wireless_ir_spectrix_11-5-99.ppt
TRANSCRIPT
The wIReless LAN for people in motion04/13/23
Infrared Data Systems
Jeff [email protected]
www.spectrixcorp.com
220 Terrace Drive
Mundelein, IL 60060
847.837.8650
Fax: 847.837.8670
The wIReless LAN for people in motion04/13/23
Infrared Data Systems - Introduction
TV Remote Controls give incorrect image of IR
High profile IrDA limits view of IR as short distance Point-n-Shoot
Diffuse IR serves applications requiring: greater distances than IrDA multiple access, multi-point communications less concern for line-of-sight and orientation of device
The wIReless LAN for people in motion04/13/23
Diffuse Infrared Applicability
Aircraft Cabins Present an Ideal Environment for Diffuse-Light Communications
The wIReless LAN for people in motion04/13/23
What is Diffuse IR?
Classification of Infrared Transmitters narrow beam: infrared laser directed: narrow Field of View (FOV) -- like a flashlight diffuse: wide FOV -- like an unshaded light bulb
Classification of Infrared Receivers narrow Field of View (FOV) detectors using imaging
optics wide FOV: detectors using non-image optics
The wIReless LAN for people in motion04/13/23
What is the Spectrix System?
Wireless Diffuse Infrared network
Aviation-compliant under ARINC 763 (IEEE 802.11
interoperability)
IEEE 802.3 compatible
4 Mbps bandwidth (10-16 Mbps in Y2000)
Secure and non-interfering communications
Supports up to 250 wireless nodes per LAN segment
16,000 square feet coverage per LAN segment
Guaranteed service levels
The wIReless LAN for people in motion04/13/23
Spectrix Wireless Diffuse Infrared Network
Fixed Workstation on Ethernet LAN
PEDs250 per LAN SegmentEthernet Cabling
8-16 Port Infrared Hub
Base Station
Infrared Antenna
Network Interface Card &SpectrixLite Interface Card
1,000 sq.ft. per Antenna
Docking Portable PC on Ethernet LAN
The wIReless LAN for people in motion04/13/23
Diffuse Infrared Network Cabin Implementation
The wIReless LAN for people in motion04/13/23
Today’s Spectrix Network Configuration
NetWareServer
ODI(IPX)
UNIXHost
NIC
NIC
EthernetNICEthernet
Base Station
SpectrixLiteNetworkManager
FilteringBridge
Function
IR Hub Antenna
SpectrixLite
WirelessLAN
Adapter
SpectrixLiteNDISDriver
WindowsNTServer
TCP/IP
NICWindows98/95/NT/3.xPlatforms
WirelessLAN
Adapter
SpectrixLiteODI
DriverDOS Platform
TCP/IP
The wIReless LAN for people in motion04/13/23
Next-Generation Spectrix System
NetWareServer
ODI(IPX)
UNIXHost
NIC
NIC
Ethernet
SpectrixLiteNetwork Manager
IR Hub Antenna
SpectrixLite
WirelessLAN
Adapter
SpectrixLiteNDISDriver
WindowsNTServer
TCP/IP
NICWindows 2000/98/95/NT/3.xPlatform
WirelessLAN
Adapter
SpectrixLiteODI
DriverDOS Platform
TCP/IP
WindowsPlatform
NICTCP/IP
PC CardDongle
PC CardDongle
The wIReless LAN for people in motion04/13/23
Diffuse IR Applications
Commercial Aviation (Cabin LAN “C-LAN”)
Secured Military Installations
Offices
Financial Trading Floors
Classrooms
Hospitals
The wIReless LAN for people in motion04/13/23
Diffuse IR Compared to FastIR
Diffuse IRFastIR
Transmitter FOV: Diffuse (120º) Directed (30º)
Receiver FOV: Wide (120º) Narrow (30º)
Communications: Multi-point 1-to-1
Link Range 16.5 m 1 m
The wIReless LAN for people in motion04/13/23
Diffuse IR compared to Radio Frequency
Diffuse IRRF
Data Rate: 4-16 Mbps 2 Mbps
RF Interference: Not Applicable Inclined
Security: Contained Hackable
Regulation: Open/Publicly Crowded/License Available Required
Health-Safety Concerns: No Maybe
Location Reporting: Yes No
The wIReless LAN for people in motion04/13/23
Diffuse IR LAN Designs IEEE 802.3 - Cabled Ethernet LANs
MAC Protocol: CSMA/CD (Carrier Sense, Multiple Access/Collision Detection)
IEEE 802.11 - Wireless LANs MAC protocol: CSMA/CA
(Carrier Sense, Multiple Access/Collision Avoidance) Roaming Hidden Nodes IR Modulation: 16-PPM (1Mbps) and 4-PPM (2 Mbps) 10 meters
Spectrix MAC Protocol: TDMA
(Time Division, Multiple Access with Deterministic Reservation & Polling) IR Modulation: RTZBI (4-16 Mbps) Roaming Supports large number of nodes (250/LAN segment) 16.5 meters