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ENERGY EFFICIENT CLUSTERING AND FAULT TOLERANCE IN MOBILE ADHOC NETWORKS

Shodhganga@INFLIBNET

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Title ENERGY EFFICIENT CLUSTERING AND FAULT TOLERANCE IN MOBILE ADHOC NETWORKS
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Contributor Dr. A. Vincent Jeyakumar
 
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Description Mobile ad hoc networks (MANET) technology is used for communications during emergency
newlinesituations like disaster management and military deployment, which don t have any fixed
newlineinfrastructure.This has drawn much attention for research, due to its adhoc nature. The
newlineinfrastructure based cellular architecture sets up base stations to support the node mobility. Thus,
newlinemapping the concepts of base stations into MANET could meet its challenges like limited battery
newlinepower, scalability, available band width etc. This leads to the design of logical clusters, where
newlinethe cluster heads in every cluster play the role of base station. The cluster heads also form the
newlinevirtual back bone for routing the packets in the network. As MANET is very much used for
newlineemergency communication, this network should meet with this challenges and it must tolerate
newlinethe faults occurred due to node death and link failure. In this thesis, simulation based survey has
newlinebeen made to study the strengths and weaknesses of existing algorithms that motivated for the
newlinedesign of energy efficient clustering in MANET.
newlineNeighbour Detection Protocol (NDP) has been designed to help the nodes to probe their
newlineimmediate neighbours. In this protocol, every node broadcasts its own information to the
newlinenetwork, so that it is received by a node that lies within its transmission range. The receiver
newlinesenses its neighbours and updates its neighbour table (NTAB) from time to time.
newlineEnergy Efficient Clustering for Fault Tolerance (EECFT) algorithm has been proposed in
newlinethis work , that uses the node mobility and its available battery power for calculating the node
newlineweights. A node having the highest weight among its immediate neighbours declares itself as the
newlineprimary cluster head. As the current head consumes its battery power beyond a threshold,
newlinesecondary cluster heads are selected locally. The algorithm aims to utilize the battery power in a
newlinefairly distributed manner so that the total network life time is enhanced with reduced cluster
newlinemaintenance overhead.
newlineDuring the process of clustering, some isolated heads without having any members are
newlineformed. This increases the delay in communication as the number of hops in the routing back
newlinebone is increased. In this work Modification of Transmission Range in Isolated nodes (MTRI) has
newlinebeen proposed, that allows the isolated nodes to adjust their ranges to maintain connectivity with
newlineexisting cluster heads. The results show that, MTRI reduces the delay in communication by
newlinereducing the number of cluster heads in the network.
newlineA local repair algorithm is proposed with the aim of providing fault-tolerance a critical
newlinefeature in providing QoS in the link failure prone environment of mobile networks. Performance
newlineof this new fault-tolerant cluster based QoS wireless algorithm is evaluated according to failure
newlinerecovery time, dropped packets, throughput via simulations involving various node failure
newlinescenarios along QoS paths.
newlineEach of the proposed work is evaluated separately to analyze their performances and
newlinecompared with the competent results.
newline
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Date 2017-07-24T09:26:03Z
2017-07-24T09:26:03Z
14-10-2009
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24-2-2016
 
Type Ph.D.
 
Identifier http://hdl.handle.net/10603/160942
 
Language English
 
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Rights university
 
Format —
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CD
 
Coverage —
 
Publisher Thanjavur
Periyar Maniammai University
Department of Computer Science and Engineering
 
Source University