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1、Sensors2008,8,1099-1110sensorsISSN1424-8220©2008byMDPIwww.mdpi.org/sensorsReviewQoSChallengesandOpportunitiesinWirelessSensor/ActuatorNetworks1,2FengXia1FacultyofInformationTechnology,QueenslandUniversityofTechnology,BrisbaneQLD4001,Australia2CollegeofComputerScienceandTechnology
2、,ZhejiangUniversity,Hangzhou310027,ChinaE-mail:f.xia@ieee.orgReceived:29December2007/Accepted:18February2008/Published:21February2008Abstract:Awirelesssensor/actuatornetwork(WSAN)isagroupofsensorsandactuatorsthataregeographicallydistributedandinterconnectedbywirelessnetworks.Sens
3、orsgatherinformationaboutthestateofphysicalworld.Actuatorsreacttothisinformationbyperformingappropriateactions.WSANsthusenablecybersystemstomonitorandmanipulatethebehaviorofthephysicalworld.WSANsaregrowingatatremendouspace,justliketheexplodingevolutionofInternet.Supportingquality
4、ofservice(QoS)willbeofcriticalimportanceforpervasiveWSANsthatserveasthenetworkinfrastructureofdiverseapplications.Tosparknewresearchanddevelopmentinterestsinthisfield,thispaperexaminesanddiscussestherequirements,criticalchallenges,andopenresearchissuesonQoSmanagementinWSANs.Abrie
5、foverviewofrecentprogressisgiven.Keywords:wirelesssensor/actuatornetwork,qualityofservice,service-orientedarchitecture,communicationprotocol,self-management,powermanagement.1.IntroductionWirelesssensornetworks(WSNs)[1,2]havebeenstudiedforabout10years.Todaythisfieldiswidelysupport
6、edbyanincreasingnumberofdedicatedjournalssuchasACMTrans.onSensorNetworksandInt.J.ofDistributedSensorNetworks,conferencessuchasSENSYS(ACMConf.onEmbeddedNetworkedSensorSystems),IPSN(ACM/IEEEInt.Conf.onInformationProcessinginSensors2008,81100SensorNetworks),andDCOSS(IEEEInt.Conf.onD
7、istributedComputinginSensorSystems),andcommercialcompaniessuchasCrossbow,Ember,Sentilla,DustNetworks,Microsoft,Intel,andSunMicrosystems,tomentionjustafew.Numerousspecialissuesofrenownedjournalsonsensornetworkshavebeenpublishedandspecialsessionsofleadingconferencesorganized,withmo
8、reexpectedtoappearinthefuture.Sinceitsin
