29接入控制.docx
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29接入控制.docx
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29接入控制
接入控制(Unifiedaccesscontrol)
接入控制指的是UE在发起一个NAS层或者AS层的业务/信令请求之前,先要根据一定的机制和控制参数来确认网络是否允许,如果通过了接入控制检查,那么NAS层或者AS层才能够建立NAS、AS的信令和业务连接,否则需要等待一定的时间后才能够再次进行接入控制检查。
目的是在网络比较繁忙的时候,在UE的类型和业务的类型这两个维度上来进行过滤操作,让优先级比较高的UE或者比较重要的业务能够顺利获得服务。
UE在获准发起呼叫过程以后,会在信令上附加发起呼叫的原因。
gNB在获取这个呼叫原因以后,还可以根据本身的实际需要来决定是否接纳这次呼叫,这让gNB拥有了负载控制的功能。
在发起一个业务的时候,需要携带“接入类别”、“接入标识”和“建立原因”三类信息。
在下面事件需要进行接入控制核实:
●UE处于5GMM-IDLE模式,在3GPP接入上有暂停指示,并且发生需要转换到5GMM-CONNECTED模式的事件;
●UE在3GPP接入上处于5GMM连接模式或在RRC_INACTIVE指示下处于5GMM连接模式,并且发生以下事件之一:
1)5GMM接收来自上层的MO-IMS-registration-related-signalling-started指示、MO-MMTEL-voice-call-started指示、MO-MMTEL-video-call-started指示或MO-SMSoIP-attempt-started指示;(也就是打电话)
2)5GMM接收来自上层的请求,以便通过NAS发送MO(mobileoriginated)SMS;也就是发送短信
3)5GMM从上层接收发送ULNASTRANSPORT消息以建立PDU会话的请求;
4)5GMM接收来自上层的请求,以发送ULNASTRANSPORT消息以用于PDU会话修改;
5)5GMM接收到为现有PDU会话重新建立用户平面资源的请求;
6)通知5GMM上行链路用户数据包将被发送到具有挂起的用户平面资源的PDU会话;
7)5GMM接收来自上层的发送MO的位置请求;(主动网络丁伟)
8)5GMM接收来自上层的请求,通过发送包含UE策略容器的ULNASTRANSPORT消息向PCF发送MO的信令事务。
上面这些触发事件总结如下表:
Trigger
Description
NASStateChange
5GMM-IDLE-->5GMM-CONNECTED
ServiceRequest(in5GMM-CONNECTED)
MO-MMTEL-voice-call-startedindication
MO-MMTEL-video-call-startedindication
MO-SMSoIP-attempt-started
MOSMSoverNAS
ULNASTRANSPORTmessageforPDUsessionestablishment(exceptforthepurposeofIDLE->CONNECTEDNASStatechange)
ULNASTRANSPORTmessageforPDUsessionmodification(exceptforthepurposeofIDLE->CONNECTEDNASStatechange)
Requesttore-establishtheuser-planeresourcesforanexistingPDUsession
NotificationforanuplinkuserdatapackettobesentforaPDUsessionwithsuspendeduser-planeresources
有一个业务不受接入控制的限制,那就是注册流程。
有一个简写名称SNPN,全称是Stand-aloneNon-PublicNetwork
接入标识和接入类别(不在SNPN模式下)
当UE进行初始接入时(initiateanaccessattempt),需要关联一个或多个接入标识以及接入类别,接入标识主要是核实SIM卡的信息和PLMN是否能匹配,接入标识如下:
AccessIdentitynumber
UEconfiguration
0
UEisnotconfiguredwithanyparametersfromthistable
1(NOTE1)
UEisconfiguredformultimediapriorityservice(MPS).
2(NOTE2)
UEisconfiguredformissioncriticalservice(MCS).
3-10
Reservedforfutureuse
11(NOTE3)
AccessClass11isconfiguredintheUE.
12(NOTE3)
AccessClass12isconfiguredintheUE.
13(NOTE3)
AccessClass13isconfiguredintheUE.
14(NOTE3)
AccessClass14isconfiguredintheUE.
15(NOTE3)
AccessClass15isconfiguredintheUE.
注1:
访问标识1在以下情况下有效:
USIM文件EFUAC_AIC指示UE被配置为访问标识1和所选PLMN,如果选择了新PLMN,或者RPLMN是HPLMN(如果EHPLMN列表不存在或为空)或EHPLMN(如果EHPLMN列表存在),或者是归属的已访问PLMN
UE从RPLMN接收MPS指示符位设置为“访问标识1有效”的5GS网络特性支持IE。
注2:
接入标识2由为MCS配置的ue使用,并且在以下情况下有效:
USIM文件EFUAC_AIC指示UE被配置为访问标识2和所选PLMN(如果选择了新PLMN),或者RPLMN是HPLMN(如果EHPLMN列表不存在或为空)或EHPLMN(如果EHPLMN列表存在),或者是归属的已访问PLMN
UE接收来自RPLMN的5GS网络特性支持IE,MCS指示位设置为“Accessidentity2valid”
注3:
访问标识11和15在HPLMN(如果EHPLMN列表不存在或为空)或EHPLMN(如果EHPLMN列表存在)中有效。
访问标识12、13和14仅在归属的HPLMN和访问plmn中有效。
接入等级映射表如下:
Table 4.5.2.2:
Mappingtableforaccesscategories
Rule#
Typeofaccessattempt
Requirementstobemet
AccessCategory
1
通过非3GPP接入对寻呼或通知的响应;
为传输LPP消息而启动的5GMM连接管理程序,无需进行5GC-MO-LR程序;
尝试从非3GPP接入切换正在进行的MMTEL语音呼叫、MMTEL视频呼叫或SMSoIP
访问尝试用于MT访问,或从非3GPP访问切换正在进行的MMTEL语音呼叫、MMTEL视频呼叫或SMSoIP
0(=MT_acc)
2
Emergency
UEisattemptingaccessforanemergencysession(NOTE 1,NOTE 2)
2(=emergency)
3
Accessattemptforoperator-definedaccesscategory
UEstoresoperator-definedaccesscategorydefinitionsvalidinthecurrentPLMN,andaccessattemptismatchingcriteriaofanoperator-definedaccesscategorydefinition
32-63
(=basedonoperatorclassification)
3.1
AccessattemptforMOexceptiondata
UEisinNB-N1modeandallowedtouseexceptiondatareporting(seetheExceptionDataReportingAllowedleafoftheNASconfigurationMOortheUSIMfileEFNASCONFIGin3GPP TS 31.102 ,andaccessattemptisforMOdataorforMOsignallinginitiateduponreceivingarequestfromupperlayerstotransmituserdatarelatedtoanexceptionalevent.
10(=MOexceptiondata)
4
Accessattemptfordelaytolerantservice
(a)UEisconfiguredforNASsignallinglowpriorityorUEsupportingS1modeisconfiguredforEAB(seethe"ExtendedAccessBarring"leafofNASconfigurationMOin3GPP TS 24.368 or3GPP TS 31.102where"EABoverride"doesnotapply,and
(b):
theUEreceivedoneofthecategoriesa,borcaspartoftheparametersforunifiedaccesscontrolinthebroadcastsysteminformation,andtheUEisamemberofthebroadcastedcategoryintheselectedPLMNorRPLMN/equivalentPLMN
(NOTE 3,NOTE 5,NOTE 6,NOTE 7,NOTE 8)
1(=delaytolerant)
4.1
MOIMSregistrationrelatedsignalling
AccessattemptisforMOIMSregistrationrelatedsignalling(e.g.IMSinitialregistration,re-registration,subscriptionrefresh)
orforNASsignallingconnectionrecoveryduringongoingprocedureforMOIMSregistrationrelatedsignalling(NOTE 2a)
9(=MOIMSregistrationrelatedsignalling)
5
MOMMTelvoicecall
AccessattemptisforMOMMTelvoicecall
orforNASsignallingconnectionrecoveryduringongoingMOMMTelvoicecall(NOTE 2)
4(=MOMMTelvoice)
6
MOMMTelvideocall
AccessattemptisforMOMMTelvideocall
orforNASsignallingconnectionrecoveryduringongoingMOMMTelvideocall(NOTE 2)
5(=MOMMTelvideo)
7
MOSMSoverNASorMOSMSoIP
AccessattemptisforMOSMSoverNAS(NOTE 4)orMOSMSoverSMSoIPtransfer
orforNASsignallingconnectionrecoveryduringongoingMOSMSorSMSoIPtransfer(NOTE 2)
6(=MOSMSandSMSoIP)
8
UENASinitiated5GMMspecificprocedures
AccessattemptisforMOsignalling
3(=MO_sig)
8.1
Mobileoriginatedlocationrequest
Accessattemptisformobileoriginatedlocationrequest(NOTE 9)
3(=MO_sig)
8.2
MobileoriginatedsignallingtransactiontowardsthePCF
AccessattemptisformobileoriginatedsignallingtransactiontowardsthePCF(NOTE 10)
3(=MO_sig)
9
UENASinitiated5GMMconnectionmanagementprocedureor5GMMNAStransportprocedure
AccessattemptisforMOdata
7(=MO_data)
10
AnuplinkuserdatapacketistobesentforaPDUsessionwithsuspendeduser-planeresources
Nofurtherrequirementistobemet
7(=MO_data)
接入标识和接入类别(在SNPN模式下)
Accessidentities
AccessIdentitynumber
UEconfiguration
0
UEisnotconfiguredwithanyparametersfromthistable
1(NOTE1)
UEisconfiguredformultimediapriorityservice(MPS).多媒体优先级服务
2(NOTE2)
UEisconfiguredformissioncriticalservice(MCS).关键任务服务
3-10
Reservedforfutureuse
11(NOTE3)
AccessClass11isconfiguredintheUE.
12(NOTE3)
AccessClass12isconfiguredintheUE.
13(NOTE3)
AccessClass13isconfiguredintheUE.
14(NOTE3)
AccessClass14isconfiguredintheUE.
15(NOTE3)
AccessClass15isconfiguredintheUE.
接入等级对应哪些服务?
下表
Mappingtableforaccesscategories
Rule#
Typeofaccessattempt
Requirementstobemet
AccessCategory
1
ResponsetopagingorNOTIFICATIONovernon-3GPPaccess(NOTE 11);
5GMMconnectionmanagementprocedureinitiatedforthepurposeoftransportinganLPPmessagewithoutanongoing5GC-MO-LRprocedure;
AccessattempttohandoverofMMTELvoicecall,MMTELvideocallorSMSoIPfromnon-3GPPaccess
AccessattemptisforMTaccess,orhandoverofongoingMMTELvoicecall,MMTELvideocallorSMSoIPfromnon-3GPPaccess
0(=MT_acc)
2
Emergency
UEisattemptingaccessforanemergencysession(NOTE 1,NOTE 2)
2(=emergency)
3
Accessattemptforoperator-definedaccesscategory
UEstoresoperator-definedaccesscategorydefinitionsvalidintheSNPNasspecifiedinsubclause 4.5.3,andaccessattemptismatchingcriteriaofanoperator-definedaccesscategorydefinition
32-63
(=basedonoperatorclassification)
4
Accessattemptfordelaytolerantservice
(a)UEisconfiguredforNASsignallinglowpriorityorUEsupportingS1modeisconfiguredforEAB(seethe"ExtendedAccessBarring"leafofNASconfigurationMOin3GPP TS 24.368 [17]or3GPP TS 31.102 [22])where"EABoverride"doesnotapply,and
(b)theUEreceivedoneofthecategoriesa,borcaspartoftheparametersforunifiedaccesscontrolinthebroadcastsysteminformation,andtheUEisamemberofthebroadcastedcategoryintheselectedSNPNorRSNPN
(NOTE 3,NOTE 5,NOTE 6,NOTE 7,NOTE 8)
1(=delaytolerant)
4.1
MOIMSregistrationrelatedsignalling
AccessattemptisforMOIMSregistrationrelatedsignalling(e.g.IMSinitialregistration,re-registration,subscriptionrefresh)
orforNASsignallingconnectionrecoveryduringongoingprocedureforMOIMSregistrationrelatedsignalling(NOTE 2a)
9(=MOIMSregistrationrelatedsignalling)
5
MOMMTelvoicecall
AccessattemptisforMOMMTelvoicecall
orforNASsignallingconnectionrecoveryduringongoingMOMMTelvoicecall(NOTE 2)
4(=MOMMTelvoice)
6
MOMMTelvideocall
AccessattemptisforMOMMTelvideocall
orforNASsignallingconnectionrecoveryduringongoingMOMMTelvideocall(NOTE 2)
5(=MOMMTelvideo)
7
MOSMSoverNASorMOSMSoIP
AccessattemptisforMOSMSoverNAS(NOTE 4)orMOSMSoverSMSoIPtransfer
orforNASsignallingconnectionrecoveryduringongoingMOSMSorSMSoIPtransfer(NOTE 2)
6(=MOSMSandSMSoIP)
8
UENASinitiated5GMMspecificprocedures
AccessattemptisforMOsignalling
3(=MO_sig)
8.1
Mobileoriginatedlocationrequest
Accessattemptisformobileoriginatedlocationrequest(NOTE 9)
3(=MO_sig)
8.2
MobileoriginatedsignallingtransactiontowardsthePCF
AccessattemptisformobileoriginatedsignallingtransactiontowardsthePCF(NOTE 10)
3(=MO_sig)
9
UENASinitiated5GMMconnectionmanagementprocedureor5GMMNAStransportprocedure
AccessattemptisforMOdata
7(=MO_data)
10
AnuplinkuserdatapacketistobesentforaPDUsessionwithsuspendeduser-planeresources
Nofurtherrequirementistobemet
7(=MO_data)
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