QualityofService(QoS)in3GPP1.UMTSQoSArchitecture2.UMTSQoSManagement3.UMTSQoSClasses4.QoSAttributes(QoSProfile)5.ManagementofEnd-to-EndIPQoS1.UMTSQoSArchitecture3GPPTS23.107defines3GPPQoSarchitecturewiththefollowingmajorQoSprinciplesQoShastobeprovidedend-to-endtheQoSattributesareneededtosupportasymmetricbearersthenumberofuser-definedandcontrolledattributesshouldbeassmallaspossiblethederivationanddefinitionofQoSattributesfromtheapplicationrequirementshavetobesimpleitshouldbeabletoprovidedifferentlevelsofQoSusingUMTS-specificcontrolmechanismsthatarenotrelatedtoQoSmechanismsintheexternalnetworkstheQoSmechanismshavetoallowefficientuseofradiocapacityandefficientresourceutilizationitshouldallowindependentevolutionofcoreandaccessnetworkstheUMTSnetworkshouldbeevolvedwithminimizedimpactontheevolutionoftransporttechnologiesinthewirelinenetworkstheUMTSQoScontrolmechanismsshallbeabletoefficientlyinterworkwithcurrentQoSschemestheoverheadandadditionalcomplexitycausedbytheQoSschemeshouldbekeptreasonablylow,soastheamountofstateinformationtransmittedandstoredinthenetworktheQoSbehaviorshouldbedynamic,i.e.,itshouldbepossibletomodifyQoSattributesduringanactivesessionUMTSQoSArchitectureQoSfunctionsaredividedintodifferentlayersEachbearerserviceprovidesitsQoSservicesbyutilizingtheservicesfurnishedbylowerlayer(s)End-to-endQoSTerminalEquipment(TE)toMobileTerminal(MT)LocalBearerServiceUMTSBearerServiceExternalBearerServiceUMTSBearerServiceRadioAccessBearerServiceprovidesconfidentialtransportofsignalinganduserdatabetweenMTandCNIuEdgeNodeCoreNetwork(CN)BearerServiceconnectstheUMTSCNIuEdgeNodewiththeCNGatewaytotheexternalnetworkshouldefficientlycontrolandutilizethebackbonenetworkinordertoprovidethecontractedUMTSBearerServicethepacketcorenetworkshouldsupportdifferentbackbonebearerservicesforavarietyofQoS2.UMTSQoSManagementManagementoftheUMTSBearerServiceincludesmanagementfunctionsincontrolplaneanduserplaneManagementfunctionsseektoensurethenegotiatedQoSbetweenUMTSBearerServiceandexternalservices,includingTE/MTLocalBearerServiceandExternalBearerServiceEnd-to-endQoSisachievedbytranslationandmappingoftheQoSrequirementsandQoSattributesbetweentheUMTSBearerServiceandexternalservicesUMTSQoSmanagementincontrolplaneControlPlaneFourmajorfunctionalblocksincontrolplaneBearerServiceManager功用主要功能是協調控制信號以建立,修改,並且維持所要求的QoS品質服務每個BSmanager都是一個包含著多個物件管理者(componentmanagers)的組合體,而這些物件管理者(componentmanagers)各自管理自己所屬功能,例如,UMTS,radio,Iu,andCNBSmanager另一些BSmanager負責QoS品質服務參數數值的轉換在提供QoS品質服務前,每個BSmanager可能會與admissioncontrolentity相互溝通。溝通的目的在於判斷使用者所要求的頻寬資源是否可獲得分類UMTSBearerService(BS)ManagerRadioAccessBearer(RAB)ManagerLocalBearerService(BS)ManagerRadioBearerService(BS)ManagerTranslationFunction將外部的信號轉換成內部的信號,並且將它們轉送至下一層的BSmanagement,其中還包含了傳輸相關參數屬性的轉換Admission/CapabilityControl維持有關頻寬資源的獲得及配置的相關資訊,並在當使用者提出頻寬保留要求時,決定是否給予頻寬資源的保留配置在CNEDGE中的admissioncontrolmodel主要是負責對使用者所提出的PDPcontext和QoS參數值做最後的接受或拒絕的決定SubscriptionControl讓CNEDGE的BSmanager透過它來做確認,以決定是否有使用網路QoS...