hoc mobile devices. AODV uses an on demand approach for finding routes. AODV and most of the on demand ad hoc routing protocols use single route reply along the reverse path. Due to rapid changes of topology the route reply may not arrive to the source node resulting in sending several route request messages and degrading the performance of the routing protocol. The extended AODV called Reverse Ad Hoc On Demand Vector (R-AODV) protocol uses a reverse route discovery mechanism and performs well when link breakage is frequent. In this paper we compare the QoS parameters such as Throughput, Delay and Packet Delivery ratio of both traditional AODV and R-AODV using TCP New Reno as the traffic source. Simulation results show that R-AODV performs well when link breakage is frequent. Keywords AODV, R-AODV, MANETs, QoS 1. INTRODUCTION Mobile ad hoc network [1], [2] is a dynamic network which allows communication between the mobile nodes without a central administrator. The network topology in such a network may keep changing randomly. Routing protocols used in traditional wired networks cannot be directly applied in ad hoc wireless networks due to their highly dynamic topology. A variety of routing protocols [7], [8] for ad hoc wireless networks have been proposed in the recent past. Ad hoc wireless network routing protocols [7], [8] can be classified into three major categories based on the routing information update mechanism.
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International Journal of Distributed and Parallel Systems (IJDPS) Vol.2, No.1, January 2011 95 1. Proactive or table driven routing protocols : In this, each node maintains the network topology information in the form of routing tables by periodically exchanging routing information. Routing information is generally flooded in the whole network. Whenever a node
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This note was uploaded on 05/12/2011 for the course COMP it-441 taught by Professor Mohitdua during the Spring '11 term at National Institute of Technology, Calicut.

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48013109-Performance-Evaluation-of-On-Demand-Routing-Protocols-AODV-and-Modified-AODV-R-AODV-in-MANE

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