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Architecting Femtocell Solutions- The Ten Most Important Steps to Building a Femtocell
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Architecting Femtocell Solutions- The Ten Most Important Steps to Building a Femtocell


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Presented by Todd Mersch at China Femtocell Symposium 2009 on Oct 15.

Presented by Todd Mersch at China Femtocell Symposium 2009 on Oct 15.

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  • 1. Architecting Femtocell Solutions The Ten Most Important Steps to Building a Femtocell Todd Mersch Director, Product Line Management Continuous Computing Confidential and Proprietary
  • 2. At a Glance Over 150 Customers Worldwide Protocol Software LTE DPI Femtocell ATCA & Professional cPCI Hardware Services “Smarter, Faster, Cheaper” LTE Mobile Broadband Confidential and Proprietary 2
  • 3. Mobile Broadband: Huge Demand, Huge Challenges Mobile voice revenues saturating Mobile broadband now driving growth Traffic up 130% per year Doubling every 9 months! BUT new base stations & spectrum Source: IDC adding only 20% capacity / year Video is the true network killer app Will bring mobile broadband to its knees! Data streams are no longer bursty Ex: Peer-to-peer (P2P) & streaming Operators need to act! Source: Pyramid Research Source: Cisco Visual Networking Index, 2009 Confidential and Proprietary 3
  • 4. 3G & LTE Femtocells Home Base Station Femtocell Solutions Offloads the Provides cell coverage indoors most power- Low-power & self-configuring to Access point (CPE) hungry 3G users from the minimize interference Aligns with 3G / LTE standards macrocell to a Leverages users’ broadband home base station Standard air interfaces Backhaul traffic on users’ broadband IP Offloads users from macrocell Macro network Standard 3G 3G femtocell network base station mobile phone converged device Confidential and Proprietary 4
  • 5. 3C Stifling 3G Adoption Coverage, Churn, Capacity Unhappy Customer Base Coverage 3G suffers from inadequate indoor signal penetration Consumer spends ~60% - 70% time in indoor environments Poor Coverage = Poor Voice + Poor Video + Lower Data Rates Churn Top Line Hit Consumer paying higher price for 3G / HSPA expects high quality of service Poor Coverage increases Churn Churn = ~$100/month ARPU Loss + ~$400 New customer acquisition cost Capacity Indoor users transmitting at high power Bottom Line Miss High Power = Low Battery Life More Cell Sites = Higher OpEx + CapEx Tough to Be a 3G Carrier! Confidential and Proprietary 5
  • 6. Building FAP – Eight Critical Decisions 1. Silicon Selection 2. Protecting Software Investments 3. Supporting Evolving Network Architectures 4. Capacity & Performance 5. Standalone vs. Converged CPE Device 6. RF Interference Management 7. FemtoZone Services 8. Future Proofing, What’s Next Confidential and Proprietary 6
  • 7. Silicon Selection Integrated Silicon vs. Discrete Components Modem Functions Baseband Functions RRM, RRC, RLC, MAC, PDCP, RANAP, GTP… Hardware Accelerators Network Security – IPsec Encryption Engines – Kasumi, Snow3G… Timing Synchronization – IEEE 1588, NTP v2… Integrated Silicon Drives BOM Cost Down Confidential and Proprietary 7
  • 8. Protecting Software Investments Underlying Hardware Platform will Change Vibrant silicon eco-system High cost pressures FAP Software is Complex RRM, Management, Security, Signaling, Services… Protecting Software Investments is a MUST Software Portability = Flexibility Silicon roadmaps will evolve Quickly capitalize on new features and lower cost Ease of Software Portability will Go a Long Way Confidential and Proprietary 8
  • 9. Evolving Network Architectures Iu-CS Iu-CS IP-RAN Gateway Gateway Security Security Tunneled Iu MSC Femto MSC Iu Concentrator Iu-h Gateway Iu-PS Iu-PS SGSN SGSN Tunneled Iu New Iu-h MSC AAA System (e.g. HSS) IuCS IuCS Diameter IWF AS 3G RAN MSC GGSN IuCS SIP / IMS IuPS IMS Call Gn Control Gateway Gi Security SIP Iu OR Femto CSCF SGSN Wi Iu-h Gateway Cx RTP MGC Gi MGW IuPS Packet Data Wm AAA System Gateway (e.g. HSS) SIP Iu-to-SIP FGW SGSN SIP in FAP Confidential and Proprietary 9
  • 10. Trillium Repertoire Loaded – Architecture Agnostic Control Application Forwarding Application Control Application Forwarding Application RRC PDCP RANAP Iu-UP RRC PDCP RANAP HNBAP Iu-UP Stack Manager Stack Manager IP-RAN RLC SCCP RLC RUA MAC-b,MAC-d,MAC-sh M3UA GTP MAC-b,MAC-d,MAC-sh SCTP GTP MAC-HS,MAC-ES MAC-E* SCTP MAC-HS,MAC-ES MAC-E* PHY IP (IP Sec) PHY IP (IP Sec) Tunneled Iu New Iu-h Control Application Forwarding Application CC/MM/GMM/SM Forwarding Application Stack Manager RRC PDCP RRC PDCP RANAP Iu-UP Stack Manager IuCS SIP / IMS RLC RLC SCCP MAC-b,MAC-d,MAC-sh SIP / RTP MAC-b,MAC-d,MAC-sh M3UA GTP MAC-HS,MAC-ES MAC-E* TCP / UDP SCTP MAC-HS,MAC-ES MAC-E* SCTP PHY IPSec IuPS PHY IP (IP Sec) Iu-to-SIP FGW SIP in FAP Network Architectures will Continue to Evolve & Change Confidential and Proprietary 10
  • 11. Capacity & Performance Performance = CPU Cycles = Cost Software optimization is a MUST Aggregate HSDPA Traffic Rates Classes of Femtocell 80 70 Residential vs. enterprise 60 CPU Usage (in %) 50 Open vs. closed access 40 30 20 Femto vs. Super Femto 10 0 0 1000 2000 3000 4000 5000 6000 7000 Number of active users - 4, 8… Data Rate (in Kbps) Peak Data Rates 7.2Mbps, 14.4Mbps… 100Mbps+ Software Optimization: Maximize Limited CPU Cycles Confidential and Proprietary 11
  • 12. CPE Convergence - Fixed / Mobile Operator Example Customer Premises Standalone Wireline Fixed Voice Wireless Internet Access Mobile Voice Secure aDSL / FTTX Network IPTV Untrusted Access Network (20 – 100Mbps) (Security? QoS?) Set Top Box Femtocell Compelling IPTV story Customer Premises True “Quad-Play” Converged CPE Reduced Churn Increased ARPU “The New Paradigm” Mobile Voice 100% Secure = more content Fixed Voice Internet Access Managed QoS reused for voice Secure aDSL / FTTx Network IPTV (20 – 100Mbps) 4 medium blended applications Drives ROI for FTTx build out Femto-enabled STB Huge CapEx / OpEx savings Confidential and Proprietary 12
  • 13. RF Interference Management Self Organizing Network Femto-to-Macro, Femto-to-Femto Dead spots Dead Spot Network Aware FAP Sniffer mode Dynamic adjustment of Tx power Frequency / code allocation Dead Spot Ping Pong Handoffs Increased signaling traffic in core Handoff delays / Tx power Corner Cases Exponentially Increase RRM’s Complexity Confidential and Proprietary 13
  • 14. FemtoZone Services, Beyond Voice and Data… Monetize Dead Minutes Real-Time Notification Service Integration Real-Time Monitoring Parental Home Control Entertainment 3G / IMS Home Security Core Nanny Home Monitor Automation Macro Network Base Station Digital Home Consistent APIs a Must for Ease of Service Integration Confidential and Proprietary 14
  • 15. 3G Roll-Out Lessons Learned “Build it and they will come” But how fast? Diminishing investor patience Nationwide network build out = cash burn Indoor coverage Higher spectrum = poor indoor signal penetration 2.6GHz > 2.1GHz > 1.8GHz > 900MHz ~60% mobile traffic originates indoors Deliver where they need it 100Mbps data rates in home, office, café, airport… Leverage existing GERAN / 3G HSPA for nationwide coverage Confidential and Proprietary 15
  • 16. LTE Rollout with Femtocells Capacity Demand-based LTE Capacity & LTE Femto Coverage Femto 2.6GHz LTE LTE 2.6GHz Femto Femto 2.6GHz 2.6GHz 3G / HSPA Networks, 2.1GHz Nationwide Network GSM / GPRS / EDGE Networks, 900MHz / 1800MHz Coverage Rural Sub-urban Urban Dense Urban Low Broadband Proliferation High Confidential and Proprietary 16
  • 17. What’s Next … Trillium Powered LTE Femtocells Trillium LTE Femtocell • Reference application and management component Home eNodeB Reference Application • Integrated support for multiple LTE Measure, Dynamic femtocell silicon solutions (Silicon Intercell RB Connection Radio Config & Resource RRM Control Mobility Admission Provision Allocation Convergence Layer) Femtocell • Integrated protocol stacks for LTE- RRC Management Uu, S1, and X2 Home eNodeB PDCP S1-AP Application interfaces RLC eGTP MAC • Fully compliant w/ 3GPP LTE (E- SCTP UTRA) standards (TS 36.x series) Silicon Convergence Layer IPSec • Minimized footprint and optimized PHY IP performance to meet femtocell LTE-Uu X2, S1 constraints • Same protocol suite for femto, pico, and macro eNodeBs Consistent Software Architecture Eases LTE Integration Confidential and Proprietary 17