VoLTE交付关键技术及优化交流

HUAWEITECHNOLOGIESCO.,LTD.Slidetitle:40-47ptSlidesubtitle:26-30ptColor::whiteCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialVoLTE交付关键技术及优化交流HUAWEITECHNOLOGIESCO.,LTD.Huaweiproprietary.Nospreadwithoutpermission.Page2Slidetitle:32-35ptColor:R153G0B0CorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialSlidetext:20-22ptBulletslevel2-5:18ptColor:BlackCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialToprightcornerforfield-mark,customerorpartnerlogotypes.----------------Thefollowingninegroupsofcolorsareanexampleofhowourdesigncolorscanbeused,pleasetakenotethatyoushouldonlyuseonedesigncolorgroupperslide.Forspecificusagedetails,refertothe“TypesettingStandard”.内容VoLTEE2E架构和基本概念1VoLTE优化的方法和思路2VoLTE优化案例介绍3HUAWEITECHNOLOGIESCO.,LTD.Huaweiproprietary.Nospreadwithoutpermission.Page3Slidetitle:32-35ptColor:R153G0B0CorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialSlidetext:20-22ptBulletslevel2-5:18ptColor:BlackCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialToprightcornerforfield-mark,customerorpartnerlogotypes.----------------Thefollowingninegroupsofcolorsareanexampleofhowourdesigncolorscanbeused,pleasetakenotethatyoushouldonlyuseonedesigncolorgroupperslide.Forspecificusagedetails,refertothe“TypesettingStandard”.VoLTE的网络架构关键新部署网元：SCCAS：支持语音连续性ATCF/AGCW（集成在SBC）：信令与业务的本地锚定关键网元改造：MSC:改造支持eSRVCC功能IMSCore：移动终端呼叫控制、路由SDM：HLR、SAE-HSS、IMS-HSS融合PCRF：支持VoLTE的QoS控制EPC：支持IMSAPN接入、QoS保证、eSRVCC切换等HUAWEITECHNOLOGIESCO.,LTD.Huaweiproprietary.Nospreadwithoutpermission.Page4Slidetitle:32-35ptColor:R153G0B0CorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialSlidetext:20-22ptBulletslevel2-5:18ptColor:BlackCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialToprightcornerforfield-mark,customerorpartnerlogotypes.----------------Thefollowingninegroupsofcolorsareanexampleofhowourdesigncolorscanbeused,pleasetakenotethatyoushouldonlyuseonedesigncolorgroupperslide.Forspecificusagedetails,refertothe“TypesettingStandard”.VoLTE呼叫基本流程HLR/HSS1.VoLTE终端开机，自动进行LTE附着2.触发IMSPDN连接的建立，获得IMSIP地址并建立信令缺省承载3.通过IMS信令承载注册到IMS网络4.VoLTE终端发起向另一VoLTE终端的高清语音或视频呼叫.同时由P-CSCF通过Rx口发起语音专有承载建立。5.IMS网络对被叫进行寻址呼叫，同步发起被叫的语音承载建立，被叫振铃6.被叫摘机，呼叫成功，双方进行通话基本流程EPCMMESAE-PGWASIMSCSCFLTELTESAE-PGWHUAWEITECHNOLOGIESCO.,LTD.Huaweiproprietary.Nospreadwithoutpermission.Page5Slidetitle:32-35ptColor:R153G0B0CorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialSlidetext:20-22ptBulletslevel2-5:18ptColor:BlackCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialToprightcornerforfield-mark,customerorpartnerlogotypes.----------------Thefollowingninegroupsofcolorsareanexampleofhowourdesigncolorscanbeused,pleasetakenotethatyoushouldonlyuseonedesigncolorgroupperslide.Forspecificusagedetails,refertothe“TypesettingStandard”.主叫:LTE被叫:LTE主叫:UMTS被叫:GSML-L:优选WB-AMRof23.85kbpsL-U:WB-AMRof12.65kbpsispreferredL-G:使用NB-AMR编码不同无线制式间编码及方案建议UMG主/被叫:LTE主/被叫:LTE主/被叫:GSML-L:优选WB-AMRof23.85kbpsL-G:使用NB-AMR编码June,2013•LTE-LTE下的呼叫，编码协商在SBC(会话边界控制器)进行，基于主、被叫支持的编码方式。•LTE-CS下的呼叫，编码协商在UMG(通用媒体网关)进行，基于主、被叫支持的编码方式。SBC•初期建议采用23.85kbps的语音编码，构建VoLTE语音跨代提升的品牌;容量过载场景采用宽带23.85kbps和12.65kbps自适应网内不同无线制式间编码建议网间不同无线制式间编码建议HUAWEITECHNOLOGIESCO.,LTD.Huaweiproprietary.Nospreadwithoutpermission.Page6Slidetitle:32-35ptColor:R153G0B0CorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialSlidetext:20-22ptBulletslevel2-5:18ptColor:BlackCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialToprightcornerforfield-mark,customerorpartnerlogotypes.----------------Thefollowingninegroupsofcolorsareanexampleofhowourdesigncolorscanbeused,pleasetakenotethatyoushouldonlyuseonedesigncolorgroupperslide.Forspecificusagedetails,refertothe“TypesettingStandard”.VoLTE无线相关特性级策略部署特性功能功能简介华为建议说明VOIPLTE网络进行语音业务开启VoLTE语音基本功能，必须开启eSRVCC语音业务切换到GSM网络，保证语音业务的连续性开启VoLTE语音连续性覆盖保障基本功能，必须开启RoHC空口压缩语音包IP包头，减小语音包大小，提升系统容量和覆盖开启外场测试终端支持ROHC,后续商用终端需要兼容性测试TTIbundling上行数据包在4个子帧重复发送，增强3dB上行覆盖不开启当前子帧配比DL:UL为3:1，不支持TTLbundling特性（该特性要求上行子帧数大于或等于下行子帧）半静态调度通话期间使用固定的调度信息，节省PDCCH资源，提升系统容量。在高铁、频谱1.4M系统带宽、混合业务（语音数据并发）及紧急呼叫场景不生效.待终端验证后开启该特性对终端和设备配合要求高，需要完成网络和设备的兼容性测试，待验证通过后全网开启DRX不影响语音质量的情况下，最大程度保证UE的省电能力。基于QCI进行配置开启HUAWEITECHNOLOGIESCO.,LTD.Huaweiproprietary.Nospreadwithoutpermission.Page7Slidetitle:32-35ptColor:R153G0B0CorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialSlidetext:20-22ptBulletslevel2-5:18ptColor:BlackCorporateFont:FrutigerNextLTMediumFonttobeusedbycustomersandpartners:ArialToprightcornerforfield-mark,customerorpartnerlogotypes.----------------Thefollowingninegroupsofcolorsareanexampleofhowourdesigncolorscanbeused,pleasetakenotethatyoushouldonlyuseonedesigncolorgroupperslide.Forspecificusagedetails,refertothe“TypesettingStandard”.LTEVoIP特性介绍•无线为VoLTE业务建立QCI1和QCI5承载(QCI1和QCI5具有高优先级)，eNodeB优先进行调度，保障其带宽、时延等，从而为高质量的语音通话提供保证•语音编码由核心网和终端协商确定UE在Attach时与DefaultAPN建立数据默认承载QCI9Attach完成后，UE与IMSAPN建立QCI5的默认承载，用于传