evolution for optical wireless communications in … for optical wireless communications in personal...
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3 June 2004Mitsuji Matsumoto
GITS, Waseda University
Evolution for Optical Wireless Communications in Personal Area Network Environment
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1st Generation IrDA
A personal digital assistants (PDA) boom was occurred at 1990s. Newton, electronic notebook, Personal Communicator, etc.
Desktop PC
Printer
Mobile PC
Infrared Technology was used widely for remote control of TV-set, a stereo, an air-conditioner, etc.
File transfer
Print out
(PC Based Point and Shoot)To make De facto-standardization,The IrDA consortium was establishedin 1993.
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Concept of 1st Generation IrDA
Realization of Connectivity around Note PC (Users Model)Point and shoot (Beam) Develop IrDA Standard Protocol (Introduce the HDLC Technology)Low Cost, Quick InplementationNo Regulation, No IPR
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Main Application for recent Infrared Transmission
Personal Data InterchangevCardvMessageiMelodyvBookmarke-Squirt
PDI Application
Beam URL asInternet shortcut
Personal Data printingvCardvCalendar
e-mail printingvMessage
Printing Application
Phone book Sync.vCard
Schedule AlertvCalendar
Sync. Application
Internet Provider Accesse-mailInternet, Network connectioni-mode Mail using vMessageBraising of large screenSimple EditingData storage
Network Application
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Universal connection
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Appearance of Bluetooth 1998
&
Cable replacement
Ad-hoc Network
Data/Voice AP
IrDA
Point and Beam
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The Main Features IrDA & Bluetooth
SIR
FIR
IrDA Control
VFIR
UFIR
S (bps)
115K
4M
16M
100M
1 5+ meters 0.2
75K
2
IrDA
Dat
a R
ate
Distance
(PDI)
(Instant Connectivity)
Bluetooth (PAN)
(Communication Space)
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Infrared Transmission speed, Time and Coverage range
SFIRVFIRFIR
Multi channel Video
Compressed Video Picture
Cover Range (m)
115.2k 4 M 16 M 100 M
10
Data Speed (bps)
1
5
VFIR UFIR0.2
Time (sec)
20 Sec
Several Minutes
Several 10 sec.
Holding IR Device
Setting IR Device
FIR
2.4k
Still Picture (B&W)
Still Picture (Color)
Transmission timeTransmission time
75k
SIR
IrDA ControlIrDA Control
Test and Writing
IrDA DataIrDA Data
Compressed Still Picture (Color)
SIR
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Progress ofProgress of IrDA 2nd Generation2nd Generation
Point and Shoot : High Speed extensionUFIR, IrBurstNetworking : Sever and Client Model IrFM
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The last ONE meter Solution
Gigabit Back-bone network
1 meter
No High speed Download, Upload Interface wireless technology for Multimedia or Music data at this momentIrBurst SIG
DevicesKiosk Gateway
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Development of Technology
High speed Physical Layer: UFIRHigh Throughput Protocol: IrBurst
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Eye Safe Laser Diode
LD tip
Heat sink
LD packageLight diffuser
Diffused light
•the spot size:1000 times•measured beam diameter:4mm•100Mbps/1m
7.5mm
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Frequency characteristic result according to the distance of LD and LED
-60.00
-55.00
-50.00
-45.00
-40.00
-35.00
-30.00
-25.00
-20.00
-15.00
-10.00
周波数 [MHz]
20log|S21| [dB]
10 100 1000
Frequency (MHz)
LD (10cm)
LD (20cm)
LED (10cm)
LED (20cm)
Fig. 1
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Experiment
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Evolution of Cellular Service(by NTTDoCoMo)
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Creation of New Value (by NTTDoCoMo)
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Create one Worldwide standard for “Real eCommerce”IrFMIrFM (Infrared Financial Messaging)(Infrared Financial Messaging)
Travelers checkPersonal check
Credit Cards
Mileage Cards
Debit Cards
IrFMIrFMCAT/POS/DEBITCAT/POS/DEBIT
TerminalsTerminals
IrFMIrFMPDA, Cell phone, watch, etc.PDA, Cell phone, watch, etc.
Combine real financial transactions and short distance connectioCombine real financial transactions and short distance connections ns
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Example for Infrared Transmission(by NTTDoCoMo)
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Cell phone – Vending ExampleItems can be purchased from a vending machine(tickets, coupons, town information)
MeritsValue added features for Vending Machines (larger amounts can be billed)Purchase items can be selected in advance on the cell phone(no lines)Can be used in other non vending machine devices (Info Kiosks etc.)IssuesCell phone operation is cumbersome(how do we accommodate all age groups)IrDA Cell phones can implement IrFMeasily
2 dimensionalbar codes
Mobile commerce (Cmode NTT DoCoMo / Coca-Cola)
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Handsets compatible with External Interface(by NTTDoCoMo)
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Applicable field for Optical Wireless Technology
IrDA
IrDA
BluetoothBluetooth™™
PersonalPersonal
HIPERLANHIPERLAN(ETSI)(ETSI)
Enterprise Office
HomeRFHomeRF
IEEE802.11xIEEE802.11xHome Office
ConnectivityConnectivity NetworkingNetworking
••Low CostLow Cost••LAN SpeedsLAN Speeds••PointPoint--toto--PointPoint••ConsciousConscious••PrivatePrivate••Short RangeShort Range
••Moderate CostModerate Cost••3G/DSL Speeds3G/DSL Speeds••MultiMulti--pointpoint••UnconsciousUnconscious••Public GroupPublic Group••Medium RangeMedium Range
••High CostHigh Cost••LAN SpeedsLAN Speeds••MultipointMultipoint••Network ProtocolsNetwork Protocols••Data CentricData Centric••Enterprise WGEnterprise WG••Long RangeLong Range
••Very High CostVery High Cost••Ultra SpeedUltra Speed••MultipointMultipoint••Network ProtocolsNetwork Protocols••Data (Primary)Data (Primary)••Enterprise WGEnterprise WG••Long RangeLong Range
(1998-2003)
(1993-)
Per
form
ance
Per
form
ance
Attributes, CostAttributes, Cost••Moderate CostModerate Cost••LAN SpeedsLAN Speeds••MultipointMultipoint••Network ProtocolsNetwork Protocols••Voice & DataVoice & Data••Work Group (WG)Work Group (WG)••Long RangeLong Range
(1998 -)
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Hivision Optical wireless Video transmission system
Receiver
Transmitter
1.25Gbps
Optical Transmitter
Optical Receiver
by JVC
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Next Generation Infrared Killer Application
IrRADIO Receiver10Mbytes Capacity MP3 decoder player
IrRADIO Transmitter500kbyte/sec MP3 and Java Objects
Infrared Radio (IrRadio/IrShower) Application•Broadcast MP3, Java (Infrared Downstream data)•Use IrDA FIR physical layer and IrBRC Protocol
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Roadmap for Indoor Optical Wireless Communication
Year
10Mbps
100Mbps
1Gbps
1990 1995 2000 2005 2010
LED
16Mbps
UFIrIrBurst100Mbps
100Mbps
10Mbps
1Gbps
LED
115kbps
Spee
d
Diffusion LD
Diffusion LD
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Conclusion
IrDA 100Mbps is usefulness for the Interface of High speed Large volume download. In the Personal Area Network environment, many technologies are available and each Technology has proper applicable field.These PAN Technologies will be supported by the PDA or Cellular phone.These approach will be started from Japan