A framework for energy efficient wireless sensor network
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Abstract
WirelessSensornetworkconsistsoflargenumberofwirelesscapablesensornodesthataredeployedinaregiontocollectthedatafromphysicalenvironmentAkeychallengeofwirelesssensornetworkisthattheirsensornodescontainlessamountofbatterypowerConsequentlyefficientutilizationofbatterypowerinsidethenetworkisamainissuetodevelopanefficientwirelesssensornetworkCoveragebydeploymentofsensornodesinefficientmannertaskallocationandroutingamongthesensornodesclusteringandsecuritymustbefocusedtoachieveanenergyefficientwirelesssensornetworkThesensornodesinsidetheregionaredeployedintwomannerseitherrandomordeterministicrandomdeploymentissuitablefortheapplicationswherethedetailsofregionisnotknownorregionisinaccessibleforexamplebattlefieldandthedeterministicdeploymentisperformedwherethedetailsofregionisknownaprioriforexamplecitysurveillancesystemInrandomdeploymentthelifetimeofthenetworkcanbeincreasedthroughtheefficientdeploymentofsensornodesbutindeterministicdeploymentthelifetimecanbeimprovedbyefficientdeploymentandschedulingInpresentworktwomethodsaregiventoachievetheenergyefficiencyoneappliedinrandomdeploymentandanotherindeterministicdeploymentFirstmethodgivesananalyticalmethodtomaintainthedisjointgroupofsensornodesforachievingtheimprovementinthelifetimeThemethodisabletogetthemaximumcoverageandlifetimebyutilizingindividualgroupatatimeThetessellationformsafterplacingagroupofsensornodeisregularrectangleThemethodachievesmorethan2ximprovementsinthelifetimeofthewirelesssensornetworkSecondmethodworksintwofoldsInthefirstfoldonthebasisofmathematicallycalculatedupperboundofthelifetimeitcalculatestheoptimizeddeploymentlocationsofsensornodesbyapplyingSimulatedAnnealingandParticleSwarmOptimizationalgorithmsandinnextfolditappliestheSimulatedAnnealingandDempsterShaferTheorytofindtheefficientscheduleofsensornodesThemethodisabletoachievethegoalofdeploymentandschedulingThetaskallocationplaysamajorroleingettingtheenergyefficiencyandlifetimeimprovementThetaskamongthesensornodescanbeallocatedintwomannerseitherincentralizedorindistributedDuetonatureofdistributedallocatio