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1、移动软交换和移动分组域承载网技术分析,议题,移动通信网络的演进及网络整体架构介绍3G UMTS系统及业务对IP承载网络的要求3G IP承载网需要考虑的关键技术移动通讯网络向全IP融合的路线图,议题,移动通信网络的演进及网络整体架构介绍3G UMTS系统及业务对IP承载网络的要求3G IP承载网需要考虑的关键技术移动通讯网络向全IP融合的路线图,Circuit/SignalingGateway,FeatureServer(s),Mobility Manager,2G/2.5G,2G,IN Services,NetworkFeatureServers,3G,Data+Packet Voice,Va
2、lue Chain,MSC Circuit Switch1,GGSN/PDSN,BSC,Voice(Legacy Features),Call Agent,Internet Core,IP Core,CircuitNetwork,IP RAN,移动通信网络的演进及系统结构,RAN,Core,Packet,TDM,RNC/BSC,Wireless Generations,First GenerationAnalog wireless 1GAMPS-Advanced Mobile Phone Service 北美TACS-Total Access Communications System 英国
3、中国NMT-Nordic Mobile Telephone 北欧Second Generation 2G and 2.5GDigital wireless 2GGSM-Global System for Mobile Communications 欧 900 1800 1900CDMA(ANSI-95)-Code Division Multiple Access 美 亚太 800 1900TDMA(ANSI-136)-Time Division Multiple Access 北美Digital Wireless 2.5GGSM with GPRS General Packet Radio S
4、erviceCDMA1x RTTThird Generation 3GDigital wirelessUMTS-Universal Mobile Telecommunications System(3GPP)WCDMA-Wideband Code Division Multiple Access,radio for UMTSCDMA2000-Code Division Multiple Access(3GPP2),Voice,Voice+Data,IMS,Mobile Wireless Evolution,2G,GSMCkt Swt Data(2.4-9.6 Kbps),cdmaOneT1A/
5、IS-95Ckt Swt Data(14.4 Kbps),TDMAT1A/IS-136,EDGEUp to 384 Kps,2.5 or 2G Enhancements,IS-136+Up to 64 Kbps,64 Kbps,144Kbps,cdma20001xRTT DVUp to 144 Kps,cdma20001xEV HDR DOUp to 2.4 Mbps,384Kbps,1 Mbps,cdma20001xTreme DVUp to 5 Mbps,cdma20003xRTTUp to 5 Mbps,IS-136 HS OutdoorUp to 384 Kps,WCDMA/UMTSU
6、p to 2 Mbps(Local)Up to 384 Kbps(Wide),IS-136 HS Indoor,2 Mbps,3G,GPRSUp to 171 Kbps,IMT-2000是第三代移动通信系统（3G）的统称第三代移动通信系统最早由国际电信联盟（ITU）1985年提 出，考虑到该系统将于2000年左右进入商用市场，工作的频段在2000MHz，且最高业务速率为2000Kbps，故于1996年正式更名为IMT-2000（International Mobile Telecommunication-2000）第三代移动通信系统是一种能提供多种类型、高质量多媒体业务，能实现全球无缝覆盖，具
7、有全球漫游能力，与固定网络相兼容，并以小型便携式终端在任何时候、任何地点进行任何种类通信的通信系统,3G发展概述,第三代移动通信标准化格局,3GPP R99网络参考模型,3GPP R4 网络参考模型,UMTS Release 4,Signalling and/or bearer,Signalling,*those elements are the same but are duplicated for readability of the figure,MSC server,GMSC server,Iu-cs1=Bearer(RTP,AAL2),Iu-cs2=Signalling(RANAP)
8、,Iu-ps,Gi,Uu,Gn,Gp,UTRAN,Gr,Other PLMN,SGSN,GGSN,GGSN,Apps&Services*,HLR*,SCP,PDN/Internet,Mc,Mc,MGW,Nb,Nc,Iu-cs1,Iu-cs2,PSTN/Legacy external nw,T-SGW,MGW,GRX,Gc,Apps&Services*,SCP,HLR*,UMTS Release 5,Signalling and/or bearer,Signalling,*those elements are the same but are duplicated for readability
9、 of the figure,GMSC server,Iu-ps,Gi,Uu,Gn,Gp,UTRAN,Gr,Other PLMN,SGSN,GGSN,GGSN,Apps&Services*,HSS*,SCP,Multimedia IP/Internet,Mc,Mc,MGW,Nb,Nc,Iu-cs1,Iu-cs2,PSTN/Legacy external nw,T-SGW,MGW,GRX,Gc,CSCF,MRF,MGCF,MGW,T-SGW,CSCF,Mw,Mm,Gi,Cx,Mg,Mc,Gi,WCDMA协议版本的演进,继承2G（GSM和GPRS）所有的业务和功能核心网分CS电路域和PS分组域接入
10、网引入WCDMA UTRAN核心网和接入网之间的Iu接口基于ATM,继承WCDMA R99所有的业务和功能电路域结构的变化：控制和承载相分离，MSC可以用合一或SERVER、MGW分离结构实现电路域引入分组话音，支持多种传输技术：TDM，ATM，IP,继承WCDMA R4所有的业务和功能核心网增加IM（IP多媒体域）RAN向IP方向发展增强的IP QoS能力，支持端到端的IP多媒体业务,2000,2001,2002,规范完成时间,商业运营的3G系统的组成部分,3G 无线接入网络系统及终端:由 IMT-2000 所定义空中接口技术WCDMA,CDM2000,TD-SCDMA.UE,BTS/Nod
11、eB,BSC/RNC.3G 核心网络系统电路域和分组域语音数据多媒体呼叫的处理，现有网络互联，信令交互分组网关，信令网关，媒体网关，MSC/GMSC Server,基于软交换的呼叫控制系统3G RAN 和 CN的分组传送网络3G RAN网络的分组传送网络;3G 核心网络的IP承载网络Network&Service Enhancement:MPLS,SLA/QoS,VPN,TE,IPv6,Security.3G service&control platform and application3G特色的各种应用和服务，结合现有移动运营商的各种服务网络的应用统一的服务控制平台：服务选择、业务控制、移
12、动性实现、资费手段,议题,移动通信网络的演进及网络整体架构介绍3G UMTS系统及业务对IP承载网络的要求3G IP承载网需要考虑的关键技术移动通讯网络向全IP融合的路线图,3G UMTS系统及业务对IP承载网络的要求,3G End to End SLA/QoS DefinitionsCS Domain Requirements to IP BackboneDelay Budget for a Mobile Phone Call3G Signaling RequirementsPS Domain Requirements to IP BackboneTraffic Model SetupBan
13、dwidth Calculation and Capacity PlanningHigh Availability and Security Requirements,3G业务对QoS的要求,对于实时业务与非实时业务其容量特征的描述方法有明显的不同。需要用不同的模型参数来描述这种容量要求,3G End to End SLA/QoS Definitions,3GPP Conversational/Real-time Data Delay Requirements,3GPP TS 22.105 V4.3.0,UK PSTNcall,trans-global call ormobile to lan
14、dline call,mobile tomobile call,international call with satellite hop,The Effects of Absolute Delay(from ITU-T Recommendation G.114),What does BT achieve?,Grade Of Service,Class of Service,Customer Care/Ops,Customer Care Call Centre App,CDRs,Provisioning,Enterprise VOIP,VM Internet Access,NTP(Enterp
15、rise),Desktop to Internal Services,Intl ClearingHouses(Roamers),Network Alarms,SPsVSS2,3G Core:LI,CallCentre VOIP,DesktopInternet,EnterpriseRAS,Enterprise Video Streaming,Enterprise Video Telephony,DNS,DHCP for the Enterprise,DesktopEmail,MIS,BillingSystems,SP Billing Transfers,RetailShop VOIP,Servi
16、ceStatistics,ServiceConfiguration,Product Alarms,Product Statistics,Product Configuration,ProductCDRs,High,Medium,Low,Conversational,Streaming,Interactive,Background,2.5G PS,DNS,DHCP for 2.5G and 3G,IP-Based Service Traffic from INs,2.5G/3G Corporate RAS,IAS,WAP,SMS-IP,E-Topup,SMS-C,Signalling,Video
17、 Telephony,VideoStreaming,Mob.Video Conferencing,PPG,UM Streaming,VME,LES,Corp.RAS Last mile,3G Voice,SI IVR,Retail Shop E-topup,2G Voice,IN call Set-up over IP,MessagingProducts,Inter ProductConnectivity,2G Data,3G PS,Audio Streaming,Enterprise Audio Streaming,3G PS Domain Application and Service l
18、evel mapping table,IP/PDP 和分组域的 QoS:基本的差分服务,IP/PDP 和分组域的QoS:QOS的高级综合服务,PS Domain：IP/PDP QoS,3G 流量模型的建立,IP承载网节点、链路选择和设计的依据来自3G业务模型，并需要配合话务模型，进行容量规划。CS Domain3G CS业务与软交换语音业务类似，以连接用户和用户为主，属于承载型的“扁平业务”。按照实时业务计算容量带宽要求，分本地通话率和出局通话率计算带宽；PS Domain分组域流量主要是SGSN和GGSN之间Gn接口的流量，当用户漫游时，有些业务需要漫游地SGSN与本地GGSN建立隧道承载流
19、量，因此流量呈树状网状结构；分组域对承载网的带宽需求主要针对Gn接口和Gi接口，按照非实时业务计算带宽需求。,High Availability Requirements,WANResilience:The target is to have sub-second fail-over times across the network.Backbone should be protected against link and node failures.LANThe target is to have sub-second fail-over times across the network.A
20、t the sites resilience can be achieved by using duplicated LAN interfaces and redundant multilayer LAN switches.(Full redundancy connect to Cisco SWITCH)The behavior of interconnection of MGW/MSS integrated switch and access switchL2 resilience:Which layer 2 protocol is responsible for achieving sub
21、-second convergence?MSTP/RSTPThe site router should have protected link(port channel)between them.L3 resilience:Access switch need to support logical redundancy features,such as HSRP/VRRP;From MGW/MSS to Access Switch default gateway,static route is prefered.,Fully Redundant PoP design(with“non-rout
22、ing”hosts),Provider,Provider Edge,MSC,MGW,MGW,GGSN,Customer Edge,Recommended,Fully Redundant PoP design(with“routing”CE),Provider Edge,Customer Edge,MGW,MGW,MGW,MGW,Host,OSPF relationship,MGW,Billing,CorporateVPN,PSTN,SS7,MSC,165,V,Mobile Core Network,Signaling Gateway,Voice Gateway,SGSN,GGSN,骨干网,Se
23、curity Requirements,3G业务网络安全，包括3G CS、3G PS业务系统和用户业务的安全 IP基础网络安全，IP承载网基础网络（设备）能够有效防范各种非法攻击和病毒冲击，保证网络持续稳定运行，性能没有劣化。,议题,移动通信网络的演进及网络整体架构介绍3G UMTS系统及业务对IP承载网络的要求3G IP承载网需要考虑的关键技术移动通讯网络向全IP融合的路线图,IP承载网的关键技术,如何考虑2.5G/3G的IP承载网的部署MPLS VPN Architecture for Future 3G NetworkIP Backbone Tight-SLA Deployment流量工程 Traffic engineeringHigh available and Fast convergence骨干网的QoS技术选择与实践IPv6,Mobile Security and NMS.,议题,移动通信网络的演进及网络整体架构介绍3G UMTS系统及业务对IP承载网络的要求3G IP承载网需要考虑的关键技术移动通讯网络向全IP融合的路线图,
