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VoLTE端到端解决方案
VoLTE端到端解决方案沈阳阿法迪通信咨询有限公司主要内容? ? ? ? ? ? ? ? ? VoLTE概述 LTE到VoLTE演进过程中的关键方案 VoLTE网络架构 VoLTE 主要应用场景以及关键技术点 VoLTE主要业务流程 VoLTE网络规划 VoLTE网络可靠性方案 VoLTE端到端的QoS 主要商用运营商案例分享<b
r />议题一? 概述C VoLTE主要规范以及所涉及的域 C 缩略语VoLTE related Feature SetPRD IR.58PRD IR.64PRD IR.94 PRD IR.92PRD IR.65PRD IR.88IMS voice on HSPASRVCC & ICSVideo call additionsIMS Roaming & interconnectLTE RoamingUNIVoice over LTE (IR.92)VoLTEPhoneLTE RAN UE C 编解码 profiles C 数据传输 profiles C Supplementary service 步骤 C 抖动缓冲管理 C IMS 紧急呼叫流程 C CS 共存功能Evolved Packet CoreMMTel IMS CoreLTE EPC C Minimal radio profile defined C 标准IMS APN C 支持语音业务 QoS 承载 C IMS 信令承载 profile C RTP header compression C QoS bearer 处理 C P-CSCF发现 C 省电功能 C IMS紧急呼叫流程 C 动态PCC C IMS紧急呼叫流程IMS feature part C 鉴权 profile C Tel-URI 和SIP URI C Early dialogues / media Telephony Service C MMTel 基本 profile C Supplementary Services C 通过Ut接口和XCAP对 Supplementary service进行管理 C IMS紧急呼叫流程? ? ?GSMA IR9.2 定义了实现Voice Over LTE 3GPP标准MMTel 业务的最小集合，同时 也定义实现VoLTE对Packet core和LTE Radio的能力要求。 GAMA IR9.2 定义了有QoS保障的telephony service的支持和对短信业务的支持 同时也定义了与CS共存和互通。IR.64 ProfileVoLTE PhoneLTEEvolved Packet Core承载的管理t C 与 IR.92相同MMTel IMSTelephony Service C 与IR.92相同IMS Telephony SMSIMS feature part C 与IR.92相同 SMS C 与IR.92相同LTE无线能力 C 与IR.92相同 语音的域选择 - 与 IR.92相同Service Centralization in the IMS IMS 媒体 C 与IR.92相同 T-ADS SR-VCC 从LTE 切换到 3G / 2GIR.64Details that are not in IR.92 or other PRDsIR.64所涉及的内容Anchoring?Service Centralization in the IMSC C IMS 统一做Service execution 主被叫都锚定在IMS ? 从CS接入 ? 从PS接入 (IMS voice capable)CS IMS PST-ADS?T-ADSC C 决定把MT call路由到CS还是PS 支持IMS Voice over PS标识 CS IMS PS?SRVCCC C C SRVCC 架构: 从LTE 到 2G/3G ? 支持标准的语音呼叫 ? 归属地网络和漫游网络 支持 mid-call services 和振铃阶段的call 紧急呼叫时的SRVCC网络架构 ? In the serving networkSRVCCCS IMS PSInvolved DomainsOSS BSSProvisioningLICS Core 2G /3G RANVoLTEPhone(MSS)Mg/MwSV, SGsMMTel IMS CoreSGi, RxMMTel Telephony ServiceLTE RANEvolved Packet CoreMPBN缩略语（部分）AS ATCF ATGW BGF BGCF CSCF DNS E-CSCF GGSN HSS SBG IBCF ICS I-CSCF IMS LTE MGC Application Server Access Transfer Control Function Access Transfer Gateway Border Gateway Function Breakout Gateway Control Function Call Server Control Function Domain Name System Emergency CSCF Gateway GPRS Support Node Home Subscriber Server Session Border Gateway Interconnection Border Control Function IMS Centralized Service Interrogating CSCF IP Multimedia Subsystem Long Term Evolution Media Gateway Controller MME MMTel-AS MRF P-CSCF PDN-GW PGM SBG S-CSCF SCC AS SGSN SRVCC UA UE URI VoLTE Mobility Management Entity Multi-Media Telephony AS Media Resource Function Proxy CSCF Packet Data Network Gateway Presence and Group Management Session Border Gateway Serving CSCF Service Centralization and Continuity AS Serving GPRS Support Node Single Radio Voice Call Continuity User Agent User Equipment Uniform Resource Identifier Voice over LTE议题二? LTE到VoLTE演进过程中关键方案 概览C C C C C C CSFB定义 短信解决方案，SMSoSGs与SMSoIP SRVCC概念 ICS概念及TADS 紧急呼叫 VoLTE 未来的功能? 优先呼叫 ? 漫游Circuit Switched Fall Back (CSFB)CSFBCS CoreCSFB2G / 3G RAN(MSS)CS voice语音Fallback 到CSLTE RANSGsCSFB CSFBEvolved Packet Corehttp://....? CSFB (Circuit Switched Fall Back)C 即便UE附着在LTE时，依然可以利用CS 的语音业务。 C UE需要回到2G/3G网络去接续语音呼叫。 C 网络通过LTE寻呼UE并标识该呼叫请求为CS call。CSFBCSFB functionalitySMS Options over LTESMSo SGsSMS via CSFB SMSoSGsSMS IPCS CoreSMSo SGs SMS VoLTE IPPhone2G/ 3G RAN(MSS) MMTel IMS CoreSMSoIPSGsSMSo SGs SMS IP SMSo SGsLTE RANEvolved Packet CoreSMS IP?SMS over SGsC C C C C C C UE 可以通过LTE的NAS信令发送和接受短信。 CS core来处理短信业务。 需要在CS core和EPC之间建立SGs接口来传送SMS及相关的信令 需要终端支持 直接通过IMS来收发短信。 对现网影响小，但需要部署IP-SMS-GW 需要终端支持。SMSo SGs SMS IP?SMS over IPSMS over SGs SMS over IPSingle Radio Voice Call Continuity (SRVCC)SRVCCCS CoreSRVCC VoLTEPhoneSRVCC2G / 3G RAN(MSS)SRVCCSVSRVCC SRVCCMMTel IMS CoreMMTel Telephony ServiceLTE RANEvolved Packet Core?SRVCC (Single Radio Voice Call Continuity)C 正在进行的VoLTE呼叫无缝的从LTE切换到CS接入网，2G/3G C 主要标准： C GSMA recommendations in IR.64, C 3GPP TS 23.216 and TS 23.237.SRVCCSRVCC functionalityIMS Centralized ServicesICSIMS Centralized ServiceCS Core (MSS)2G / 3G RANVoLTEPhoneICSMMTel IMS Core Evolved Packet CoreMMTel Telephony ServiceLTE RAN?ICS (IMS centralized services)C 终端即便从CS接入网络也从IMS核心网获取MMTel 电信业务。 C 所有的呼叫业务都路由到IMS，并有IMS执行业务请求和触发业务逻辑 C 主要标准 ? GSM recommendations in IR.64 ? 3GPP TS 23.292.ICSICS functionalityICS实现方式I2/eMSC Vs Mg/MSCICS with eMSC and I2Main alternative(for home networks)Um / Uu A BTS NodeB 2G / 3G Abis / IubUtMMTel & SCC AS ISC I2支持ICS（SIP） 功能的MSC叫做 eMSCMw / Mg / MxMMTel / SRVCC phoneBBSC RNCA / IuCSeMSSCSCFMbICS with legacy MSC using CAMEL/ISUP/MgIn visiting networksUt CAMEL MMTel & SCC AS SCP Mg ISC Mw / Mg / MxISUPMMTel / SRVCC phoneUm / Uu A BTS NodeB 2G / 3G Abis / IubBBSC RNCA / IuCSMSSCS voiceMGCF IM-MGWCSCFMbServing NetworkHome NetworkTADS-被叫域选择T-ADS determines whether the Gm or I2 / Mg path to the UE shall be used In case the UE is IMS registered T-ADS can query the MME /SGSN via the HSS to determine if the tracking area is IMS voice capable MME/SGSNSh T-ADS MMTel & SCC AS HLR / HSSS6aGmAMw / Mg / MxISCS&P GWeNodeB LTE BCSCFI2 / Mg SGSNMSSMGCFBSC RNCBTS NodeB GSM / WCDMA紧急呼叫网络架构EC SRVCCCSLocation Retrieval Function (LRF) ECUm / Uu A BTS NodeB GSM / WCDMA Abis / IubBSC RNCA / IuCSMSSMGCF MgMlSvMw MwECEC SRVCCECI2 RxI-/SCSCFI5 I4ECECEC SRVCCMw / Mg / MxS1-MMESRVCCMMES11EC SRVCCGm P-CSCFATCFEC SRVCCEATFBPSAPMw E-CSCF Mb Mi / Mg / Mx/ MmECe-UuEC SRVCCECS1-U S&P GW SGi GxECMbeNodeB LTEAECMbAGW ATGWECFunctionality FunctionalityEATF only applicable for Emergency SRVCC Interfaces marked in red are specific to Emergency call functionPCRFEC SRVCCServing PLMNIMS 紧急呼叫相关标准3GPP / GSMA? ? GSMA:C IR.923GPP :C IMS: TS 24.229, TS 23.167 C EPC: TS 23.401, TS 23.203? ?IR.92 view:C The UE 必须支持 IMS emergency call.如果已经支持IMS 紧急呼叫，那么假设在与CS共存阶段， 网络和UE都必须支持 SRVCC for emergency call (IR.92)VoLTE 其它的功能（一） - 优先呼叫MPSVoLTEPhoneMPSMPSLTE RANEvolved Packet CoreMMTel IMS CoreeMLPP eMLPP pSRVCC pSRVCC MPSPriority Service for VoLTEVoLTEPhone2G/3G RANCS Core (MSS)SVSRVCCMPSpSRVCCMPSMMTel IMS CoreLTE RANeMLPP eMLPP pCSFBEvolved Packet Core2G/3G RAN Fallback for voice LTE RANCS Core (MSS)SGspCSFBCS voicePriority Service for SRVCCEvolved Packet CoreMPSPriority Service for CSFBMPS for Basic VoLTEeMLPPeMLPPpSRVCCSRVCC priority functionspCSFBCSFB priority functionsVoLTE漫游的方案选择VoLTE UE Visited NetworkRadio access Core Network Provide CS Voice utilizing existing capabilities and agreements 2G/3G CSCS VoiceHLR/HSSCarrier NetworkHome NetworkCSSRVCCLTEScope of studyIMSIMS VoiceIMSRemote endIMS Emergency VoiceProvide IMS Voice when ? VPLMN VoLTE support, andPSAP? Roaming agreements for IMS Voice are in place议题三：VoLTE网络架构（含利旧和新建， 以及多厂家组网）C 新建网络 ? 解决方案概览 ? 中国移动IMS 网络现状 ? 3GPP推荐的网络演进的步骤与方向 ? 主要逻辑接口及协议 ? 各逻辑网元功能 C 现网改造 ? CS改造需求 ? IMS改造需求 ? 数据库改造需求 C 紧急呼叫组网规划原则 ? 利旧CS 紧急呼叫 ? 新建 IMS emergency call C VoLTE 未来的组网 ? 优先呼叫 ? 漫游VoLTE 网络架构概览Main componentsS6a S1-MME Gx HSS PCRF Rx Sh MMTel AS ISC Mw / Mg / MxMMES11 Ut e-Uu A eNodeB LTE S1-U S&P GW SGi Gm MbCx MwBP-CSCF /IMS AGwI-/SCSCFMbNote: According to GSMA reccomenendations the Ut trafficf will be handled in a sepparate home routed APNA省单域双厂家IMS组网方案示意一级 ENUM/DNS 运营维护配置 运营维护配置 开通网关 开通网关 计费网关 计费网关BOSS计费网关 计费网关开通网关 开通网关运营维护配置 运营维护配置MMTel MMTel AS AS HSS二级 ENUM/ DNS SLF S/E-CSCF S/E-CSCF BGCF BGCF应用服务器 应用服务器 (Centrex, (Centrex, etc.) etc.)二级 ENUM/ DNS SLF S/E-CSCF S/E-CSCF BGCF BGCF ViG ViG HSSMMTel MMTel AS ASMGCF MGCF池全省用户索引MGCF MGCFViG池I-CSCF I-CSCFims.I-CSCF I-CSCFP-CSCF/SGC P-CSCF/SGCP-CSCF P-CSCFIM-MGWIM-MGWIM-MGWBGW BGWBGW BGWBGW BGWBGW BGW ANet DNSSBC-1 SBC-1SBC-m SBC-mSBC-1 SBC-1SBC-n SBC-nTDM-PBX TDM-PBXTDM-PBX TDM-PBXTDM-PBX TDM-PBXTDM-PBX TDM-PBXIP subnet1 IP subnet2IP subnet1 IP subnet2IP subnet1 IP subnet2IP subnet1 IP subnet2地市 a地市 b地市 m地市 n省西省东厂家1厂家2IM-MGWA运营商核心网演进策略A-IMS 商用A-IMS引入LTE/SAE 网络A-IMS融合的核心网A-IMSHLR/HSSinterworking PSinterworking CS PS SAEaccessing SAECSCS(mAGCF)2 G3 GPON LAN2 G3 GPON LANLTE2 G3 GPON LANLTEStage 1：A-IMS 商用 CS PS A-IMS CS 语音，与IMS语音业务互 通 移动数据业务Stage 2: 引入LTE/SAE和VoLTE CS/IMS语音业务互通 SAE 提供高速数据业务，并演进支 持VoLTEStage 3：以 IMS为主的融合核心网 CS用户可以通过CS接入CM-IMS， 并由IMS为用户提供services 纯 SAE 架构固定接入宽带用户的多媒体业 为固定接入宽带用户和LTE用户提供 用户数据融合，使得不同接入网用户 务 多媒体业务 享受统一的业务稳健推动LTE条件下的语音 业务演进传统2/3G覆盖 孤岛式的LTE覆盖CSFB存在大片连续区域的 LTE覆盖LTE LTE LTE LTE全网优良的基于PS的 IMS语音覆盖LTE LTECS CS CSLTE LTE LTECSFBLTESRVCCLTE LTE ice o LTEVoi ce 3G / HSPALTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTEIMSLTELTELTE LTELTE LTELTE LTE LTE LTE LTE LTE LTE LTELTE LTE LTE LTE LTE LTE LTELTELTELTELTELTELTESV LTE IM LTE LTELTELTE LTELegacy CS voiceLegacy PhoneCS voice service via CSFBIMS Voice service over LTE and CS access LTEIMS Voice service over LTE and HSPAVoLTE PhoneCS attachMSSCSFB PhoneCSFB CS attachMSSVoLTE PhoneSRVCC CSFB CS attachMSSSRVCC & ICSIMSLTE 3G PS IRAT PS HOIMSLegacy architectureCSFBVoLTE + SRVCC / ICSVoPS with IRAT PS HOPre-VoLTE阶段VoLTE阶段主要新增信令接口Volte E2E NWUm / Uu BTS NodeB 2G/3G Sh SGs/Sv SCC AS MMTel Abis / Iub S6a A / IuCS MSS HLR / HSSBSC RNCI2 S1-MME Rx MwP-CSCFMTAS ISC Mw / Mg / MxBMMEGm S11 Mb e-Uu eNodeB LTE GxPCRFATCFI-/SCSCFMbIqS1-U S&P GW SGi ATGw Mb不包括紧急呼叫SGs接口和协议HSSS6a S1-MMEMMEeNodeBUESGsHLRMSCA or Iu CPRNC/BCSA or Iu UP CS domainMGwSGsAPSGsAP SCTP IP L2 L1SGs? SGsAP (SGs Application Part)C Based on BSSAP+ for Gs-interface (MSC-SGSN)SCTP IP L2 L1? SCTP/IP transport instead of connectionless SCCP (SS7)MMEMSCSVHSSS6a接口和协议S1-MMEMMEeNodeBUESvHLRMSCA or Iu CPRNC/BCSA or Iu UP CS domainMGwGTPv2-C messages are used for control signaling MME--〉MSC-S ?SRVCC PS to CS Request ?SRVCC PS to CS Complete Acknowledge MSC-S--〉MME ?SRVCC PS to CS Response ?SRVCC PS to CS Complete Notificationi2接口和协议MMtel& SCC AS ISC Mb I2 RNC/BCSMw /Mg/ MxCSCFHLReMSC-sA or Iu CPUEA or Iu UP CS domainMGwI2采用标准NNI SIP信令，用以控制eMSC与Home IMS之间的路 由信令eMSC-s 〈--〉CSCF ?REGISTER ?200 OK 在CS域发生切换时，Target MSC在向CSCF发起IMS注册后， Source MSC要完成De-REGISTER ?De-REGISTER ?200OK各逻辑网元（IMS 核心网）MMTEL 架构各逻辑网元 overviewCS网络改造CS网络改造起点MSC-S in poolMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SPoolPoolPoolCS网络改造LTE，纯数据MSC-S address configuredMME MMEMSC-S address configuredMMEMSC-S address configuredSMSoSGs MSC-S MSC-SSMSoSGs MSC-SSMSoSGsMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SPoolPoolPoolNote: minimum is to upgrade one MSC-S for SMSoSGs per pool. Redundancy not discussed here.语音业务，CSFBMSC-S address configuredMME MMECS网络改造MSC-S address configuredMSC-S address configuredMMESMSoSGs CSFBSMSoSGs CSFB MSC-S MSC-SSMSoSGs CSFBMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SPoolPoolPoolNote: minimum is to upgrade one MSC-S for SMSoSGs and CSFB per pool. Redundancy not discussed here.CS网络改造VoLTE时代MSC-S address configuredMME MMEMSC-S address configuredMMEIMSSRVCC/ICS SMSoSGs CSFBMSC-S address configuredSRVCC/ICS SMSoSGs CSFB MSC-S MSC-SSRVCC/ICS SMSoSGs CSFBMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SMSC-SPoolPoolPoolNote: minimum is to upgrade one MSC-S for SRVCC/ICS, SMSoSGs and CSFB per pool. Redundancy not discussed here.CS网络改造总结? ? ? ? MSC pool为CS网络演进提供了平滑的路径 改造最小数量的节点，提供最高效的网络功能 随着VoLTE的发展，分步分批改造CS网络 有效的保护和利用CS现有的投资IMS网络改造VoLTE Ims CORE与固网IMS core 相比，需要新增功能节点?固网类应用IMSSF 固网 AS 固网 HSS? VoLTE/SRVCC/RCSVoLTE SCC AS RCS PGM Conferen ce, etc. EPC/IMS HSS- 新功能、新业务 (SRVCC、T-ADS…)MGCFCSCFCSCF TRFMSS- 漫游 - SRVCCSBC/PCSCF SGC ATCF- CSFB - SRVCCAGCFPCSCFPCRF -MMEAGWSBCBGF ATGWGWAKA认证 R10架构 策略控制 新Codec技术点SBC和PCSCFVoLTE与固网IMS的技术不同之处 （ IMS 接入层面） -1/2 VoLTE 固网IMS现状 注解? ? ? SBC需要和P-CSCF合设 ? 位置在P-GW后面，就近接入 ? 移动SBC需要支持的技术要求，与固网 SBC接入不同： ? IMS AKA/Ipsec ? TCP连接保持，MSRP，RTMP ? VoLTE中的SIP信令的Timer和固网 IMS要求不同，如Timer E 与T1应 该显著大于固网 IMS VoLTE UE通常不需要穿越防火墙，所以 VoLTE UE的注册频率往往与核心网相同 （如s）， 但是固网IMS接入 通常有FW， 其UE会通过快速注册（如 90s）来保活 需要支持移动媒体的突发性和漫游特性， 其信令和媒体处理更适合参考GGSN/PGW的Pool架构的集中部署以及分层架构。 VoLTE业务需要QoS的保证（PCRF/Rx） ? 会话需要创建专用的EPS承载 一些补充业务，在会话中，需要修改QoS SBC，P-CSCF分离 SBC通常在地市一级 ? ? 移动SBC和固网SBC 不能共用 需要新建SBC和PCSCF??QoS? ? ?无此要求?对SBC/P-CSCF新的 要求技术点呼叫连续性VoLTE与固网IMS的技术不同之处 （ IMS 接入层面） -2/2 VoLTE 固网IMS现状 注解? 支持SRVCC，新增ATCF/ATGW ? 没有要求 ? 需要新增全新的功能 节点媒体Codec? ?媒体Codec上不同，VoLTE支持HD Voice/Video（Audio：AMR-NB，AMRWB，G.722；Video：H.264） 支持SRVCC，不同CS和VoLTE媒体的 Transcoding? ?Audio：G.711， G.723，G.729 Video：H.263， H.264?需要新建相应的媒体 服务器技术点用户码号、 认证、鉴权 方式 域名VoLTE与固网IMS的技术不同之处 （ IMS 核心网层面） VoLTE 固网IMS现状 注解? ? ? ? ? ? ? ? ? ? 移动号码 IMS AKA IPSec 3GPP标准格式 从USIM卡获取 可以国际路由 ? ? ? ? 固网号码 SIP Digest 省格式域名 自定义 ? 对IMS Core有新的要 求 复用固网的域名有很 大难度 多域名在同一系统 中，造成管理混乱 对E-CSCF新的要求 新增标准的LRF 对IMS Core的路由机 制有影响 开户数据格式不一 样，需要开户网关适 配VoLTE的开通接口 对HSS有新的要求 ? ? 有非3GPP标准的， 只适合固网使用的 LRF，未开通业务 没有支持漫游和游牧 的机制 一个IMPI和二个IMPU ? ? ? ?紧急呼叫VoLTE紧急呼叫（E-CSCF和LRF/RDF ） ? 需要符合3GPP的LRF支持 VoLTE国际漫游标准（RAVEL） 一个IMPI和三个IMPU（3GPP格式的域 名） VoLTE和CS的共号码 需要支持接入/业务域选择 ? ?国际漫游 业务开通共号码和域 选择? ??独立号段?技术点共号码和域 选择 呼叫连续性 补充业务VoLTE与固网IMS的技术不同之处 （ MMTel 业务层面） VoLTE 固网IMS现状 注解? ? ? ? ? VoLTE和CS的共号码 需要支持接入/业务域选择 支持SRVCC，新增SCC AS VoLTE补充业务需要符合GSMA IR.92 补充业务在信令上，需要和PCRF交互， 支持QoS ? ? ? ? 独立号段 没有要求 补充业务，从固网业 务需要出发，更复杂 无QoS要求 ? ? ? ? 对MMTel有新的要求 需要新增全新的功能 节点 对MMTel有新的要求 不同的补充业务在同 一MMTel中，造成管 理混乱、业务的不一 致性 新增标准的AP用户自服务? ?VoLTE用户的业务自管理服务（Ut）接 口 GBA鉴权机制?通过Web门户实现?IMS core网络改造总结? 现网设备平台和软件版本普遍陈酒，需要更换软硬件。 ? VoLTE特有的逻辑网元需要新建，比如SBC，P-CSCF， ATCF，ATGW，SCC AS等。 ? 对HSS以及开户数都有新要求 ? 新增相应媒体服务器，以支持VoLTE特有的CODEC固网IMS 改造支持VoLTE投入过大，OPEX和CAPEX过高， 运维管理太复杂。建议新 建VoLTE IMS core用户数据库改造用户数据库HLR/HSS/UDC改造Step 1 C LTE纯数据时代新建UDC HLR HLRExisting 2G/3G SubscriptionsCS Profiles PS Profiles现网 HLR HLRUDRHSS-SHLR-SCUDBNew USIM Based SubscriptionsUnchanged SubscriptionsNew SubscriptionsPS ProfilesEPC Profiles? LTE 新用户放号（USIM），建议放在新建的融 合数据库UDC上用户数据库HLR/HSS/UDC改造Step 2 C LTE语音时代? 部署新的IMS core ，MSC 具备SR-VCC 能力 ? 现网 2G/3G用户演进支持 VoLTEC 全新UICC (USIM) ，全新 IMSI C 保留现有号码 (MSISDN)? 在UDC里，为用户开通业务 ? 为了平滑的完成新旧IMSI转换，建议：C 旧的subscription搬迁到 UDC C 利用 “IMSI change over” 功能完成新旧IMSI转换数据库改造总结? 原有2G/3G用户数据库保持不变 ? LTE用户在新建融合数据库UDC放号，并开 通相应的业务 ? 分步分批搬迁用户数据紧急呼叫组网规划原则UE detectable Emergency callEPCVoLTE UE 2G/3G RAN 1. 2. 3.? ?利旧CS的紧急呼叫(Valid UICC, non-roaming)IMSAttach Accept indicates: ? IMS VoPS supported ? Emergency Bearer service not supportedCS CoreE-UTRANLTE Cell selection EPC Attach - to default APN PDN Connectivity Request - to IMS APNEstablish IMS default bearer C QCI 5 Recive P-CSCF address4.IMS registrationUser initiates an Emergency call (UE detectable Emergency call) Normal CS Emergency Call procedures apply5.2G/3G RAN cell reselection CS Emergency call establishment6.UE detectable Emergency callEPCVoLTE UE 1. 2. 3.? ?新建IMS 紧急呼叫(Valid UICC, non-roaming)IMSAttach Accept indicates: ? IMS VoPS supported ? Emergency Bearer service supportedCS CoreE-UTRANLTE Cell selection EPC Attach - to default APN PDN Connectivity Request - to IMS APNEstablish IMS default bearer C QCI 5 Recive P-CSCF address4.IMS registrationUser initiates an Emergency call (UE detectable Emergency call MME notifies GMLC about the Cell-ID5.?Emergency PDN Connectivity RequestEstablish priority bearer to Emergency APN6.IMS Emergency registration7.IMS Emergency call establishmentE-CSCF interworks with LRF/RDF (MPC) to add routing and corelation informationsvOLTE未来组网优先呼叫VoLTE未来组网国内漫游? National roamingC IMS 漫游架构 C 省网的主要网元 ? EPC ? IMS incl. TAS / SCC AS ? P-CSCF (incl. IMS ALG and ATCF) ? PCRF ? Notes: C 省间不需要部署全功能的IBCF (such SLA enforcement), 只需要基本 的ALG功能 C 对固网IMS语音，无需部署SCC AS, PCRF 和 ATCF C IP between provincesVoLTE roaming, SRVCC and w & w/o RAVELVoLTE 漫游组网PCRF is the Visited PCRF and as S9 interface is optional in IR.88 not shown and it is not assumed/recommended.VoLTE漫游总结? IMS voice over LTE省间漫游在拜访地所在的 省网需要如下功能节点：C PDN GW, C P-CSCF (including ATCF and IMS ALG) C vPCRF? 国际漫游另需要IBCF ? 利用现有的CS漫游互联机制，MSC Server 采 用SIP (IP interconnect or IPX)VoLTE应用场景及关键技术VoLTE的演进步骤NA Operator 1 *CSLTEDualRadioLTELTENA Operator 1IMS VLTELTELTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE 3G / HSPA LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTE LTEoiceCSNA Operator 2one? h c i h wWE Operator 1CSLTE LTELTECSFBSR-VCCLTELTE LTE LTE LTE e ic o V S LTE IM LTE LTE LTE LTE LTECSLTECSFBLTELTENA Operator 2LTELTE* Additional interim step using dualradio terminals keeping voice on CSSMS over SGs应用场景? LTE数据卡/终端的自动配置和激活C 配置信息通过短信推送下来，自动 配置到数据卡/终端里 C 某些增值业务的激活和去激活 C 重用目前网络上的配置激活机制 C 通过短信告知LTE数据卡/终端用 户，流量使用或时长即将超过套餐 上限 C 国际漫游到新网络时，漫游通知信 息的接受 C 某些LTE数据卡也为用户配备了发送、 接受短信的软件 C LTE终端与2/3G用户的短信互通? 资费告警提醒和漫游信息的通知? 用户发送、接受信息CSFB应用场景? CSFB用户设备在有LTE覆盖的区域会优先选择附着在LTE网络,此时无法同时接入 电路域网络 ? 回落流程由语音业务触发,CSFB用户设备将在LTE和2/3G网络重叠覆盖的区域从 LTE向2/3G网络回落 ? 当语音呼叫结束后,用户设备恢复LTE网络连接 ? 当用户漫游出Home network ? VoLTE 漫游还没ready ? 拜访地网络没有VoLTE 网络。LTE island PS LTE LTE CS (+PS) LTEPS2/3GLTECSFB的应用场景中国大陆用户国际漫出? CSFB ? Voice Centric (for LTE) ? IMS voice preferred, CS voice secondary? CS/PS mode 1 ? Voice centric (for LTE) ? IMS voice preferred, CS voice secondaryLTEMME? CSFB not preferred ? SMS onlyHSS? UE roaming outside of HPLMN indicates to network its CSFB capability ? If network supports CSFB (i.e. does not send “CSFB not preferred” or “SMS only”), terminal will use CSFB procedures ? If network does not support CSFB, the UE will reselect to 2G/3GCSFB的应用场景? CSFB ? Voice Centric (for LTE) ? IMS voice preferred, CS voice secondary国际漫入用户? CS/PS mode 1 ? Voice centric (for LTE) ? IMS voice preferred, CS voice secondaryLTEMME? CSFB not preferred ? SMS onlyHSS? UE roaming into VPLMN indicates to network its CSFB capability ? If network supports CSFB (i.e. does not send “CSFB not preferred” or “SMS only”), terminal will use CSFB procedures ? If network does not support CSFB, the UE will reselect to 2G/3GCSFB C总结? ? 2011 开始有CSFB的商业部署 部署建议：CCSFB with Rel8 Release with Redirect and DMCR for UMTS CCSFB with Rel9 Enhanced Release with Redirect (with RIM) for GSM?运营商可能会要求：CCSFB with Enhanced Release with Redirect (with RIM) for UMTS CCSFB with PSHOCSFB 总结? ? ? ? ? CSFB decouples the introduction of LTE from the introduction of IMS based telephony Re-use of legacy Voice and SMS services and infrastructure Fast time to market Existing legacy roaming agreements can be re-used No service evolution possibilitiesC Stuck to the traditional service portfolio?CSFB gives a slight increase of call setup timesC 0.3-2sec in addition to GSM/WCDMA setup?Impact on ongoing internet sessionsC 3G and 2G with DTM -& Interrupted 5-6secSRVCC应用场景? VoLTE用户设备总是优先附着LTE网络，并且 C 通过IMS网络和相应的AS控制呼叫 C PS承载能区分为数据和语音（视频）业务并可以同时工作 基于LTE无线测量，支持PS到CS的切换流程 C 同时进行的PS数据业务也会根据切换目标网络进行映射 呼叫控制锚定在IMS侧，切换时对应的业务可以映射到目标增强MSC上（ICS）??MMTel call over PSMMTel call over CS LTELTE LTE area LTE2/3GVoLTE用户移出LTE覆盖区GERAN UTRAN GSM / WCDMAHandover triggerSRVCC应用场景MSS ATF & SCC ASAccess transfer BSvSRVCC handoverA LTE LTEMMTel IMSEPC Moving UELTESRVCC handoverCS coverageIMS Telephony Voice to CS handoverC LTE RAN触发切换 C 切换心灵从EPC到CS Core ，MSC-S(via the Sv reference point)C MSC 准备接受切换，并准备从CS 到IMS的连接 C IMS 执行接入网的转换 (via the functional elements ATF and SCC AS)SRVCC R10 - Use Case，PS呼叫建立阶段1. ATCF anchors the call upon establishmentBTS NodeB GSM / WCDMA MMTel & SCC ASSRVCC应用场景BSC RNCMSS3.During call the UE sends measurements on neighbor cells (LTE, WCDMA and GSM) to eNodeB.B?MMEP-CSCF ATCFI-/SCSCF?eNodeB A LTES&P GWATGwSignaling Voice media Home Network ATGW anchors the media upon ATCF decisionServing/Visiting Network 2.SRVCC R10 - Use Case- Call切换重建立阶段6. Media is established towards UEBTS NodeB GSM / WCDMA MMTel & SCC ASSRVCC应用场景BSC RNC3b. The MSS set up a call leg to the ATCF using the STN-SR number. And performs HO towards Access networkMSS4. The ATCF finds the anchored call and executes session transfer3a. The MSS and RAN prepares to receive a handover SRVCC handover 1. The eNodeB decides to do SRVCC HOB?MMEP-CSCF ATCFI-/SCSCFeNodeB A LTES&P GWATGwHO request Signaling Voice media Home Network 5. The ATGW is updated with new media destination for transferred party?2. The MME handles the SRVCC HO via the Sv interfaceServing/Visting NetworkSRVCC应用场景关键技术点 总结SRVCC两个关键参数 ： SRVCC关键技术点 ?SRVCC 师LTE切换到CS成为可能且必要 ? Correlation MSISDN (C-MSISDN) C 初期，CS的覆盖一般都好于LTE C-MSISDN当用户的接入网络发生变 ? 目标网络 化时，用以标识该UE的唯一The CMSISDN与MSISDN相同，(or basic C I2 based ICS和ATCF based SRVCC 端到端方 MSISDN in case of multi-numbering) 案 是 E.164 号码. C Mid-call的切换，比如，振铃阶段的 Call ? C-MSISDN需要在UDC on hold 的切换 （HSS/CUDB）里放号 ?The 3GPP Rel. 10 SRVCC 网络架构 ? Session Transfer Number for SRVCC (STN-SR) C 减少切换过程中语音中断时间 The STN-SR 也是一个E.164的号码， C Recommended by GSMA in PRD IR.64 用来标识ATCF， ATCF是处理SRVCC 接入网转化的网元. ATCF在用户做 C 降低网络部署复杂度 IMS注册时分配给用户的。 当 SRVCC发生时，MSC用STN-SR号码 去请求媒体面从LTE PS切换到CS. ? STN-SR 需要在每个ATCF里配置ICS应用场景Aims at: No service execution in CS domainMMTel & SCC ASAims at: All service execution in IMS and application serversB A BTS NodeB GSM / WCDMABSC RNCMSSCSCF单一IMS based 业务引擎? ? ? 使得从现网CS接入的MMTel终端也可以享用MMTel 业务 不需要HLR/HSS与TAS之间业务数据同步，TAS执行所有的业务逻辑（个别Mid Call部署除 外） IMS处理媒体面业务（e.g. 铃音和通知音等）ICS 可选择的方案originating calls ICS with MSC I2UtICS ICSMMTel & SCC AS ISCICSHLR / HSSI2MMTel / SRVCC phoneUm / Uu A Abis / Iub BTS NodeB GSM / WCDMAMw / Mg / MxBBSC RNCA / IuCSMSSCSCFMbICS with legacy MSCThe alternatives are not exclusive, they are complementary and both needs to be supported.Ut CAMEL ISUP MgICSICSMMTel & SCC AS ISC Mw / Mg / MxHLR / HSSMMTel / SRVCC phoneUm / Uu A Abis / Iub BTS NodeB GSM / WCDMABBSC RNCA / IuCSMSSCS voiceMGCF IM-MGWCSCFMbICSICS functionalityT-ADST-ADS determines whether the Gm or I2 / Mg path to the UE shall be used(Terminating Access Domain Selection)In case the UE is IMS registered T-ADS can query the MME /SGSN via the HSS to determine if the tracking area is IMS voice capable MME/SGSNSh T-ADS MMTel & SCC AS HLR / HSSS6aGmAMw / Mg / MxISCS&P GWeNodeB LTE BCSCFI2 / Mg SGSNMSSMGCFBSC RNCBTS NodeB GSM / WCDMAT-ADS high level functionsIdle mode UE moving between RAT technologiesIMS registered ?NoLTE LTE LTE LTE HSPA HSPA WCDMA GSM GSM GSM HSPA HSPAIMS Voice o PS supported indicated in tracking areasyesOngoing MMTel call ?yesContinue call on access usedNoIMS voice capable PS access ?yesNoI2 registered ?NoyesI2MgGmMgSRVCC 与ICS的关系? SRVCC 从PS切换到CS时，ICS确保用户依然 可以触发与从PS接入时相同的MMTel的业务。 ? 全ICS或者ICS能力不是确保SRVCC的必要条 件，但是ICS确保用户从CS接入时依然能触 发IMS的业务，对SRVCC来说，把呼叫锚定 在IMS是必要的。紧急呼叫时的SRVCC网络架构SRVCCUm / Uu A BTS NodeB GSM / WCDMA Abis / IubECBSC RNCA / IuCSMSSMMTel & SCC AS ISCLocation Retrieval Function (LRF)MlSvMw MwSRVCCI2I-/SCSCFI5 I4SRVCC ECECS1-MMESRVCC ECMw / Mg / MxECSRVCCMMES11SRVCCGm P-CSCFATCFEATFBPSAPIq MbMwE-CSCFECe-UuSRVCCECS1-U S&P GW SGi AGW ATGWMi / Mg / Mm / MxMbeNodeB LTEAECMbECFunctionality FunctionalitySRVCCIMS紧急呼叫的SRVCCHigh level Use CaseUm / Uu A BTS NodeB GSM / WCDMA Sv Mw Mw I2 S1-MME Abis / IubLocation Retrieval Function (LRF)BSC RNCA / IuCSMSSMMTel & SCC AS ISCMlI-/SCSCFI5Mw / Mg / Mx?SRVCCMMES11Gm P-CSCFATCFI4EATFBPSAPIq MbMwE-CSCFe-Uu eNodeB A LTES1-U S&P GW SGi AGW ATGWMi / Mg / Mm / MxMbMbSig. before Signaling after media before Media afterATGW is in media path only if cal been anchored by ATCF语音业务演进步骤小结CSFB阶段CSFB PhoneLegacy CS telephony CSFBMSSLegacy CS telephonyVoLTE阶段VoLTE PhoneCSFB SRVCC & ICS IMS Voice over LTE Legacy CS telephony CSFBMSSIMSVoPS阶段VoPS PhoneSRVCC & ICS IMS Voice over LTE IRAT PS HO IMS Voice over HSPAIMS议题四 ：VoLTE 主要业务流程C CSFB和SMSoSGS的呼叫流程 ? CSFB到GSM ? CSFB到WCDMA/TDSCDMA ? 当CSFB发生在MSC pool边界 ? MTRF与MTRR ? 无线侧的配合 C SRVCC的呼叫流程 ? R9 的组网 ? R10的组网 ? R10的主要信令流程 C 优先呼叫。CSFB High level stepsLTE access selectedCS CoreGSM / WCDMA RANVoLTEPhone(MSS)SGsLTE RANEvolved Packet CoreDetect available network.Check that compatible frequency band exist Perform combined IMSI attach to attach in EPC and CS core. The user may use LTE for data. Paging of incoming calls over LTE The UE falls back to the CS network to handle the call.Attach to the EPC and CS network over LTE.Setup Internet APN and do some browsingPaging / call preparation between UE and MSC over LTEPlace a call / receive a callCSFB LTE&cs 联合注册3. The Ue is CSFB Attached in the LA via the MMEAbis / Iub BTS NodeB GSM / WCDMA A / IuCS Nc / Nb MSS Gb / IuPSBSC RNCSGsLocation Update (LA)4.CSFB subscriber Ue is attached via Combined Attached Combin A) Attach (TSGSNS3MMES4 S11S1-MME2. MME handles the combined PS and CS Attach. For the CS Attach it maps TA-&LA and makes a Location Update over SGsInternete-UuCSFB phoneAeNodeB LTES1-US&P GWSGi1. CSFB subscriber Ue initiates attach procedures to LTE using Combined Attach成功联合注册流程CS Fallback 可选方案1. RRC Connection Release with RedirectC C eNodeB orders UE to move to a pre-configured 2G or 3G frequency, UE may select other frequency/RAT depending on signal quality Optional enhancements: ? WCDMA: Deferred Measurement Control (DMCR) ? Instruction from target cell (in SIB3) to not read other time consuming SIB’s (related to measurement control) ? GSM: RAN Information Management (RIM) ? eNodeB requests System Information from target network via packet core and provide it to UE during CSFB. No need to read time consuming SIB’s in target network2.PS HandoverC eNodeB orders UE to move to a GSM or WCDMA cell by using PSHO procedures. eNodeB may decide target cell based on measurements during the HO preparation phase. Target cell SI provided to UE during the HO procedureCSFB with RRC Connection Release with Redirect1. CSFB subscriber roam in LTE. CS signaling over Uu-S1-SGs (LU, page etc.) 5. eNodeB orders UE to move to a GSM or WCDMA frequency with the RRC Connection Release with Redirect message.e-Uu4. UE may optionally be requested to measure signal on all available cells (otherwise blind HO)eNodeBS1LTEMME3. Page over SGs, S1, e-UuSGsUm / UuNodeB RBS(A / Iu)MSC-S6. UE fall back to GSM or WCDMA. System info read in target cell.MSC-S 2. Incoming call to subscriber in LTEGSM / WCDMA7. Page response and call setup over GSM or WCDMARAN Information Management(RIM)1. eNodeB stores information (id and signaling strength/quality) about neighboring GSM cells from measurement reports from the UE’s.2. eNodeB requests System Information (SI) for the overlapping GSM cells via the packet core network.3. SI request/response relayed by the MMEeNodeBS1MMELTE6. eNodeB provides SI to UE at CSFB.SGn ?RBSA-bisBSCGbSGSNGSM4. SI request/response relayed by the SGSN7. UE do not need to read SI in GSM =& Faster call setup !5. BSC provides SI based on regular intervals (requests) or when ever the configuration is changed.Deferred Measurement Control1. UE fall back to WCDMAeNodeBS1MMELTE SGs2. UE reads SIB3 = DMCR on/offRBSIubRNCIuMSC-SWCDMA3a. DMCR on = UE awaits with reading SIB 11, 11bis and SIB 12 =& Faster call setup! SIB 11, 11bis and 12 are read later during the call3b. DMCR off = UE reads SIB 11, 11bis and 12 at their regular broadcast intervals (every 1.4 s). Call setup continues after SIB’s are read.?CSFB发生在MSC（pool）边界 区域 极端情况，在池边界上，发出page的MSC和收到Page resp的MSC不是同一个MSC，此时该呼叫要么失败，要不建立时间明显加长C 两种解决方案 ? MSC Pool 通过TMSI-NRI把page response 路由到正确的MSC上 C 目前对MSC pool边界处理，依然无法解决 ? MT Roaming Forward 把呼叫重路由到新的MSC上 C 需要额外的呼叫建立时间， 因为要执行 LU procedureMSC Area 1MSCPageMMEMSC Area 2MSC MMECSFB reg. MSCTA = 1Pa gePa gere sp .TA = 2UETA = 3CS FallbackLA = 1LA = 2LA = 3CSFB3. UE fall back to GSM or WCDMA. Cell 2 (MSC 2) is selected due to better signal than in cell 1 (MSC 1) 4. Page response received in MSC 2, subscriber not registered triggers MTRF 8. MSC 2 awaits the LU procedure to be completed and then set up the call e2eHigh level call floweNodeBMTRFS1LTE e-UuMME 2. Page over SGs, S1, e-Uug ppin A ma T A -LSGsUm / Uu (A / Iu)NodeB RBSUm / UuNodeB RBSMSC 2(A / Iu)MSC-SGSM / WCDMAMSC 1 1. Incoming call to subscriber in LTEGSM / WCDMACell 2Cell 16. MSC 2 sends UL to HLR which (optionally) can authorize use of MTRF.E5. MSC 2 requests identification (for auth.) from MSC 1, also indicating support of MTRF7. MSC 1 sends PRN req. to MSC 2 which provides MSRN. MSC 1 reroutes the call to MSC 2 (IAM)MT Roaming RetrySignaling, routing and impacted nodesMT Roaming Forward2nd 14. 4. S ck RI a RI SMTRF Vs. MTRR 1(2)MT RI ( RR ) R)MT Roaming RetrydS M RI ( TRHLR2n 11.1. SRR)R) TR M ( ck RI a ) RR 4. S MT ( I R 1. SR) TR (M ck Na PR R) TR nd .2 (M N 13 PR ) nd RR .2 12 MT L( 8. UHLRRRRNackMTRN9. C3. PI AM(MTR5. IAMR)MSC 16. PageMSC 27. LUMSC 16. Page3. P15 .2 nd2. PGMSCGMSCA 5. IRNack (M10. CL9. UL2. PL(RN(MTTRR))D 10. M( MT RR ) ropMSC 27. LUk bac8. Id check (MTRF) 11. PRN / IAMLegend MTRF/MTRR functions Design base functionsMTRF Vs. MTRR 2(2)MT Roaming ForwardImpacted nodes Routing VMSC only (HLR optionally) Directly from old to new VMSC with direct PRN Additional delay due to the UL, LU and PRN proceduresMT Roaming RetryVMSC, GMSC & HLR Back to GMSC, 2nd SRI/PRN to HLR, then to new VMSC Similar to MTRF but with extra delay for the repeated PRN & SRI procedures via HLR, big issue for int. roaming MVV of three node types, mandatory since HLR works with all VMSC’s MTRR with GMSC and HLR in different countries than VMSC, lots of agreements to updateCall setup timeMulti-vendorMVV of one node type, can be avoided if VMSC vendor’s are dedicated per region No issue, MTRF in local network onlyInternational roamingSRVCC Architecture Evolution in 3GPP R9SRVCC Architecture Evolution in 3GPP R10Registration Rel-10During registration, three key actions are taken: 1. Decision to include the ATCF in the path for coming calls. 2. Updating the STN-SR to point to the ATCF. 3. Providing correlation information (C-MSISDN) and routing information (ATU-STI) to the ATCF from the SCC AS.NOTE: If the ATCF decides not to be included (or no ATCF is present), no STN-SR will be sent to the SCC AS. The SCC AS will then update the HSS with the STN-SR pointing to the SCC AS, and the SRVCC procedures will fall back to Rel-9 SRVCC procedures.Origination Procedures Rel-10During call setup, following key action is taken: 1. Decision to anchor the media in the ATGW by the ATCF.Termination Procedures Rel-10During call setup, following key action is taken: 1. Decision to anchor the media in the ATGW by the ATCF.Access Transfer (media anchored in ATGW)During access transfer, two key actions are taken: 1. The access transfer request is terminated in the ATCF, that redirects the media in the ATGW to the MSC/MGW. The media towards the remote UE from the ATGW is not changed. 2. The ATCF informs the SCC AS of the access transfer, and the SCC AS performs any additional transfers of mid-calls if required.Access Transfer (media anchored in ATGW)During access transfer, two key actions are taken: 1. The access transfer request is terminated in the ATCF, that redirects the media in the ATGW to the MSC/MGW. The media towards the remote UE from the ATGW is not changed. 2. The ATCF informs the SCC AS of the access transfer, and the SCC AS performs any additional transfers of mid-calls if required.Priority CallMPSVoLTEPhoneMPSMPSLTE RANEvolved Packet CoreMMTel IMS CoreeMLPP eMLPP pSRVCC pSRVCC MPSPriority Service for VoLTEVoLTEPhone2G/3G RANCS Core (MSS)SVSRVCCMPSpSRVCCMPSMMTel IMS CoreLTE RANeMLPP eMLPP pCSFBEvolved Packet Core2G/3G RAN Fallback for voice LTE RANCS Core (MSS)SGspCSFBCS voicePriority Service for SRVCCEvolved Packet CoreMPSPriority Service for CSFBMPS for Basic VoLTEeMLPPeMLPPpSRVCCSRVCC priority functionspCSFBCSFB priority functionsOriginating CallMPS Subscribed UserEPCPCRF P-CSCF I/S-CSCFUE can include preferred priority to use. P-CSCF authorizes the priority and make sure correct priority is in the INVITE setup. Optional Early Rx to upgrade existing bearers IMS Priority level is provided over Rx. Existing signaling bearer etc are upgraded if needed. The QCI-1 bearer is created with ARP value matching the priority sent over Rx.Session Based Priority - MPS StringUE includes an “MPS string” in the Invite (as part of dialstring). P-CSCF uses the MPS string to set a temporary RPH priority for the call. Optional Early Rx to upgrade existing bearersEPCPCRF P-CSCF I/S-CSCF MPS ASOriginating CallAS confirms temporary priority and sets correct RPH.The confirmed IMS priority is provided over Rx. Existing signaling bearer etc are upgraded if needed The QCI-1 bearer is created with ARP value matching the priority sent over Rx.议题五：VoLTE 个Domain的规划设计C IMS与MSS网络规划设计 ? 结合某省现网分步引入VoLTE ? 目标网络 C EPC 网络规划设计 ? R10的主要信令流程 C UDC ? 2G/3G/4G放号原则 ? 数据融合 C IP骨干网Lte ranVoLTE信令堆栈Extracted from Official Document IR.92GSMA PRD IR.92 C “IMS Profile for Voice and SMS”MSS和IMS某省网落现状（IMS和CS）HLRTDMRNC MGCF3GNodeBMSC-STDMTDM STPTDMMSC-SGMSC-SIMS ASCSCFIMS HSSBSCATM TDMM-MGWIP BBIP BB2GRBSIMS Network in the other provincesMSS CNIPM-MGWGMGWIMMGWMRFPSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMCE CorporateA-SBGBICCCMN/TMSSBICCMSS in the other provincesIMS ANTDM ISUPPSTN/PLMN Networks说明：T局正在逐步演进到统一的CMN（长途局）。逐步向目标网络演进--大容量软交换节点开始引入开始引入大容量MSC-S和M-MGW节点 (即 BC和 GMPv4)HLRTDMRNC MGCF3GNodeBMSC-STDMTDM STPTDMMSC-SGMSC-SIMS ASCSCFIMS HSSBSCATM TDMM-MGWIP BBIP BBIMS Network in the other provinces2GRBSM-MGWGMGWIMMGWSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateA-SBGBICCCMNBICCMSS in the other provincesTDM ISUPPSTN/PLMN Networks逐步目标网络演进-- 分离式SBC在网络中部署HLRTDMRNC MGCF3GNodeBMSC-STDMTDM STPTDMMSC-SGMSC-SIMS ASCSCFIMS HSSBSCATM TDMM-MGWIP BBIP BBIMS Network in the other provinces2GRBSM-MGWGMGWIMMGWSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateA-SBG C-BGFBICCCMNBICCMSS in the other provincesTDM ISUPPSTN/PLMN Networks分离式SBC: C-BGF和P-CSCF(SGC)逐步向目标网络演进--A接口ip化和IUCS接口IP化A接口和IuCS接口IP化HLRTDM STP演进到 IP STP组建M-MGW池组和MSC-S Pool融合TDMRNC MGCF3GNodeBMSC-STDMIP STPTDMMSC-SGMSC-SIMS ASCSCFIMS HSSBSCATM TDMM-MGWIP BBIP BBIMS Network in the other provinces2GRBSM-MGWGMGWIMMGWSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateC-BGFBICCCMNBICCMSS in the other provincesTDM ISUPPSTN/PLMN Networks逐步目标网络演进-- 为hlr引入UDCUDC与传统HLR并存CUDB HLRTDMRNCHLR-FE3GNodeBMSC-STDMIP STPMGCF MSC-S GMSC-SIMS ASCSCFIMS HSSIP BBBSCIP BBIMS Network in the other provinces2GRBSM-MGWM-MGWGMGWIMMGWSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateC-BGFBICCCMNBICCMSS in the other provincesTDM ISUPPSTN/PLMN Networks逐步向目标网络演进-- ims与CS网络融合（将MGCF, ibcf, im-mgw和ibgf放置在CS网络）? MGCF和IBCF功能融入到G-MSC-S节点 ? IM-MGW和IBGF功能融入到G-M-MGWCUDB HLRTDMRNCHLR-FE3GNodeBMSC-STDMIP STPMGCF MSC-S GMSC-SIMS ASCSCFIMS HSSIP BBBSCIP BBIMS Network in the other provinces2GRBSM-MGWM-MGWGMGWIMMGWSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateC-BGFBICCCMNBICCMSS in the other provincesTDM ISUPPSTN/PLMN Networks逐步向目标网络演进-- 为LTE(数据卡)用户引入SAE HSS FE和CS短信业务（SMSosgs）MSC-S支持与MME的SGs接口，为LTE用户提 供CS短信(SMSoSGs)eNodeB为LTE用户引入SAE HSS FECUDBLTEHLRTDMRNCHLR-FESAE HSS FEIBCF MGCF3GNodeBMSC-STDMIP STPMSC-SGMSC-SIMS ASCSCFIMS HSSIP BBBSC IBGFIP BBIMS Network in the other provinces2GRBSM-MGWMMEServing GwPDN GwM-MGWGMGW IM-MGwSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateC-BGFBICC TDM ISUP RTP SIPCMNBICCMSS in the other provincesPSTN/PLMN Networks and Other operators’ IMS network逐步向目标网络演进--为LTE终端提供CS语音和高清视频呼叫业务支持CS语音(CSFB)业务（可选）eNodeBCUDB HLR仅为固网IMS用户提供HSS功能IBCF MGCF SCC ASLTETDMRNCHLR-FEHSS FE3GNodeBMSC-STDMIP STPMSC-SGMSC-SMMTel ASIMS ASCSCFIMS HSSIP BBBSC IBGFIP BBIMS Network in the other provinces2GRBSM-MGWMMEServing GwPDN GwM-MGWGMGW IM-MGwSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateC-BGFBICC TDM ISUP RTPCMNBICCMSS in the other provincesPSTN/PLMN Networks and Other operators’ IMS network为双待或CSFB终端的高清视频呼叫业务提供 IMS HSS的功能SIP为双待或CSFB终端的高清视频呼叫业务提供 IMS AS的功能逐步向目标网络演进-- M-MGW支持MRFP功能,以及引入VOLTE和SRVCC/ICS支持I2接口，来提供 SRVCC/ICS业务eNodeBCUDB HLRLTETDMRNCHLR-FESAE HSS FEIBCF MGCFSCC AS3GNodeBMSC-STDMIP STPMSC-SGMSC-SMMTel ASIMS ASCSCFIMS HSSIP BBBSC IBGFIP BBIMS Network in the other provinces2GRBSM-MGWMMEServing GwPDN GwM-MGWGMGW IM-MGwSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMMRFPCE CorporateC-BGFBICC TDM ISUP RTP SIPCMNBICCMSS in the other provincesPSTN/PLMN Networks and Other operators’ IMS networkM-MGW支持MRFP逐步向目标网络演进-- 固网IMS HSS融入UDC将IMS固网用户迁移到UDCeNodeBCUDB HLRLTETDMRNCHLR-FEHSS FE eMSCIBCF MGCFSCC AS3GNodeBMSC-SIP STPMSC-SGMSC-SMMTel ASIMS ASCSCFIMS HSSIP BBBSC IBGFIP BBIMS Network in the other provinces2GRBSM-MGWMME?将传统HLR里的用户迁移到UDC ?传统HLR逐渐退网Signaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMServing GwPDN GwM-MGW MRFPGMGW IM-MGwSGC P-CSCFCE CorporateC-BGFBICC TDM ISUP RTP SIPCMNBICCMSS in the other provincesPSTN/PLMN Networks and Other operators’ IMS network目标网络eNodeBCUDBLTEHLR-FE HSS FE eMSC RNC IP STP IBCF MGCF SCC AS3GNodeBMSC-SMSC-SGMSC-SMMTel ASIMS ASCSCFIP BBBSC IBGFIP BBIMS Network in the other provinces2GRBSM-MGWMMEServing GwPDN GwM-MGW MRFPGMGW IM-MGwSGC P-CSCFSignaling over IP Media over IP Signaling over IP TDM/ATM Media over TDM/ATMCE CorporateC-BGFBICC TDM ISUP RTP SIPCMNBICCMSS in the other provincesPSTN/PLMN Networks and Other operators’ IMS network目标网络部署架构Provincial Center Region 1CMN DNS/ENUM DRA SLFProvince CenterIMS AS DNS/ENUMCMNIP STPRegion 2/NCMN DNS/ENUMCUDBHSS-FEMSC-SRegion CenterSGW/PG W/GGSNMME/SG SNPCRFMMTel AS/ SCC ASS/I/ECSCF/BGCFCUDBHSS-FEMSC-SRegion CenterSGW/PG W/GGSN ATGW/IM S-AGWMME/SG SNPCRFMMTel AS/ SCC ASS/I/ECSCF/BGCFHLR-FEIP STPMSCS/eMSCATGW/IM S-AGWIMS ASATCF P-CSCF IMS ALGHLR-FEIP STPMSCS/eMSCIMS ASATCF P-CSCF IMS ALGM-MGWMMGW/MRFPCity 1C-BGF(for fixed)… … …M-MGWMMGW/MRFPM-MGWMMGW/MRFPCity NC-BGF(for fixed)City 1C-BGF(for fixed)… … …M-MGWMMGW/MRFPCity NC-BGF(for fixed)GMGW/IMMGW/IBGFG-MSCS/MGCF/IBCFG-MSCS/MGCF/IBCFGMGW/IMMGW/IBGFGMGW/IMMGW/IBGFG-MSCS/MGCF/IBCFG-MSCS/MGCF/IBCFGMGW/IMMGW/IBGFEPC建议运营商所采纳的LTE/EPC演进 路线EPC网络 四网融合的 公共核心网云计算 500亿连接！ IMS语音和 实时业务的 支持核心网融合 演进阶段多接入的连 续性数据业 务支持LTE引入阶段高速数据业务 支持LTE部署阶段LTE热点覆盖 2012 LTE中度覆盖
LTE深度覆盖
LTE全覆盖 2018-LTE热点覆盖阶段C EPC建设方案2G/ EDGE RAN 现有PS CoreSGSN池组化增强SGSN间负载均衡能 力，池组内SGSN升级MME不会影响 现有用户业务感知，便于网络向LTE 升级GERAN SGSN SGSN GGSNUTRAN3G / RANDNS PCRFPCRF同时控制现有PS Core和EPC的网络策略MME MME S/P-GW新建MME和GW，支持 LTEeNodeBLTE RANEvolved Packet Core［ LTE网络与2G/3G相互独立，SGSN池组化为进一步升级做准备］CEPC提供更强承载能力和更智能的业务处理能力2G / EDGE RAN 现有PS CoreLTE热点覆盖阶段GERAN SGSN SGSN GGSNUTRAN3G / RANDNS PCRFPCRF根据接入网络类型 调整服务质量，便于用 户根据接入网络不同得 到相对应的业务体验MME MME S/P-GWeNodeBLTE RANEvolved Packet CoreMME池组化提供负载均 衡能力，提供更智能的 寻呼以节省信令［ EPC网络与未升级网络之间的能力通过策略协调 ］C WLAN作为高流量分流补充接入2G / EDGE RAN 现有PS CoreLTE热点覆盖阶段GERAN SGSN SGSN GGSNPCRF可实现WLAN和蜂 窝网统一策略控制，协 调用户在蜂窝网和WLAN 网中的业务感知UTRAN3G/ RANCUDBPCRFMME MME eNodeBRadius ProxyS/P-GWLTE RANEvolved Packet Core EAP-SIMAAARadius802.1x EAP-SIM/AKA WIFI PPPoE LTE RAN WLAN access AC/BNGWLAN用户统一认证，优 化用户感受，在高数据量 区域实现业务分流LTE热点覆盖阶段-EPC建设总结? 可采取新建或者平滑升级两种方式建设EPC ? 新建的MME组pool，提供负载均衡能力和 核心网健壮性 ? 推进SGSN 池组建设以保证未来升级为MME 时不影响正常业务 ? 推进PCC建设，为融合的2G/3G/4G策略控制 做准备C 升级SGSN，支持2G/3G/LTE互操作SGSN升级支持为LTE终端选择 GW的能力，保证多接入下的 数据业务连续性2G / EDGE RAN 现有PS CoreLTE中度覆盖阶段GERAN SGSN SGSN GGSNUTRAN3G / RANDNSPCRF打通SGSN与EPC GW之 间的IP连接，使具备 LTE能力的用户始终连 接到同一个业务网关， 得到同一个IP地址MME MME S/P-GWeNodeBLTE RANEvolved Packet Core［　　　支持LTE终端在2G/3G/LTE接入下业务连续性　　　］LTE中度覆盖阶段C 新建或进一步升级为公共核心网，提供多接入支持2G/ EDGE RAN 现有PS CoreGERAN SGSN SGSN GGSNficLTE Capacity 100%traf根据实际接入流 量自动分配和调 整节点资源UTRANPCRF3G / RANMix ed100% GSM Capacity100% 3G CapacitySGSN-MME MME eNodeB S/P-GWLTE RANEvolved Packet Core多接入SGSN-MME保证用户 跨接入移动的信令优化，节 点资源根据实际使用需求自 动在不同接入间分配［ 公共核心网实现多接入方式下 硬件资源共享 动态调配］C 逐步升级SGSN为S4 SGSN，优化网络性能IP NetworksLTE中度覆盖阶段S4 SGSN通过 Diameter接口协 调UDC 数据管 理，统一和简化 签约数据接口HPLMN VPLMN S6dPCRF DB PGW HSS S6a S8S4 SGSN多接入移动性 锚点始终是距离无线近 的网关，避免用户移动 时频繁发送信令给归属 地网关，节省信令开销SGSN全面升级支持 S4接口，提升后相 兼容能力，向数据 面全融合演进2G2G 3GS4 SGSNMMESGWS4 SGSN优化3GDT直传隧 道信令，减少SGSN和 SGW的网络信令负荷3G LTE2G 3G LTELTE中度覆盖阶段C WLAN融合与业务连续性现有PS Core 2G / EDGE RANGERAN SGSN SGSN GGSNUTRAN3G / RANCUDBPCRF实现用户在WLAN接 入下的自营业务访 问和业务连续性S/P-GWMME MME eNodeBRadius ProxyLTE RANEvolved Packet Core EAP-SIMAAARadius802.1x EAP-SIM/AKA WIFI PPPoE LTE RAN WLAN access AC/BNGS2a GTPLTE中度覆盖阶段-EPC建设总结? 升级SGSN，提供GW选择能力，实现2G/3G/4G互操作 ? 选择合适的GGSN升级为LTE-GW，提高网元资源利用 ? 新建或进一步升级为融合2G/3G/4G公共核心网，并支持 动态分配资源 ? 逐步升级现网SGSN为S4-SGSN，优化网络性能 ? 推进S2A接口建设，为WiFi用户提供融合的连续业务支 持LTE 深度覆盖阶段C EPC用户面全融合现有PS Core 2G/ EDGE RANGERANS4 SGSN SGSN升级GGSN为GW，实现 用户面全融合，网络可 以为用户选择路由最近 网关UTRANUDC3G / RANS/P-GWSGSN-MME MME eNodeBPCRF?S4 SGSN升级是用户 面全融合的前提 ?用户面全融合网关 使网关灵活部署成为 可能LTE RANEvolved Packet Core［　　　统一计费和策略接口，优化切换感知　　　　］LTE 深度覆盖阶段C EPC控制面全融合2G/ EDGE RANGERAN UDCPCRF将SGSN Pool与SGSNMME Pool融合为SGSNMME Pool，实现控制面 全融合网络UTRAN SGSN-MME3G/ RANSGSN-MMES/P-GWEvolved Packet CoreeNodeBLTE RAN?SGSN-MME控制面 全融合实现资源优化 部署，使控制节点灵 活部署成为可能 ?三接入的SGSNMME pool使控制面 资源更优共享［ 融合SGSN-MME Pool，优化资源使用 ］LTE 深度覆盖阶段C 四网融合策略控制2G/ EDGE RAN Evolved packet coreGERANSGSN-MME SGSN-MME UTRANEPC GWOSSQoS策略与计 费功能的协 调，套餐变化 可以与到用户 的QoS策略结 合灵活使用3G / RANUDC eNodeBOCSPCRFLTE RAN802.1xAAAWLAN接入分流 策略控制，中 国移动自有业 务接入和WLAN 接入是的业务 连续性得到保 障PCRF内置ANDSF功能， 提供终端在蜂窝网和 WLAN网选择策略建 议，路由疏导EAP-SIM/AKA WIFI PPPoE LTE RAN WLAN access AC/BNGLTE 深度覆盖阶段-EPC建设总结? EPC网络进一步扩容，适应业务增长需求 ? 升级全网GGSN为GW，实现用户面全融合，优化资源 使用 ? 升级全网SGSN为SGSN-MME，并建设统一的SGSNMME池组，达到EPC控制面全融合，优化资源使用 ? 推进网络PCC建设及和IMS的协同工作，保证SRVCC等 实时业务的QoS ? 提供2G/3G/4G/WiFi 四网全融合的计费和策略控制， 保证用户感知C EPC信令与路由优化并增强对云计算和物联网支持LTE全覆盖SGSN-MME Pool集 中化部署， 信令优化的物联网 支持UDCPCRF云计算，媒体缓存和 CDN支持，优化业务体 验EPC GWSGSN-MME SGSN-MME SGSN-MMESGSN-MME poolEPC GWEPC GW基于业务的EPC GW分 布部署优化路由2G3GLTEFIX +WLAN-EPC建设总结LTE全覆盖? 持续进行网络优化，在流量集中区推动GW分 布式部署，减轻传输压力，提高用户感知 ? 推进在核心网上部署CDN/TIC/WebCache等增强 功能，增加网络访问速度，降低网络互联流量 成本 ? 针对不断增长的物联网需求，优化EPC网元功 能EPC公共核心网阶段建议总 结 LTE热点覆盖 LTE中度覆盖 LTE深度覆盖 LTE全覆盖阶阶段 网络特点高速数据业务 支持阶段多接入的连续性 数据业务支持阶段IMS语音和实时 业务的支持段支持500亿高速 连接的网络社 会！ CDN,物联网等业 务增强能力支 持，路由全面优 化 EPC GW分布式 部署，支持媒体 增强处理能力， SGSN-MME信令 处理能力进一步 优化引入功能MME Pool,融合 S4 SGSN引入， IMS实时业务策 PCC,WLAN统一 三接入SGSN略支持，全融合 MME功能支持， 网络支持 认证 WLAN S2a接入 能力 新建MME和EPC SGSN升级支持 GW, SGSN池组 网元选择能力， MME开通多接入 化 支持，SGSN开 始向S4 SGSN逐 步升级，GGSN 升级为GW GGSN全面升级 为EPC GW,SGSN全面 升级为SGSNMME, PCC与 IMS协同网络改造UDCHLR 演进outlook scopeHLR Classic HLR Layered Y2013 HLR&HSS Convergence Y 2015 User Profile Convergence After 2015HLR-S HLR CUDBHLR-SHSS-SHLR-SHSS-SCUDBCUDBMTASAAAPGMSAPCEIRNow~ 2 years~ 3 to 5 years~ 5 to8 years例如：某运营商 HLR-UDC 演进现有HLR 部署　网络容量?135M 动态用户 / 200M 静态用户UDC 目标网 　网络容量? 135M 动态用户 / 200M 静态用户网元分布?91 HLR (R12 ) 部署在20个城市网元分布? ６个UDC 系统分布在6大片区16XHLR/FNR APZ 212 33 APZ 212 40HLR/FNR HLR/FNR HLRAPZ 212 40HLR -SAPZ 212 50HLR/FNR HLR/FNR HLRAPZ 212 50 HLR APZ 5.0 212 60 EMAAPZ 212 50HLR/FNR HLRAPZ 212 33HLRHLR -S HLR-SFE APZ 212 50　CUDB CUDBCUDB PG CUDB PG14X 114X32X + 23X3X 8XX　33x12X备份?1+1 热备备份?1+1　 用户数据备份 ?N+1 HLR 前端处理备份分层架构，大容量，集中化，大区制某运营商UDC 组网建议? 全网按照CS/PS核心网信令汇接区建设６个UDC 系统，集中部署在LSTP 汇接城市C 　CUDB 1+1 备份，部署在同城的三个局址或者不同 城市 C 　HLR FE , N+１备份,建议采用少量大容量节点进行集 中部署，与CUDB 同城同局址　 C 　PG , 1+1 备份，与CUDB 同局址? 组网方案需要考虑的因素1) IP 网，O&M等配套的统一建设；FE 远端放置将造成地市IP 网的重新规划和建设 2) 信令面的集中。FE 远端放置, 将占用大量长途传输，信令点和信令链路的维护，信令迂回。 3) 从容量上考虑，少量大容量前端机即满足一个区的处理能力需求( 如3个CP60，４个Cp50) 　某运营商UDC 组网－网络图OSSNMSCRM/BSSDCNLSTP汇接区中心 3 LSTP汇接区中心 2 LSTP汇接区中心 1PG PG PG PGLSTP汇接区中心 6 LSTP汇接区中心 5 LSTP汇接区中心 4PG PGHLR-S HLR-S HLR-S HLR-SDB CUDB DB CUDB DB CUDB DB CUDB DB CUDB DB CUDB DB CUDB PG DB CUDB PG DB CUDBDB CUDB DB CUDB DB CUDBIP 专用 承载网HLR-SPGDB CUDB DB CUDB PG DB CUDB DB HLR-S CUDB DB CUDB PG DB CUDBPGHLR-S HLR-SHLR-SHLR-SHLR-SSTP SGSN STP SGSN STP STP SGSN STP STPSGSN STP STP6 SGSN STP STP SGSN STP STPCS/PS 核心网UDC针对传统HLR的N+1实时容灾保护方案支持传统HLR演 进到UDCHLR #2 Active for expansionactive? UDC 系统稳定运行后， 可利用UDC对传统HLR 的N+1实时容灾保护方 案来支持对传统HLR到 UDC的平滑演进，且现 网话务不受影响。 ? 逐步按需进行 ? 原备份HLR可以重用为 HLR-S前端　Active for HLR #1 Stand-byHLR #3activeHLR #NactiveUDCActive for all IMS/EPC user Active for all HLR user…UDCN+1 HLR-S + 2 CUDB + # HSS-SLTE 演进阶段 1 C LTE 数据应用现有HLR HLR HLRExisting 2G/3G SubscriptionsCS Profiles PS Profiles PS ProfilesHSS FE (EPC) HLRHSS-SUDRHLR-SCUDBNew USIM Based SubscriptionsEPC Profiles现有用户数据无影响新增LTE数据用户? 在UDC 系统开通新增LTE 数据用户 (新 USIM 卡) ? 新增HSS-FE (EPC)LTE 演进阶段 2:VoLTE 逐用户签约（换卡，不换号）　UDR HSS-S HLR-SCUDBExisting 2G/3G Subscription Old IMSI MSISDNNew USIM Based Subscriptions New IMSIIncludes Tel URI IMPU based on MSISDNCS Profile PS ProfileIMSI Change OverCS ProfilesPS ProfilesEPC ProfilesIMS Profiles Includes MMTel, SR-VCC, ICS1. 2. 3.ICS flag Camel Profile for ICS Default setting for Line ID and mid-call services support? Migration of existing CS/PS subscriptions from HLR to UDC can be done:C On a per subscription basis (one subscription at a time), or C On a per HLR basis (all subscriptions of one HLR at a time)SUBSCRIPTIONS Migration? For smooth transition from old IMSI to new IMSI the proposal is to:C Migrate the old subscription to UDC first C Use the “IMSI change over” feature to transition from the old to the new subscription? If subscriptions are migrated one at a time, FNR nodes must be introduced to handle split of MSISDN and IMSI series between HLR and UDCVoLTE对网络的设备影响分析检查点哪些业务/功能可能会应用到？ 20XX CSFB, SMS over LTE, 20XX CSFB for emergency call, IMS voice, SR-VCC(ICS) trial 20XX VoLTE, SR-VCC(ICS), (IMS emergency call, SRVCC emergency call, SMS over IP) I/S-CSCF, DNS/ENUM, PCSCF/SBC/ATCF , MGC, EATF, MGW(ATGW), MTAS(SCC AS), MRFP MSC, MME, PDN GW, PCRF IMS HSS/SLF, HLR, SAE HSS哪些IMS网元可能会受影响？NoneI/S-CSCF, DNS/ENUM, PCSCF/SBC/ATCF , MGC, MGW(ATGW), MTAS(SCC AS), MRFP MSC, MME, PDN GW, PCRF IMS HSS/SLF, HLR, SAE HSS哪些CS/PS网元可能会受影响？ 哪些用户数据网元可能会受到影响？MSC, MME HLR, SAE HSSMpbnVoLTE MPBN ARCHITECTURECommon architecture QoS security vpn2GAll three applications tightly integrated reusing common functionsMSS3G Router Switch3GMobile BackhaulRouter LTEFWIMSSwitchLTELTEEPC Reuse infrastructure reuse applications and hardware platformMPBN - Ip infrastructurefor mobile core and multiservice integrationIMS standalone module behind a FW or Integrated VoLTE design into ROAMING CORPORATE NETWORKS NETWORKS common security architecture for FW, DNS, VPNMSCIMSDNSFWSASNRouterSwitchSECONDARY SITEMGWSwitch SwitchRouter RouterIP/MPLSSGSNMMEEPG (GGSN)CPGMPBN PRIMARY SITEINTERNET Fixed Router SwitchRouterSwitchSECONDARY SITESECONDARY SITEGSM WCDMA HSPA LTEWiFiFocus on availability, QoS, security for applications & Multi Service deploymentsPrinciple VoLTE ArchitectureS6a ShMMES1-MME S11 PCRF Gx RxHSS MMTel AS Cx ISCe-Uu eNodeB LTEIR.92S1-U S&P GWSGi P-CSCF Gm Mb IMS AGwMwI-/SCSCFTerm NWUtE-UTRANEPC, Evolved Packet CoreEPS, Evolved Packet System VoLTE, Voice over LTEIMSUntrusted Backbone Self containing module behind FWIMS standalone Module Vs. integrated VoLTETrusted Backbone Common Security ArchitectureVoLTE design based on: -Trusted Core Network -Common iDNS/eDNS -Common HSS/HLR data basesVoLTE网络可靠性方案议题六 ：VoLTE 网络可靠性方案CMSS域的可靠性方案（MSC pool） CIMS 域的可靠性方案 CEPC域的可靠性方案 C用户数据库可靠性方案 CIP骨干网的可靠性方案IMS容灾容灾的类别? 办卡级别的容灾，比如主要处理器是1+1或者 N+1 ? 逻辑节点间的容灾，比如软件资源，主要接口 ? 异地容灾，站点之间做redanduncy ? 网络容灾， 单节点故障时，可以确保业务不受 影响的倒换到备份节点上，需要MPBN能正确 的路由到redanduncy的节点上IMS Redundancy MODELSub - Area Site Redundancy异地异站点部署IMS Primary SiteSub -Area Node RedundancyIMS Secondary Site SUN Cluster HP Cluster节点内的软件资源，主要接口的冗余备份TSP TPIS BladeSub -Area IP Infrastructure RedundancySite SW Site SWFWFW 1Router RouterSLB SLB采用IP设施的一些功能去实现IMS容 灾，比如（静态路由和 VRRP, OSPF, session replication).Sub - Area Platform(HW ) RedundancyLink Level RedundancyInterface redundancyM S I X B S M G W M G C I S E R S I S M G W M G C M X B各硬件平台实现的办卡级的容灾 (TSP, IS, CPP…).DIAMETE R RADIUS SIPTSP01 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25IS BladeSUN Server容灾方案-案例之一站点A 站点B站点A的CSCF宕机后， 站点A的SBG能通过IMS防火墙和IP骨 干网接入到站点B的CSCF。EPC robustnessSGSN-MME pool2/3G access SGSN SGSN SGSN GGSN GGSN GGSN GW GW GGSN 2/3G access SGSN SGSN-MME SGSN-MME SGSN SGSN SGSN-MME2/3G access SGSN SGSN SGSNSGSN-MME池，在实现了资源池组的同时，有效的提供了网络级容灾EPC RESILIENCE所有EPC 节点都: ? 非常高的Service availability. ? 非常高的节点内部的failures resilience :C 过载保护 C 内部 redundancy C 接口 redundancy C 恢复机制?VoLTE 与一般的PS业务相比，对resilience的要求高很多，随着技术的 发展，未来会有更多的功能来确保VoLTE的 resilience。Network resilience? ? ? 对于单点或者站点故障，异地容灾和restoration procedures是保证 service availability 的关键技术点。 SGSN-MME 可以组池 S/PGW和PCRF可以通过静态配置，实现异地容灾用户数据库容灾-UDCCUDB System and Node ComponentsCUDB系统与节点组件alancers AP Gatewayocessing ase ata StorageUDC architecture resilienceUDC架构的可靠性前端机池组（Front End pool）HLR-S 1... HLR-S NHSS FE 1... HSS FE N? ?FE Pool可以规划为支持1个或多个FE故障而 不影响话务 负荷分担配置：池组内所有的FE在正常状 态下都可以处理话务C C 改善话务高峰期的系统响应 所有设备在一开始就投入运行MasterSubscriber data DS-1 Subscriber data DS-2MasterSubscriber data DS-1MasterSubscriber data DS-1 Subscriber data DS-2 Subscriber data DS-3MasterSubscriber data DS-2 Subscriber data DS-3 Subscriber data DS-4CUDB容灾功能（CUDB redundancy） ? 每个用户的数据都在不同CUDB节点中有2 个(1+1)或3个(1+1+1)备份 ? 永久或临时性的用户数据在不同CUDB节 点之间被自动备份 ? 如果一个CUDB节点退出服务，CUDB系统 会重新指定新的主数据存储单元。Subscriber data DS-3 Subscriber data DS-4Subscriber data DS-4CUDB-1CUDB-2CUDB-3网络容灾-MPBN网络容灾以及部署概念? PDN Gateway ? Serving Gateway ? Media Resource System (BGF/IM-MGw and MRFP)PDN&serving? ?Gw配置多个PDN GW同时服务于一个APN，以实现PDN GW容灾 (DNS config of APN) 在所有的PDN GW里定义Internet和IMS的APN， 并允许重选相同的节 点作为SGwNetwork level RedundancyS1 serving area overlapPrimary SiteEmergency APNP-CSCF P-CSCF P-CSCFPrimary SiteP-CSCF P-CSCFSGWPDN GWEmergency APNIMS APN Internet APNPCRFSGWPDN GWIMS APN Internet APNEPGEPGPooledMMEMMEi-DNS e-DNSMRSGeo redHSS HSSMRSi-DNS e-DNSVoLTE端到端Qos议题起：VoLTE 端到端QoSC主要概念 C关键KPI的简介MMTel over LTE Voice LatencyMMTEL OVER LTE VOICE LATENCY EXPECTED TO BE BETTER THAN WCDMA & GSM (200-220 ms)MMTel over LTEEPS BearersEPS Bearer Service ArchitectureMMTel over LTEEPS Bearers3GPP predefined QCI ValuesMMTel Media mapping to QCIsMMTel over LTEE2E QoSDedicated EPS Bearer EstablishmentMMTel over LTEE2E QoSDedicated EPS Bearer EstablishmentMMTel over LTEE2E QoSTransport Network QoSAccess QoS Aware/Unaware terminals & Emergency call supportMMTel over LTEIMS / Service Layer MMTel Appl. ProprietarySIPRequest / Grant Access QoS Feedback on Loss of Access QoS Exception Handling for Emergency / Priority CallsP-CSCF Rx PCRF Gx GGSN / PDN-GWAccess LayerTerminal Based Cross-Layer Interface Required to Enable ... 1. ... Local SIP Preconditions (T. Indicates once Access QoS Available) 2. ... Rel-9 Emergency Solution (T. Connects to Emergency APN)Only Need NW-init QoSTerminal(2G/3G/LTE)3GPP Bearer ProtocolsHigh level KPI 介绍商用案例分享Volte is happening nowKorEa VoLTE LaunchAs of 4th, Jan. ‘13Service VoLTE Service Timing RCS Service Timing Interoperation VoLTE between Korea Operators Aug. &#39;12LGU+ Aug. &#39;12SKT Oct. &#39;12KT26 , Dec., ‘12th26 , Dec., ‘12th26 , Dec., ‘12th? KCC established the association for Interoperation with Korea 3 operators : Start from Aug. 2012. ? TTA is on going the specification for VoLTE Interoperation between K-operators. - Expected TTA specification: H1, 2013 - Expected Interoperable service : H2, 2013 (after the TTA specification is fixed)- KCC: - TTA:Korea Communicaions Commission Korea Telecommunications Technology Association? Korea Operators(LGU+, SKT, KT) RCS Service Launching RCS UE C iOS UE: Not provided yet. C Android UE: Provided as a RCS Joyn Application of Korea 3 operators (from 26th, Dec. ’12)Volte subscribers(end of 2012)1. SKT: ~1,000,000 2. LGU+: ~500,000 3. KT: ~100,000Why VOLTE?1. High-definition Call Service (HD Voice/Video) Unmatched voice quality using wider frequency bandwidthover LTE network compare to conventional narrowband voice qualityA frequency bandwidth of ?VoLTE: 50-7000hertz ?2G/3G: 200-3,400hertzSource: SKT2. A Fast Call Setup TimeUp to 20 times faster than 3G voice calls setup time. Takes only 0.25-2.5 sec.3. Rich Communications Suite(RCS)An All-IP based integrated communication service. RCS allows voice and video calls, short messages, chat and data transfer simultaneously4. MPDN(Multiple Packet Distribution Network) Seamless service usage by utilizing Multiple IP technologySource: LGU+which enables video call or MMS even in WiFi zone or LTE data off situationWhat pushes operators to act nowRecovering niche revenues lost to OTTCoverage off loadService EnrichmentInteroperability and reachability are the operator’s key assetsvolte terminalsavailability todayAugust 2012 Metro pcs launched LG Connect 4G August & Oct 2012 KoreaSamsung Galaxy S3LG OPTIMUS LTE 2Galaxy S3Optimus LTE2Galaxy Note 2Optimus GOptimus View 2Vega R3Pls refer to VCC VoLTE UE database for the latest infoSource: Ericsson internal as Q3 2012CategoryKorEa 3G/4G LTE Network VendorsEntity LGU+ SKT KTBTS/NodeB - Ericsson-LG (Capital area) - SAMSUNG (Province) - Ericsson-LG (Capital Area) - SAMSUNG (Province) - Ericsson-LG (MSC, mCA) - Hansol (mCA) - No CDMA entity - Ericsson (Capital Area) - SAMSUNG - NSN - Ericsson-LG (Capital Area) - SAMSUNG - Ericsson-LG (Province area) - SAMSUNG (Capital Area) - Ericsson-LG - SAMSUNG (Capital Area) - Ericsson-LG (Province area) - SAMSUNG (Capital Area) - Ericsson-LG - SAMSUNG (Capital Area) - Ericsson (Daegu/Busan) - SAMSUNG (Capital Area) - NSN (Gwangju, a part of Capital) - Ericsson-LG - SAMSUNG (Capital Area) - Ericsson-LG (Capital Area. Daejeon) - SAMSUNG - Ericsson-LG (Capital Area) - SAMSUNG - Ericsson-LG (Capital Area) - SAMSUNG (Province area) - Ericsson-LG (Capital Area) - SAMSUNG - Ericsson (Daegu/Busan) - SAMSUNG : Capital Area - NSN : Gwangju - SAMSUNG BCS/RNC MSC SGSN /GGSN eNB3G Network4G LTE NetworkEPCLTE NetworksEricsson-LG Ericsson-LG37%SAMSUNGNSNSAMSUNG47% 31% Ericsson-LG 22%NSN48%Ericsson-LG Ericsson-LGSAMSUNG29%NSN34%31%NSN NSN30%22%
VOLTE端到端掉话分析指导_计算机硬件及网络_IT/计算机_专业资料。VOLTE端到端的...一步计划:对该原因值及其他原因值进行进一步分析,找出共性问题,提出合理解决方案...VoLTE 是全 IP 条件下端到端语音解决方案,涉及终端、无线、PS、IMS、CS 各技术域,旨在替代电路域话音。采用 VoLTE 语音解决方案,对终端域、无线域 和核心网有...中国移动VoLTE无线质量问题端到端优化经验及案例_互联网_IT/计算机_专业资料。中国移动 VoLTE 无线质量问题端到端优化经验及案 例
通信人必点?U 学...基于VOLTE端到端系统拓扑图生成方法的研究和实现_电脑基础知识_IT/计算机_专业...试验等 包括 2G/3G/WLAN 等相关方案及问题解决 包括 ONU、OLT 等,有线宽带...3.3 VoLTE 呼叫时延优化方案 针对 VoLTE 呼叫时延的主要影响要素,通过端到端全程全网分析,特别是在现网无线侧、 EPC 侧和 IMS 侧的全方位优化,有效缩短了呼叫...MOS 值的影响因素 MOS 值的直接影响因素为:端到端时延、抖动、丢包; VoLTE 端到端时延可以分解为:UE 语音编/解码时延、空口传输时延、核心网的处理时延、传输...下面我们根据这种情况给出具体的,使用信令平台的核对办法。针对网优平台给出的 ...【解决措施】第 12 页共 23 页 VoLTE 端到端业务质量分析 大唐移动通信设备有限...区别于传统基于 CS 域(电路 域)的语音解决方案,VoLTE 基于 PS 域(分组域) ,基于 IP 端到端连接的它具 有更大的带宽, 更快的连接时间, 更高的频谱利用率...2 投诉问题解决方案 2.1 注册问题 VoLTE终端开机后IMS/VOLTE/HD图标不出现,...它是架构在 LTE 网络上、全 IP 条件下、基于 IMS Server 的端到端语音方案,...VoLTE优化指导手册_解决方案_计划/解决方案_实用文档。VOLTE VoLTE 优化指导手册 ...RF 性能是“基础” 、Volte 语音质量是“重点” 、端到端定位是“难点” 。...
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