09-02-2013, 03:57 PM
PERFORMANCE ANALYSIS OF AODV ROUTING PROTOCOL IN MANETS
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Introduction
Wireless Communication is one of the emerging technologies which allow users to access information and
services electronically, despite their geographical position. Wireless communication can be classified as:
Infrastuctured network and Infrastructureless network. Mobile Adhoc network is a special kind of
infrastructureless network. It is a collection of mobile nodes that move randomly and dynamically [1]. Due to
the mobile nature of the nodes the network topology keeps on changing. Each node acts as a host and a router
forwarding and receiving packets from the other nodes in the network that may not be in the transmission range
of the network. The nodes in MANETs discover other nodes dynamically. Routing in such networks is a
challenging task due to the highly dynamic network topology. The aim of deploying these networks is to
provide communication in areas where limited or no connectivity or any communication infrastructure exists.
These networks are flexible and can be employed in military rescue operations, interactive lectures, business
sharing information and emergency situations [6].
The features of MANETs are highly dynamic topology, bandwidth constrained links, limited physical security
and energy constrained nodes. For providing connectivity a MANET uses multi-hop routing rather than a static
infrastructure based network. Many protocols have been proposed so far. One such protocol is Adhoc On
Demand Distance Vector (AODV) routing protocol.
AODV is preferred because it minimizes the routing overhead than the other protocols and hence enhancing
the performance of the network. In this paper, the performance analysis of AODV routing protocol is done on
the basis of few performance metric parameters such as average end-to-end delay, throughput and packet
delivery ratio. The simulation is done in MATLAB.
The paper is structured as follows: In Section 2, MANET routing protocols are discussed. In Section 3,
overview of AODV routing protocol is given. Section 4 describes the simulation of AODV routing protocol. In
Section 5, performance matrices parameters are presented and in Section 6, results and analysis are described.
Hybrid Routing Protocols
In this, various approaches of routing protocols are combined to form a single protocol. ZRP (Zone Routing
Protocol) is one of the hybrid protocols which are the combination of table-driven and on-demand routing
protocol. It has the characteristics of adaptive to network conditions [7].
Conclusions and Future Scope
In this paper, the analysis of simulation of AODV routing protocol is done using different performance
matrices. It is observed that AODV routing protocol performs with satisfactory results of packet delivery ratio
but on the cost of some delay and packet loss. The performance of AODV can be further enhanced using fuzzy
logic by taking different input parameters to reduce the uncertainty for finding an optimal path. This will
drastically reduce the packet loss and average end to end delay and thereby making an efficient AODV routing
protocol.