View
216
Download
0
Category
Preview:
Citation preview
Megaconference IV and
Mobile Satellite Video
Dr. Bob DixonChief Research Engineer
OARNet Ohio State University
H.323 Forum Conference Nov 15, 2002 New York, New York
The Megaconference is:
World’s largest Internet video conference. EVERYONE is invited.
A professional conference with no central location.
The speakers and audiences are distributed throughout the world. Fully interactive.
Worldwide network of Multipoint Control Units, cascaded together.
A test and a push for the state of the art.
Megaconference Growth
Year Number of Organizations Participating----------- ----------------------------------
1999 50
2000 100
2001 200
2002 400 ???
We cannot continue to grow at this rate.
Quantity vs Quality?
Raise the technical bar for participation
768K speed rather than 384K
H.263 codec rather than H.261
ViDeNet Global Dialing System
Must successfully participate in at least one rehearsal
Schedule Details
The date is December 10, 2002
Registration deadline is Nov 27.
Presentation proposal deadline is Nov 15.
Rehearsals are Nov 15, Nov 26 and Dec 3.
Three sessions. Everyone can be in all.
Early - emphasize Europe Midday - emphasize Western Hemisphere Late - emphasize Asia and Pacific
Megaconference Contents Nine presentations will be given by expert end-users of H.323 technology, on the topics of Distance Learning, and Far Away Places.
A roving satellite dish team will participate from a number of exotic locations.
An international game, with a prize.
A roll call, to give everyone a chance to say hello to the world. Fantastic door prizes.
The Megacon café, where anyone can talk to anyone.
MEGACONFERENCE IV
Preliminary Program, all times EST, durations in parentheses.Dec 10, 2002
Session I - Best time for Europe 8:00am Intro (15) 8:15 Papers. (90) 9:45 Cafe (15) 10:00 Game (30) 10:30 Winners Announce (15) 10:40 Roll Call (30...)
Session 2 -Best time for Western Hemisphere1:00PM Intro (15) 1:15 Papers (90) 2:45 Cafe (30) 3:15 Roll Call (30...)
Session 3 - Best time for Far East and Pacific 6:00PM Intro (15) 6:15 Papers (90) 7:45 Cafe (30) 8:15 Roll Call (30...)
Comparable Spin-off Events
Megaconference 2.5 August 2001
Medical Megaconference October 2002
Transportable Satellite Internet System
Transportable System Design Goals
Provide high-speed Internet access for ALL purposes, including computers, telephones and PDAs.
Inexpensive to build and operate
Off-the-shelf parts for easy duplication
Easy to operate by one person with one day training, with no hand tools.
Small and light
Reliable and adaptable to diverse field conditions
Easily modified
Some Initial ApplicationsProvide distance learning in underconnected locations such as rural areas and inner cities.
Demonstration / Evaluation for a future fixed installation.
Link field research to campus computers and laboratories and collaborators worldwide.
Link field instruction and demonstrations to campus classrooms.
Link field activities to remote databases, eg via PDAs.
Special events, conferences, fairs, disasters, etc.
Remote monitoring of construction projects.
Satellite Trailer Subsystems
Dish and Radio Transceiver
Power
Leveling and Aiming
Heating and Cooling
External Connections
Computer
Ground Station Power Alternatives
(ALL are provided)
Local Power Outlet unlimited(long extension cord)
Batteries via UPS at least 8 hours before(computer controlled) recharging
Gasoline generator at least 24 hours before(pushbutton start) refueling
Type of power Running Time
Aiming System
Satellites are 2 degrees apart in the sky; aiming accuracy must be better than 1/2 degree.
GPS Receiver provides accurate local position to PC.
PC calculates azimuth, elevation and polarization settings.
Dish is aimed with precision compass and inclinometer, using simple adjustments. Azimuth - motor drive Elevation - hand operated turnbuckle
No hand tools required.
Weatherproof Equipment Rack Cabinet
Mounted on shock absorbers.
Automatic thermostatically controlled heater.
Automatic thermostatically controlled ventilation fan.
No actual air cooling. Use parasol if needed.
Contents: Radio transceiver UPS and batteries (more batteries elsewhere) Spectrum analyzer Ethernet switch Laptop PC and docking station Local wireless access point Power line frequency meter
Computing SystemLaptop PC in docking station
Runs 3 special programs:
Satellite aiming Dish Transceiver control and monitoring UPS control and monitoring
Also supports all Internet access such as:
Web browsing Email H.323 Video Conferencing Distance Learning tools
Instructional Site
Transportable Ground Station
Long-Range wireless (20 miles)
Wall-Penetrating wireless(several non-metal walls)
Local Wireless (1000 ft)
Local EthernetCable (200 ft)
Ground Station to Instructional Site Connection Alternatives(ALL are provided)
1
4
3
2
Instructional Site Internal PC Connection Alternatives
Ethernet Switch
PCsGround Station
PCs
PCs
Ground Station
Ethernet Switch
Ground Station
Ethernet Switch
Ground Station
Existing LAN
PCs
External Wireless
Internal Wireless
InternalEthernet
Internal LAN
(ALL are provided)
Ground Station
Wireless Router
PCsExternal and Internal Wireless
1
2
3
4
5
Transportable Satellite Internet System
Recommended