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1、WashingtonUniversityinSt.LouisWashingtonUniversityOpenScholarshipAllComputerScienceandEngineeringResearchComputerScienceandEngineeringReportNumber:WUCSE-2015-0042015-09-29MaximizingNetworkLifetimeofWirelessSensor-ActuatorNetworksunderGraphRoutingAuthors:Chengj
2、ieWu,DolvaraGunatilaka,AbusayeedSaifullah,MoSha,ParasTiwari,ChenyangLu,andYixinChenProcessindustriesareadoptingwirelesssensor-actuatornetworks(WSANs)asthecommunicationinfrastructure.Thedynamicsofindustrialenvironmentsandstringentreliabilityrequirementsnecessit
3、atehighdegreesoffaulttoleranceinrouting.WirelessHARTisanopenindustrialstandardforWSANsthathaveseenworld-widedeployments.WirelessHARTemploysgraphroutingschemestoachievenetworkreliabilitythroughmultiplepaths.Sincemanyindustrialdevicesoperateonbatteriesinharshenv
4、ironmentswherechangingbatteriesareprohibitivelylabor-intensive,WSANsneedtoachievelongnetworklifetime.Tomeetindustrialdemandforlong-termreliablecommunication,thispaperstudiestheproblemofmaximizingnetworklifetimeforWSANsundergraphrouting.Weformulatethenetworklif
5、etimemaximizationproblemforWirelessHARTnetworksundergraphrouting.Then,weproposetheoptimalalgorithmandtwomoreefficientalgorithmstoprolongthenetworklifetimeofWSANs.Experimentsinaphysicaltestbedandsimulationsshowourlinearprogrammingrelaxationandgreedyheuristicsca
6、nimprovethenetworklifetimebyupto50%whilepreservingthereliabilitybenefitsofgraphrouting....Readcompleteabstractonpage2.Followthisandadditionalworksat:http://openscholarship.wustl.edu/cse_researchPartoftheComputerEngineeringCommons,andtheComputerSciencesCommonsR
7、ecommendedCitationWu,Chengjie;Gunatilaka,Dolvara;Saifullah,Abusayeed;Sha,Mo;Tiwari,Paras;Lu,Chenyang;andChen,Yixin,"MaximizingNetworkLifetimeofWirelessSensor-ActuatorNetworksunderGraphRouting"ReportNumber:WUCSE-2015-004(2015).AllComputerScienceandEngineeringRe
8、search.http://openscholarship.wustl.edu/cse_research/508DepartmentofComputerScience&Engineering-WashingtonUniversityinSt.LouisCampusBox1045-St.Louis,MO-63130-ph:(314)935-6160.Maxim
