Evolution for Optical Wireless Communications in Personal Area Network Environment 3 June 2004 Mitsuji Matsumoto GITS, Waseda University
1 st Generation IrDA Desktop PC A personal digital assistants (PDA) boom was occurred at 1990s. Newton, electronic notebook, Personal Communicator, etc. Infrared Technology was used widely for remote control of TV-set, Printer a stereo, an air-conditioner, etc. File Print out transfer ( Ｐ Ｃ Based Point and Shoot) Mobile PC To make De facto -standardization, The IrDA consortium was established in 1993.
Concept of 1 st 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 Inplementation � No Regulation, No IPR
Main Application for recent Infrared Transmission PDI Application Printing Application Personal Data Interchange Personal Data printing � vCard � vCard � vMessage � vCalendar � iMelody e-mail printing � vBookmark � vMessage � e-Squirt Beam URL as Internet shortcut Sync. Application Network Application Phone book Sync. Internet Provider Access � vCard � e-mail Schedule Alert � Internet, Network connection � vCalendar i-mode Mail using vMessage � Braising of large screen � Simple Editing � Data storage
Universal connection
Appearance of Bluetooth 1998 ＆ Ｉ ｒ Ｄ Ａ Cable replacement Point and Beam Data/Voice AP Ad-hoc Network
The Main Features IrDA & Bluetooth S (bps) (PDI) IrDA 100M (Instant Connectivity) UFIR Data Rate 16M Bluetooth VFIR (PAN) 4M (Communication Space) FIR 115K SIR 75K IrDA Control 0.2 1 2 5+ meters Distance
Infrared Transmission speed, Time and Coverage range Time (sec) Cover Range (m) IrDA Control IrDA Control SIR FIR VFIR SFIR 10 Several Minutes Transmission time Transmission time Multi channel Video Compressed Still Picture (Color) Test and Writing Compressed Video Picture 5 Still Picture (Color) Several 10 sec. Still Picture (B&W) Setting IR Device 1 20 Sec SIR FIR Holding IR Device VFIR IrDA Data IrDA Data UFIR 0.2 2.4 ｋ 75k 115.2k 4 M 16 M 100 M Data Speed (bps)
Progress of IrDA 2nd Generation 2nd Generation Progress of � Point and Shoot : High Speed extension UFIR, IrBurst � Networking : Sever and Client Model IrFM
The last ONE meter Solution No High speed Download, Upload Interface wireless technology for Multimedia or Music data at this moment IrBurst SIG Devices Kiosk Gateway Gigabit Back-bone network 1 meter
Development of Technology � High speed Physical Layer: UFIR � High Throughput Protocol: IrBurst
Eye Safe Laser Diode D i f f u s e d l i g h t 7 . 5 m m L i g h t d i f f u s e r L D t i p L D p a c k a g e •the spot size:1000 times H e a t s i n k •measured beam diameter:4mm •100Mbps/1m
Frequency characteristic result according to the distance of LD and LED - 1 0 . 0 0 - 1 5 . 0 0 LD (10cm) - 2 0 . 0 0 - 2 5 . 0 0 B] d - 3 0 . 0 0 [ | 1 LD (20cm) - 3 5 . 0 0 2 S | g - 4 0 . 0 0 o l LED (10cm) 0 - 4 5 . 0 0 2 - 5 0 . 0 0 LED (20cm) - 5 5 . 0 0 - 6 0 . 0 0 1 0 1 0 0 1 0 0 0 周波数 [ M H z ] Frequency (MHz) Fig. 1
Experiment
(by NTTDoCoMo) Evolution of Cellular Service
(by NTTDoCoMo) Creation of New Value
Create one Worldwide standard for “Real eCommerce” IrFM (Infrared Financial Messaging) (Infrared Financial Messaging) IrFM IrFM Mileage Cards IrFM CAT/POS/DEBIT CAT/POS/DEBIT Credit Cards Terminals Terminals Debit Cards Travelers check IrFM IrFM Personal check PDA, Cell phone, watch, etc. PDA, Cell phone, watch, etc. Combine real financial transactions and short distance connectio Combine real financial transactions and short distance connections ns
Example for Infrared Transmission (by NTTDoCoMo)
Mobile commerce (Cmode NTT DoCoMo / Coca-Cola) � Merits Value 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.) � Issues Cell phone operation is cumbersome 2 dimensional (how do we accommodate all age bar codes groups) IrDA Cell phones can implement IrFM easily � Cell phone – Vending Exam ple I tem s can be purchased from a vending m achine ( tickets, coupons, tow n inform ation)
Handsets compatible with External Interface (by NTTDoCoMo)
Applicable field for Optical Wireless Technology Connectivity Networking Connectivity Networking Enterprise Office HIPERLAN HIPERLAN Performance Performance (ETSI) (ETSI) IEEE802.11x IEEE802.11x Home Office IrDA IrDA Personal Personal HomeRF HomeRF Bluetooth™ ™ Bluetooth (1998-2003) A t t r i b u t e s , C o s t A t t r i b u t e s , C o s t (1998 -) (1993-) • • Low Cost Low Cost • Moderate Cost • Moderate Cost • • Moderate Cost Moderate Cost • High Cost • High Cost • Very High Cost • Very High Cost • LAN Speeds • LAN Speeds • 3G/DSL Speeds • 3G/DSL Speeds • LAN Speeds • LAN Speeds • LAN Speeds • LAN Speeds • • Ultra Speed Ultra Speed • • Point Point- -to to- -Point Point • Multi • Multi- -point point • • Multipoint Multipoint • Multipoint • Multipoint • Multipoint • Multipoint • • Conscious Conscious • Unconscious • Unconscious • • Network Protocols Network Protocols • Network Protocols • Network Protocols • • Network Protocols Network Protocols • Private • Private • Public Group • Public Group • Voice & Data • Voice & Data • Data Centric • Data Centric • • Data (Primary) Data (Primary) • Short Range • Short Range • Medium Range • Medium Range • Work Group (WG) • Work Group (WG) • Enterprise WG • Enterprise WG • Enterprise WG • Enterprise WG • • Long Range Long Range • Long Range • Long Range • • Long Range Long Range
Hivision Optical wireless Video transmission system Receiver １ ． ２ ５ Ｇ ｂ ｐ ｓ Transmitter Optical Transmitter Optical by JVC Receiver
Next Generation Infrared Killer Application IrRADIO Receiver 10Mbytes Capacity MP3 decoder player IrRADIO Transmitter 500kbyte/sec MP3 and Java Objects Infrared Radio (IrRadio/IrShower) Application •Broadcast MP3, Java (Infrared Downstream data) •Use IrDA FIR physical layer and IrBRC Protocol
Roadmap for Indoor Optical Wireless Communication 1Gbps １ Gbps Speed UFIr IrBurst Diffusion LD 100Mbps 1 0 0 M b p s 100Mbps LED Diffusion LD 10Mbps 1 6 M b p s 1 0 M b p s L E D 1 9 9 0 1 9 9 5 2 0 0 0 2 0 0 5 2 0 1 0 Y e a r 115kbps
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
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