Building EPC Systems


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Radisys experts Todd Mersch, Renuka Bhalerao and Eric Greorgy use this webinar to discuss the technical challenges when delivering LTE Evolved Packet Core network equipment from highly scalable network elements to providing the entire network in a small form factor. This includes scalability, performance, and key trade-offs when going to a compact network approach versus separate, distinct network elements.

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Building EPC Systems

  1. 1. Welcome! Real Implementation Challenges of LTE Network Equipment: April 12 Exploring the Trade-offs and Deploying LTE Small Cells: Interference Solutions Mitigation Solutions May 17 Building EPC Systems June 14 The LTE Service Layer July 12 End-to-end QoS in LTE To register for the remaining webinars: Radisys Corporation Confidential 1
  2. 2. Building EPC SystemsFrom Highly Scalable to Converged Systems Speakers: Todd Mersch, Director Product Line Management Eric Gregory, Director Product Line Management Renuka Bhalerao, Principal Architect May 17, 2012 Radisys Corporation Confidential 2
  3. 3. Today‟s Agenda  Market Dynamics  LTE EPC – All-IP-based Capacity Storm  Delivering Highly Scalable EPC Equipment  Shrinking the Network for Specialized Deployments  Q&A  Summary / Wrap-Up Radisys Corporation Confidential 3
  4. 4. End-to-End LTE Infrastructure From Radio Access to Media ProcessingRadio Access Network Evolved Packet Core Policy Control IMS IP Policy & Multimedia User Mobility Charging Subsystem Equipment Management Routing Entity Function Home eNodeB Application Media Server Resource Function User Policy & Equipment Charging Enforcement Internet Function eNodeB LTE Security Serving Packet Gateway Gateway Gateway  Macro  Small Cells  10G  40G ATCA  Dumb  Smart Pipes  Audio  Video Conf  60+ Customer Wins ~40% ATCA Market Share  Traffic Management  ~65% Market Share Radisys Corporation Confidential 4
  5. 5. Technology to Drive Wireless Disruption,Service Monetization Mired in Uncertainty Global survey of mobile operators to get decision-maker insights Devices continue to drive change among subscribers & operators VoLTE is seen as necessary but not a top priority Small Cells and Wi-Fi offload provide a capacity boost LTE Advanced will bring improved spectrum efficiency & lower costs FDD & TDD will both succeed, but not yet clear how they will coexist Radisys Corporation Confidential 5
  6. 6. Radisys in the Core Network  Radisys is in the core: from ASN gateways to EPC to DPI, Radisys ATCA & Trillium software is everywhere.  In order to drive revenue, operators need affordable ways to increase capacity • Operators are focused on making their networks faster and more efficient • Looking for solutions to ease network capacity pressure  Beyond simply keeping up with traffic, operators need new, more dynamic, application-based revenue models to prepare for the future • Application development is moving fast and operators need to keep up In order to monetize growing data demand, operators need to increase capacity, reduce expenditures and bring new applications to market – now Radisys Corporation Confidential 6
  7. 7. Today‟s Agenda  Market Dynamics  LTE EPC: All-IP-based Capacity Storm  Delivering Highly Scalable EPC Equipment  Shrinking the Network for Specialized Deployments  Q&A  Summary / Wrap-Up Radisys Corporation Confidential 7
  8. 8. LTE EPC ChallengesEfficiency is a Must  UMTS has Delivered (Finally)! • At UMTS launch, the entire discussion was around the “killer app” • The killer app, as hoped, is streaming media • But the “killer app” turned out to be a network killer as the market tries to figure out how to monetize all the applications – OR how to reduce operational costs  Turning to LTE, discussions have been about efficiency • Cost per bit • Spectral Efficiency (Subs per MHz) • Quality of Service / Quality of Experience • Higher densities  However, the focus to date on LTE has been about delivering higher throughputs in the access network • The discussion now needs to shift to the core of the network Radisys Corporation Confidential 8
  9. 9. EPC Network Architecture • NAS & anchoring HO signaling, authentication, MME functions paging, radio bearer management, embedded HSS, PCRF • Route and forward user packets, S-GW functions • User plane mobility anchor for HO • Point of exit and entry of traffic between UEs and P-GW functions external PDNs, PCEF Radisys Corporation Confidential 9
  10. 10. LTE by the Numbers Performance Characteristic EPC Impact Significantly increased peak data rates High throughput packet processing  100Mbps DL, 50Mbps UL Improved spectrum efficiency Better RAN efficiency = faster saturation  Up to 4X compared to UMTS of EPC capacity Reduced round-trip latency High speed control and data plane  < 100ms control, <5 ms data processing for mobile internet  Real-time applications (e.g., online experience Data throughput: ~200 gaming) Gbps Data sessions: ~5 million Scalable bandwidth Signaling rate: 100k  1.25MHz – 20MHz compared to UMTS High throughput, transactions/sec 5MHz low latency packet processing Compatibility with earlier systems Control plane demands for managing  SAE supports Inter-RAT hand-offs UMTS HO / states across multiple domains. & CDMA2000 EPC Performance Key to Delivering the Promise of LTE Radisys Corporation Confidential 10
  11. 11. LTE EPC - Smart NetworkFlat, Scalable and Secure  High speed and low latency but also address capacity requirements • So make sure the networks are not underbuilt and over utilized anymore  Significant signaling load with large number of bandwidth hungry, dynamic sessions  Nature of data traffic is „always on‟ with support for dynamic session management due to mobility, coverage etc. • Voice and data traffic on the same IP backbone  Widespread use of DPI expected for dynamic traffic management and policy control and effective applications support  Growing need for IPsec and access aggregation for the HetNet era  Future Proof: Not only the high speed user data but rapidly multiplying M2M connections All IP backbone, simple network architecture Radisys Corporation Confidential 11
  12. 12. ABCs of Building EPC Systems Carrier-grade platforms Purpose built, Multi-core, multi processor HW Specialized accelerators Highly Scalable EPC Systems Standards- Compliant SW -well tested -IOT’d and field deployed Radisys Corporation Confidential 12
  13. 13. Today‟s Agenda  Evolved Packet Core Requirements & Market Drivers  LTE EPC: All-IP-based Capacity Storm  Delivering Highly Scalable EPC Equipment  Shrinking the Network for Specialized Deployments  Q&A  Summary / Wrap-Up Radisys Corporation Confidential 13
  14. 14. Anatomy of an EPC System MME Application SGW/PGW Application Ready Platform Ready Platform eGTPv1/eGTPv2 NAS, S1 AP, Diameter System Management (Gn, S5, S11, S4) (S10, S6a) SAF AIS Application API - System integration HA Management over purpose-built HW OS Networking Stack - Scalable model with a Operating System blade level architecture Fast Path User Plane IPMI commands, firmware, BIOS, etc. GTP-u, IPv4, IPv6, IPSeC L2HA Network Health Checking Chassis & Packet Storage, Compute Switch Shelf Mgr Processor AMCs, etc. Legend Hardware Software APIs Third Party Products Application Radisys Corporation Confidential 14
  15. 15. EPC Platform Building Blocks  System integration of Hub, Node and  Redundancy is a pre- Chassis requisite for telecom  Important with new 40G System Redundancy environments high speed  Switch redundancy technologies  Application redundancy Platform Investment Management Protection & T40 Scalability  Single Point Integration  Investments made in  Centralized software 10G platform carry upgrades forward to 40G  Centralized diagnostics  TEMs need to scale  Extensible framework for  Upgraded ePCs will need to down to meet new TEMs to include their own get to market rapidly to deliver application req‟s (i.e., customer sensors or expected cost efficiencies public safety) watchdogs  Increased SW content can help decrease TTM Radisys Corporation Confidential 15
  16. 16. Leveraging Bladed Systems Intel CPU boards running Trillium LTE Control Plane Framework NPU packet processing boards running fastpath data plane SW Functions hosted on CPU: • For MME: Mobility management, authentication & key management, location services interfaces, handover interworking to 2 & 3G circuit switched & packet systems, subscriber profile interfaces • For PGW & SGW: Control plane logic, OAM, billing, PCC / PCRF interfaces Functions hosted on NPU: • For PGW & SGW: User / bearer plane packet processing & forwarding, traffic shaping & QoS Management, packet counters & statistics Radisys Corporation Confidential 16
  17. 17. Scalability Large Scale Deployment • 3 x 14-slot Chassis • Full Chassis for MME • 12x CPU board • Full Chassis for S G/W • 10x NPU boards • 2x CPU boards for OAM/Billing • Full Chassis for P G/W • 10x NPU boards • 2x CPU boards for OAM/Billing Small Scale Deployment • 1x 2 slot chassis • MME and Control • 1x CPU • P G/W + S G/W • 1x NPU • Ideal for specialized apps (Defense, Rural, etc) Radisys Corporation Confidential 17
  18. 18. 40G = Reduced Cost / Bit  ATCA 10G System • Loaded with 12x NPU • Support for 108,000 video sessions • Cost -> $0.93 per session  ATCA 40G System – Matching Density • 4x NPUs and higher throughput 40G switch • Support for 108,000 video sessions • Cost -> $0.52 per session  ATCA 40G System – High Density • 12x NPUs and higher throughput 40G switch • Support for 320,000 video sessions • Cost -> $0.41 per session ATCA 40G Delivers a Cost-Effective EPC Radisys Corporation Confidential 18
  19. 19. Linkage Between 3G and LTE  If architectures were planned appropriately then adding LTE to the core network may be as easy as a software upgrade • MME + SGSN • SGW / PGW + GGSN  This leads to a couple of divergent conclusions • It should be fairly easy to create a multi-function core network device – The upgraded platforms may not have the bandwidth to keep up with two different access technologies – one of which significantly increases bandwidth – ATCA is ideal to help with the scalability aspect Radisys Corporation Confidential 19
  20. 20. Advanced FeaturesCompetitive Differentiation Traffic Specialized Aggregation Load Balancer Optimization traffic offload services (edge • Traffic services / access GW) •Multi-blade solution needs an efficient shaping, • Small cells, • Support high load balancing to number of base effectively utilize traffic mgmt, • IOG resources in each Lawful stations in • Wi-Fi offload various forms blade •Maintains affinity of Intercept, (HetNet) flow to a given blade data caching in a scalable system •A central entity that is responsible for moving traffic away from failed blades in a redundant system Radisys Corporation Confidential 20
  21. 21. POLL Question How do you plan to provide EPC functionality to your customers? A. Separate 3G & LTE products on existing hardware platform B. Separate 3G & LTE products on upgraded hardware platform C. Combined 3G & LTE products on existing hardware platform D. Combined 3G & LTE products on upgraded hardware platform Radisys Corporation Confidential 21
  22. 22. Today‟s Agenda  Evolved Packet Core Requirements & Market Drivers  LTE EPC: All-IP-based Capacity Storm  Delivering Highly Scalable EPC Equipment  Shrinking the Network for Specialized Deployments  Q&A  Summary / Wrap-Up Radisys Corporation Confidential 22
  23. 23. Early Realization  Smarter (and smaller) is better when it comes to Network in a box applications for niche markets  Full capacity and function at the network edge  Enables increased access at Low Cost  Where is the need for it  Near Field Communications  Public Safety  Aerospace, defense  Developing economies & rural deployment  Greenfield deployments Radisys Corporation Confidential 23
  24. 24. LTE On Battlefield Challenge Need for Platoon-level communications • eNB & EPC running • Based in Humvee on COM Express or man-wearable module with carrier • Size, weight and card for air interface power constraints • Humvee is “self • Limited or no contained” 4G backhaul Network connections Solution  Computer on Module (COM) Express: Mobile, low power, small form factor, ruggedized, extended temperature  Rackmount Server: High performance image processing, long-life solutions Radisys Corporation Confidential 24
  25. 25. Drivers Of Converged LTE Network Standards- based Solution Complete Secure ALL Functionality IP backbone with Access at the Edge Size, Converged Weight and functions in power a small FF constraints Radisys Corporation Confidential 25
  26. 26. Form Factor Flexibility  Secure Small Scale Field Computing / Communications Element • COM Express in a vehicle digital backbone  Battlefield Computing / Communications Solution (optimal) • Small Scale (COM Express + LTE Radio)  Secure Medium / Large Scale Computing / Comms Element • ATCA Systems: 2 slot or 6 slot Chassis options  Large Scale (6-slot ATCA w/ Virtualization SW + CNE + MS + SEG) • Integrated End to End Communications • Secure Small Scale Field Computing / Communications Element + Medium / Large Scale Computing / Communications Element + partner components Radisys Corporation Confidential 26
  27. 27. LTE Converged Network: EPC In a Box EUTRA Control Plane Data Plane eNB Application (RRM, SON, Timing) Control Plane Data Plane eNB MME, SGW/PGW. HSS APPLICATION APPLICATION OA&M (TR69/TR196) RRC Data App S1AP Diameter eGTP-c S1-AP eGTP-u PDCP eGTP SCTP SCTP UDP SCTP UDP RLC TUCL IP IP IP (IP Sec) System IP IP Mgmt MAC Convergence Layer eNodeB EPC PHY Custom Carrier COM Express (Application-specific Carrier Board) (Computer on Module) + = Complete EPC in a Box Radisys Corporation Confidential 27
  28. 28. Converged EPCRequirements – Performance – Tradeoffs  Driving Requirements  Optimizations • High degree of robustness, reliability and • Local function for HSS and availability Policy management • Better network resource management • No traditional redundancy (guaranteed QoS, traffic engineering) requirements • Ease of installation and upgrade • Limited HO and inter RAT • Ability to enable new applications like interaction VoIP, OTT • No Billing and charging in • Future-proof investment some scenarios Category Supported Small FF (non-ATCA), easy to Platform install, mobile (on a vehicle) Power 150 – 200W Consumption Number of users 100 – 1000 connected supported Data Throughput Up to 14+ Mbps per user Radisys Corporation Confidential 28
  29. 29. Complexities of ArchitectingConverged EPC •Small FF, lower power consumption •Need for cost-effective solution •Ruggedized for outdoors •Minimum HW configuration to start with •Easy to transport & setup at disaster sites •Architect the SW functions taking max •Self contained OAM to bring up system advantage of platform feature set Easy Converged installation Functions Minimum Small external Footprint control Standards- Stable & based Robust Interoperable, Maintain QoS extendable •Maintain required QoS level for subs and related applications •Ability to direct best possible resources •Need to maintain external interfaces with to highest priority users, e.g. in disaster HSS, PCRF situations •Self-contained database/policy when •Redundancy support at chassis and geo backhaul is unavailable level (1:1 for control plane, load balance for •Can be scaled up as needed with user plane) additional HW components Radisys Corporation Confidential 29
  30. 30. POLL Question What market will deploy the most network-in-a-box solutions? A. Aerospace & Defense B. Public Safety C. Rural / Emerging Markets D. Other Radisys Corporation Confidential 30
  31. 31. Conclusion EPC Opportunity • Highly-scalable core networks • Single system for specialized deployment Challenges & Opportunities Embedded • Delivering lower cost / bit = 40G Wireless • Enabling scalability in small footprint Infrastructure Solutions Strategic focus on LTE • Complete EPC solutions Unmatched • Scalable = COM Express, Appliance, Products & ATCA Expertise Radisys Corporation Confidential 31
  32. 32. Q&A  Contact us! Todd Mersch Eric Gregory Renuka Bhalerao For more information on our products, visit: ̴ Please fill out our short survey ̴ Enter in your mailing address to receive a Free Trillium Poster! THANK YOU FOR ATTENDING! Radisys Corporation Confidential 32
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