Doc.: IEEE 802.15-07/0911r0 Submission Nov 2007 Eun Tae Won, SamsungSlide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007

Eun Tae Won, SamsungSlide 1

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [Request for a VLC interest group]Date Submitted: [November 2007]Source: [see next page] Company []Address []Voice:[], FAX: [], E-Mail:[[email protected]]

Re: []

Abstract: []

Purpose: [formation of interest group]

Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Visible Light CommunicationsVisible Light CommunicationsLook Who’s ComingLook Who’s Coming

Telecommunication R&D Telecommunication R&D CenterCenter

2007. 11. 122007. 11. 12

Global Standards & Research

Lab.

Global Standards & Research

Lab.

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Contents

Title : Look who’s coming – VLC

Contents

Ubiquitous connectivity

New Idea for the

Communication?

Introduce of the VLC

Application scenario

Peripheral Interface of VLC

Basic experimental setup

Feasibility Test

Information Broadcasting of VLC

Experimental setup

Feasibility Test

LED as a light source

Network Access

Technical Fields to be discussed

Technical Issues

Conclusion – Look what’s

coming

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Let there beLIGHT !!

Let there beLIGHT !!

Existing or Being everywhere at the same time

Ubiquitous Connectivity

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


There is a large range of new opinion on these consideration.

New Idea for the Communication?

Security

Regulation

Eye safety

Health

Power consumption

Invisibility

Multimedia

Eavesdropping

Frequency restriction

Low price

Human body safe

Eye safety regulation

Low power consumption

Mobility

Ease to use

Using it everywhere

High Speed Invisibility

Price

Convenience

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Visible Light CommunicationVisible Light CommunicationVisible Light CommunicationVisible Light Communication

BandwidthBandwidthSecuritySecurity

CoverageMobility

IRIRU

VU

V

780nm

380nm

1nm

100μm

RF

RF

3cm

1m

vis

ible

vis

ible

IRIRU

VU

V

780nm

380nm

1nm

100μm

RF

RF

3cm

1m

vis

ible

vis

ible

Data

Video

Music

Gam

e

Data

Video,

Sound

Data

Introduce of Visible Light Communication• High speed communication using Visible Light from the LED

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Introduce of Visible Light Communication

Visible Light Communication is one of the newest

communication technology using "Visible Light".

Visibility : Aesthetically pleasing environment

Security : What You See Is What You Send.

Health : Harmless for human body and electronic devices

Unregulated : no room to use more radio frequency

Using inside the aircraft, spaceship, hospital, etc…

Eye safety : regulation

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Public

Information

Private Information

• Private information • information-oriented society

While some welcome, other fear.

Violate personal information

Protect the privacy right.

• Data can be confirmed by your eye

Peripheral

Interface

Information

Broadcast

Application Scenario of VLC

• Public Information• information-oriented society, Deluge of information• You can choose the information

Your Needs & Your Will

Whenever, wherever, whatever you want.

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Application Scenario of VLC

Information

Broadcast

SAMSUNG

English

Chinese

Korean

USB dongleUSB dongle

• Mobile to Mobile

• Mobile to Multimedia

• Keyless door entry

• ID check• E-payment

• Sign Board• E-book• ITS• Airplane• Museum• Product Info.

PeripheralInterface

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Peripheral Interface of VLC

• Peripheral Interface

For the portable mobile device.

Can transmit/receive the digital data using the visible light.

visible TX in a USB dongle, PDA and etc.

• Visible Light Communication visualizes the communication pathway.

• Feasibility of Peripheral Interface.– Coverage, Distance & Ambient light effect.

• Multi-color features at higher speeds will expand its market potential.

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


PIN PD

lens

TIA

Silicon PD

RX lens

free spacefree

space

PatternGenerator

ErrorDetector

PatternGenerator

ErrorDetector

RX

detected data

data pattern

LED

TX lensTX

Coverage

Distance

Basic Experimental Setup

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Feasibility Test (PDA-PC/PC-PC visible link)

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


• Information Broadcasting system

Normal function as indication and illumination devices

Can be used as communication devices for transmitting & broadcasting digital information.

Message Board

E-book

Sign BoardITS (intelligent Transport System)

• Distance and Coverage of Transmission - might be improved as all of RGB LEDs could be modulated.

• Feasibility of Information Broadcasting system - based on signboard.

– Using 4 LED array modules

Picture source: LED Magazine★

★

Information Broadcasting of VLC

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


driver

…

Power Meter

PIN PD

lens

clockPatternGenerator

ErrorDetector

free space

8 red leds

RX

TIA

detected data

driver

…

driver

…

…

data pattern

sign board (4 modules)

32 drivers

sensor

1 module1 module

1 module1 module

driver

…

driver

…

Power Meter

PIN PD

lens

clockPatternGenerator

ErrorDetector

free space

8 red leds

RX

TIA

detected data

driver

…

driver

…

driver

…

driver

…

…

data pattern

sign board (4 modules)

32 drivers

sensor

1 module1 module

1 module1 module

~ 50,000 Lux(Outdoor environment)

Experimental setup (with, w/o ambient)

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


• Red LED : 16 x 16

• Green LED : 16 x 16

…

…

… …

…

…

… …

…

…

… …

…

…

… …

4 modules

…

…

… …

1 module

38 cm

38 c

m

Feasibility Test (visible signboard)

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


• PLC (Power Line Communication) : other application scenario– A kind of communication system using electric power lines

Power line communication Visible light

LampE

lec

tric

al

Sig

na

l

Power line

Power line

PLC Modem

PLC Modem

Network Access

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


• Light-Emitting Diode (LED) :

– A semiconductor diode that emits incoherent light when electrically biased.– energy-saving / more efficient – difficult to damage with external shock

• LED market growth :

– faster response times. – small

0

1000

2000

3000

4000

5000

6000

7000

2004 2005 2006 2007 2008 2009

Automotive

Elctronic Equipmant/other

Traffic SignalIllumination

Signs/Displays

Mobile Appliances

Year

Rev

enue

($ M

illio

n)

[ Visible LED Application ]

Visible LED Market Forecast Growth in the high brightness LED Market

Source : Strategies Unlimited 2005 Source : LED Magazine March 2007

LED as a Light Source

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Considering Factor

• Network Topology• Centralized network between AP and VL device.• Distributed network between VL devices

• To establish visible light link• Initial network entry• Channel access• Media access control

• Modulation• IM (Intensity Modulation)• Sub-carrier

• Resource management (RM) and QoS• Efficient resource allocation to different connections• Reuse of resources

• Power saving/power control

• Sleep/Idle modes for power saving• Indicate arrival of packets to nodes in power save mode• Buffer management for devices in power save mode• Power control for battery management and bandwidth management

• Mobility (micro mobility) • when the RX moving

Technical Fields to be discussed

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Eye Safety

Relatively Low Responsivity of PD

Ambient Light

Network Access Plan

Technical Issues

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Introduce VLC as a new communication

Application scenario using VLC

Define 2 type of information.

Peripheral Interface

Information Broadcasting

Feasibility Test

Other side

Light source (LED), Network access (PLC application)

Technical Field to be discussed

Technical Issues

Conclusion – Look What’s Coming

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


Other Interested Parties

SIEMEMS

France Telecom

Oxford University

ETRI

VLCC

doc.: IEEE 802.15-07/0911r0

Submission

Nov 2007


END

THANK YOU !

Documents

Doc.: IEEE 802.15-07/0911r0 Submission Nov 2007 Eun Tae Won, SamsungSlide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)