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1、UnifiedAccessControl(通用接入控制)上周將NR重選的時(shí)候,在S舊2中定義了UAC當(dāng)時(shí)由于時(shí)間問(wèn)題,沒有展開來(lái)進(jìn)行解釋,所以考慮補(bǔ)充一個(gè)專題文檔。UAOUE接入控制或狀態(tài)改變的機(jī)制集合。在LTE中,我們就經(jīng)常會(huì)碰到需要接入控制的時(shí)候,比如某個(gè)小區(qū)超載了,大量UE接入到一個(gè)小區(qū),導(dǎo)致UE間相互干擾嚴(yán)重,無(wú)法成功解碼。在4G中,接入控制主要有兩種類型:UE初始接入請(qǐng)求的時(shí)候,網(wǎng)絡(luò)下發(fā)拒絕消息;自己阻止UE嘗試初始接入(也就是CellBar)Case1:SIB1配置bar,所有UE都不能接入,含緊急呼叫Case2:SIB2配備Bar,只針對(duì)特定服務(wù)特定的U或止接入在LTE中,接入控
2、制主要在RRC1進(jìn)行,1是,在NR中,不僅在RRC!進(jìn)行控制,還可以在NAS層進(jìn)行控制。具體如下:UACAlgorithmUSIMUSIMFactorsDescriptionRRC?uac-BarringInfoinSIB1?RRCState(Idle,Connected,Inactive)NAS?見下文USIM?EFUAC_AIC,EFACCUAC蛾:根據(jù)24.5014.5.1總結(jié)如下:TriggerDescription5GMM-IDLE-5GMM-CONNECTEDMO-MMTEL-voice-call-startedindicationMO-MMTEL-video-call-start
3、edindicationMO-SMSoIP-attempt-startedMOSMSoverNASULNASTRANSPORTmessageforPDUsessionestablishment(exceptforthepurposeofIDLE-CONNECTEDNASStatechange)ULNASTRANSPORTmessageforPDUsessionmodification(exceptforthepurposeofIDLE-CONNECTEDNASStatechange)Requesttore-establishtheuser-planeresourcesforanexisting
4、PDUsessionNotificationforanuplinkuserdatapackettobesentforaPDUsessionwithsuspendeduserplaneresourcesSIM卡信息相關(guān)的UACEFUAC_AIC(UACAccessIdentitiesConfiguration),31.102定義如下:b8b7b6b5b4b3b2b1b1=0:UEisnotconfiguredforMultimediaPriorityServiceintheHPLMN,EHPLMNoravisitedPLMNofthehomecountry.b1=1:UEisconfigured
5、forMultimediaPriorityServiceintheHPLMN,EHPLMNoravisitedPLMNofthehomecountry.b2=0:UEisnotconfiguredforMissionCriticalServicesintheHPLMN,EHPLMNoravisitedPLMNofthehomecountry.b2=1:UEisconfiguredforMissionCriticalServicesintheHPLMN,EHPLMNoravisitedPLMNofthehomecountry.RFUEFACC(AccessControlClass)Byte1:b
6、8b7b6b5b4b3b2b11514131211100908NumberoftheACC(exceptforbitb3)Byte2:NAS狀態(tài)改變服務(wù)請(qǐng)求(in5GMM-CONNECTED)b8b7b6b5b4b3b2bl1111II1110706050403020100NumberoftheACCIdentifier:6F78Structure:transparentMandatorySFI:06Filesize:2bytesUpdateactivity:lowAccessConditions:READPINUPDATEADMDEACTIVATEADMACTIVATEADMBytesDes
7、criptionM/OLength1to2AccesscontrolclassesM2bytes如何獲取接入標(biāo)識(shí)符?AccessidentitiesAccessIdentitynumberUEconfiguration0UEisnotconfiguredwithanyparametersfromthistable1(NOTE1)UEisconfiguredformultimediapriorityservice(MPS).2(NOTE2)UEisconfiguredformissioncriticalservice(MCS).3-10Reservedforfutureuse11(NOTE3)A
8、ccessClass11isconfiguredintheUE.12(NOTE3)AccessClass12isconfiguredintheUE.13(NOTE3)AccessClass13isconfiguredintheUE.14(NOTE3)AccessClass14isconfiguredintheUE.15(NOTE3)AccessClass15isconfiguredintheUE.NOTE1:Accessidentity1isvalidwhen:-theUSIMfileEFUAC_AICindicatestheUEisconfiguredforaccessidentity1an
9、dtheselectedPLMN,ifanewPLMNisselected,orRPLMNistheHPLMN(iftheEHPLMNlistisnotpresentorisempty)orEHPLMN(iftheEHPLMNlistispresent),oravisitedPLMNofthehomecountry(seethedefinitionofhomecountryin3GPPTS24.30115);or-theUEreceivesthe5GSnetworkfeaturesupportIEwiththeMPSindicatorbitsettoAccessidentity1validfr
10、omtheRPLMNasdescribedinsubclause5.5.1.2.4andsubclause5.5.1.3.4.NOTE2:Accessidentity2isusedbyUEsconfiguredforMCSandisvalidwhen:-theUSIMfileEFUAC_AICindicatestheUEisconfiguredforaccessidentity2andtheselectedPLMN,ifanewPLMNisselected,orRPLMNistheHPLMN(iftheEHPLMNlistisnotpresentorisempty)orEHPLMN(ifthe
11、EHPLMNlistispresent),oravisitedPLMNofthehomecountry(see3GPPTS23.1225);or-theUEreceivesthe5GSnetworkfeaturesupportIEwiththeMCSindicatorbitsettoAccessidentity2validfromtheRPLMNasdescribedinsubclause5.5.1.2.4andsubclause5.5.1.3.4.NOTE3:Accessidentities11and15arevalidinHPLMN(iftheEHPLMNlistisnotpresento
12、risempty)orEHPLMN(iftheEHPLMNlistispresent).AccessIdentities12,13and14arevalidinHPLMNandvisitedPLMNsofhomecountryonly(seethedefinitionofhomecountryin3GPPTS24.30115).那么,接入等級(jí)能夠提供哪些服務(wù)呢?MappingtableforaccesscategoriesRule#TypeofaccessattemptRequirementstobemetAccessCategory1ResponsetopagingorNOTIFICATIO
13、Novernon-3GPPaccess;5GMMconnectionmanagementprocedureinitiatedforthepurposeoftransportinganLPPmessagewithoutanongoing5GC-MO-LRprocedure;AccessattempttohandoverofongoingMMTELvoicecall,MMTELvideocallorSMSoIPfromnon-3GPPaccessAccessattemptisforMTaccess,orhandoverofongoingMMTELvoicecall,MMTELvideocallor
14、SMSoIPfromnon-3GPPaccess0(=MT_acc)2EmergencyUEisattemptingaccessforanemergencysession(NOTE1,NOTE2)2(=emergency)3Accessattemptforoperator-definedaccesscategoryUEstoresoperator-definedaccesscategorydefinitionsvalidinthecurrentPLMNasspecifiedinsubclause4.5.3,andaccessattemptismatchingcriteriaofanoperat
15、or-definedaccesscategorydefinition32-63(=basedonoperatorclassification)3.1AccessattemptforMOexceptiondataUEisinNB-N1modeandallowedtouseexceptiondatareporting(seetheExceptionDataReportingAllowedleafoftheNASconfigurationMOin3GPPTS24.36817ortheUSIMfileEFNASCONFIGin3GPPTS31.10222),andaccessattemptisforM
16、OdataorforMOsignallinginitiateduponreceivingarequestfromupperlayerstotransmituserdatarelatedtoanexceptionalevent.10(=MOexceptiondata)4Accessattemptfordelaytolerantservice(a)UEisconfiguredforNASsignallinglowpriorityorUEsupportingS1modeisconfiguredforEAB(seetheExtendedAccessBarringleafofNASconfigurati
17、onMOin3GPPTS24.36817or3GPPTS31.10222)whereEABoverridedoesnotapply,and(b):theUEreceivedoneofthecategoriesa,borcaspartoftheparametersforunifiedaccesscontrolinthebroadcastsysteminformation,andtheUEisamemberofthebroadcastedcategoryintheselectedPLMNorRPLMN/equivalentPLMN(NOTE3,NOTE5,NOTE6,NOTE7,NOTE8)1(=
18、delaytolerant)4.1MOIMSregistrationrelatedsignallingAccessattemptisforMOIMSregistrationrelatedsignalling(e.g.IMSinitialregistration,re-registration,subscriptionrefresh)orforNASsignallingconnectionrecoveryduringongoingprocedureforMOIMSregistrationrelatedsignalling(NOTE2a)9(=MOIMSregistrationrelatedsig
19、nalling)5MOMMTelvoicecallAccessattemptisforMOMMTelvoicecallorforNASsignallingconnectionrecoveryduringongoingMOMMTelvoicecall(NOTE2)4(=MOMMTelvoice)6MOMMTelvideocallAccessattemptisforMOMMTelvideocallorforNASsignallingconnectionrecoveryduringongoingMOMMTelvideocall(NOTE2)5(=MOMMTelvideo)7MOSMSoverNASo
20、rMOSMSoIPAccessattemptisforMOSMSoverNAS(NOTE4)orMOSMSoverSMSoIPtransferorforNASsignallingconnectionrecoveryduringongoingMOSMSorSMSoIPtransfer(NOTE2)6(=MOSMSandSMSoIP)8UENASinitiated5GMMspecificproceduresAccessattemptisforMOsignalling3(=MO_sig)8.1MobileoriginatedlocationrequestAccessattemptisformobil
21、eoriginatedlocationrequest(NOTE9)3(=MO_sig)8.2MobileoriginatedsignallingtransactiontowardsthePCFAccessattemptisformobileoriginatedsignallingtransactiontowardsthePCF(NOTE10)3(=MO_sig)9UENASinitiated5GMMconnectionmanagementprocedureor5GMMNAStransportprocedureAccessattemptisforMOdata7(=MO_data)10Anupli
22、nkuserdatapacketistobesentforaPDUsessionwithsuspendeduser-planeresourcesNofurtherrequirementistobemet7(=MO_data)NOTE1:Thisincludes5GMMspecificprocedureswhiletheserviceisongoingand5GMMconnectionmanagementproceduresrequiredtoestablishaPDUsessionwithrequesttype=initialemergencyrequestorexistingemergenc
23、yPDUsession,ortore-establishuser-planeresourcesforsuchaPDUsession.ThisfurtherincludestheservicerequestprocedureinitiatedwithaSERVICEREQUESTmessagewiththeServicetypeIEsettoemergencyservicesfallback.NOTE2:AccessforthepurposeofNASsignallingconnectionrecoveryduringanongoingserviceasdefinedinsubclause4.5
24、.5,orforthepurposeofNASsignallingconnectionestablishmentfollowingfallbackindicationfromlowerlayersduringanongoingserviceasdefinedinsubclause4.5.5,ismappedtotheaccesscategoryoftheongoingserviceinordertoderiveanRRCestablishmentcause,butbarringcheckswillbeskippedforthisaccessattempt.NOTE2a:Accessforthe
25、purposeofNASsignallingconnectionrecoveryduringanongoingprocedureforMOIMSregistrationrelatedsignallingasdefinedinsubclause4.5.5,orforthepurposeofNASsignallingconnectionestablishmentfollowingfallbackindicationfromlowerlayersduringanongoingprocedureforMOIMSregistrationrelatedsignallingasdefinedinsubcla
26、use4.5.5,ismappedtotheaccesscategoryoftheMOIMSregistrationrelatedsignallinginordertoderiveanRRCestablishmentcause,butbarringcheckswillbeskippedforthisaccessattempt.NOTE3:IftheUEselectsanewPLMN,thentheselectedPLMNisusedtocheckthemembership;otherwisetheUEusestheRLPMNoraPLMNequivalenttotheRPLMN.NOTE4:T
27、hisincludesthe5GMMconnectionmanagementprocedurestriggeredbytheUE-initiatedNAStransportprocedurefortransportingtheMOSMS.NOTE5:TheUEconfiguredforNASsignallinglowpriorityisnotsupportedinthisreleaseofspecification.IfaUEsupportingbothS1modeandN1modeisconfiguredforNASsignallinglowpriorityinS1modeasspecifi
28、edin3GPPTS24.36817or3GPPTS31.10222,theUEshallignoretheconfigurationforNASsignallinglowprioritywheninN1mode.NOTE6:Iftheaccesscategoryapplicablefortheaccessattemptis1,thentheUEshalladditionallydetermineasecondaccesscategoryfromtherange3to7.Ifmorethanoneaccesscategorymatches,theaccesscategoryofthelowes
29、trulenumbershallbechosen.TheUEshallusethesecondaccesscategoryonlytoderiveanRRCestablishmentcausefortheaccessattempt.NOTE7:EABoverridedoesnotapply,iftheUEisnotconfiguredtoallowoverridingEAB(seetheOverride_ExtendedAccessBarringleafofNASconfigurationMOin3GPPTS24.36817or3GPPTS31.10222),orifNAShasnotrece
30、ivedanindicationfromtheupperlayerstooverrideEABandtheUEdoesnothaveaPDUsessionthatwasestablishedwithEABoverride.NOTE8:Forthedefinitionofcategoriesa,bandcassociatedwithaccesscategory1,see3GPPTS22.2613.Thecategoriesassociatedwithaccesscategory1aredistinctfromthecategoriesa,bandcassociatedwithEAB(see3GP
31、PTS22.0111A).NOTE9:Thisincludes:a)theUE-initiatedNAStransportprocedurefortransportingamobileoriginatedlocationrequest;b)the5GMMconnectionmanagementproceduretriggeredbya)above;andc)NASsignallingconnectionrecoveryduringanongoing5GC-MO-LRprocedure.NOTE10:Thisincludes:a)theUE-initiatedNAStransportproced
32、urefortransportingamobileoriginatedsignallingtransactiontowardsthePCF;b)the5GMMconnectionmanagementproceduretriggeredbya)above;andc)NASsignallingconnectionrecoveryduringanongoingUEtriggeredV2Xpolicyprovisioningprocedure.RRCS立原因和接入等級(jí)之間的映射Table4.5.6.1:Mappingtableforaccessidentities/accesscategoriesan
33、dRRCestablishmentcausewhenestablishingN1NASsignallingconnectionviaNRconnectedto5GCNRule#AccessidentitiesAccesscategoriesRRCestablishmentcauseissetto11Anycategorymps-PriorityAccess22Anycategorymcs-PriorityAccess311,15AnycategoryhighPriorityAccess412,13,14,AnycategoryhighPriorityAccess500(=MT_acc)mt-A
34、ccess1(=delaytolerant)Notapplicable(NOTE1)2(=emergency)emergency3(=MO_sig)mo-Signalling4(=MOMMTelvoice)mo-VoiceCall5(=MOMMTelvideo)mo-VideoCall6(=MOSMSandSMSolP)mo-SMS7(=MO_data)mo-Data9(=MOIMSregistrationrelatedsignalling)mo-DataNOTE1:AUEusingaccesscategory1fortheaccessbarringcheckwilldetermineasecondaccesscategoryinthe
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