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
Eun Tae Won, SamsungSlide 2
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
Eun Tae Won, SamsungSlide 3
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
Eun Tae Won, SamsungSlide 4
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
Eun Tae Won, SamsungSlide 5
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
Eun Tae Won, SamsungSlide 6
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
Eun Tae Won, SamsungSlide 7
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
Eun Tae Won, SamsungSlide 8
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
Eun Tae Won, SamsungSlide 9
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
Eun Tae Won, SamsungSlide 10
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
Eun Tae Won, SamsungSlide 11
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
Eun Tae Won, SamsungSlide 12
Feasibility Test (PDA-PC/PC-PC visible link)
doc.: IEEE 802.15-07/0911r0
Submission
Nov 2007
Eun Tae Won, SamsungSlide 13
• 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
Eun Tae Won, SamsungSlide 14
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
Eun Tae Won, SamsungSlide 15
• 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
Eun Tae Won, SamsungSlide 16
• 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
Eun Tae Won, SamsungSlide 17
• 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
Eun Tae Won, SamsungSlide 18
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
Eun Tae Won, SamsungSlide 19
Eye Safety
Relatively Low Responsivity of PD
Ambient Light
Network Access Plan
Technical Issues
doc.: IEEE 802.15-07/0911r0
Submission
Nov 2007
Eun Tae Won, SamsungSlide 20
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
Eun Tae Won, SamsungSlide 21
Other Interested Parties
SIEMEMS
France Telecom
Oxford University
ETRI
VLCC
doc.: IEEE 802.15-07/0911r0
Submission
Nov 2007
Eun Tae Won, SamsungSlide 22
END
THANK YOU !