ericsson-sgsn-architecture-overview-v1.0
- 1. Copyright © 2006 AT&T. All rights Reserved. Ericsson 3G SGSN Architecture Functional Unit Descriptions MKIV Hardware MKVI Hardware Cabling Description Physical Interface Design AT&T Configuration of 3G SGSN Iu/IP Architecture SGSN Pool Architecture SGSN Numbers Network Wide
- 2. SGSN Functional Description The Serving GPRS Support Node (SGSN) handles data subscriber mobility management and transfers user data packets between the User Equipment (UE) and GPRS or UMTS packet core network. In addition, it authenticates the subscriber and the mobile terminal. The SGSN also generates charging data and transfers it to the Charging Gateway (CG) for billing purposes. The SGSN supports primary interfaces for the following equipment in the AT&T network: BSC (Gb) or RNC (Iu- PS), HLR (Gr), GGSN & DNS (Gn), CGF (Ga), OSS (OAM) and LiG (Li). Copyright © 2006 AT&T. All rights Reserved. Page 2
- 3. SGSN Centric Topology Diagram Copyright © 2006 AT&T. All rights Reserved. Page 3
- 4. Functional Board Descriptions Copyright © 2006 AT&T. All rights Reserved. Page 4 Board Type Purpose IP Router PIU Support only IP-based Interfaces (Gn/Gb, Iu-U,Gb over IP, SS7 over IP) FR PIU Support only Frame Relay-based Interfaces (Gb over Frame Relay) SS7 FE NB PIU Support only narrowband SS7-based interfaces SS7 FE BB PIU Support only broadband SS7-based interfaces GPB The General Processing Board (GPB) acts as an AP or an NCB, and is applicable to the MKIV hardware platform only. IBxx The Interface Board version 3 (IBxxv3) PIUs can act as DPs handling payload processing, or handle IP routing or SS7 signaling. The IBxxv4 PIUs can, apart from the IBxxv3 roles, also act as APs. - IBAS Interface Board for ATM Single-mode fiber - IBTE Interface Board for E1/T1 - IBS7 Interface Board for SS7 - IBEN Interface Board for Ethernet FSB The File Server Board (FSB) acts as a File and Boot Server. In the SGSN, one FSB serves as the master FSB. A second FSB serves as a standby FSB mirroring all stored data. If the master FSB fails or needs replacement, the spare FSB takes over operation. PEB The PEB supplies the magazine with power, which is distributed from power connectors on the PEB front panel, through the backplane, to all slots. The PEB supplies the backplane communication with a dual star Ethernet network. The front panel has three ports that are used for magazine interconnection.
- 5. Ericsson Rack Specifics Copyright © 2006 AT&T. All rights Reserved. Page 5 Ericsson SGSN MKIV or MKVI Hardware components 1 - Magazines a Magazine 1 b Magazine 2 c Magazine 3 (optional) 2 – Plug In Units (PIUs) 3 - Backplane
- 6. Ericsson SGSN MKIV WCDMA Hardware Copyright © 2006 AT&T. All rights Reserved. Page 6 MKIV WCDMA SS7 (Narrowband/Broadband SIGTRAN) NB - x2 or BB – x2 Iu-PS (Iu-U & Iu-C) ATM – x2 User Plane/ x2 Control Plane or IP – x2 User Plane/ x2 Control Plane Gn GigE x2 OAM/Gom x2 Console x2 GSS x1 SGSN (W) MkIV 1000
- 7. Ericsson SGSN MKIV GSM Hardware Copyright © 2006 AT&T. All rights Reserved. Page 7 MKIV GSM SS7 (Narrowband/Broadband SIGTRAN) NB - x2 or BB – x2 Gb (Frame Relay / IP) FR – x2 per BSC or IP – x2 User Plane/ x2 Control Plane Gn GigE x2 OAM/Gom x2 Console x2 GSS x1 SGSN (G) MkIV 1000
- 8. Ericsson SGSN MKVI DA Hardware Copyright © 2006 AT&T. All rights Reserved. Page 8 MKIV DA / WCDMA Connectivity SS7 (Narrowband/Broadband SIGTRAN) NB - x2 or BB – x2 Iu-PS (Iu-U & Iu-C) ATM – x2 User Plane/ x2 Control Plane or IP – x2 User Plane/ x2 Control Plane Gn GigE x2 OAM/Gom x2 Console x4 GSS x2 SGSN (WG) MkVI 1500/4
- 9. Cabling Description Copyright © 2006 AT&T. All rights Reserved. Page 9
- 10. Physical Interface Design Copyright © 2006 AT&T. All rights Reserved. Page 10 OSPF Area Global Control Application Iu-U Router1 Iu-U Router2 Iu-U Internal connection SS7 Broadband front-end interface SS7 Back-End Application SCTP Front End Point Iu-C Networks Gom Router 2 Gom Router 1 Back Plane Connection Gr/Gd/Ge Networks Gn Router1 (GigE) Gn Router2 (GigE) ATM PVC SS7 Hardware Magazine 1 ( Slots 2 - 5 ) ATM PVC IBENv4 Magazine 1 ( Slots 19 - 20) IBTEv4 Magazine 2 IBASv4 Magazine 2 ( Slots 11 - 12 ) IBASv4 Mag 1 slot 6, 7 Magazine 2 Magazine 1 ATM PVC Gom Internal Connection Primary Secondary Primary Node B Node B Node B . . . . . Node B IBASv4 Magazine 2 ( Slots 14 - 15 ) Primary Secondary Yao Kuang Lai by Yao Kuang Lai Control Application Control Application Yao Kuang Lai By Yao Kuang Lai User Application GSS FSBv4 Magazine 1 ( Slots 17 – 18 ) A B C D E F G H S E LE C T E D O N -L IN E BackPlane Ethernet 1 Node B RNCs . . . . Terminal Server LI/GTP Prime Source Address in Gom Networks Cingular Gn Routers AT&T Gom Routers Port 19 Port 20 Name WTC1ERCUS08 UMTS SGSN SGSN Logical Network SIZE Date : DWG NO rev May 20, 2008 Logical Diagram PA2 1 OF 1 SS7 Router 2 SS7 Router 1 10.250.255.37 /29 10.251.255.37 /29 SIGNET Routers Magazine 3 IBENv4 Magazine 3 IBTEv4 Magazine 3 AT&T Redmond Lab WCDMA SGSN WTC1ERCUS08 R8 MKVI STP1 SPC: 229-210-0 10.224.241.18 STP2 SPC: 229-211-0 10.225.240.130 Alias SPC: 229-203-0 GigE switch IBASv4 Mag 1 slot 6 - 7 IBENv4 Magazine 2 IBENv4 Magazine 1 IBASv4 Magazine 3 ( Slots 11 - 12 ) FSBv4 Magazine 1 ( Slots 17 - 18) ANCB PNCB Port 19 Port 20 4.38.11.254 O&M 155.165.207.1 /32 Gom Network 155.165.206.0 /27 Gom OSPF Area 0.0.2.154 .231 .230 Gom Service IP 155.165.207.1 /32 Reserved Gn VIP 155.165.17.1 /32 Gn GTP-U 155.165.17.1 /32 Gn OSPF Area 0.0.0.254 .10 .11 Gn Networks (172.24.4.0/27) 10.251.255.33 10.250.255.33 10.250.255.34 /29 10.251.255.34/29 Back Plane Network (169.254.0.0/17) Sigtran Secondary PEBv3 Magazine 2 ( Slots 1 ) PEBv3 Magazine 1 ( Slots 1 ) BackPlane Ethernet 1 BackPlane Ethernet 1 PEBv3 Magazine 3 ( Slots 1 ) BackPlane Ethernet 1 PEBv3 Magazine 1 ( Slots 21) PEBv3 Magazine 2 ( Slots 21) BackPlane Ethernet 2 BackPlane Ethernet 2 BackPlane Ethernet 2 PEBv3 Magazine 3 ( Slots 21) Gn Internal Connection SGSN SS7 SPC 229-98-184 Iu Service IP 172.26.240.1 /32 155.165.195.237 /24 1st FSB 2nd FSB
- 11. AT&T Configuration of 3G SGSN Copyright © 2006 AT&T. All rights Reserved. Page 11 The AT&T configuration of the Ericsson 3G SGSN is governed by two sets of complimentary standards. •Gold Standards •Covers configuration that is Global in nature •Overseen by the Gold Standards Governance Board •Standards available in the Gold Standards Library: https://operations.web.att.com/sites/GoldStandard/Data%20Sha ring/GS_Library.aspx?PageView=Shared •Site Specific CIQs •Covers configuration that is local in nature •Maintained and published by the local Engineering groups
- 12. Iu/IP Architecture Copyright © 2006 AT&T. All rights Reserved. Page 12
- 13. Logical Diagram IuPS/IP Copyright © 2006 AT&T. All rights Reserved. Page 13
- 14. Iu/IP and Pooling Copyright © 2006 AT&T. All rights Reserved. Page 14
- 15. Logical Diagram Gb/IP Copyright © 2006 AT&T. All rights Reserved. Page 15 REMOTE BSC LOCATION SGSN / COLO BSC LOCATION Gb Gb BSC BSC BSC BSC BSC BSC BSC SGSN SGSN IP/MPLS Network Si Si Si Si Si Si Si Si 802.1Q Trunk PE Routers’s Remote BSC 6500/7600 both a layer2 switch and L3 router. WAN links will terminate on closest PE routers within GB VPN. OSPF is used to exchange routing information between remote BSC and PE locations. Each pair of BSC Extreme switches will reside in its own subnet/VLAN. The Extreme switches will provide a layer3 interface creating a L2 demarc. The Extreme switches will run HSRP requiring L2 connectivity from the Cingular provided switches. The Extreme VLAN’s are trunked back to the Juniper routers which provide a highly available L3 gateway using VRRP. Static routes are used on the Extreme switches and within the GB routing-instance for routing information. Static routes are redistributed into GB OSPF process. GB and GN routing-instances will be created on the PE routers to separate GB and GN. OSPF adjacencies will be established between SGSN’s and PE routers. Aggregate routes are used to control route export of OSPF learned routes. Black lines represent GN routing- instance/VLAN/Subnets. This by definition is a separate OSPF routing process. Green lines represent GB routing-instance/ VLAN/subnets. GN GB
- 16. Copyright © 2006 AT&T. All rights Reserved. Page 16 Gb/IP Lab Diagram Copyright © 2006 AT&T. All rights Reserved. Page 16
- 17. Ericsson SGSN Counts Copyright © 2006 AT&T. All rights Reserved. Page 17 YE2008 Central NE SE West Ericsson 2G 37 0 10 21 Total 2G YE 2008 37 0 10 21 Company Total 68 YE2009 Central NE SE West Ericsson 2G 34 0 11 23 Total 2G YE 2009 34 0 11 23 Company Total 68 YE2010 Central NE SE West Ericsson 2G 34 4 11 23 Total 2G YE 2010 34 4 11 23 Company Total 72 YE2008 Central NE SE West Ericsson 3G MkIV 5 3 7 8 Ericsson 3G MkVI 3 0 0 0 Total 3G YE 2008 8 3 7 8 Company Total 26 YE2009 Central NE SE West Ericsson 3G MkIV 5 3 9 11 Ericsson 3G MkVI 15 1 6 7 Total 3G YE 2009 20 4 15 18 Company Total 57 YE2010 Central NE SE West Ericsson 3G MkIV 0 0 2 7 Ericsson 3G MkVI 30 9 21 19 Total 3G YE 2010 30 9 23 26 Company Total 88 Total 2G & 3G SGSNs YE 2008 45 3 17 29 Company Total 94 Total 2G & 3G SGSNs YE 2009 54 4 26 41 Company Total 125 Total 2G & 3G SGSNs YE 2010 64 13 34 49 Company Total 160 YE2010 Ericsson 3G SGSN w/Ericsson RAN 21 9 23 24 Total Ericsson/Ericsson 77 YE2010 Ericsson 3G SGSN w/ALU RAN 9 0 0 2 Total Ericsson/ALU 11 2G SGSN Counts 3G SGSN Counts Grand Totals
- 18. Copyright © 2006 AT&T. All rights Reserved. Ericsson SGSN Performance and Capacity SGSN Capacity Capacity Measurements & Counters Performance of Ericsson 3G SGSN
- 19. SGSN Capacity Copyright © 2006 AT&T. All rights Reserved. Page 19 Product Package SGSN MKIV (G) Gb Transport Type Throughput @ 300 bytes/packet Throughput @ 1450 bytes/packet SAU PDP Contexts MkIV 650/xx (2 Magazine) Gb over Frame Relay 42 kpps (100 Mbps) 11 kpps (130 Mbps) 650,000 780,000 Gb over IP 54 kpps (130 Mbps) 19 kpps (220 Mbps) 650,000 780,000 MkIV 1000/xx (3 Magazine) Gb over Frame Relay 83 kpps (200 Mbps) 30 kpps (350 Mbps) 1,000,000 1,200,000 Gb over IP 117 kpps (280 Mbps) 43 kpps (500 Mbps) 1,000,000 1,200,000 Product Package SGSN MKIV (W) Iu/Gn Transport Type Throughput @ 300 bytes/packet Throughput @ 1450 bytes/packet SAU PDP Contexts MkIV 650/xx (2 Magazine) Iu and Gn over ATM or Ethernet 200 kpps (500 Mbps) 86 kpps (1024 Mbps) 650,000 780,000 MkIV 1000/xx (3 magazine) Iu and Gn over ATM 310 kpps (750 Mbps) (1) 84 kpps (1024 Mbps) 1,000,000 1,200,000 Iu and Gn over Ethernet 625 kpps (1536 Mbps) 345 kpps (4096 Mbps) 1,000,000 1,200,000 Iu over ATM and Gn over Ethernet 420 kpps (1024 Mbps) (2) 200 kpps (2457.6 Mbps) 1,000,000 1,200,000 (1) The throughput figure for WCDMA payload applies for SGSNs using IBASv3b PIUs. When using IBASv3 the throughput figure is 200 kpps (480 Mbps). (2) The throughput figure for WCDMA payload applies for SGSNs using IBASv3b PIUs and having Gn and Iu collocated on all routers except Gom routers. Product Package SGSN MKVI (W) Iu/Gn Transport Type Throughput @ 300 bytes/packet Throughput @ 1450 bytes/packet SAU PDP Contexts MkVI 1500/xx Iu over ATM 417 kpps (1.0 Gbps) 86 kpps (1.0 Gbps) 1,500,000 2,250,000 (W) Iu over Ethernet 1050 kpps (2.5 Gbps) 530 kpps (6.0 Gbps) 1,500,000 2,250,000 (W) MkVI 2000/xx Iu over Ethernet 625 kpps (1.5 Gbps) 345 kpps (4.0 Gbps) 2,000,000 3,000,000 (W)
- 20. Capacity Measurements & Counters Copyright © 2006 AT&T. All rights Reserved. Page 20 CPU Technology Available Used %Utilized Available Used %Utilized Available Used %Utilized %Utilized Link Type # of Links Average %Utilized 3G(MkVI) 950000 303815 32% 1200000 160978 13% 1000 403.73 40% 37% IP 1 11% 3G(MkVI) 950000 236910 25% 1200000 125727 10% 1000 291.01 29% 28% IP 1 6% 3G(MkVI) 950000 254909 27% 1200000 151279 13% 1000 323.18 32% 41% LSL 16 29% 3G(MkVI) 950000 426017 45% 1200000 199309 17% 1000 584.12 58% 50% IP 1 14% 3G(MkIV) 700000 260269 37% 1200000 121875 10% 1500 307.51 21% 65% IP 1 5% 3G(MkIV) 700000 257741 37% 1200000 120146 10% 1500 303.33 20% 62% IP 1 5% 3G(MkIV) 700000 259645 37% 1200000 121548 10% 1500 311.59 21% 62% IP 1 5% 3G(MkIV) 700000 257686 37% 1200000 120689 10% 1500 304.05 20% 63% IP 1 5% 3G(MkIV) 700000 258294 37% 1200000 121158 10% 1500 305.42 20% 65% IP 1 5% 3G(MkVI) 950000 387390 41% 1200000 181038 15% 1500 466.76 31% 40% IP 1 8% 3G(MkVI) 950000 388600 41% 1200000 181759 15% 1500 464.88 31% 40% IP 1 8% 2G 650000 225511 35% 780000 75976 10% 200 31.89 16% 51% LSL 16 13% 2G 650000 118278 18% 780000 29376 4% 200 11.38 6% 29% LSL 16 11% 2G 650000 175826 27% 780000 40161 5% 200 18.46 9% 40% LSL 16 15% 2G 650000 141525 22% 780000 42245 5% 200 21.84 11% 38% LSL 16 10% Attachment PDP Throughput(Mbps) SS7
- 21. Sample Performance Data for an Ericsson 3G SGSN Copyright © 2006 AT&T. All rights Reserved. Page 21 0 50000 100000 150000 200000 250000 4/12/2010 3:00 4/12/2010 4:00 4/12/2010 5:00 4/12/2010 6:00 4/12/2010 7:00 4/12/2010 8:00 4/12/2010 9:00 4/12/2010 10:00 4/12/2010 11:00 4/12/2010 12:00 4/12/2010 13:00 4/12/2010 14:00 4/12/2010 15:00 4/12/2010 16:00 4/12/2010 17:00 4/12/2010 18:00 4/12/2010 19:00 4/12/2010 20:00 4/12/2010 21:00 4/12/2010 22:00 4/12/2010 23:00 4/13/2010 0:00 4/13/2010 1:00 4/13/2010 2:00 4/13/2010 3:00 4/13/2010 4:00 4/13/2010 5:00 4/13/2010 6:00 4/13/2010 7:00 4/13/2010 8:00 4/13/2010 9:00 4/13/2010 10:00 4/13/2010 11:00 4/13/2010 12:00 4/13/2010 13:00 4/13/2010 14:00 4/13/2010 15:00 4/13/2010 16:00 4/13/2010 17:00 4/13/2010 18:00 4/13/2010 19:00 4/13/2010 20:00 4/13/2010 21:00 4/13/2010 22:00 4/13/2010 23:00 4/14/2010 0:00 4/14/2010 1:00 SAU W 68000 70000 72000 74000 76000 78000 80000 82000 84000 86000 88000 90000 4/12/2010 3:00 4/12/2010 4:00 4/12/2010 5:00 4/12/2010 6:00 4/12/2010 7:00 4/12/2010 8:00 4/12/2010 9:00 4/12/2010 10:00 4/12/2010 11:00 4/12/2010 12:00 4/12/2010 13:00 4/12/2010 14:00 4/12/2010 15:00 4/12/2010 16:00 4/12/2010 17:00 4/12/2010 18:00 4/12/2010 19:00 4/12/2010 20:00 4/12/2010 21:00 4/12/2010 22:00 4/12/2010 23:00 4/13/2010 0:00 4/13/2010 1:00 4/13/2010 2:00 4/13/2010 3:00 4/13/2010 4:00 4/13/2010 5:00 4/13/2010 6:00 4/13/2010 7:00 4/13/2010 8:00 4/13/2010 9:00 4/13/2010 10:00 4/13/2010 11:00 4/13/2010 12:00 4/13/2010 13:00 4/13/2010 14:00 4/13/2010 15:00 4/13/2010 16:00 4/13/2010 17:00 4/13/2010 18:00 4/13/2010 19:00 4/13/2010 20:00 4/13/2010 21:00 4/13/2010 22:00 4/13/2010 23:00 4/14/2010 0:00 4/14/2010 1:00 NbrActivePdpPerSgsn W 0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00 Busy Hour CPU Load(Average) CPU Load Attached Subscribers Active PDP Sessions
- 22. Copyright © 2006 AT&T. All rights Reserved. Page 22 0 100000 200000 300000 400000 500000 600000 succGprsAttachUmts 0 500000 1000000 1500000 2000000 2500000 3000000 3500000 succInterSgsnRaUpdateUmts Inter RAU Success Rate 0 1000000 2000000 3000000 4000000 5000000 6000000 succIntraSgsnRaUpdateUmts 0 500000 1000000 1500000 2000000 2500000 SM.SuccActPdpContext.U Sample Performance Data for an Ericsson 3G SGSN - Continued Intra RAU Success Rate Attach Success Rate PDP Activation Success Rate
- 23. Copyright © 2006 AT&T. All rights Reserved. Ericsson SGSN Lab Testing SGSN/MME Development Process Lab Certification FFA Process Fault Management Process Lab Lineups Load/Stress Testing
- 24. SGSN/MME Development Process Copyright © 2006 AT&T. All rights Reserved. Page 24 SGSN/MME Development FNP LABs CP, Market, Ops... Feature, enhancement, Solution... Review request Accepted Rejected EDR Review EDR Rejected Accepted Send Back Inform of Decision Analyze Time and budget assessment Review And set Priorities Agree TNRP Budget, Communicate Reject LAB FFA GA POR Development Features, Fixes Enhancement Product evolution...
- 25. Software Certification Process Copyright © 2006 AT&T. All rights Reserved. Page 25 Test documentation including the Test Object List (TOL), Test Instructions (TI) and Test Results (TR) received from SGSN vendor. TOL, TI and TR review conducted by A&P and the SGSN vendor. Discrepancies identified in test Requirements? Review and address discrepancies/ gaps in the TOL, TI or TR Lab Entry – A&P performs lab validation of the release using test documentation provided in previous steps. Faults Found? Lab Exit – A&P and the vendor mutually agree that the release is stable and all known faults and issues are properly addressed. Lab Exit Report Approved. Are faults considered lab exit gating? Fix faults, determine level of regression testing required to fully validate the fix and subsequent software build. Perform Regression Testing FFA Entry Addition of A&P approved regression test suite and finalize test plan for the SGSN release. Update Documentation escalate comprehensive and fully documented issue including severity (high, medium and low) Update LAB Issue List Update LAB Issue List LAB Requirements Completed LAB Requirements: · Software Requirement · Hardware Requirement · Testing Requirement · Timeframe · Network Configuration · Resources Requirement · Activity Freezes · Test Call Plan · Soak Period · Alternates NO YES YES YES NO NO
- 26. FFA Process Copyright © 2006 AT&T. All rights Reserved. Page 26 Lab testing completed including: full regression and functional tests and production of a Lab Exit Report Request FFA through TNRP FFA Process Is FFA Accepted YES NO Review and address any FFA technical or budgetary requirements YES FFA Exit – General Availability (GA) Declaration All Initial Tests Passed YES Perform Initial Regression Testing NO Provide FFA site requirements and recommendations through the TNRP process Update FFA Request FFA Entry – A&P ensures that any applicable test cases not able to be tested in the lab due to limited HW or resources, etc. are verified. Request FFA site selection through TNRP FFA Site Selection Process Is FFA Site Identified NO Escalate FFAA site selection through the TNRP escalation process Implement network changes including any hardware, software and external interface changes Address faults / issues, determine level of regression testing required to fully validate the fix and subsequent software build if applicable. Do Critical network impacting faults remain? Perform Regression and Functional Testing All Tests Passed YES NO Address faults / issues, determine level of regression testing required to fully validate the fix and subsequent software build if applicable. NO YES YES Revert FFA node to pre FFA Hardware and software configuration YES Revert FFA node to pre FFA Hardware and software configuration NO YES FFA Requirements: · Software Requirement · Hardware Requirement · Testing Requirement · Timeframe · Network Configuration · Resources Requirement · Activity Freezes · Test Call Plan · Soak Period · Alternates Do FFA exit gating faults remain? Do Critical network impacting faults remain? NO Address faults / issues, determine level of regression testing required to fully validate the fix and subsequent software build if applicable.
- 27. Fault Management Process Copyright © 2006 AT&T. All rights Reserved. Page 27 NO Take SW Release/Correction Package through AT&T A&P Lab Certification Process (Ref. SGSN Software Release Certification Process Flow v6.vsd) Document fault details – scope, impact, subscriber and device info, test environment, etc. Update Issues tracker and test report Further testing and analysis to determine scope and impact Collection of detailed SGSN logs and traces Assign fault severity. Open case with SGSN vendor for further analysis and resolution Track case/ticket progress with SGSN vendor Obtain Fix/Fault Correction as part of a new correction package Review Fault Correction description, Vendor test report, Impact details, etc. Vendor Fault and Correction Delivery Process (Ref. Vendor Fault Correction Process Flow) Update Issues Tracker SW Fault Discovery during test case execution in Redmond lab YES Lab Exit – A&P and the vendor mutually agree that the release is stable and all known faults/issues are addressed. Take SW Release/Correction Package through AT&T FFA Process (Ref. SGSN FFA Process Flow v1.2) SW Fault Discovery during test case execution in FFA FFA Exit – A&P and the vendor mutually agree that the release is stable and all known faults/issues are addressed. YES NO
- 28. Ericsson 3G SGSN Lab Buildout Copyright © 2006 AT&T. All rights Reserved. Page 28
- 29. Ericsson 2G SGSN Lab Buildout Copyright © 2006 AT&T. All rights Reserved. Page 29 2G Integration WTC3ERCGS03 E/// BSC 4 SIE BSC 1 SIE BSC 2 SIE BSC 4 2G Development WTC3ERCGS04 E/// BSC 7 SIE BSC 3 2G Pool Development WTC3ERCGS05 E/// BSC 3 E/// BSC 6 WTC3ERCGS06 SGSN 4 will be converted from a MKIV 2G node to a MKVI 3G node to support the Iu-PS/IP for ALU RAN project. 2009A/CP03 Development Work MKVI 3G Conversion ALU Iu-ps & 3G Pooling Pooled Environment Support
- 30. Load/Stress Testing Copyright © 2006 AT&T. All rights Reserved. Page 30 •The Regional Packet Core team is in the process of implementing Spirent Load Generation equipment in the Lab. The LTE integration is the priority and integration for 2G and 3G Ericsson SGSN testing will follow. •The current Spirent platform supports Iu/IP and Iu/ATM support will be available beginning in June 2010 with the exact Lab integration schedule TBD.
- 31. Copyright © 2006 AT&T. All rights Reserved. Ericsson SGSN Roadmap Overview SGSN – MME Roadmap Technical Roadmap Release Plan
- 32. Copyright © 2006 AT&T. All rights Reserved. Page 32 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 2009 2010 2011 SGSN-MME Roadmap Overview Releases (GA dates) Candidate Ready for Contract Indicative Released 2011 SGSN-MME 2011A Network requested 2ndary PDP HLR QoS Override M2M: Restoration procedures Ue Trace Streaming Selective Service Request Handling Indirect LTE packet forwarding (S1) HSS initiated modifications of MME ’VLR’ Rel 8 interfaces S3, S4, S12, S6d, S16 Location Services: CellId over SLg HSS/S6a on IPv6 transport Idle-mode signaling reduction 2010A 2010 SGSN-MME 2010B Increased throughput Network requested 2ndary PDP context activation SGSN pool move with session continuity Enhanced ARP SGSN-MME Interworking IPv4-v6 over Gn Mk VI+ hardware platform IPv6 transport (MME) SMS over SGs CS Fallback 2011 SGSN-MME 2011B Mk VIII Hardware platform up to 10M SAU 20-30 Gbps (Iu/IP) ETWS Support MBMS for LTE Ethernet Jumbo Frames EUL up to 12 Mbps 2011A Q1 Q2 Q3 Q4 2011B 2010B
- 33. Copyright © 2006 AT&T. All rights Reserved. Page 33 SGSN-MME 2011A SGSN › Network requested 2ndary PDP: HLR QoS override › M2M: Restoration Procedures › Selective Service Request Handling › Object Manager (OBM): adding Gb/FR domain Key Common SGSN-MME Functionality › MkVIII HW Generation, in LTE/3G Dual Access configuration supporting up to: – 10 MSAU – 20-30 Gbps (Iu/IP) – Note: Release period not yet determined › Automatic transfer of spooled CDR’s › Improved location based services › Optimization for M2M stationary devices › EBM additional trigger events › UE Trace streaming Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 2009 2010 2011 2010B 2009B 2010A 2011A 2011B GA date, Candidate release status GA date, Indicative release status GA date
- 34. Copyright © 2006 AT&T. All rights Reserved. Reference Materials
- 35. Reference Materials The following SOLAR link has the reference material listed below: http://solar.edc.cingular.net/livelink/livelink?func=ll&objid=15564987&objAction=brows e&sort=name 2009A Architecture 2009A Characteristics 2009A Hardware AT&T Q1 2010 SGSN-MME Roadmap Ericsson SGSN 2-009A CP03 Lab Report National SGSN Report Network Overview PDC Tool Report SGSN Total Node Count Copyright © 2006 AT&T. All rights Reserved. Page 35
- 36. Inter-SGSN Call Flow Copyright © 2006 AT&T. All rights Reserved. Page 36
- 37. PDP Activation Call Flow Copyright © 2006 AT&T. All rights Reserved. Page 37
- 38. Attach Call Flow Copyright © 2006 AT&T. All rights Reserved. Page 38
- 39. Gi Gn Iu Two Tunnels (Iu+Gn) 3G Direct Tunnel tunnel GTP User plane GTP signaling Legend : RANAP signaling Iu-Cp Iu-Up SGSN RNC GGSN 3G Direct Tunnel – Concept Direct connect between RNC and GGSN