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Vol. 1 Issue II, September2013 ISSN: 2321-9653
I N T E R N A T I O N A L J O U R N A L F O R R E S E A R C H I N A P P L I E D S C I E N C E AN D E N G I N E E R I N G T E C H N O L O G Y (I J R A S E T)
A Review paper on Routing Protocol Comparison Ms. Aastha kohli 1, Mr. Sukhbir 2 1
M.Tech(CSE) (N.C College of Engineering, Israna Panipat)
2
HOD Computer Science Dept.( N.C College of Engineering, Israna Panipat)
ABSTRACT This paper presents a broad study on the work of common MANET (mobile adhoc network) routing protocols. The routing protocols used in this study include AODV, DSR and DSDV which consist of a mixture of reactive and proactive protocols. The paper is a survey of research on routing protocols for MANET. The paper has been made to compare three well know protocols AODV, DSR and DSDV by using three performance metrics packet delivery ratio, average end to end delay and routing overhead. The comparison has been done by using simulation tool NS2, NAM (Network Animator) and excel graph which is used for preparing the graphs from the trace files. Keywords: MANET, NS-2, AODV, DSDV, DSR 1.
INTRODUCTION
The routing protocol should be power-efficient.
Mobile ad hoc networks (MANETs) are freely selforganized networks without infrastructure support. In a mobile ad hoc network, nodes move readily. Because nodes in a MANET normally have low transmission ranges, some nodes cannot communicate directly with each other. Hence, routing paths in mobile ad hoc networks potentially contain multiple hops, and every node in mobile adhoc networks has the responsibility to act as a router. Mobile Ad-hoc networks are selfconfigured multihop wireless networks where, the structure of the network changes dynamically. This is mainly due to the mobility of the nodes [2]. Nodes in these networks utilize the same random access wireless channel, cooperating in a friendly manner to engaging themselves in multihop forwarding. The node in the network not only acts as hosts but also as routers that route data to/from other nodes in network [1]. Some examples include interaction of students during lecture, sharing of files by business associates in an airport terminal. The group of mobile hosts may form their ad hoc network, if every mobile host is equipped with wireless local area network interface.
The routing protocol should be secure.
A hybrid routing protocol should be more reactive than proactive to avoid overhead.
A routing protocol should qualify the Quality of Service (QoS)
Wireless ad-hoc networks have got a lot of importance in wireless communications. Wireless communication is established by nodes acting as routers and transferring packets from one to another in ad-hoc networks. Routing in these networks is more complicated due to moving nodes and hence many protocols have been developed. In this paper we have selected three main routing protocols.Figure1 below represents the scenario of MANET.
Routing protocols of MANET should have the following Properties:
A routing protocol should be assigned in manner in order to increase its reliability. A routing protocol must be designed considering unidirectional links because wireless medium may cause a wireless link to be opened in unidirectional only due to physical factors.
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Figure 1
Ad-hoc Network Architecture
2 Applications of MANET: MANETs are useful in places where no communication infrastructure or the infrastructure is damaged. Typical applications are: