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Prof Harald Haas, CTO

Visible LightCommunications

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Format

What is VLC (or Li-Fi)?

Why?

How it works

The opportunity

Applications

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What is Li-Fi?

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Li-Fire demo

HD video streaming from lamp.

http://localhost/var/www/apps/conversion/tmp/scratch_5/Li-Fire_pureVLC%20(Apple%20TV).m4vhttp://localhost/var/www/apps/conversion/tmp/scratch_5/Li-Fire_pureVLC%20(Apple%20TV).m4v

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$1.2TrillionProblem

Why?

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Demand for wireless data

W

IRELESSD

ATAUSE CAGR

106%

(Cisco)

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Solution

VLC is a potential solution

Proliferation of SSL

10,000x more visible lightspectrum

2,000x data density of radio

Cost advantages

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Early Visible Light

Communication

The Photophone, 1880

Alexander Graham Bell

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Early Visible Light

Communication

Flash-matic, 1955

Zenith, Eugene Polley

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Early Visible Light

Communication

Light Telephone, 1971

Nintendo, Gunpei Yokoi

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- Lowcost

- Low optical power

- Low data rate

- Low cost

- High opticalpower

- High data rate

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Roadmap

PoC SLDKLi-FiCommercialConsumer

LightingCommsproducts

componentslicensing

prototype

2011 2012 2013

S Li h i D l

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Smart Lighting Development

Kit

LED driverunit

LED lightfixture

VLCtransceiver

Photodetector &Transceiver unit

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Home Li-Fi

PLC

Wi-Fibroadband

mains power

lighting circuit

Up to 1 Gbps over lighting circuit (Li-Fi)Up to 100 Mbps over radio (Wi-Fi)VLC provides congestion relief on downlink x10

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Commercial Li-Fi

Up to 1Gbps per fixture(Li-Fi) Up to 100Mbps over radio(Wi-Fi)

VLC provides congestionrelief on downlink x100 Universal Power over

Ethernet 60W of power full lighting control high data rates

UPoEbroadband

Ethernet cables

Wi-Fi

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Common misconceptions

You cannot dim the lights.

The lights flicker.

This is for downlink only.

There will be interference fromsunlight.

Lights need to be on so this is

inefficient.

You must have line-of-sight.

This is a disruptive technology.

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The opportunity- Lighting Industry $100 billion

- Wireless Communications $1.2 trillion- Lights can provide wireless comms.

- LED lighting will become ubiquitous

- VLC is a value added service forlighting

- VLC is an alternative service forcomms

- Copper cable -> optical cable- Microwave LoS -> Free space optical(FSO)

- Indoor wireless -> VLC?

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The opportunity

- You tend to illuminate in the sameplaces you wish to communicate.

- Lighting already provides

infrastructure

power, potentialback-haul cables.

- Lighting industry already hasdistribution channels to the

correct customers.

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Application Areas

Smart Lighting, Smart Buildings Mobile Connectivity

Wi-Fi Spectrum Relief

Indoor Positioning Systems

Hazardous Environments Vehicle & Transportation

Defence & Security

Hospital & Healthcare

Aviation Underwater Communications

Toys

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LightMessage App

Text message from a light bulb!

http://localhost/var/www/apps/conversion/tmp/scratch_5/pureVLC_LightMessage720.movhttp://localhost/var/www/apps/conversion/tmp/scratch_5/pureVLC_LightMessage720.mov

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www.pureVLC.com

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Network Capacity per Device

Forecast Traffic per Device

Network Capacity per Device

YearNetworkcapacity/Forecasttraffic(MB/Month)

Shortfall9

7.2

%