江蘇聯通SGSN培訓ppt課件

1、MotorolaWei Mingmingw22019motorola10215253BSSBTSBSCPCU PSTNISDNInternet,IntranetMSC/VLR GMSCHLR/AUCSGSNCGBGGGSNGPRS backboneOther PLMNSS7 SGSN function in GPRS network GPRS Standard Protocol InterfaceBSCPCU MSC/VLRCAMEL SCFHLR/AUCSGSNCGGGSNGPRS bakboneOther PLMNSS7GGSN SMSEIR GbGpGaGnGsGdGeGrGfGiInt

2、ernet 165Wap/MMS ATM交換子系統(tǒng) Gb接口處置子系統(tǒng)GTP-C處置子系統(tǒng) 數據轉發(fā)子系統(tǒng)計費子系統(tǒng) N7信令處置子系統(tǒng) 操作維護子系統(tǒng)時鐘子系統(tǒng)GSN/CGBSSOMC/LMTBITS/LINE1/2HLR/MSC SGSN Software Structure600mm2200mmPSM 0PSM 1PSM 2PSM 3 SGSN Hardware Structure0123456789101112131415161718UPIUUPIUUBIUUACUUBIUUACUUBSUUBSUUPIUUPIUUPWRUPWRUFCUUFCUURCUURCUUCDRUCDRUGFUU

3、GFUUALUUPWRUPWRFixed Configuration SGSN Hardware Structure 1. Switch Sub-rack UFCU realizes the interconnection between the basic subrack, the switch subrack and the expansion subrack.UGFU realizes the external interfaces of Gn/Gp and the transfer of user plane.0123456789101112131415161718UEPIUEPIUE

4、PIUEPIUEPIUEPIUBIUUACUUBIUUACUUFSUUFSUUCKIUCKIUPWRUPWRUGBIUGBIUGBIUGBIUSPUUSPUURCUURCUUOMUUOMUUGTPUGTPUALUUPWRUPWRFixed Configuration SGSN Hardware Structure 2. Basic Sub-rack Contains O&M boards: UOMURealize the clock extract with UCKI boardsContains service boards: UGBI/USPU/UGTP01234567891011

5、12131415161718UEPIUEPIUEPIUEPIUEPIUEPIUBIUUACUUBIUUACUUEPIUEPIUEPIUEPIUEPIUPWRUPWRUGBIUGBIUGBIUGBIUSPUUSPUURCUURCUUSPUUSPUUGBIUGBIUGBIUALUUPWRUPWRFixed Configuration SGSN Hardware Structure 3. Expanded Sub-rack Typical 2G expansion Subrack, 6+1 for UGBI, together with 2+2 USPUCabinet1Cabinet2UFCU/UP

6、IUPSMPSMPSMPSMPSMPSMFiber Fiber URCUURCUURCUUOMUURCUURCUURCUPSM SGSN Hardware Communication (1) Between subracksM/S-LINKP0P1P2P3P0P1P2P3ActiveUPIUStandbyUPIUM/S-LINKP0P1P2P3P0P1P2P3ActiveUBIUATM155StandbyUBIUATM155ActiveUBSUATM155StandbyUBSUATM155ActiveUBIUATM155StandbyUBIUATM155ActiveUFSUATM155Stan

7、dbyUFSUATM155PSM switching subrack PSM service subrack SGSN Hardware Communication (2) Fiber connectionUCKIUBIUUPIUUPIUUPIUPSM servicesubrackPSM servicesubrackPSM servicesubrack.External clock inputPSM switchingsubrackInternal clock busSTM-1STM-1STM-1 SGSN Hardware Communication (3) Clock SchemeSyst

8、em StructureSoftware StructureHardware StructureSGSN ConfigurationHardware ConfGb interfaceGr interfaceGn/Gp interfaceGa interfaceBasic Signaling FlowMaintenance and troubleshooting Basic Configuration： System: SET OFI SET SIGATTR/ADD N7OPC/ADD SCCPOPC Sub-racks: ADD SUBRACK Switch subrack Boards: T

9、he sub-board of UEEC/UAIC/USS7 could be added same time with front boards. The back board of UPIU/UEPI could be added with the front ones. Except the standby UGBI board (N+1 backup) need to be added separately, other standby boards (1+1backup) will be added together with the active one. UPIU back of

10、 UGFU need to configure the port property: SET UPIU_PORT Gb interface protocol stackRelayNSGTP-UApplicationIPSNDCPLLCRLCMACGSM RFSNDCPLLCBSSGPL1bisRLCMACGSM RFBSSGPL1bisRelayL2L1IPL2L1IPGTP-UIPUmGbGnGiMSBSSSGSNGGSNNSUDPUDPBSSGPRelayGMM/SM/SMSLLCRLCMACGSM RFGMM/SM/SMSLLCBSSGPL1bisUmGbMSBSSSGSNNetwork

11、ServiceRLCMACGSM RFL1bisNetworkServiceUser PlaneControl Plane Gb interface protocol stackGbBTSBSCAbisBSSSGSNL1PHYNSBSSGPLLCGMM/SMNSFRBSSGPLLCSNDCPPhysical layerFRNSBSSGPPCUPhysical layerFRLLCSNDCP UEPIUFEUNSBSSGPUGBIGMM USPU Configuration Concepts: BC: the bearer channel of FR corresponding to the t

12、imeslot group of E1/T1, the timeslot distribution must be consistent with PCU side. PVC: the BC contains some PVCs distinguished by DLCI, the DLCI value must be consistent with PCU side. NSVC: virtual link provided by NS layer for BSSGP layer, the NSVC value must be consistent with PCU side. NSE: NS

13、E manages a group of NS-VCs, and corresponding a group of cells. BVC: BSSGP virtual connection is used in the BSSGP layer, classified to Sig BVC, PTP BVC and PTM BVC. One PTP BVC corresponds to one cell.NSE0NSE1BSS0BSS1460010001010001460010001010002460010001010003460010002019001460010002019002460010

14、0020190031234UGB IUGB IUGB IU E P IU E P IU E P I0/00/10/2 Gb interface ExampleStepActionCommand1Add the relation boards:UGBI N+1 backup, the standby one should be addedADD BRD2Add the E1 frame type (CRC or DF) and code type (HDB3).ADD E1T1CFG3Configure the E1 link:Clock level, backup type of UFEU P

15、lusADD UEPIUTPICFG4Add the BC:TS distribution; PCU as DTE and SGSN as DCE, if through FR, both DTEADD BC5Add the NS-VC, the DLCI added also (NSVC/DLCI consistent with PCU)ADD NSVC6Add the NSE:BSSID usually same with NSEADD NSE Configure Commands:Maintenance:BSSGP layer:DSP SIGBVC:;NSVC layer:%DSP NS

16、VC: SRN=0, SN=1;% Sub No. Slot No. E1/T1 port BC NSVC identifier Valid status 0 1 1 0 1020 UNBLOCKED 0 1 3 0 1040 UNBLOCKEDBC layer:%DSP BC: SRN=0, SN=1, PN=0;%Subrack No. Slot No. E1/T1 port BC Valid status of BC PVCs activated 0 1 0 0 Valid (unblocked, LMI valid) 1Physical layer:%DSP UEPIUTPILNK:

17、SRN=0, SN=1, PN=0;%Subrack No. Slot No. E1/T1 Port Link status 0 1 0 NormalGr interface Protocol StackLocation and subscription management of mobile userUEPI board provide the E1 interfaceUSS7 board provide the MTP2 processing abilityUSPU board process the MTP3, SCCP and MAP layerMTP1MTP3SCCPTCAPMAP

18、MTP2保證物理傳輸進展鏈路控制完成網絡傳輸完成信令網中SP之間可靠的信令傳輸有加強的尋址選路功能 控制信令點之間非業(yè)務相關的信息的傳輸完成挪動用戶的位置管理、用戶數據管理等 Connect to HLR through STPUEPIUEPIUSPUUSPU54SCCPMTPSubsystemSCCPSubsystemDPC+GTABMTPSCCPSubsystemCMTPDPC+SSNStepActionCommand1Add the USPU/UEPI boards:Add USS7 as sub-boardADD BRD2Configure the E1 link:USS7_1+1 b

19、ackupADD UEPIUTPICFG3Add the E1 frame type (CRC) and code type (HDB3).ADD E1T1CFG4Add the MTP conf for STP:ADD N7DPC/N7LKS/NTRT/ADD N7LNK5Add the SCCP conf for STP:Load share between two STPsADD SCCPDPC/SCCPSSN6Add the IMSIGT and SCCPGTADD IMSIGT/SCCPGT Configure CommandsMaintenance:SCCP layer:%DSP

20、SCCPDPC:;%DPC index Network indicator DPC OPC Status Loadshare DPC Backup DPC status SCCP status Congest status 0 National network 0 xFF0981 0 xFF099D Allow Allow NULL Allow Non-congested 1 National network 0 xFF0980 0 xFF099D Allow Allow NULL Allow Non-congestedMTP layer:%DSP N7LNK:;% Subrack No. S

21、lot No. Link No. Transmission service Link fault Link congest 0 4 0 Yes No No Yes No Physical layer:%DSP UEPIUTPILNK: SRN=0, SN=4, PN=0;%Subrack No. Slot No. E1/T1 Port Link status 0 4 0 Normal Gn interface Protocol Stack:BTSBSC/PCUAbisGbGpFirewallGGSNBGSGSNLANother PLMNGnGnUTRANL1PHYIPUDPGTP-CIPL2U

22、DPGTP-U- UGTP changed in board type: GTPC/GTPC_GTPU/GTPUGTPC: GTP-C forwarding, DNS client and NTP client, Need to bind with UGFU and need to configure IP addr.GTPU: GTP-U PDP control and charging data Gn transfer realization61201213UPIU/UGFUUPIU/UFCUUBIU/URCUUPIU/UGFUR R R RLPUSPUUGTPUGTP13StepActi

23、onCommand1. Configure the related boards1Add UGTP board (GTP-C IP)ADD BRD2Add UGFU board (GTP-U IP)ADD BRD2.Binding UGTP 3Binding the UGTP with a UGFU ADD BINDUGFU3. Configure the IP routing.4Set the work mode (Add the backup port)SET UPIU_PORT5Add the IP address for the single board interfaceADD IF

24、IP6 (option)Add the static routingADD IPRT7Add the default routing for boards.ADD DFTRT Configuration CommandsMaintenance:GTP-C Path:%DSP GTPCPATH: SRN=0, SN=12, IPT=IPV4, PIP4=220.206.131.33;% GTP version of path = GTP V1 Attribute of path = SM path State of path = NormalTST GTPCPATH: SRN=0, SN=12,

25、 IPT=IPV4, PIP4=220.206.131.33;GTP-U Path:%DSP GTPUPATH: SRN=3, SN=12, ITP=IPV4, PIP4=220.206.131.33;% GTP version used for path = GTP V1 Path category = UDP data path with GGSN Path status = Path normalTST GTPURNCGSN: SRN=3, SN=12, ITP=IPV4, PIP4=220.206.131.33;If Path is down, we could check the I

26、P connection:%PING IP: SRN=3, SN=12, DIP=220.206.131.33;%If not specify a source address, the board IP address is pinged by default. Ga interface Protocol Stack:BTSBSC/PCUAbisGbSGSNLANGnUTRANL1PHYIPL2UDP/TCPGTPGaCGUGTP function:Transfer CDR between the GSN and the CG.Redirecting the CDR to another C

27、G.Notify the peer entity to re-transmit the data when the unavailable GSN or CGF turns to normal. Configuration Commands(1)Configure interface IP of UPIU boardADD IFIP(2)Configure the static routeADD IPRT(1)Configure the basic info of CG (UDP+port and CG protocol version)ADD CHGCG (2)Configure a CG

28、with charging property(S-CDR/M-CDR period)SET CHGCHAR(1)Configure the protocol version used to generate CDRs (CDR version)SET CHGGA Mobility Management:Modify 2G MM software parameters:SET GMM: includes security procedure parameters, P-TMSI reallocation parameters and IMEI check procedure parameters

29、SET GMMTMR: RAU timer, MS reachable timer.SET SDBTMR: purge timer.ADD CONNECTPLMN: add for the roaming user access.Session Management:Modify 2G SM software parameters:SET 2GSM: APN OI, QoS parameters.ADD PDPAPN: set the default APN for IPv4 PDP.Return to home:After the APN customization function wor

30、ks, based on the IMSI or MSISDN number segments, the SGSN can flexibly choose different GGSNs for the MSs to access the PDN in one PLMN. When the MSs use the public APN to activate PDP contexts after the APN customization function works, the SGSN adds a label for the APN to differentiate the MSs.An

31、operator can configure the IP addresses of different GGSNs for different APNs, and thus realize choosing GGSN System StructureSoftware StructureHardware StructureSGSN ConfigurationHardware ConfGb interfaceGr interfaceGn/Gp interfaceGa interfaceBasic Signaling FlowMaintance and troubleshooting2. Auth

32、enticate1. GPRS AttachVLR3. Update Location to SGSN and VLR4. Attach AcceptHLR1234567890MSBSCSGSNMSCGsDNSBTSSGSNMSDNSBSC/PCUGGSN (B)DNSGGSN (A)2G-GGSN 9. Activate PDP Context Accept 4. Create PDP Context Response 4. Create PDP Context Request 1. Activate PDP Context Request2G-SGSNBSS 2. Security Fun

33、ctionsMS 7. BSS Packet Flow Context ProceduresC1C2 3. Invoke TraceSystem StructureSoftware StructureHardware StructureSGSN ConfigurationHardware ConfGb interfaceGr interfaceGn/Gp interfaceGa interfaceBasic Signaling FlowMaintenance and troubleshooting1. The performance measurement data is lost in so

34、me periods and that in other periods is normal.Possible Cause:the UOMU is reset.the boards related to measurement items are reset or switched over.the entire SGSN system is reset.Handling:Step1: Check if any of the following alarms is generated during the data loss period.UOMU reset alarmUOMU switch

35、over alarmSGSN reset alarmStep 2: Check if the boards related to the measurement item with data loss have historical alarms. 2-1. DNS connection checkCheck whether DNS resolution works: TST DNSTST DNS: FN=0, SN=12, HOST = “uniwap.1322243.MNC001.MCC460.GPRS, RSVTP=ALL;If failed to resolve, go next.Ch

36、eck the DNS server state: DSP DNSSDSP DNSS: SRN=0, SN=12; (UGTP board)If DNS server no response, check the link.2-2 NTP connection checkQuery the NTP Association status: DSP NTPAS211.70.98 Yes 71.80.83.0 V3 1 -19 3000 0.020 0.007 0.002Query the time sync status of NTP client: DSP NTPSTAT Synchronize

37、d to NTP server flag = Yes IP address of synchronization clock = 220.206.128.12 Stratum = 2 Time precision = -7 Reference time stamp = 2019-06-07 10:19:19.182 Time sample delay(s) = 0.0683. Attach Reject with GPRS service not allowedPossible Cause:The MS is roaming and the PLMN to which it belongs i

38、s not configured as an interconnected PLMN in the SGSN.The subscriber dose not subscribe GPRS service in HLR.Handling:Check the traced signaling to obtain the IMSI of the MS.Execute LST CONNECTPLMN on the LMT to query information on the interconnected PLMN. If incorrect, execute MOD CONNECTPLMN. If

39、not found, execute ADD CONNECTPLMNIf the subscriber dose not subscribe GPRS sever in HLR, contact the HLR to confirm the subscription data.4. After sending out Attach Request, Attach Reject with protocol errorPossible Cause:The global title (GT) code is unavailable for location update because the IM

40、SI-GT table is not configured.Therefore, the attach request is rejected.Handling:Check the traced signaling to obtain the IMSI of the MS.Execute LST IMSIGT on the LMT to query information.If not configured, use ADD IMSIGT to add the GT translation.5. Description:After the SGSN sends an Update Locati

41、on message to the HLR, the SGSN does not receive any Insert Subscriber Data or Update Location Ack from the HLR. SGSN sends an Attach Reject message to the MS, carrying the cause value Protocol error, unspecified.Possible Cause:Gr interface has some problem.Handling:Check the traced signaling of Gr

42、interface.DSP N7LNK to query the Gr link status, and DSP UEPIUTPILNK to check the physical link status.Or contact HSTP supporter to investigate.6. Description:All MSs in one cell cannot access the network or implement the GPRS services in a certain period. The Gb interface tracing or Ns interface tr

43、acing shows that the SGSN does not send any message to the MSs after receiving AttachReq messages from MSs. Possible Cause:After the cell is reset, the PCU does not send the cell flow control message. Thus, the SGSN discards the MS message capsule directly.Handling:Execute DSP PTPBVC to check if the cell receives the flow control message.If the cell receives no flow control message, reset the cell to allow the PCU to report the cell flow control message again. RST PTPBVCIf the fault persists,