Small Cells: How did we get from heresy             to prevailing orthodoxy, and what             challenges lie ahead?   ...
Agenda•     About Real Wireless•     Small cell progress: seven years in four minutes•     Big questions remaining•     As...
About Real Wireless             •   Focused UK-based wireless consultancy,                 bridging the gap between wirele...
2012The Small Cell community has come a long way                                                        Orthodoxy!        ...
But some big questions remain• Femtocells: niche or mass  market?• Public small cells:        •    Aspirin or tonic?      ...
Capacity benefits                                                                                  Aspirin                ...
User experience benefits                                                                       Tonic• Substantial increase...
So why deploy small cells?                                        Small Cells                           Depth and         ...
Where should small cells be placed?Currently no agreement on the placement strategy: several options:                Strat...
When should small cells be deployed and how many areneeded?• On capacity grounds alone, need to consider all enhancement t...
6.2x? 10.1x? 3/3x?What did we find? It depends…      11x? 7x? 13x?                                 TECHNOLOGY             ...
How many small cells depends (inter alia) on how muchspectrum                                                     Source: ...
Different motivations, different locations and volumes                More                    Deeper, broader             ...
Consistent operator views on thetop challenges for small cells   Source: Small Cell Forum LinkedIn   Group. Poll results a...
Small Cells as a Service – SCaaS                                                                                          ...
Which parts of a small cell network could a SCaaSprovider offer? Mobile operator self-provided                            ...
Other issues could help shift small cells from aspirin totonic• Councils and other site providers have a big role to play ...
Overall•     Small cells are increasingly well-accepted as            •       Actual scale of deployment will depend to a ...
Contact             Real Wireless      Tel: +44 (0) 207 117 8514             PO Box 2218        Web: www.realwireless.biz ...
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Small Cells: How did we get from heresy to prevailing orthodoxy, and what challenges lie ahead?

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Small Cells: How did we get from heresy to prevailing orthodoxy, and what challenges lie ahead?

  1. 1. Small Cells: How did we get from heresy to prevailing orthodoxy, and what challenges lie ahead? Simon Saunders04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 1
  2. 2. Agenda• About Real Wireless• Small cell progress: seven years in four minutes• Big questions remaining• Aspirin or tonic?• Why, where, when, how many?• Role of hosted, managed service• Additional issues04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 2
  3. 3. About Real Wireless • Focused UK-based wireless consultancy, bridging the gap between wireless experts and wireless users Some Clients • Team of independent experts with deep technology and broad business experience • Clients include: • Enterprises • Operators • Regulators Some Places Some Technologies • Vendors • Investors and law firms • Experience: • Hundreds of radio systems • Wireless strategy for landlords and enterprises • Founded and chair(ed) Small Cell (Femto) Forum • Ofcom Spectrum Advisory Board04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 3
  4. 4. 2012The Small Cell community has come a long way Orthodoxy! 60% of operators say small cells more important than 3G Femtocell Standard More 3G macrocells for LTE femtos than macros globally 2005 Interference Heresy! management Business case 100x Outside-in capacity always wins!04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 4
  5. 5. But some big questions remain• Femtocells: niche or mass market?• Public small cells: • Aspirin or tonic? • Why? • Where? • When? • How many?• Need to rewrite the RF planning rulebook for the new world04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 5
  6. 6. Capacity benefits Aspirin 80%• Small Cell Forum study of 3G small cells in outdoor environments (but 70% % traffic offloaded general concepts similar for LTE) 60%• Demonstrates that interference 50% management techniques allow 40% 75% small cells and macrocells to coexist 30% 56% in the same frequencies without 20% causing undue interference 10% 21%• Shows that even with conservative 0% deployments, small cells could 1 4 10 offload the majority of subscribers in busy areas, reducing network Small cells per macro load and improving user experience Source: Small Cell Forum04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 6
  7. 7. User experience benefits Tonic• Substantial increase in typical data throughput for all users, whether connected to the small cells or macrocells• Great opportunity for increasing user satisfaction and a strong motivation to install small cells even outside of capacity-limited areas 600% 523%% increase inmedian 400% 315%throughput over 246% All Usersmacrocells 200% 138% Macro Users 58% 31%alone 0% 1 4 10 Small cells per macrocell Source: Small Cell Forum 04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 7
  8. 8. So why deploy small cells? Small Cells Depth and Offload for Improved user Value-added breadth of capacity experience services coverage More Deeper, Better Different broader04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 8
  9. 9. Where should small cells be placed?Currently no agreement on the placement strategy: several options: Strategy Upsides Downsides Exact Hotspots appear, Maximise hotspot ‘geometry’ gains move and disappear locations Macrocell Stable, goes to the heart of the Comparable benefit? edges issue Backhaul Make best of Compromised access available fibre locations performance Subtle balance of Randomly & Break dependence on locations being cheaper vs more in excess planning numerous04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 9
  10. 10. When should small cells be deployed and how many areneeded?• On capacity grounds alone, need to consider all enhancement techniques together, not just small cells with static macro capacity• We tried this for the UK over the period 2012-203004/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 10
  11. 11. 6.2x? 10.1x? 3/3x?What did we find? It depends… 11x? 7x? 13x? TECHNOLOGY 2-100x?? • Depends heavily on economics as well as technology SPECTRUM Capacity TOPOLOGY04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 11
  12. 12. How many small cells depends (inter alia) on how muchspectrum Source: Real Wireless, 2012• One illustration of how the numbers depend on external factors• See http://www.realwireless.biz/mobile-capacity-in-the-uk-major-study- published/ for more04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 12
  13. 13. Different motivations, different locations and volumes More Deeper, broader Better OffloadingWhy? Depth and breadth Improved user congested of coverage experience macrocells Close to shieldedWhere? In hotspots, at Almost buildings, far macrocell edges everywhere from macros 4-8 perHow congested 5-10 per macro? 5-30 per macro?many? macro?04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 13
  14. 14. Consistent operator views on thetop challenges for small cells Source: Small Cell Forum LinkedIn Group. Poll results as at 12/9/1204/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 14
  15. 15. Small Cells as a Service – SCaaS Delivery of mobile services Operator 1 Operator 2 Operator 3 Access to and Small Cell Network operation of small cell network Small Cell Service Provider - SCaaS Access to sites Site provider 1 Site provider 204/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 15
  16. 16. Which parts of a small cell network could a SCaaSprovider offer? Mobile operator self-provided A potential Housing Backhaul SCaaS offering Active Electronics Sites Power Antennas SCaaS more likely to offer Small Cell Mobile Service Provider operator - SCaaS Operator more likely to self-provide04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 16
  17. 17. Other issues could help shift small cells from aspirin totonic• Councils and other site providers have a big role to play • Broadband objectives: Growth, inclusiveness, remote delivery • Can we align their incentives and those of the industry? (Avoid “lamp grab”)• Open interoperability (not just standards) • Well in hand for femtocells • But is it just too hard for public access small cells?• Spectrum sharing models • Witness 3.5GHz in the US • Not always palatable for current operators, but can open up new bands and facilitate rapid refarming • Many locations require a multi-operator model: shared spectrum may be more practical than multi-carrier04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 17
  18. 18. Overall• Small cells are increasingly well-accepted as • Actual scale of deployment will depend to a playing a key role in future mobile networks large degree on how easy/cheap deployment• But there are distinct motivations lead to turns out to be distinct outcomes: • A wholesale “SCaaS” approach could help • Capacity address both backhaul and site issues • Depth of coverage • User experience • Services• These distinct motivations - and progress in the other options for delivering them - lead to very different outcomes for: • Quantity • Timing • Location04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 18
  19. 19. Contact Real Wireless Tel: +44 (0) 207 117 8514 PO Box 2218 Web: www.realwireless.biz Pulborough Blog: realwireless.biz/blog West Sussex Email: info@realwireless.biz RH20 4XB United Kingdom realwireless.biz04/10/2012 © Real Wireless Ltd. 2012, All rights reserved. 19

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