Cambridge Wireless Event 2012 Delivery of Wi-Fi / 3G small cells network into London Steve Brown New Technology Trials Manager Telefonica UK REC/12/083, Issue 3, 1/10/12 Confidential 1
May 29, 2015
Cambridge Wireless Event 2012
Delivery of Wi-Fi / 3G
small cells network
into London
Steve Brown
New Technology Trials Manager
Telefonica UK
REC/12/083, Issue 3, 1/10/12 Confidential 1
REC/12/083, Issue 3, 1/10/12 Confidential 2
Spotters Guide to London Small Cells
Telefonica UK Network Today
• 2G (GSM) Network (Launched 1994)
No. Sites: >11,000
Coverage: 99% Population Coverage
Capacity: 5Gbps
Capability: Voice, Data (240kbps DL/100kbps UL)
• 3G (UMTS) Network (Launched 2004)
No. Sites: >10,000 (U2100 & U900)
Coverage: >90% Population Coverage
Capacity: >50Gbps
Capability: Voice, Data (42Mbps DL/ 5.8Mbps UL)
• 4G (LTE) ...... Central London 4G Trial
No. Sites: +25
Coverage: 40km2
Capacity: >10Gbps
Capability: Voice, Data (150Mbps DL/50Mbps UL)
UMTS
REC/12/083, Issue 3, 1/10/12 Confidential 3
Small Cell Technology
2009 2010 2011 2012 2013 2014 2015
4G1800/2600
4G800/900
3G900
/HSPA+
6 Sector
Cell Split
Year Microcells
Cell Split
6 Sector
Microcells
What do customers want from O2’s network?
Coverage, Capacity & Capability
REC/12/083, Issue 3, 1/10/12 Confidential 4
Telefonica UK Network of Tomorrow
Data Traffic Forecast - Global
REC/12/083, Issue 3, 1/10/12 Confidential 5
Data Traffic Increase in Cities is
expected to increase by > x50
Telefonica UK Macro Site Evolution
3G and 4G will deliver a x8 Capacity Increase on Macrocells
x50 will be required in the high traffic areas
Small cells are the only option
Technology @ Site Peak User
Throughput
Cumulative Average Site
Throughput
4G+ (2015) – LTE-A + HSPA++ 150Mbps 160 Mbps
4G (2013) – LTE + HPSA+ 100Mbps 110 Mbps
3G HSPA+ (2012) – HSPA+42 17.7 Mbps 25.2 Mbps
3G HSPA (2011) – HSPA 14.4 17.7 Mbps 18.9 Mbps
3G (2004) – HSPA 3.6 6 Mbps 5.4 Mbps
2G (2000) - GPRS/EDGE 40 kbps 120kbps
Site Throughput
Capacity
REC/12/083, Issue 3, 1/10/12 Confidential 6
x8
3G Macrocell
Limited to 7 x 2 carrier
macrocells within 1x1km
area
2100 MHz (1) – 1st carrier
2100 MHz (2) – 2nd carrier Network 2011
REC/12/083, Issue 3, 1/10/12 Confidential
Macrocell
Microcell Picocell
Busiest 200x200m area
requires 6 microcells
plus 3 carrier
picocells/public femto
cells
Busy areas require 50m
radius microcells
Limited to 7 macrocells
within 1x1km area
Microcell range limited
to 150m due to building
loss and corner loss
All microcell deployed with 3
carriers (2xU2100 1xLTE2600).
2100 MHz (1)
2100 MHz (2)
900 MHz (1)
900 MHz (2)
800/1800/2600 MHz Network 2015
REC/12/083, Issue 3, 1/10/12 Confidential
2009-2010: Street Level “Micro” Cells
Upgrading of 2G Street Level Microcells to 3G Micro
REC/12/083, Issue 3, 1/10/12 Confidential 9
Macrocell equipment and
NTE Located in basement/
store cupboard
Bellbox antenna
Street Level
RF Feeder
Erl
an
gs
Cell
Microcell/Macrocell RSCP
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
0 25 50 75 100 125 150 175 200
Distance (m)
RS
CP
(d
Bm
)Macro RSCP [dBm]
Micro RSCP [dBm]
•Landlords
•Volumes
•Cost
•Time
•Maintenance
•Transmission
•Technology
•Traffic Capture
•Macrocell
•Shared Carrier
Traditional Microcell: Very High Cost per kE/Mbps/km2
2011: Small Cell Total Cost of Ownership Modelling
3rd Party Pole, Public Indoor Femto & WLAN looking most promising
REC/12/083, Issue 3, 1/10/12 Confidential 10
REC/12/083, Issue 3, 1/10/12 Confidential 11
Public Wifi ... but also exclusive access to
Central London Street Furniture
O2 Wifi
2012: O2 Metro Wifi Deployment Areas
All priority areas to be delivered by Summer 2012
REC/12/083, Issue 3, 1/10/12 Confidential 12
High Level Delivery Plan
REC/12/083, Issue 3, 1/10/12 Confidential 13
Apr-12 May-12 Jun-12 Jul-12Dec-11 Jan-12 Feb-12 Mar-12
Procurement
Design & Development
Site Surveys, Design & Approval Ph 1a
Optim
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Deplo
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Backhaul Orders & Delivery
Hub Deployment Optimisation
Site Surveys, Design & Approval Ph 1b
Deployment
Macro Hub Survey, Plan, & Deploy
Exhibition Rd
Small Cells
Small cells Rio Style!
REC/12/083, Issue 3, 1/10/12 Confidential 14
Small cells London
High Level Delivery Plan
REC/12/083, Issue 3, 1/10/12 Confidential 15
Apr-12 May-12 Jun-12 Jul-12Dec-11 Jan-12 Feb-12 Mar-12
Procurement
Design & Development
Site Surveys, Design & Approval Ph 1a
Optim
isation
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Backhaul Orders & Delivery
Hub Deployment Optimisation
Site Surveys, Design & Approval Ph 1b
Deployment
Macro Hub Survey, Plan, & Deploy
Exhibition Rd
High Level Delivery Plan with Planning Approval
REC/12/083, Issue 3, 1/10/12 Confidential 16
Jul-12May-12 Jun-12Apr-12Dec-11 Jan-12 Feb-12 Mar-12
Procurement
Design & Development
Site Surveys, Design & Approval Ph 1a
Optim
isation
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Deplo
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Macro Hub Survey, Plan, & Deploy
Backhaul Orders & Delivery
Hub Deployment
Op
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ion
Dep
loym
ent
Site Surveys, Design & Approval Ph 1b
Local Authority Planning Approval
Exhibition Rd
Westminster
Example Install: Parliament Square
Transmission Hub (7762)
Access Point (8800)
Type 1 Install Type 2 Install
REC/12/083, Issue 3, 1/10/12 Confidential 17
Access Point and Transmission Equipment
Ruckus 7762 5GHz
Remote Terminal (Wi-Fi)
239x195x141mm
Weight 1.9kg
Ruckus 8800
Access Point (Wi-Fi/Cellular)
380x310x170mm
10kg
REC/12/083, Issue 3, 1/10/12 Confidential 18
UK Small Cells – (Wifi + 3G)
Adaptor plates
attaches to Wifi
unit with two Flat
head M6 screws
per side ALU Femto Unit
mounts to adaptor
plates.
Confidential 19 REC/12/083, Issue 3, 1/10/12
High Level Design - Project Metro Network Architecture + Fibre
Confidential
O2
O2
Central Hub
Ethernet
Fibre Link
P-MP
Microwave
28GHz
NTE
O2 Existing O2 Macro Site
Point to Multi Point Dish
Radio Access Point
Street Lighting Column with
WiFi Access Point
5Ghz
5Ghz
Fibre to
Post
Fibre to
Post
O2 WiFi
Core Network /
Data Centre O2
28Ghz
28Ghz
REC/12/083, Issue 3, 1/10/12
High Level Design – Exhibition Road
Confidential 21 REC/12/083, Issue 3, 1/10/12
High Level Design – Exhibition Road
• Target Outdoor RxLev >= -90dBm.
• The design consists of 9 APs.
• The design will deliver an estimated
capacity of 9x15Mbps = 135Mbps
within the planned coverage area.
• Therefore delivering 1350Mbps/km2
• Already shown 50Mbps DL & UL
during initial testing
Confidential 22 REC/12/083, Issue 3, 1/10/12
Exhibition Road: Banner Design
Confidential 23 REC/12/083, Issue 3, 1/10/12
Exhibition Road:
Actual Install
Confidential 24 REC/12/083, Issue 3, 1/10/12
High Level Design – Trafalgar Square
Confidential 25 REC/12/083, Issue 3, 1/10/12
London Small Cells Traffic Offload
Confidential 26 REC/12/083, Issue 3, 1/10/12
O2 wifi Offload Analysis
O2 wifi is a “open to all” service – not just O2 customers
O2 Metro wifi is a predominantly outdoor/first window network
Indoor areas typically covered by other indoor wifi networks
Confidential 27 REC/12/083, Issue 3, 1/10/12
O2 Metro Wifi Deployment
O2 Metro Wifi deployed to highest traffic areas in Central London
Confidential 28 REC/12/083, Issue 3, 1/10/12
O2 Metro Wifi & Cellular Offload
O2 Metro Wifi area includes 165 2G sectors, 244 3G sectors
Confidential 29
Phase 1 Areas
Covent Garden
Kensington High Street
Exhibition Road
Leicester Square
Oxford Street
Parliament Square
Piccadilly
Regent Street
Trafalgar Square
REC/12/083, Issue 3, 1/10/12
O2 Metro Wifi Surrounding 3G Cellular Traffic Offload
Confidential 30
O2 wifi carrying around 15-20% of 3G traffic and
offloading around 5-10% O2 data traffic thus far
Volumes slowly ramping up.
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
0
100
200
300
400
500
600
18
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24
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Tota
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ata
Vo
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Gb
yte
s]
Week Commencing
3G HSDPA & O2 Wifi Daily Data Volume [GBytes] - All Areas
All Areas 3G
All Areas O2 wifi
O2 wifi (O2 Subs)
O2 wifi Onload (O2 Subs) %
Official O2 Wifi Launch (25/07/12)
Olympics
REC/12/083, Issue 3, 1/10/12
O2 Metro Wifi Traffic per Area
Confidential 31
Amount of traffic offloaded event/weather dependent.
Commercial areas (Oxford / Kensington High Street) busiest areas
0
5
10
15
20
25
30
35
40
45
50
07
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Tota
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ata
Vo
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Gb
yte
s]
Week Commencing
O2 wifi Daily Data Volume [GBytes] - Individual Areas
Covent Garden wifi
Exhibition Road wifi
Leicester Square wifi
Oxford Street wifi
Parliament Square wifi
Piccadilly wifi
Regent Street wifi
Trafalgar Square wifi
Kensington High Street wifi
REC/12/083, Issue 3, 1/10/12
O2 Metro Wifi Traffic per Area - Daily
Confidential 32
Office hours for Parliament Square
with lots of upload just before the
6pm news ...
Kensington High Street – PM
activity – in bed by 1pm!
Oxford Street – Get up late – Stay up
late!
Throughputs average over 3 minutes
50% traffic from Apple devices!
REC/12/083, Issue 3, 1/10/12
Geo Traffic Data Confidential
Other Small Cell Options for Investigation
Confidential 34
Metro-femto located
at top of column
Enclosure suitable for housing:
- A.C. power isolator (on/off switch)
- AC to DC power supply (for xDSL modem)
- xDSL modem
- Power over Ethernet injector
Enclosure suitable for housing:
- Radio Unit
- A.C. power isolator (on/off switch)
- AC to DC power supply (for xDSL modem)
- xDSL modem
- Potentially point-to-multipoint modem.
Antenna located
at top of column
Small enclosure 1000 (h) x 300 (d) x 500 (w) mm
(approx.)
Large enclosure 1200 (h) x 700 (d) x 800 (w) mm
(approx.)
On-column enclosure
Enclosure suitable for housing:
- A.C. power isolator (on/off switch)
- AC to DC power supply (for xDSL modem)
- xDSL modem
- Power over Ethernet injector
- Potentially Flexi-lite Node-B
Metro-femto or
antenna located
at top of column
600 (h) x 200 (d) x 500 (w) mm
(approx.)
REC/12/083, Issue 3, 1/10/12
Small Cells - Solar Pole Concept
Confidential 35
Telefonica UK’s first Solar Powered 3G/4G/Wi-Fi Access Point
REC/12/083, Issue 3, 1/10/12
And Finally:
Three legs on which the small cell stands (or falls!)
36 Confidential
Small Cells
Physicals
Visual appearance
Enclosures
On-pole mounting
On-building mounting
Power
Lighting circuit
New feeds
Fuses/Meters
Backhaul
Copper pairs
Optical fibre
Radio
REC/12/083, Issue 3, 1/10/12
In Summary
London “activities” in 2012 have accelerated the deployment of small
cells for Telefonica UK
• 3rd Party Poles, Indoor open Femto and Wifi are the way forward
• Proven that lamppost mounted small cells are feasible – London Lampposts
• Both fibre and Microwave is suitable for backhaul
Next steps
• Study further Femto/Wifi and Micro/Wifi integration
• Study further the interaction with the Macro layers (EAP-SIM)
• Further prove 5GHz/Fibre, 5GHz/28GHz
• Investigation of other small cell backhaul technologies
› VDSL
› 28GHz Mesh, 60GHz P2P
Small cells need to also come with a small cost!
Confidential 37 REC/12/083, Issue 3, 1/10/12
Thank you for your time
REC/12/083, Issue 3, 1/10/12 Confidential