UMTSPS核心网络知识讲座.ppt

1、UMTS PS核心网络知识讲座,2,PS域移动性管理状态,UMTS PS核心网络结构,内 容 提 纲,PS域信息流程,PS域路由和数据发送,UMTS PS域和GPRS的关系,3,Iu-CS,Iu-CS,Iu-PS,Iu-PS,Iub,RNC,Node B,Node B,RNS,Iur,Iub,RNC,Node B,Node B,RNS,VLR MSC,A,GMSC,Abis,BSC,BTS,BTS,BSS,PSTN,PSTN,EIR,F,HLR,AUC,D,C,H,Abis,BSC,BTS,BTS,BSS,other PLMN,Gi,WCDMA基本网络结构,PS域,4,PS域移动性管理状态,U

2、MTS PS核心网络结构,内 容 提 纲,PS域信息流程,PS域路由和数据发送,UMTS PS域和GPRS的关系,5,Uu,MS,UTRAN,3G-SGSN,3G-GGSN,Eg:Ip,PPP,Eg:IP,PPP,Iu-PS,Gn,PS域用户面结构(1),6,SNDCP,SNDCP,GTP-U,Um,MS,BSS,3G-SGSN,3G-GGSN,Eg:Ip,PPP,Eg:IP,PPP,NETWORK SERVICE,L1bis,BSSGP,MAC,L1,RLC,Gb,Gn,PS域用户面结构(2),GTP-U,7,L1,GMM/SM /SMS,PS域控制面结构(1),RRC,Uu,MS,UTRA

3、N,3G-SGSN,3G-GGSN,MAC,RLC,Iu-PS,Gn,RANAP,GTP-C,GTP-C,RRC,RANAP,L1,MAC,RLC,GMM/SM /SMS,8,PS域控制面结构(2),MS,BSS,3G-SGSN,3G-GGSN,Gb,Gn,GTP-C,GTP-C,NETWORK SERVICE,L1bis,BSSGP,GMM/SM /SMS,MAC,L1,RLC,GMM/SM /SMS,Um,9,Gn、Gp控制面结构,GGSN/SGSN,SGSN,Gn、Gp,GTP-C,L2,L1,TCP/UDP,IP,GTP-C,L2,L1,TCP/UDP,IP,Gn/Gp接口： L1/L

4、2及UDP/IP层的功 能与传输平台的相同; GTP-C协议：负责传送路径管理、隧道管理、移动性管理和位置管理等相关信令消息，用于对传送用户数据的隧道进行控制。,10,PS域Gr、Gf、Gd接口协议栈结构,HLR、SMS-GMSC、SMS-IWMSC、EIR,3G-SGSN,Gr、Gd、Gf,TCAP,MTP2,L1,SCCP,MTP3,MAP,TCAP,MTP2,L1,SCCP,MTP3,MAP,实现鉴权、登记、移动性管理以及短消息传送等功能。,11,GGSN-HLR 接口协议栈结构（1）,3G-GGSN,HLR,Gc,TCAP,MTP2,L1,SCCP,MTP3,MAP,TCAP,MTP2

5、,L1,SCCP,MTP3,MAP,GGSN与HLR相连的方式一：选择Gc接口与HLR相连，Gc接口所使用的协议栈与Gr/Gf/Gd接口的相同，也是采用MAP协议来实现移动性管理相关功能。,12,SGSN,GGSN,Gn,TCAP,MTP2,L1,SCCP,MTP3,MAP,TCAP,MTP2,L1,SCCP,MTP3,MAP,GTP-C,L2,L1,TCP/UDP,IP,GTP-C,L2,L1,TCP/UDP,IP,HLR,Gr,GGSN与HLR相连的方式二：通过具有GTP-MAP转换功能的GSN与HLR相连，GGSN利用GTP协议与转换实体通信，而转换实体再通过MAP协议与HLR通信。,G

6、GSN-HLR 接口协议栈结构（2）,13,SGSN-MSC/VLR接口的协议栈结构,MSC/VLR,3G-SGSN,Gs,BSSAP+,MTP2,L1,SCCP,MTP3,BSSAP+,MTP2,L1,SCCP,MTP3,Gs接口为可选接口，只用于传送信令,采用BSSAP+协议实现联合的移动性管理、寻呼等功能，也是利用SS7进行传送。,14,RNC,GMM,SM,MAP,DB,DNS,LLC,CGF,信令,Gb,Gd,Gs,Gr,Ga,Gn,GTP消息,BSS,Gs,SMS,SNDCP,SSF,CAP,RLC,RRC,MS,数据和信令,数据,GGSN,SGSN软件结构,Iu-PS,协议转换,

7、协议转换,协议转换,15,Gn, GTP消息,IP透明方式,IP非透明方式,IP，带 FA功能,IP-M 代理,PPP 接入,DHCP 互连,路由器/ 防火墙,PDN,X.25,X.75,GGSN软件结构,16,SGSN,GGSN,SGSN,SGSN,SGSN,SGSN,SGSN,GGSN,GGSN,Internet X.25/X.75,RSS BSS,GGSN,IP 地址 SS7编号 外部网络 地址,IMSI P-TMSI PDP地址,PLMN,PS域网元的地址、编号和寻址（1）,PDN,17,GSN的IP,地址,地址类型,地址长度,地址,2,比特,6,比特,最多为,1,6,字节,表,8,G

8、SN,地址结构的相应参数,地址类型,地址长度,地址,0,4,Ipv4,地址,1,16,Ipv6,地址,18,GGSN associated with:,X.121 address,IP address SAP,Gi,GGSN associated with:,IP address,Gi,MS,RAB ID,X.25 /,X.75,IP,NSAPI-2,RB Identity,RB Identity,RB Identity,RB Identity,RAB ID,RAB ID,RAB ID,RNC,3G-SGSN,Access Stratum,NSAPI-1,NSAPI-1,NSAPI-1,X.1

9、21 address SAP,NSAPI-1,NSAPI-2,NSAPI-2,NSAPI-2,PS域网元的地址、编号和寻址（2）,UTRAN,SGSN,GGSN,19,内 容 提 纲,PS域移动性管理状态,UMTS PS核心网络结构,PS域信息流程,PS域路由和数据发送,UMTS PS域和GPRS的关系,20,PMM- DETACHED,PS Attach,PS Signaling,Connection Release,PS Signaling,Connection Establish,PS Detach,PMM-,CONNECTED,PMM-IDLE,Detach,PS Attach Rej

10、ect,RAU Reject,MS MM States,SM-ACTIVE or,INACTIVE,SM-ACTIVE or,INACTIVE,移动性管理状态模型,PMM-,DETACHED,PS Detach,PMM-,CONNECTED,Serving RNC,relocation,3G-SGSN MM States,SM-ACTIVE or,INACTIVE,SM-ACTIVE or,INACTIVE,Detach,PS Attach Reject,RAU Reject,PS Attach,PS Signaling,Connection Establish,PS Signaling,Co

11、nnection Release,PMM-IDLE,21,移动性管理状态描述,分组移动性管理分离（PMM-DETACHED）状态： MS和SGSN上下文中没有有效的MS位置或路由信息，MS不可及。 分组移动性管理空闲（PMM-IDLE）状态： MS和SGSN中的MM上下文已建立，可在RA的层次上对MS进行管理，对MS进行寻呼等。 分组移动性管理连接（PMM-CONNECTED）状态：MS的位置可由SRNC跟踪，可在小区的层次上对MS进行移动性管理。,MM上下文：分组移动性管理的三种状态在不同事件的触 发下互相转换,每种状态对应了一种确定的功能级以及一系列相关信息,这些状态及相关信息就组成了MM

12、上下文；一个用户（或IMSI)对应唯一的一个MM上下文，MM上下文存在于MS、SGSN中。,MS,UTRAN,NEW SGSN,Old SGSN,NEW MSC,GGSN,HLR,Old MSC,6d. Cancel Location Ack,6c. Cancel Location,6b. Update Location,6g. Update Location Ack,6f. Insert Subscriber Data Ack,5d. Insert Subscriber Data,5c. Cancel Location Ack,5b. Cancel Location,3. Identity

13、Response,2. Identification Response,2. Identification Request,1. Attach Request,3. Identity Request,4. Authentication,5a. Update Location,6a. Location Update Request,6h. Location Update Accept,5f. Update Location Ack,5e. Insert Subscriber Data Ack,8. Attach Complete,7. Attach Accept,9. TMSI Realloca

14、tion Complete,移动台附着模型,6e. Insert Subscriber Data,23,3. IMSI Detach Indication,2. Delete PDP Context Response,1. Detach Request,2. Delete PDP Context Request,5. Detach Accept,4. GPRS Detach Indication,6. PS Signaling Connection Release,MS,BSS/UTRAN,SGSN,MSC/VLR,GGSN,分离模型MS发起,24,2. Delete PDP Context

15、Response,1. Detach Request,2. Delete PDP Context Request,5. Detach Accept,3. GPRS Detach Indication,6. PS Signaling Connection Release,MS,BSS/UTRAN,SGSN,MSC/VLR,GGSN,分离模型SGSN发起,25,3. Delete PDP Context Response,2. Detach Request,3. Delete PDP Context Request,5. Detach Accept,4. GPRS Detach Indicatio

16、n,7. PS Signaling Connection Release,MS,BSS/UTRAN,SGSN,MSC/VLR,GGSN,分离模型HLR发起,HLR,1. Cancel Location,6. Cancel Location Ack,路由区更新程序,MS,UTRAN,NEW SGSN,Old SGSN,NEW MSC,GGSN,HLR,Old MSC,11b. Cancel Location,11c. Cancel Location Ack,11d. Insert Subscriber Data,15. TMSI Reallocation Complete,11f. Update

17、 Location Ack,12. Location Update Accept,14. Routing Area Update Complete,13. Routing Area Update Accept,7. Cancel Location,7. Cancel Location Ack,5. Update PDP Context Response,5. Update PDP Context Request,6. Update Location,9. Update Location Ack,11a. Update Location,10. Location Update Request,2

18、. SGSN Context Response,3. Security Functions,2. SGSN Context Request,1. Routing Area Update Request,8. Insert Subscriber Data,8. Insert Subscriber Data Ack,11e. Insert Subscriber Data Ack,4. SGSN Context Ack,服务RNC切换过程,MS,Source RNC,Target RNC,GGSN,NEW SGSN,Old SGSN,3. Forward Relocation Request,4.

19、Relocation Request,2. Relocation Required,6. Relocation Command,5. Forward Relocation Response,4. Relocation Request Acknowledge,9. Relocation Detect,13. Relocation Complete,13. Forward Relocation Complete,10. RNTI Reallocation,12. RNTI Reallocation Complete,Establishment of Radio Access Bearers,15.

20、 Routing Area Update,11. Update PDP Context Request,14. Iu Release Command,14. Iu Release Complete,1. Decision to perform,SRNS relocation,7. Relocation Commit,8. Forwarding of data,11. Update PDP Context Response,2. Service Request,3. Security Functions,1. RRC Connection Request,1. RRC Connection Se

21、tup,6. Radio Access Bearer Assignment Response,5. Radio Bearer Setup,6. Radio Bearer Setup,Complete,MS,RNC,SGSN,HLR,MS发起业务请求程序,4. Radio Access Bearer Assignment Request,7. Uplink PDU,4. Service Request,5. Security Functions,3. RRC Connection Request,3. RRC Connection Setup,6. Radio Access Bearer Ass

22、ignment Response,6. Radio Bearer Setup,6. Radio Bearer Setup,Complete,MS,RNC,SGSN,HLR,网络侧发起的业务请求程序,6. Radio Access Bearer Assignment Request,2. Paging,2. Paging,1. Downlink PDU,7. Downlink PDU,8. Iu Release Command,8. Iu Release Complete,6. SRNS Context Acknowledge,7. Forward Packets,1. Intersystem

23、change decision,3. SRNS Context Request,4. SRNS Context Response,2. Routing Area Update Request,9. Routing Area Update Accept,10. Routing Area Update Complete,11. BSS Packet Flow Context Procedure,5. Security Functions,MS,BSS,SRNS,2G+3G-SGSN,SGSN内的系统间转换：UMTS转入GPRS,4. Routing Area Update Accept,7. RA

24、B Assignment Request,5. Routing Area Update Complete,6. Service Request,1. Intersystem change decision,2. Routing Area Update Request,3. Security Functions,MS,BSS,SRNS,2G+3G-SGSN,7. RAB Assignment Response,SGSN内的系统间转换： GPRS转入UMTS,MS,BSS,SRNS,NEW 2G-SGSN,Old 3G-SGSN,GGSN,HLR,17. Routeing Area Update

25、Complete,16. Routing Area Update Accept,12. Cancel Location,12. Cancel Location Ack,10. Update PDP Context Response,10. Update PDP Context Request,11. Update GPRS Location,15. Update GPRS Location Ack,4. SRNS Context Request,18. BSS Packet Flow Context Procedure,5. SGSN Context Response,6. Security

26、Functions,3. SGSN Context Request,2. Routeing Area Update Request,14. Insert Subscriber Data,14. Insert Subscriber Data Ack,7. SGSN Context Ack,8. SRNS Context Ack,9a. Forward Packets,9b. Forward Packets,13. Iu Release Command,4. SRNS Context Reponse,1. Intersystem change decision,SGSN间的系统间转换：UMTS转入

27、GPRS,13. Iu Release Complete,SGSN间的系统转换：GPRS 转入UMTS,MS,BSS,SRNS,NEW 3G-SGSN,Old 2G-SGSN,GGSN,HLR,15. Routeing Area Update Complete,14. Routeing Area Update Accept,11. Cancel Location,11. Cancel Location Ack,9. Update PDP Context Response,9. Update PDP Context Request,10. Update GPRS Location,13. Upd

28、ate GPRS Location Ack,4. SGSN Context Response,5. Security Functions,3. SGSN Context Request,2. Routeing Area Update Request,12. Insert Subscriber Data,12. Insert Subscriber Data Ack,6. RAB Assignment Request,8. Forward Packets,1. Intersystem change decision,6. RAB Assignment Response,7. SGSN Contex

29、t Ack,Radio Bearer Setup,34,PS域移动性管理状态,UMTS PS核心网络结构,PS域信息流程,PS域路由和数据发送,UMTS PS域和GPRS的关系,内 容 提 纲,35,Deactivate PDP Context,or,MM state change to IDLE,or PMM-DETACHED,Activate PDP Context,INACTIVE,ACTIVE,PDP状态有两种： 未激活：对于该PDP地址没有激活的数据业务，相应的PDP上下文中没有路由或映射信息。此时，MS的位置更新不会引起PDP上下文的更新。 激活：对于该PDP地址有激活的数据业务，

30、相应的PDP上下文中包含了路由或映射信息。用户的MM状态为空闲或连接状态时，PDP状态才可能进入激活状态。,一个用户所申请的UMTS PS业务涉及一个或多个外部PDN（如Internet、X.25等），则在其UMTS PS签约数据中就将包括一个或多个与这些PDN对应的PDP地址。每个PDP地址对应有一个PDP上下文。每个PDP上下文由PDP状态及相关信息来描述，存在于MS、SGSN、GGSN中。一个用户的所有PDP上下文都与该用户唯一的一个MM上下文相关联。,PDP状态模型,IMSI MSISDN SGSN Number SGSN Address Subscribed Charging Cha

31、racteristics Trace Reference Trace Type Initiating OMC Identity SMS Parameters MS PS Purged for GPRS MNRG GGSNlist,PDP Context Identifier PDP Type PDP Address Access Point Name QoS Profile Subscribed VPLMN Address Allowed GPRS-CSI,HLR签约的用户分组信息,基本分组信息,PDP上下文,IMSI MM State P-TMSI P-TMSI Signature IMEI

32、 MSISDN Routeing Area Cell Identity Cell Identity Age Service Area Code Service Area Code Age VLR Number New SGSN Address Authentication Triplets Authentication Vectors Kc CKSN Ciphering algorithm CK,PDP Context Identifier PDP State PDP Type PDP Address APN Subscribed APN in Use NSAPI TI TEID for Gn

33、/Gp TEID for Iu GGSN Address in Use VPLMN Address Allowed QoS Profile Subscribed QoS Profile Requested QoS Profile Negotiated Radio Priority Packet Flow Id Send NPDU Number Receive NPDU Number GTP-SND GTP-SNU RLC-SND RLC-SNU Charging Id,SGSN存储的用户分组信息,MM上下文等基本信息,每个MM对应的PDP上下文,IK KSI Radio Access Clas

34、smark SGSN Classmark DRX Parameters MNRG NGAF PPF Subscribed Charging Characteristics Trace Reference Trace Type Trigger Id Initiating OMC Identity OMC Identity SMS Parameters Recovery Radio Priority SMS GPRSCSI,SGSN 在MS处于PMM-IDLE, PMM-CONNECTED 状态时保持该MS的MM上下文和PDP上下文。,38,IMSI NSAPI MSISDN PDP Type P

35、DP Address Dynamic Address APN in Use TEID TFT QoS Profile Negotiated SGSN Address,GGSN存储的的用户分组信息,PDP上下文,MNRG Recovery GTPSND GTPSNU Charging Id Charging Characteristics Trace Reference Trace Type Trigger Id Initiating OMC Identity OMC Identity,GGSN只保持处于激活状态的PDP上下文。,39,IMSI MM State P-TMSI P-TMSI Si

36、gnature Routeing Area Cell Identity Kc CKSN/ KSI Ciphering algorithm CK CK Next IK IK Next Classmark DRX Parameters Radio Priority SMS,MS存储的分组信息,PDP Type PDP Address PDP State Dynamic Address Allowed APN Requested NSAPI TI QoS Profile Requested QoS Profile Negotiated TFT Radio Priority Packet Flow I

37、d Send N-PDU Number Receive N-PDU Number RLC-SND RLC-SNU,MM和PDP上下文,MM和PDP上下文MS在处于PMM-DETACHED, PMM-IDLE, 和PMM-CONNECTED状态时应保持MM上下文和PDP上下文。,40,IMSI Trace Reference Trace Type Trigger Id Initiating OMC Identity OMC Identity NSAPI TEID GGSN Address in Use QoS Profile Negotiated GTP-SND GTPSNU RLCSND RL

38、CSNU,RNC存储的的用户分组信息,RNC上下文,RNC 保持处于PMM-CONNECTED状态的MS的RNC上下文以及RNC RAB上下文。RNC上下文中主要包含与CN相关的信息，RNC RAB上下文主要包含激活的RAB的相关信息。,41,3. Invoke Trace,4. Create PDP Context Request,2. Radio Access Bearer Setup,1.Activate PDP Context Request,6. Activate PDP Context Accept,MS,UTRAN,3G-SGSN,3G-GGSN,MS发起的PDP上下文激活,5.

39、 Create PDP Context Reponse,42,MS,SGSN,HLR,GGSN,网络发起的PDP上下文激活,3. PDU Notification Request,1. PDP PDU,2. Send Routeing Info for GPRS,2. Send Routeing Info for GPRS Ack,4. Request PDP Context Activation,5. PDP Context Activation procedure,3. PDU Notification Response,43,4. Radio Access Bearer Modifica

40、tion,MS,UTRAN,SGSN,GGSN,MS发起的PDP上下文修改,3. Update PDP Context Response,1. Modify PDP Context Request,2. Update PDP Context Request,5. Modify PDP Context Accept,44,5. Radio Access Bearer Modification,MS,UTRAN,SGSN,GGSN,SGSN发起的PDP上下文修改,2. Update PDP Context Reponse,3. Modify PDP Context Request,6. Invok

41、e Trace,1. Update PDP Context Request,4. Modify PDP Context Accept,45,4. Radio Access Bearer Modification,MS,UTRAN,SGSN,GGSN,GGSN发起的PDP上下文修改,5. Update PDP Context Reponse,2. Modify PDP Context Request,1. Update PDP Context Request,3. Modify PDP Context Accept,46,MS,UTRAN,SGSN,GGSN,MS发起的PDP上下文去激活,1.

42、Deactivate PDP Context Request,2. Delete PDP Context Request,3. Delete PDP Context Response,4. Deactivate PDP Context Accept,5. Radio Access Bearer Release,47,MS,UTRAN,SGSN,GGSN,SGSN发起的PDP上下文去激活,3. Deactivate PDP Context Request,1. Delete PDP Context Request,2. Delete PDP Context Response,4. Deactiv

43、ate PDP Context Accept,5. Radio Access Bearer Release,48,MS,UTRAN,SGSN,GGSN,GGSN发起的PDP上下文去激活,2. Deactivate PDP Context Request,1. Delete PDP Context Request,4. Delete PDP Context Response,3. Deactivate PDP Context Accept,5. Radio Access Bearer Release,49,MS,UTRAN,SGSN,GGSN,MS向外部数据网发送数据,PDN,1. 无线接入段,3. 外部网络接入段,2. 核心网络段,用户的PDP PDU用PDCP进行封装，其中