基于动态配置等价多路径技术的无线传感器网络负载均衡算法研究.pdf

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1、第28卷第5期传感技术学报V01．28No．52015年5月CHINESEJOURNALOFSENSORSANDACTUATORSMav2015DynamicConfigureEqualCostMulti-PathstoAchieveLoadBalanceinWirelessSensorNetworksWANGJing，WANGLili，YOUJinkuo，rANGTing(1．StateGridHenanElectricPowerCompany，EconomicResearchInstitute，Zhengzhou450052，China2．SchoolofElectricalEngine

2、eringandAutomation，TianjinUniversity，Tianjin300072，China)Abstract：WiththedevelopmentofInternetofThings(IoTs)，wirelesssensornetworks，astheinfrastructureofIoTs，shouldbearmoreandmorevarioustransmissionservices．Thenarrowwirelessbandwidthbecomesthefirstrestrictivefactors．Shuntingflowtoachieveloadbalance

3、istheeffectivewaytoimprovethebearingcapacityofcommunicationnetwork．ThispaperintegratedEqual-CostMulti—Paths(ECMP)techniqueandWSN’sself-organizedcharacteristics，inwhichtheself-organizedconnectionandmulti—hopstransmissionmodelofWSNprovidemorethanoneshortestpathsfromtrafficsourcetothedestinationsensor

4、node，andthenECMPcanequallyapportionedtrafficontheseavailablee—qualcostmulti-pathstostabilizehugetraffic．ItprovedthatthetraditionalECMPmode1．configuredallofnodeswithECMPfunction，willincreasetheoverheadexpenses，andevenmakeheaviertrafficloadinsomespecialeases．Tosolvetheseproblems，thispaperproposedthed

5、ynamicconfigurationECMPalgorithm—DC—ECMP．Inthealgorithm，itdefinedthetrafficvolumeconservationconstraintandthewirelesstransmittingbandwidthupperboundconstraint，madetheminimizingthemaximumlinkutilizationrateasobjectivefunction．andestablishthemulti．constraintoptimi—zationmode1．Usingthemaximumlinkutili

6、zationrateandnode’sdegreetocalculatethepriorityofconfigurationEC-MPfunction，eachnodecanbedynamicconfigurationandachievetheoptimalnetwork’stransmittingperformance．Inourevaluationwithsimulations．theperformanceofDC．ECMPismeasuredandcomparedwithPPValgorithms．Basedontheexperimentalresults，DC-ECMPoutperf

7、ormsexistingalgorithmsinreducethemaximumlinkutilizationrate，shortthetransmittinglatency9．9ms．andsavethenetworks’resourceconsumption4．06％．Keywords：wirelesssensornetworks；loadbalance；equalcostmulti-path；linku