单击以编辑母版标题样式,单击以编辑母版文本样式,第二级,第三级,第四级,第五级,1,XXXX3G技术培训,3G网络接口及协议,集团公司研发中心,3G系列培训教材之,3G网络接口及协议集团公司研发中心3G系列培训教材之,内容,R4接口协议概述,BICC协议简介,Mc接口H.248协议简介,3G呼叫流程示例,3G信令网络的演进,内容R4接口协议概述,3GPP R4的接口和协议,ISUP,ISUP,RANAP,BICC,CAP,H.248,RTP/RTCP,RANAP,RANAP,ISUP,MAP,3GPP R4的接口和协议ISUPISUPRANAPBICC,R4信令组网-RANAP透传,R4信令组网-RANAP透传,R4信令组网-ISUP透传,R4信令组网-ISUP透传,内容,R4接口协议概述,BICC协议简介,Mc接口H.248协议简介,3G呼叫流程示例,3G信令网络的演进,内容R4接口协议概述,3GPP R4的接口和协议,ISUP,ISUP,RANAP,BICC,RANAP,RANAP,ISUP,3GPP R4的接口和协议ISUPISUPRANAPBICC,BICC协议的,出现,定位:,BICC协议使各种分组网络都可以提供PSTN/ISDN的全套业务,包括所有补充业务。,优势:,承载无关:突破PSTN网络承载能力的限制;加上与信令传送独立的能力,使其呼叫控制不受承载类型限制。,呼叫控制:继承PSTN网络中的ISUP,协议的控制方式,在运营级的质量要求方面具有更强的伸缩性。,BICC协议的出现定位:,BICC的承载分离示意图,BICC的承载分离示意图,Serving Node(SN),ISN:,提供了和非,BICC网络或终端设备互通的接口,相当于端局,GSN,:,提供了两个,BICC网络之间关口的,相当于关口局,TSN:,提供,ISN或GSN之间,转接功能,相当于汇接局,Outgoing,procedures,Incoming,procedures,BCF,Call Service,Function(CSF),BIWF,SERVING NODE(SN),Bearer Control Signalling,Bearer Control Signalling,Bearer,Call Control,Signalling,(BICC protocol or,other signalling,system),Call Control,Signalling,(BICC protocol or,other signalling,system),Call Bearer Control(CBC),signalling,Serving Node(SN)ISN:提供了和非BIC,SN功能实体的种类,接口业务节点(ISN=Interface Serving Node),功能实体,位于SCN网和BICC网之间,其包含CSF-N和BIWF,转接业务节点(TSN=Transit Serving Node),功能实体,位于BICC网内的两个SN之间,其包含CSF-T和BIWF,关口业务节点(GSN=Gateway Serving Node),功能实体,位于两个网络主域之间,其包含CSF-G和BIWF,SN功能实体的种类接口业务节点(ISN=Interface,Call Mediation Node,(CMN),CMN,和SN的区别是CMN不控制网关,SN要控制网关,Outgoing,procedures,Incoming,procedures,BCF,Call Service,Function(CSF),BIWF,CALL MEDIATION NODE(CMN),Bearer Control Signalling,Bearer Control Signalling,Bearer,Call Control,Signalling,(BICC,protocol),Call Control,Signalling,(BICC,protocol),Call Mediation Node(CMN)CMN和SN,BICC网络的模型,Call Control,Signalling,Bearer Control,Signalling,Signalling Transport Network,BCF-J,BCF-R,SWN-2,BCF-R,SWN-3,CSF-N,ISN-B,BCF-N,(z),Backbone,Network,Connection,Link,Backbone Network Connections,Network Bearer Connection(end to end),CSF-N,BCF-N,(v),ISN-A,Bearer,Inter-working,Function,(BIWF),BCF-R,SWN-1,CSF-T,BCF-T,(w),TSN-x,CSF-G,BCF-G,(x),GSN-x,CSF-G,BCF-G,(y),GSN-y,CSF-C,CMN-x,TE,TE,TE,TE,ACN-E,Joint Domain,Bearer Inter-working,Function(BIWF),Access Network,BCF-R,ACN-w,Other,service,supplier,networks,CSF-R,BCF-A,(a),Access Control,Signalling,Other,service,supplier,networks,Call&Bear Control,(CBC)Signalling,BICC网络的模型Call ControlBearer Co,BICC网络定义的呼叫业务功能,呼叫业务功能节点(CSF-N),实现窄带和BICC之间的互通,向对等的CSF传送呼叫特性,调用BCF-N实现窄带业务的传送,呼叫业务功能转接(CSF-T),建立和维护呼叫连接和承载连接,在对等CSF之间中继信令,调用BCF-T实现窄带业务的传送,呼叫业务功能关口(CSF-G),建立和维护呼叫连接和承载连接,在对等CSF之间中继信令,调用BCF-G实现窄带业务的传送,呼叫业务功能协调(CSF-C),提供呼叫协调和中介功能,用于中继信令和连接,不调用任何BCF功能,BICC网络定义的呼叫业务功能呼叫业务功能节点(CSF-N,BICC网络相关承载控制功能,承载控制功能节点(BCF-N),对应CSF-N,承载控制功能转接(BCF-T),对应CSF-T,承载控制功能关口(BCF-G),对应CSF-G,承载控制功能中继(BCF-R),承载控制和承载控制信令的中继,不对应CSF,BICC网络相关承载控制功能承载控制功能节点(BCF-N),BICC协议的模型,Signalling Transport Layer:,MTP3,用于,TDM,信令承载网,SCTP over IP,用于,IP,信令承载网络,MTP3B/,SSCOP,用于,ATM,网络,STC:Signalling Transport Converter,为上层,BICC协议,提供了统一的信令承载接口,BICC协议的模型Signalling Transport,BICC的完整网络模型,BICC的完整网络模型,BICC,承载建立方式的种类,前向承载建立方式(,Forward Bearer Setup),非隧道方式,(,No Tunnel case),快速,隧道方式,(Fast Tunnel,),延迟,隧道方式,(Delayed Forward Tunnel),后向承载建立方式(,Backward Bearer Setup),非隧道方式,(,No Tunnel Case),延迟隧道方式,(Delayed Backward Tunnel),隧道:,The BICC Bearer Control Tunnelling Protocol is a generic tunnelling mechanism for the purpose of tunnelling Bearer Control Protocols(BCP)over the horizontal BICC interface between CCUs and the vertical CBC interface between CCU and BCU.,BICC,承载控制隧道协议在,BICC,水平接口(两个呼叫控制实体间的接口)与垂直接口,CBC,(呼叫控制实体与承载控制实体间的接口)间建立一个隧道,传输承载控制信息。,BICC承载建立方式的种类前向承载建立方式(Forward,前向承载建立方式,前向承载建立方式,后向承载建立方式,后向承载建立方式,隧道(Tunnelling)的概念,隧道由,Q.1990进行描述,Bearer Control Messages(IPBCP)are sent embedded in BICC messages,CSF indicates to BCF if tunnelling is supported and if supported whether delayed or fast.BCF decides if tunnelling is used,Fast Tunnel:Tunnel data transferred in first IAM message,隧道(Tunnelling)的概念隧道由Q.1990进行描述,前向延迟隧道承载建立流程,前向延迟隧道,:,隧道信息(,Tunnel data),没有包含在IAM消息中传送到对端SX,而是在对端回,APM消息后,再通过单独的,APM,消息传送到对端局,前向延迟隧道承载建立流程前向延迟隧道:隧道信息(Tunnel,后向延迟隧道承载建立流程,后向延迟隧道,:,隧道信息(,Tunnel data),在对局送IAM,消息过来后,通过单独的,APM,消息传送到对端局,后向延迟隧道承载建立流程后向延迟隧道:隧道信息(Tunnel,The Supported Codec List is constructed and contains all the codecs,in priority order,that are offered for use in the call from the SN initiating codec negotiation.,Intermediate SN will,delete the codecs from the received Supported Codec List which it cannot support and is passed to next SN,Terminating SN selects the codec with highest priority in the received Supported Codec List that can be supported by it.This is selected codec.This is passed to previous SN.,Codec,协商流程,The Supported Codec List is co,带Codec协商的呼叫流程,后向承载建立过程,带Codec协商的呼叫流程后向承载建立过程,BICC呼叫释放过程,释放原则:谁发起承载建立,谁进行承载的释放,BICC呼叫释放过程释放原则:谁发起承载建立,谁进行承载的释,CIC-,用来标识两局之间属于同一呼叫的消息(,is used to identify signalling relation between peer BICC entities and associate all the PDUs to that relation.,),消息类型message type code,强制固定长度参数部分(,the mandatory fixed part),强制可变长度参数部分(,the