VoWiFi-Handover-and-QoSPPT课件

VoWiFiHandoverandQoS,EversChen,Agenda,Handover1.MIP2.ApplicationLayerHandoverQoS,2,.,Application-BasedSwitching,1.DoesnotprovideIPpreservation2.RelyontheapplicationtosurvivetheIPaddresschangeorre-establishtheconnection,3,.,WiFiMobility,DSMIPHAistheanchorthatbindstheidentifier(HoA)withthelocator(CoA)PreservestheIPaddresswheneverthenetworkischanged.,4,.,DSMIP-basedWi-Fimobility,5,.,3GPPS5toTrustedNon-3GPPS2c(DSMIPv6)Handover,6,.,GatewayControlSessionEstablishmentduringAttach,7,.,GatewayControlandQoSRulesRequest,8,.,GatewayControlandQoSRulesProvision,9,.,IPCANSessionModification;GW(PCEF)initiated,10,.,3GPPIPAccesstoNon-3GPPIPaccessHandoveroverMIPv4-basedS2a,11,.,IPMS,1)HBM+DSMIPv6+S2c+CoA(Care-of-Address)+newipaddress,localtotheaccessnetwork2)HBM+MIPv4+FACoA+S2a3)NBM+PMIPv6+UEscapability(depended)S2a/S2b4)NBM+GTP+UEscapability(depended)S2b,12,.,Non-3GPPtoE-UTRANwithPMIPv6onS2aorS2bandGTPonS5/S8interfaces,13,.,3GPPAccesstoUntrustedNon-3GPPIPAccesswithPMIPv6onS2b,14,.,GTPandPMIPbasedS5/S8interface,15,.,DefaultBearerActivation,16,.,DedicatedBearerActivation,17,.,QoS,18,QoSandNetworkPerformance,QoSfeaturesstarttobeappliedtoapplicationperformanceastheloadonthenetworkincreases.QoSworkstokeeplatency,jitter,andlossforselectedtraffictypeswithinacceptableboundaries.,19,.,QOSOverviewfors2b,20,.,WMMFrameFormat,21,.,DistributedCoordinationFunctionExample,22,.,WMMQueues,23,.,802.11DCF,aCWminaCWmaxRetries,24,.,WMMandIEEE802.1PRelationship,25,.,AccessPointQoSTranslationValues,26,.,APistranslatingCoSvalues,WMMtoAVVIDPacketRe-MarkingforAPswhenAVVIDPriorityTypeConfigured,27,.,QOSTrafficSelector,28,.,QoSTrafficSelectorcont.,29,.,QosRequirements,30,.,VoWiFiS2bQoS,31,.,TheEPSbearerwithGTP-basedS5/S8for3GPPaccess,32,.,TheEPSBearerwithPMIP-basedS5/S8andE-UTRANaccess,33,.,AnEPSbearerisrealizedbythefollowingelements,IntheUE,theULTFTmapsatrafficflowaggregatetoanEPSbearerintheuplinkdirection;InthePDNGW,theDLTFTmapsatrafficflowaggregatetoanEPSbearerinthedownlinkdirection;AradiobearertransportsthepacketsofanEPSbearerbetweenaUEandaneNodeB.Ifaradiobearerexists,thereisaone-to-onemappingbetweenanEPSbearerandthisradiobearer;AnS1bearertransportsthepacketsofanEPSbearerbetweenaneNodeBandaServingGW;,34,.,AnEPSbearerisrealizedbythefollowingelementscont.1,AnE-RAB(E-UTRANRadioAccessBearer)referstotheconcatenationofanS1bearerandthecorrespondingradiobearer.AnS5/S8bearertransportsthepacketsofanEPSbearerbetweenaServingGWandaPDNGW;AUEstoresamappingbetweenanuplinkpacketfilterandaradiobearertocreatethemappingbetweenatrafficflowaggregateandaradiobearerintheuplink;,35,.,AnEPSbearerisrealizedbythefollowingelementscont.2,APDNGWstoresamappingbetweenadownlinkpacketfilterandanS5/S8bearertocreatethemappingbetweenatrafficflowaggregateandanS5/S8bearerinthedownlink;AneNodeBstoresaone-to-onemappingbetweenaradiobearerandanS1BearertocreatethemappingbetweenaradiobearerandanS1bearerinboththeuplinkanddownlink;,36,.,AnEPSbearerisrealizedbythefollowingelementscont.3,AServingGWstoresaone-to-onemappingbetweenanS1BearerandanS5/S8bearertocreatethemappingbetweenanS1bearerandanS5/S8bearerinboththeuplinkanddownlink.,37,.,BearerlevelQoSparameters,QoSClassIdentifier(QCI);5fordefault,1fordedicated.AllocationandRetentionPriority(ARP).TheprimarypurposeofARPistodecidewhetherabearerestablishment/modificationrequestcanbeacceptedorneedstoberejectedduetoresourcelimitations.GuaranteedBitRate(GBR);MaximumBitRate(MBR).perAPNAggregateMaximumBitRate(APN-AMBR).perUEAggregateMaximumBitRate(UE-AMBR).,38,.,ULTFT,TheUplinkTFTisestablishedbythePCRFandsenttotheUEinthecontextsetupmessages.DLfilteringisdoneintheP-GWanditsTFTisalsoestablishedinthePCRF.TheUEusestheTFTtomapuplinkpacketstotheappropriatebearers.However,theTFTitselfisdefinedbythePCRFandsenttotheP-GW,whichpassesitdownthroughtheS-GW,theMME,andtheeNBtogettotheUE.,39,.,Reference,WLANQualityofServ