Evolution for Optical Wireless Communications in Personal Area - - PowerPoint PPT Presentation
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,
A personal digital assistants (PDA) boom was
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
To make De facto-standardization, The IrDA consortium was established
in 1993.
Personal Data Interchange
vCard vMessage iMelody vBookmark e-Squirt
PDI Application
Beam URL as Internet shortcut
Personal Data printing
vCard vCalendar
e-mail printing
vMessage
Printing Application
Phone book Sync.
vCard
Schedule Alert
vCalendar
Internet Provider Access
e-mail Internet, Network connection
i-mode Mail using vMessage
Braising of large screen Simple Editing Data storage
Network Application
Cable replacement Ad-hoc Network Data/Voice AP
Ｉ ｒ Ｄ Ａ
Point and Beam
SIR FIR IrDA Control VFIR UFIR S (bps) 115K 4M 16M 100M 1 5+ meters 0.2 75K 2
Data Rate
Distance
(PDI) (Instant Connectivity)
(PAN) (Communication Space)
SFIR VFIR FIR Multi channel Video Compressed Video Picture Cover Range (m)
115.2k 4 M 16 M 100 M
10
Data Speed (bps)
1 5
VFIR UFIR
0.2 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 time Transmission time
75k
SIR IrDA Control IrDA Control Test and Writing IrDA Data IrDA Data Compressed Still Picture (Color) SIR
Point and Shoot : High Speed extension
Networking : Sever and Client Model
No High speed Download, Upload Interface wireless technology for Multimedia or Music data at this moment IrBurst SIG
Devices Kiosk Gateway
7 . 5 m m
.
5 .
.
5 .
.
5 .
.
5 .
.
5 .
.
周波数 [ M H z ] 2 l
| S 2 1 | [ d B]
1 1 1
Frequency (MHz)
LD (10cm) LD (20cm) LED (10cm) LED (20cm)
(by NTTDoCoMo)
(by NTTDoCoMo)
Travelers check Personal check Credit Cards Mileage Cards Debit Cards
IrFM IrFM CAT/POS/DEBIT CAT/POS/DEBIT Terminals Terminals IrFM IrFM 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
(by NTTDoCoMo)
Cell phone – Vending Exam ple
I tem s can be purchased from a vending m achine ( tickets, coupons, tow n inform ation)
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.)
Cell phone operation is cumbersome (how do we accommodate all age groups) IrDA Cell phones can implement IrFM easily 2 dimensional bar codes
(by NTTDoCoMo)
Personal Personal
Enterprise Office
Home Office Connectivity Connectivity Networking Networking
Low Cost
LAN Speeds
Point-
to-
Point
Conscious
Private
Short Range
Moderate Cost
3G/DSL Speeds
Multi-
point
Unconscious
Public Group
Medium Range
High Cost
LAN Speeds
Multipoint
Network Protocols
Data Centric
Enterprise WG
Long Range
Very High Cost
Ultra Speed
Multipoint
Network Protocols
Data (Primary)
Enterprise WG
Long Range
(1998-2003) (1993-)
Performance Performance A t t r i b u t e s , C
t A t t r i b u t e s , C
t
Moderate Cost
LAN Speeds
Multipoint
Network Protocols
Voice & Data
Work Group (WG)
Long Range
(1998 -)
Receiver Transmitter
１ ． ２ ５ Ｇ ｂ ｐ ｓ
Optical Transmitter Optical Receiver
by JVC
IrRADIO Receiver 10Mbytes Capacity MP3 decoder player IrRADIO Transmitter 500kbyte/sec MP3 and Java Objects
Infrared Radio (IrRadio/IrShower) Application
Y e a r
10Mbps 100Mbps １ Gbps
1 9 9 1 9 9 5 2 2 5 2 1
L E D
1 6 M b p s
UFIr IrBurst 100Mbps
1 M b p s 1 M b p s 1Gbps
LED
115kbps
Speed
Diffusion LD Diffusion LD