5GService-GuaranteedNetworkSlicingWhitePaperIssueV1Date2017-02-28ChinaMobileCommunicationsCorporation,HuaweiTechnologiesCo.,Ltd.,DeutscheTelekomAG，VolkswagenAbstractPreviousgenerationsofmobilenetworksenabledvoice,data,video,andotherlife-changingservices.Incomparison,5GwillchangeoursocietybyopeningupthetelecomecosystemtoverticalindustriesGwillhelpverticalindustriestoachievethe“InternetofEverything”visionofubiquitouslyconnected,highlyreliable,ultra-lowlatencyservicesformassivenumberofdevices.Service-guaranteednetworkslicingintroducedinthiswhitepaperisoneoftheessen-tialfeaturesfor5Gtoachievethisvision.Keyplayersfromoperators,vendors,andverticalindustrieshavecometogethertoestablishacommonunderstandingonservice-guaranteednetworkslicingintermsofthevision,end-toend(E2E)solution,keyenablingtechnologies,andtheimpactsforverticalindustries.Thiswhitepaperdescribesthethinkingonnetworkslicingin5G.Previousgenerationsofmobilenetworksenabledvoice,data,video,andotherlife-changingservices.Incomparison,5GwillchangeoursocietybyopeningupthetelecomecosystemtoverticalindustriesGwillhelpverticalindustriestoachievethe“InternetofEverything”visionofubiquitouslyconnected,highlyreliable,ultra-lowlatencyservicesformassivenumberofdevices.Service-guaranteednetworkslicingintroducedinthiswhitepaperisoneoftheessentialfeaturesfor5Gtoachievethisvision.Keyplayersfromoperators,vendors,andverticalindustrieshavecometogethertoestablishacommonunderstandingonservice-guaranteednetworkslicingintermsofthevision,end-toend(E2E)solution,keyenablingtechnologies,andtheimpactsforverticalindustries.Thiswhitepaperdescribesthethinkingonnetworkslicingin5G.TableofContents1.IndustryTrendsandRequirements2.VisionsofService-GuaranteedNetworkSlicing3.OverallArchitectureofService-guaranteedNetworkSlicing3Concepts3ConceptClarifications3Architecture4.KeyTechnologiestoEnableService-GuaranteedNetworkSlicing4NetworkManagementSystem4NetworkSliceManagement(NSM)Architecture4NetworkCapabilityExposureviaBusinessSupportSystem4Third-partyApplications4Security4InfrastructureSecurity4NetworkManagementSecurity4NSISecurity4EnablingTechnologiesforDifferentTechnicalDomains4AccessNetwork4CoreNetwork4TransportNetwork4Terminal4TechnologyEvolution5.UseCaseforService-GuaranteedNetworkSlicing6.SummaryandSuggestions0204060606070909091011111111121212141517171820•Resourcemultiplexingandisolation•NewecosystemandbusinessmodelDifferentfromcurrenttelecompractice,verticalThe5Gnetworkswillsupportnewrolesandindustriesarelikelytogetinvolvedwithspecial-businessmodels,whichmayinvolvenetworkizednetworkfunctions(dedicatedrouting,infrastructureproviders,operators(mobilemobilitysupport,customizedflowhandling,networkoperators,mobilevirtualnetworkin-networkprocessing,etc.).Tohandlesuchoperators,etc.),andverticalserviceproviders.diversitywithoutlosingoperationefficiency,Thesenewrolesandbusinessrelationshipshelpoperatorsprefertouseresourcemultiplexingthetelecomindustrytobuildanewecosystemapproachwithsecuredisolationprovisioning.togetherwithverticalindustries.•Automation•ConvergenceoffixedandmobileaccessFlexibilityandscalabilityarethekeyfeaturesofFMCisalsoaveryimportantrequirement,the5Gnetworks.Suchnetworkscannotdependbecausecustomersdoexpectthesameuseronmanualmanagement.Fullyautomaticnetworkexperienceregardlessoftheaccesstechnologymanagementtechniques,suchasself-diagnosis,used.Whiletodaythearchitectures,serviceself-healing,automaticconfiguration,self-conceptsandecosystemsoffixedandmobileoptimization,andautoinstallation/plug-and-networksdifferinmanyaspects,itisenvisionedplay,arefundamentaltoachieveefficientthatwith5Gthesewillconverge.Anarchitecturenetworkoperationsandtoprovidethedynamicthatcannativelyhandleallkindsoffixedandservicemix.Withtheprogressoftheautomaticmobileaccesstechnologieswillcontributenetworkmanagementtechniques,managementsignificantlytoenablethedesigngoaloftrulywillbecomemoreagileandmoreadaptive.Newconverged5Gnetworks.toolsforsuchmanagementarerequired;inparticular,artificialintelligence(AI)andauto-maticlearningtechniquesshouldbeconsideredforthe5Gnetworks.IndustryTrendsandRequirementsThe5Gnetworksarenotonlyenvisionedasasupportfor“InternetofThings”(IoT),butalsoasmeanstogiverisetoanunprecedentedscaleofemergingindustries,instillinganinfinitevitalityinfuturetelecommunications.IoTrequiressupportforadiverserangeofservicetypes,suchaseHealth,InternetofVehicles(IoV),smarthouseholds,industrialcontrol,environmentmonitoring,andsoon.TheseserviceswilldrivetherapidgrowthofIoTandfacilitatehundredsofbillionsofdevicestoconnecttothenetwork,whichalsoconceivesthe“InternetofEverything”visionespeciallyfromverticalindustries.TherequirementsforIoTservicesarealsoverydiverse.Servicessuchassmarthouseholds,smartgrid,smartagriculture,andintelligentmeterreading,willrequiresupportinganextremelylargenumberofconnectionsandfrequentlytransmittedsmalldatapackets.Servicessuchassmartvehiclesandindustrialcontrolwillrequiremillisecond-levellatencyandnearly100%reliability,whileinfotainmentserviceswillrequireextremefix/mobilebroad-bandconnectivity.Theserequirementsindicatethatthe5Gnetworksneedbemoreflexibleandscalabletosupportmassiveconnectionsofdifferentnature.Meanwhile,operatorswillperformagradualshiftawayfrompipeservicestowardscopingwithverticalindustryneeds:•ServicediversityTheservicesforeseeninthe5Gerafallintothreetypicalscenarios:enhancedMobileBroadband(eMBB),Ultra-ReliableandLowLatencyCommu-nications(URLLC),andmassiveMachineTypeCommunications(mMTC).eMBBfocusesonservicescharacterizedbyhighdatarates,suchashighdefinition(HD)videos,virtualreality(VR),augmentedreality(AR),andfixedmobileconver-gence(FMC).URLLCfocusesonlatency-sensitiveservices,suchasself-driving,remotesurgery,ordronecontrol.mMTCfocusesonservicesthathavehighrequirementsforconnectiondensity,suchasthosetypicalforsmartcityandsmartagricultureusecases.Eachscenariorequiresacompletelydifferentnetworkserviceandposesrequirementsthatareradicallydifferent,some-timesevencontradictory.•GuaranteedperformanceSeveralkeyperformanceindicators(KPIs)mustbesimultaneouslysatisfiedforsomeoftheabove-mentionedservices.Forexample,VRandARhavestrictrequirementsondatarateaswellaslatency.Suchdemandsbecomemorestrin-gentforverticalindustries,wheretheterminalsarenormally"machines"withverylowtoleranceonperformancedegradation.•Fastdeploymentandshorttime-to-market(TTM)Itisalongprocesstodeployconventionalmobilenetworks.Asimpleserviceupdatemaytakefrom10to18months.SuchlongcyclesareverydifficulttomeettailoredandfastserviceprovisioningandshortTTMdemandsfromverticalindustries•ResourcemultiplexingandisolationDifferentfromcurrenttelecompractice,verticalindustriesarelikelytogetinvolvedwithspecial-izednetworkfunctions(dedicatedrouting,mobilitysupport,customizedflowhandling,in-networkprocessing,etc.).Tohandlesuchdiversitywithoutlosingoperationefficiency,operatorsprefertouseresourcemultiplexingapproachwithsecuredisolationprovisioning.•NewecosystemandbusinessmodelThe5Gnetworkswillsupportnewrolesandbusinessmodels,whichmayinvolvenetworkinfrastructureproviders,operators(mobilenetworkoperators,mobilevirtualnetworkoperators,etc.),andverticalserviceproviders.Thesenewrolesandbusinessrelationshipshelpthetelecomindustrytobuildanewecosystemtogetherwithverticalindustries.•AutomationFlexibilityandscalabilityarethekeyfeaturesofthe5Gnetworks.Suchnetworkscannotdependonmanualmanagement.Fullyautomaticnetworkmanagementtechniques,suchasself-diagnosis,self-healing,automaticconfiguration,self-optimization,andautoinstallation/plug-and-play,arefundamentaltoachieveefficientnetworkoperationsandtoprovidethedynamicservicemix.Withtheprogressoftheautomaticnetworkmanagementtechniques,managementwillbecomemoreagileandmoreadaptive.Newtoolsforsuchmanagementarerequired;inparticular,artificialintelligence(AI)andauto-maticlearningtechniquesshouldbeconsideredforthe5Gnetworks.•ConvergenceoffixedandmobileaccessFMCisalsoaveryimportantrequirement,becausecustomersdoexpectthesameuserexperienceregardlessoftheaccesstechnologyused.Whiletodaythearchitectures,serviceconceptsandecosystemsoffixedandmobilenetworksdifferinmanyaspects,itisenvisionedthatwith5Gthesewillconverge.Anarchitecturethatcannativelyhandleallkindsoffixedandmobileaccesstechnologieswillcontributesignificantlytoenablethedesigngoaloftrulyconverged5Gnetworks•Servicediversity•GuaranteedperformanceTheservicesforeseeninthe5GerafallintothreeSeveralkeyperformanceindicators(KPIs)musttypicalscenarios:enhancedMobileBroadbandbesimultaneouslysatisfiedforsomeofthe(eMBB),Ultra-ReliableandLowLatencyCommu-above-mentionedservices.Forexample,VRandnications(URLLC),andmassiveMachineTypeARhavestrictrequirementsondatarateaswellCommunications(mMTC).eMBBfocusesonaslatency.Suchdemandsbecomemorestrin-servicescharacterizedbyhighdatarates,suchasgentforverticalindustries,wheretheterminalshighdefinition(HD)videos,virtualreality(VR),arenormally"machines"withverylowtoleranceaugmentedreality(AR),andfixedmobileconver-onperformancedegradation.gence(FMC).URLLCfocusesonlatency-sensitiveservices,suchasself-driving,remotesurgery,or•Fastdeploymentandshorttime-to-dronecontrol.mMTCfocusesonservicesthatmarket(TTM)havehighrequirementsforconnectiondensity,Itisalongprocesstodeployconventionalmobilesuchasthosetypicalforsmartcityandsmartnetworks.Asimpleserviceupdatemaytakefrom10agricultureusecases.Eachscenariorequiresato18months.Suchlongcyclesareverydifficulttocompletelydifferentnetworkserviceandposesmeettailoredandfastserviceprovisioningandrequirementsthatareradicallydifferent,some-shortTTMdemandsfromverticalindustries.timesevencontradictory.
