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Watch our video of Will Franks, Ubiquisys CTO and Co-founder, talking about mobile usage patterns and smart cells at this year's SCWS event in London.
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Small Cells and Smart Cells
Will Franks Founder and CTO
Part 1 Small Cells
Small Cells: mapping evolving names to their locations
3 CONFIDENTIAL © Ubiquisys 2011
Location >
Indoor Outdoor
Home Enterprise Office, campus,
hotel
Rural
Primary driver >
Voice coverage Voice coverage Voice coverage
Old name >
Primary driver >
Coverage and end user experience
Coverage (voice and
data)
Data capacity Data capacity Voice coverage
Small cell name >
Urban City centres
Voice Coverage and capacity
Femtocell Picocell Microcell
Femtocell Metro Indoor
Metro Outdoor
Rural Small Cell
Before the mobile data revolution
After the mobile data revolution
Enterprise Small Cell
FEMTOCELL TECHNOLOGY MACROCELL TECHNOLOGY
4 CONFIDENTIAL © Ubiquisys 2011
Source: ABI 2011
Outdoor small cell: $1.4B
Indoor small cell: $1.5B
Enterprise: $3.8B
Residential: $1.0B
A $7.7B opportunity
Metro Indoor: the small cell sweet spot
Acute growth in data demand from smartphones
Abundant sites and backhaul
Key Asian city deployments in malls, coffee shops and transport hubs
50,000 public access small cells deployed
200,000 open access femtocells deployed
5 CONFIDENTIAL © Ubiquisys 2011
Example Metro Indoor hotspot stats Smart phones up to 90% of phone types in cell
Traffic dominated by data/signaling Channel occupation data/voice -‐ up to 10 to 1
Data sessions in 24hrs up to 10,000
Voice sessions in 24hrs up to 1,000
Average UE voice traffic up to 70mE
Average UE data traffic up to 200mE
Data dominated by chatty smartphone apps
Signaling procedures per UE in Busy Hour up to 50 per user
Highly transient users Average time in cell -‐ from 7mins to 30 mins
6 CONFIDENTIAL © Ubiquisys 2011
Smartphone traces Café hotspot
Macro cells average traffic in a medium/large size area, while a small cell covers a specific area where traffic is heavily correlated.
Example is of a café in a business district, where people get their coffee and immediately fire up their browser or social network page
UE RAB map over 9min period
Extremely high data activity, some Smartphones are virtually always on
RAB map key: HSDPA/HSUPA, Multi-‐RAB, CS, FACH, SRB
Mobile users
Time
Managing Cell Capacity
8 CONFIDENTIAL © Ubiquisys 2011
200
50
75
Users
Traffic (mErlang)
50 130 190
num x traffic = 9.8 (E)
max
230
40
Note: Using log scale on axis
Trade-off between users served and average data per user initially, then expand capacity as needed
The challenge for public access small cells
The challenge IS NO LONGER about headline data rates or call capacity.
The challenge IS ALL about meeting network KPIs in a highly variable high traffic environment:
Cell overloading
Camp-‐on attempts
Data vs signalling
And achieving an efficient TCO
9 CONFIDENTIAL © Ubiquisys 2011
Ubiquisys G7 series Multi-mode Small Cell
3G LTE WiFi
Automatic cell setup zero touch installation
10 CONFIDENTIAL © Ubiquisys 2011
ActiveRadio® : femtocell fundamentals
Open Mode operation
Automatic cell sizing: preserves the target quality of service in hotspots.
Loaded cell adaptive radio resource management: continuous monitoring of the radio environment even while serving active users.
Hotspot robustness: ensures the best possible quality of service during high spikes of transient users.
Edge processing of smartphone signalling : to significantly reduce the load on the core network.
ActiveCell
Part 2 Smart Cells
11 CONFIDENTIAL © Ubiquisys 2011
Backhaul defines small cell hotspot experience
But Backhaul is the limiting factor Limited capacity, heavily loaded with 3G/4G/WiFi traffic, highly variable performance
High quality mobile experience Small cells provide high-speed, short-range signal with low contention
Installed in public places: cafes, malls, stores, rail stations, venues etc Multi-technology: 3G, WiFi and LTE in one box Key characteristics
Now add our computing platform
Strategic collaboration between Ubiquisys and Intel
Compact, comms-‐tuned compute platform
Core® and Atom® variants available, with hardware accelerators
40GB+ SSD and 4GB+ RAM
13 CONFIDENTIAL © Ubiquisys 2011
Accelerators CPU
An ultra-compact server with massive inline processing capability
Enter the Smart Cell
SMART CELL = SMALL CELL + Hi SPEC SERVER + CLEVER APPS
Edge Cloud PLATFORM Edge Cloud APPLICATIONS
Intelligent 3G/LTE small cell
Hi spec comms-‐tuned CPU
Massive storage and RAM
Multi-‐mode WiFi
Cache and content
Video adaptation
Wireless Policy Mgmt.
Demo use case: Cache applications
1. Proactive cache
2. Predictive cache
First play from cloud
Next plays from cache
Timed download during low traffic periods on backhaul
Content from cache
Cuts backhaul traffic Improves user experience
More Edge Cloud applications for Smart Cells
Inline processing apps McAfee Global Threat Intelligence
URL filtering
Adaptive video shaping
Deep Packet Inspection (DPI)
Platform applications Cellular-‐WiFi Policy Management
Video/ Ad Server
CDN clients
Upload Proxy Delivers photos/videos to proxy app in smart cell to save time and extend phone battery life
Core network functions that protect users. Running more efficiently at the edge of the network.
Running apps closer to mobile users to deliver a better experience
Summary
Small Cells come in many flavours for different use cases
Home Femtocells, Enterprise Small Cells, Metro Indoor, Metro Outdoor and Rural
We need Metro Indoor and Outdoor to meet the data demand
As proven in Asian Markets already
Optimised Femtocell based technology 3G/LTE plus WiFi will deliver the majority of Small Cell segment needs
Smart Cells
Optimise the end user experience
Optimise the backhaul performance
Offer new Edge Cloud opportunities for Service providers