WCDMA軟交換核心網(wǎng)絡(luò)介紹

1、WCDMA 軟交換核心網(wǎng)絡(luò)介紹 前言l WCDMA版本從R99演進到R4之后網(wǎng)絡(luò)中會增加什么樣的功能實體請看本課程23 課程目標(biāo)l 了解R4中新增的功能實體的功能以 及新增的協(xié)議接口l 了解R4 中典型的呼叫流程 您將能夠課程內(nèi)容從R99到R4T45SS7網(wǎng)AUC VLRPSTN/ISDN IP 網(wǎng)BSS UTRAN VLR TDM ATMSignalingWAP 網(wǎng)關(guān)E1/STM-1E1/STM-1E1/STM-1E1/STM-1E1/STM-1E1/STM-1/STM-4E1E1E1GMSC VMSC VMSCGMLCHLR SCP SGSN 3G R99協(xié)議組網(wǎng)3G R4 協(xié)議組網(wǎng) SM

2、S-C SCP MAP CAP MAP MAP GMLC/SMLC HLR/EIR SS7網(wǎng) SIGTRAN GMSC server BICC MAP H.248 VMSC Server RANAP PSTN / ISDN TDM/G.711 UTRAN BSSAP AAL2 MGW MGW TDM/G.711 GSM / R99 PLMN BSS TDM RTP(AAL2/AMR IP (ATM BackBone IP 網(wǎng)絡(luò) 6 3GR5 體系結(jié)構(gòu) Alternative Access Network Applications & Services * SCP R-SGW GGSN Othe

3、r PLMN SGSN CAP Gn Gp TE R MT Um ERAN CSCF Legacy mobile signaling Network Mh HSS * Gr EIR Gf SGSN Gn Iu 1 MGW Iu 2 Nb Mc MSC server Gc Gi Cx Ms CSCF Mw Mm Multimedia IP Networks THIS IS MRF Gi T-SGW * Mr MRF Gi GGSN Mg MGCF Mc Gi MGW Mc Iu-ps Iu TE R 1 MT Uu UTRAN PSTN/ Legacy/External Iu = Iucs (R

4、TP, AAL2 Iu 2 Nc = Iu (RANAP GMSC server MAP T-SGW * MAP Applications & Services * HSS * Mh R-SGW * * those elements are duplicated for figure layout purpose only, they belong to the same logical element in the reference model Signalling Interface Signalling and Data Transfer Interface 7 R99 R4 R 4

5、核心網(wǎng)絡(luò)結(jié)構(gòu) SCP CAP Over TDM TUP/ISUP TDM HLR MAP Over TDM SCP CAP Over TDM/IP HLR MAP Over TDM/IP MSC MSC MSC Server H.248 TUP/ISUP/BICC MSC Server H.248 C S-M G W TDM/ATM/IP C S-M G W RAN RAN RAN RAN RAN RAN R99 注 R99與R4的分組域無變化 R4 圖中未畫出 8 R4 本地網(wǎng)組網(wǎng)模式 MSC Server GMSC Server BICC M3UA/SCTP H.248 H.248 RAN

6、AP SG ISUP IP Backbone MG MGW STP MGW UTRAN MGW UTRAN PSTN 9 R4 分組長途網(wǎng) TMSC Server BICC TMSC Server MSC Server MSC Server IP Backbone H.248 RANAP H.248 RANAP 本地網(wǎng) 1 MGW 本地網(wǎng) N UTRAN MGW UTRAN 10 R4信令網(wǎng)u MSCSERVER和MGW之間的H.248信令使用IP傳輸u其他信令MAP可重用SS7信令網(wǎng)與SCP SG有內(nèi)置和獨立兩種方式獨立S G使用M3U A/S T C P/I P1112R4 R4 增強功能

7、TrFOu TFO 與TrFO 的區(qū)別F TFO通過帶內(nèi)信令建立免編解碼器的連接用于監(jiān)視TFO消息中的信令建立后完全不需要編解碼器每經(jīng)過一次編解碼會降低話音質(zhì)量能減少話音的傳輸時延F 節(jié)省網(wǎng)絡(luò)設(shè)備功率采用TFO/TrFO時節(jié)省網(wǎng)絡(luò)設(shè)備功率新的業(yè)務(wù)生成機制是3G R4網(wǎng)絡(luò)的特色n3G網(wǎng)絡(luò)定義的是業(yè)務(wù)能力SCP除提供傳統(tǒng)智能業(yè)務(wù)以外還提供OSA開放業(yè)務(wù)接口供第三方定制和開發(fā)各種新業(yè)務(wù)SCP1314ATM/IP coreAPP Server SCP Soft Switch GSM/WCDMA switchSTPMGW PSTN MGW業(yè)務(wù)管理業(yè)務(wù)控制核心交換邊緣接入向NGN 演進u靈活的組網(wǎng)方式 可

8、與城域網(wǎng)進行融合可擴展性承載面CS-MGW可分別擴展u u可管理性承載 面CS-MGW分散設(shè)置在邊緣城市R4控制與承載相分分離15R4 IP 承載分析 uIP 分組統(tǒng)計復(fù)用的優(yōu)勢 分組承載網(wǎng)絡(luò) 音服務(wù)質(zhì)量 減少語音編解碼的次數(shù) 提高了語 節(jié)省了建網(wǎng)成本 網(wǎng)絡(luò)帶寬的高效利用 網(wǎng)絡(luò)配置 擴容和維護簡單 可大幅降低運營成本 減少建設(shè)投入 骨干網(wǎng)和數(shù)據(jù)網(wǎng)絡(luò)可以共享 實現(xiàn)多網(wǎng)融合 提供綜合業(yè)務(wù) 16 3GR4 設(shè)備優(yōu)勢分析 大容量 務(wù) 高處理能力 n業(yè)務(wù)個性化多樣化和開放的業(yè)務(wù)平臺將產(chǎn)生越來越多的業(yè) 也對設(shè)備提出了更高處理能力需求 提出了大容 n分級化建設(shè)和組網(wǎng)使得設(shè)備越來越集中設(shè)置 量建設(shè)的需求 n核

9、心網(wǎng)絡(luò)分組化使信令傳輸和內(nèi)部交換帶寬得到了質(zhì)的提 高 n控制和承載分離和網(wǎng)絡(luò)構(gòu)件化 使得各個業(yè)務(wù)實體分工明 17 確并且可以分別針對不同的技術(shù)方向發(fā)展 雙歸屬 R DUAL HOMING OSA iManager 3rd party . SCP LCS Soft Switch 1 Soft Switch 2 SoftSwitch Legacy GSM/GPRS IP Backbone Radio Access Network ar ul BSS l l / Ce NS R MGW NetEngine MGW PSTN/ISDN Signalling Channel for Soft Switc

10、h 1 Signalling Channel for Soft Switch 2 Bearer Channel Heart beat Network management center 18 本章小結(jié) l 本章主要介紹了從R99演進到R4 R5后 新增的各類功能 實體 以及R4/R5的優(yōu)勢 19 課程內(nèi)容 從 R99 到 R4 R5的演進 新增組件介紹 新增協(xié)議和概念介紹 典型呼叫流程介紹 T 20 3G R4 MSC SREVER功能n繼承了R99MSC的所有電路域控制面功能由MGW以多種承載方式實現(xiàn)n集成了R99VLR功能n對電路域基本業(yè)務(wù)及補充業(yè)務(wù)涉及的MGW中承載終端及媒體流的控制n

11、與其他MSCserver間通過BICC信令實現(xiàn)承載無關(guān)的局間呼叫控制并可要求MGW主動上報其終端特性21n由GMSC的呼叫控制和移動控制組成n具有查詢位置信息的功能網(wǎng)絡(luò)如不能查詢該用戶所屬的HLR然后將呼叫轉(zhuǎn)接到目前登記的MSCserver中n 支持BICC與ISUP的協(xié)議互通223GR4 MGW功能n MGW是3GR4核心網(wǎng)的用戶承載面的網(wǎng)關(guān)交換設(shè)備UTRAN/BSS PSTN/ISDN是Iu接口以及分組網(wǎng)媒體流的終結(jié)點n MGW可以支持媒體轉(zhuǎn)換如GSM/UMTS各類語音編解碼器IWF會議橋n MGW可通過H.248信令n 支持電路域業(yè)務(wù)在多種傳輸媒介或基于RTP/UDP/IP上的實現(xiàn)233

12、GR4 SG功能n 信令網(wǎng)關(guān)在基于TDM的窄帶SS7信令網(wǎng)絡(luò)與基于IP 的寬帶信令網(wǎng)絡(luò)之間n SGW在物理實現(xiàn)上可與(GMSCserver或MGW合一24本章小結(jié)l本章對R4中的新增組件的功能進行了介紹25課程內(nèi)容從R99到R4T26n(GMSCserver與MGW間的標(biāo)準(zhǔn)接口 及針對3GPP特殊需求的H.248擴展事務(wù)及包定義IP/ATM/TDM 包括終端屬性底層傳輸機制將 采用MTP3B 或SCTP為其提供協(xié)議承載27終端1RTP業(yè)務(wù)流 *終端2TDM信道終端3TDM信道終端4上下文1TDM信道*終端5TDM信道上下文2媒體網(wǎng)關(guān)28H.248協(xié)議基本概念n在R4網(wǎng)絡(luò)連接模型中主要通過“上下

13、文”和“終端”2個抽象概念來描述一個終端由一系列特征屬性來描述每個終端都擁有一個唯一的標(biāo)識符(TerminationID具有緊密關(guān)聯(lián)的終端屬性被封裝在“描述符”內(nèi)n上下文(Context:一個上下文是一組終端的關(guān)聯(lián)的抽象則該上下文描述了終端間的拓?fù)潢P(guān)系29呼叫控制接口(Nc接口n(GMSCserver間的標(biāo)準(zhǔn)接口為UMTS/GSM 的窄帶電路域業(yè)務(wù)提供獨立于用戶面承載技術(shù)及控制面信令傳輸技術(shù)的局間呼叫控制能力n BICC新增的“應(yīng)用信息傳輸”NcArrayCodec30n前向承載建立方式下 Setup在發(fā)起承載Setup前n后向承載建立方式下 Setup后繼局發(fā)起后向承載Setup的依據(jù)是前向

14、IAM消息中攜帶的承載地址與標(biāo)識信息前向承載與后向承載建立31n MGW間的Nb接口用來在R4核心網(wǎng)內(nèi)承載用戶業(yè)務(wù)流釋放與維護IP或TDM作為物理承載方式AAL2SAR-傳輸網(wǎng)絡(luò)用戶面業(yè)務(wù)流的協(xié)議棧為SSCS(I.366.1/AAL2(I.363.2/ATMn對于IP承載承載控制信令的協(xié)議棧為Q.1970/SCTP/IPn Nb UP協(xié)議在承載面MGW間提供業(yè)務(wù)數(shù)據(jù)流的組幀速率匹配及定時控制等功能支持壓縮語音32物理承載協(xié)議類型IP ATM TDMIu接口RANAP SCCP/MTP3B/SSCF-NNI/SSCOP/AAL5/ATM-Nc接口BICC STC(Q.2150.3/SCTP/IP

15、 STC(Q.2150.1/MTP3B/SSCF-NNI/SSCOP/AAL5/ATMSTC(Q.2150.1/MTP3/MTP2/MTP1Mc接口H.248STC(Q.2150.3/SCTP/IP STC(Q.2150.1/MTP3B/ SSCF-NNI/SSCOP/AAL5/ATM-C/D/E/F/G接口MAP TCAP/SCCP/M3UA/SCTP/IP-TCAP/SCCP/MTP3/MTP2/MTP1CAP TCAP/SCCP/M3UA/SCTP/IP -TCAP/SCCP/MTP3/MTP2/MTP1R4主要信令接口承載及協(xié)議棧33本章小結(jié)l本章對R4中出現(xiàn)的新協(xié)議接口功能進行了介紹

16、34課程內(nèi)容從R99到R4T3536BSC-ORNC-OHLR-OMSC SERVER-OMGW-OMGW-GRANAPMAPBICCBSSAP H.248AAL2TDMRTP(AAL2/AMR IP (ATM BackBoneGMSC SERVERMGW-TBSC-TRNC-TRTP(AAL2/AMRIP (ATM BackBoneRANAPTDMBSSAPAAL2H.248H.248MAP運營商A運營商B假定一個移動用戶O從運營商A的網(wǎng)絡(luò)呼叫移動用戶T其中RNC-O MSCSERVER-O 對應(yīng)RNC-T等其它設(shè)備為運營商B的網(wǎng)絡(luò)設(shè)備R4呼叫流程舉例37MS-ORNC/BSC-OMSC s

17、erver-OMGW-O GMSC server.CM_Service_Req(Initial UEIMSI/TMSI,CM_Serv_TypeAuth_Req(DTAuth_Rsp(DTCKSN,RAND,AUTN/CKSN,RANDRES/SRESSecurity_Mode_Control / Cipher_Mode_SettingIK,EK,IPA,EA/Kc,CipherModeSecurity_Mode_Complete / Cipher_Mode_Complete Chosen IPA,EA/Chosen,CipherModeSetup(DTCalled Party BCD,Sup

18、ported Codecs,PLMN_BC, Facility,LLC,HLCCall Proceeding(DTPLMN_BC,Progress_Ind,FacilityQuery VLR For Access Data Query VLR For Subscription Check38MSC server-OMGW-OGMSC server.Number and Route Analysis = Addr of GMSC (DPC or IPIAMCIC,Called Address = Called MSISDN,Calling Address,Continuity,USI BICC_

19、DataAction Indicatior=Forward,BNC Char, Bearer Tunnel Infor,HLRNumber Analysis = MSISDN.MSC server-TMAP_SRI_ReqMAP_PRN_ReqMAP_PRN_RspMSISDN,ISDN_BCIMSI,GSM_BCMSRNMSRNMAP_SRI_Rsp MGW selection andIncoming Side Bearer Estb maybe here39GMSC server .MSC server-TNumber and Route Analysis= Addr of MSC-TMG

20、W-TRNC/BSC-TMS_TIAM CIC,Called Address = MSRN, Calling Address,Continuity,USIBICC_DataAction Indicatior=Forward,BNC Char, Bearer Tunnel InfoNumber Analysis =Local MSRN Query VLR =IMSI/TMSI Page_Req IMSI/TMSIPage_Rsp CM_ServType,IMSISubscription CheckPage Chan ReqImm assgn Page resp40Auth_Req(DTAuth_

21、Rsp(DTCKSN,RAND,AUTN/CKSN,RANDRES/SRESSecurity_Mode_Control / Cipher_Mode_SettingIK,EK,IPA,EA/Kc,CipherModeSecurity_Mode_Complete / Cipher_Mode_Complete Chosen IPA,EA/Chosen,CipherModeGMSC serverMSC sever-TRNC/BSC-TMS_TMGW-TCalled Party BCD, Codecs,PLMN_BC, Facility,LLC,HLC,Calling Party BCDSetup (D

22、TCall Confirm (DTPLMN_BC,Facility,Supported CodecsMGW selection.Query VLR For Access Data41TerminationID = ?,ContextID=?, BNC-id = ?,BIWF_Addr=?, BC_Char/Codec, BNC_Char ,NotifyRequested, UPmode, UPVersion, Interface = Nb,InitDirect =Incoming,Cut_Through_Direction = Both (Codec selected when TrFOGMS

23、C server MSC sever-T RNC/BSC-T MS-TMGW-T ADD.req ADD.rspTerminationID = T1,ContextID=C1,BNC-ID = bearer1,BIWF_Addr = MGW-TAPM BICC_Data(BNC-ID = bearer1,BIWF_Addr = MGW-T Prepare Bearer MGW-G ADD.req TerminationID = ?,ContextID=?, BNC-id = bearer1 ,BIWF_Addr=MGW-T , BC_Char/Codec, BNC_Char ,NotifyRe

24、quested, UPmode, UPVersion, Interface = Nb,InitDirect =Incoming,Cut_Through_Direction = BothMGW selection .Establish Bearer (Outcoming Side(Network Side 42GMSC server MSC sever-TRNC/BSC-T MS-TMGW-T MGW-G ADD.rsp.TerminationID = T2,ContextID=C2ERQ(Q.2630 for AAL2 /Request(Q.1970 for RTPECF(Q.2630 for

25、 AAL2 /Accepted(Q.1970 for RTPADD.req TerminationID = ?,ContextID=C2, BNC-id = ?,BIWF_Addr=?,BC_Char/ Codec, BNC_Char ,NotifyRequested, UPmode, UPVersion, Interface = Nb,InitDirect =Incoming,Cut_Through_Direction = Both (Codec recieved when TrFOADD.rspTerminationID = T3,BNC-ID = bearer3,BIWF_Addr =

26、MGW-GPrepare Bearer(Incoming Side43GMSC server .MS-O RNC/BSC-O MSC server-O MGW-O APMBICC_Data(BNC-ID = bearer3,BIWF_Addr = MGW-G MGW-GADD.req TerminationID = ?,ContextID=?, BNC-id = bearer3 ,BIWF_Addr=MGW-G , BNC_Char ,Codec= Selected Codec/BC_Char = Derive from ISDN_BC, NotifyRequested, UPmode=SMp

27、SDU, UPVersion = 0x01, Interface = Nb,InitDirect =Outcoming, Cut_Through_Direction = BothADD.rsp TerminationID = T4,ContextID=C3Establish Bearer MGW selection(Network Side 44GMSC server .MS-O RNC-OMGW-O MGW-G(Access Side ADD.req TerminationID = ?, ContextID=C3, BNC-id = ?,BIWF_Addr=?, BNC_Char ,Noti

28、fyNotRequested,UPmode, UPVersion, Interface = Iu, InitDirect =Incoming,Cut_Through_Direction = Forward (SendOnly,BC_Char = Derived from BC or Codec infor from Setup (speech/Codec = Selected Codec (TrFO,PLMN_BC = BC infor from Setup (Circuit Data ADD.rspTerminationID = T5,BNC-ID = bearer4,BIWF_Addr =

29、 MGW-O RAB ASSIGNMENT REQRAB-ID = RAB1, RAB Param ( Traffic Class,MBR,GBR,DeliveryOrder, MaxSDUSize,SDU Format,SDU RBER etc. UPMode = SMpSDU, UPversion,TLR = MGW-O , BindingID = bearer4TCh Assignment TCh Assignment CompletePrepare Bearer45GMSC server .MS-O RNC-O MSC server-O MGW-O MGW-GERQ(Q.2630 fo

30、r AAL2 ECF(Q.2630 for AAL2 RAB ASSIGNMENT COMPLIuUP-InitRFCI, SubFlowSizeInfo, IPTI, etcIuUP-Init AckRFCI, SubFlowSizeInfo, IPTI, etcIu/Nb UP-InitIu/Nb UP-Init Continuity46GMSC server .MS-O BSC-O MSC server-OMGW-O MGW-G (Access Side ADD.req TerminationID =T5 (TrunckNumber , ContextID=C3,NotifyNotReq

31、uested, Cut_Through_Direction = Forward (SendOnly,BS_Char = Derived from BC infor from Setup (speech ,PLMN_BC = BC infor from Setup, (Circuit Data,GSM channel Coding = Derived from BC infor from Setup ADD.rspASSIGNMENT REQTCh Assignment TCh Assignment Complete Reserve Circuit A i/f Circuit SelectTDM

32、 seizure ASSIGNMENT COMPL CICContinuityGSM 的移動呼叫移動847MGW-O MGW-G MSC server-T MGW-T GMSC serverMSC server-O .RFCI, SubFlowSizeInfo, IPTI, etcIu/Nb UP-InitIu/Nb UP-InitNotify.reqTerminationID =T3,ObservedEvent= Bearer ConnectedNotify.rspIu/Nb UP-InitRFCI, SubFlowSizeInfo, IPTI, etcIu/Nb UP-InitNotify

33、.reqTerminationID =T1,ObservedEvent= Bearer ConnectedNotify.rspContinuity Continuity .移動呼叫移動948GMSC server MSC sever-T RNC-T MS-TMGW-T ADD.req ADD.rspTerminationID = T6, ContextID=C1,BNC-ID = bearer5, BIWF_Addr = MGW-TPrepare Bearer MGW-G . TerminationID = ?, ContextID=C3, BNC-id = ?,BIWF_Addr=?, BNC_Char ,Not