云计算与物联网外文翻译文献.docx
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云计算与物联网外文翻译文献.docx
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文献信息:
文献标题:
IntegrationofCloudComputingwithInternetofThings:
ChallengesandOpenIssues(云计算与物联网的集成:
挑战与开放问题)
国外作者:
HFAtlam等人
文献出处:
《IEEEInternationalConferenceonInternetofThings》,2017
字数统计:
英文4176单词,23870字符;中文7457汉字
外文文献:
IntegrationofCloudComputingwithInternetofThings:
ChallengesandOpenIssues
Abstract TheInternetofThings(IoT)isbecomingthenextInternet-related
revolution.Itallowsbillionsofdevicestobeconnectedandcommunicatewitheachothertoshareinformationthatimprovesthequalityofourdailylives.Ontheotherhand,CloudComputingprovideson-demand,convenientandscalablenetworkaccesswhichmakesitpossibletosharecomputingresources;indeed,this,inturn,enablesdynamicdataintegrationfromvariousdatasources.TherearemanyissuesstandinginthewayofthesuccessfulimplementationofbothCloudandIoT.TheintegrationofCloudComputingwiththeIoTisthemosteffectivewayonwhichtoovercometheseissues.ThevastnumberofresourcesavailableontheCloudcanbeextremelybeneficialfortheIoT,whiletheCloudcangainmorepublicitytoimproveitslimitationswithrealworldobjectsinamoredynamicanddistributedmanner.ThispaperprovidesanoverviewoftheintegrationoftheCloudintotheIoTbyhighlightingtheintegrationbenefitsandimplementationchallenges.DiscussionwillalsofocusonthearchitectureoftheresultantCloud-basedIoTparadigmanditsnewapplicationsscenarios.Finally,openissuesandfutureresearchdirectionsarealsosuggested.
Keywords:
CloudComputing,InternetofThings,CloudbasedIoT,Integration.
I.INTRODUCTION
Itisimportanttoexplorethecommonfeaturesofthetechnologiesinvolvedinthefieldofcomputing.Indeed,thisiscertainlythecasewithCloudComputingandtheInternetofThings(IoT)–twoparadigmswhichsharemanycommonfeatures.Theintegrationofthesenumerousconceptsmayfacilitateandimprovethesetechnologies.Cloudcomputinghasalteredthewayinwhichtechnologiescanbeaccessed,managedanddelivered.ItiswidelyagreedthatCloudcomputingcanbeusedforutilityservicesinthefuture.AlthoughmanyconsiderCloudcomputingtobeanewtechnology,ithas,inactualfact,beeninvolvedinandencompassedvarioustechnologiessuchasgrid,utilitycomputingvirtualisation,networkingandsoftwareservices.CloudcomputingprovidesserviceswhichmakeitpossibletosharecomputingresourcesacrosstheInternet.Assuch,itisnotsurprisingthattheoriginsofCloudtechnologieslieingrid,utilitycomputingvirtualisation,networkingandsoftwareservices,aswellasdistributedcomputing,andparallelcomputing.Ontheotherhand,theIoTcanbeconsideredbothadynamicandglobalnetworkedinfrastructurethatmanagesself-configuringobjects inahighlyintelligentway.TheIoTismovingtowardsaphasewhereallitemsarounduswillbeconnectedtotheInternetandwillhavetheabilitytointeractwithminimumhumaneffort.TheIoTnormallyincludesanumberofobjectswithlimitedstorageandcomputingcapacity.ItcouldwellbesaidthatCloudcomputingandtheIoTwillbethefutureoftheInternetandnext-generationtechnologies.However,Cloudservicesaredependentonserviceproviderswhichareextremelyinteroperable,whileIoTtechnologiesarebasedondiversityratherthaninteroperability.
ThispaperprovidesanoverviewoftheintegrationofCloudComputingintothe
IoT;thisinvolvesanexaminationofthebenefitsresultingfromtheintegrationprocessandtheimplementationchallengesencountered.Openissuesandresearchdirectionsarealsodiscussed.Theremainderofthepaperisorganisedasfollows:
SectionIIprovidesthebasicconceptsofCloudcomputing,IoT,andCloud-basedIoT;
SectionIIIdiscussesthebenefitsofintegratingtheIoTintotheCloud;Could-basedIoTArchitectureispresentedinsectionIV;SectionVillustratesdifferentCloud-basedIoTapplicationsscenarios.Followingthis,thechallengesfacingCloud-basedIoTintegrationandopenresearchdirectionsarediscussedinSectionVIandSectionVIIrespectively,beforeSectionVIIIconcludesthepaper.
II.BASICCONCEPTS
ThissectionreviewsthebasicconceptsofCloudComputing,theIoT,andCloud-basedIoT.
1.CloudComputing
ThereexistanumberofproposeddefinitionsforCloudcomputing,althoughthemostwidelyagreeduponseemsbethatputforthbytheNationalInstituteofStandardsandTechnology(NIST).Indeed,theNISThasdefinedCloudcomputingas"amodelforenablingubiquitous,convenient,on-demandnetworkaccesstoasharedpoolof configurable computingresources (e.g., networks,servers, storage,applications,andservices)thatcanberapidlyprovisionedandreleasedwithminimalmanagementeffortorserviceproviderinteraction".
Asstatedinthisdefinition,Cloudcomputingcomprisesfourtypesofdeploymentmodels,threedifferentservicemodels,andfiveessentialcharacteristics.
CloudcomputingdeploymentmodelsaremostcommonlyclassifiedasbelongingtothepublicCloud,whereresourcesaremadeavailabletoconsumersovertheInternet.PublicCloudsaregenerallyownedbyaprofitableorganisation(e.g.AmazonEC2).Conversely,theinfrastructureofaprivateCloudiscommonlyprovidedbyasingleorganisationtoservetheparticularpurposesofitsusers.TheprivateCloudoffersasecureenvironmentandahigherlevelofcontrol(MicrosoftPrivateCloud).
HybridCloudsareamixtureofprivateandpublicClouds.Thischoiceisprovidedforconsumersasitmakesitpossibletoovercomesomeofthelimitationsofeachmodel.Incontrast,acommunityCloudisaCloudinfrastructurewhichisdeliveredtoagroupofusersbyanumberoforganisationswhichsharethesameneed.
Inordertoallowconsumerstochoosetheservicethatsuitsthem,servicesin
Cloudcomputingareprovidedatthreedifferentlevels,namely:
theSoftwareasaService(SaaS)model,wheresoftwareisdeliveredthroughtheInternettousers(e.g.GoogleApps);thePlatformasaService(PaaS)model,whichoffersahigherlevelofintegratedenvironmentthatcanbuild,test,anddeployspecificsoftware(e.g.MicrosoftAzure);andfinally,withtheInfrastructureasaService(IaaS)model,infrastructuresuchasstorage,hardwareandserversaredeliveredasaservice(e.g.AmazonWebServices).
2.InternetofThings
TheIoTrepresentsamodernapproachwhereboundariesbetweenrealanddigitaldomainsareprogressivelyeliminatedbyconsistentlychangingeveryphysicaldevicetoasmartalternativereadytoprovidesmartservices.AllthingsintheIoT(smartdevices,sensors,etc.)havetheirownidentity.Theyarecombinedtoformthecommunicationnetworkandwillbecomeactivelyparticipatingobjects.Theseobjectsincludenotonlydailyusableelectronicdevices,but alsothingslikefood,clothing,materials,parts,andsubassemblies;commoditiesandluxuryitems;monumentsandlandmarks;andvariousformsofcommerceandculture.Inaddition,theseobjectsareabletocreaterequestsandaltertheirstates.Thus,allIoTdevicescanbemonitored,trackedandcounted,whichsignificantlydecreaseswaste,loss,andcost.
TheconceptoftheIoTwasfirstmentionedbyKevinAshtonin1999,whenhestatedthat“TheInternetofThingshasthepotentialtochangetheworld,justastheInternetdid.Maybeevenmoreso”.Later,theIoTwasformallypresentedbytheInternationalTelecommunicationUnion(ITU)in2005.A greatmanydefinitionsoftheIoThavebeenputforthbynumerousorganisationsandresearchers.AccordingtotheITU(2012),theIoTis“aglobalinfrastructurefortheInformationSociety,enablingadvancedservicesbyinterconnecting(physicalandvirtual)thingsbasedon,existingandevolving,interoperableinformationandcommunicationtechnologies”.TheIoTintroducesavarietyofopportunitiesandapplications.However,itfacesmanychallengeswhichcouldpotentiallyhinderitssuccessfulimplementation,suchasdatastorage,heterogeneousresource-constrained,scalability,Things,variablegeospatialdeployment,andenergyefficiency.
3.Cloud-BasedInternetofThings
TheIoTandCloudcomputingarebothrapidlydevelopingservices,andhavetheirownuniquecharacteristics.Ontheonehand,theIoTapproachisbasedonsmartdeviceswhichintercommunicateinaglobalnetworkanddynamicinfrastructure.Itenablesubiquitouscomputingscenarios.TheIoTistypicallycharacterisedbywidely-distributeddeviceswithlimitedprocessingcapabilitiesandstorage.Thesedevicesencounterissuesregardingperformance,reliability,privacy,andsecurity.Ontheotherhand,Cloudcomputingcomprisesamassivenetworkwithunlimitedstoragecapabilitiesandcomputationpower.Furthermore,itprovidesaflexible,robustenvironmentwhichallowsfordynamicdataintegrationfromvariousdatasources.CloudcomputinghaspartiallyresolvedmostoftheIoTissues. Indeed,theIoTandCloudaretwocomparativelychallengingtechnologies,andarebeingcombinedinordertochangethecurrentandfutureenvironmentofinternetworkingservices.
TheCloud-basedInternetofThingsisaplatformwhichallowsforthesmart
usageofapplications,information,andinfrastructureinacost-effectiveway.WhiletheIoTandCloudcomputingaredifferentfromeachother,theirfeaturesarealmostcomplementary,asshowninTABLE1.Thiscomplementarityistheprimaryreasonwhymanyresearchershaveproposedtheirintegration.
Items
IoT
CharacteristicsIoTispervasive(thingsareeverywhere).
Thesearerealworldobjects.
CloudComputing
Cloudisubiquitous(resourcesareavailablefromeverywhere).
Thesearevirtualresources.
ProcessingcapabilitiesStoragecapabilities
Connectivity
Bigdata
Lim
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