Transcript Powerpoint file

Overview of Internet via
Satellite
Internet via Satellite:
Present and Future Trends
GIBN Workshop
Vienna, Austria
December 3, 1998
Dr. Ramon P. De Paula
NASA HQ
Washington D.C.
IP over Satellite Market Prediction
• Internet over Satellite (IP) today:
– $178 Million ( US Dollars)
• Providers: Intelsat, Hughes, Orion, etc.
• Satellite IP Market will grow to:
– US $2 Billion by 2002
– US $30 Billion by year 2007
• propel by Ka and V band systems
ISP providers worldwide have generated a significant
demand for Sat services and demand keeps increasing
Companies Active in IP over
Satellite today
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Teleglobe
Panamsat
Orion
Hughes Net Serv.
Agcast
GlobeComm
Fantastic Corp.
NetAccess
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Intelsat
Gilat
Vocaltec Comm.
NetSat Express
and others
Examples of Current Internet
Services via Satellite
From http://www.direcpc.com
Hughes DirecPC
Examples of Current Internet
Services via Satellite
Gilat/GE Spacenet
Skystar Advantage
From http://www.gilat.com
Examples of Current Internet
Services via Satellite
From http://www.intelsat.com
COMPETITION
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TV distribution
SONET Rings
Trunking; overseas
Undersea cable
Mobile services
Cellular, PCS
Remote telephony
Wireless local loop, LMDS
DBS/DTH
Cable (digital)
Interactive data
xDSL, Cable modems,,,
VSATs
Fiber
– Fiber technology is improving rapidly. Optical
Amplifiers, DWDM, switches, are decreasing transport
costs and increasing capability.
Challenges to Implement
Internet via Satellites
• Policy
– Access to spectrum
– Trade and security
– Access to markets
– International Cooperation
• Technical
– Launch vehicles
– Seamless Interoperability/Standards/Protocols
– Long Term Advanced Technologies
Spectrum: Issues and Challenges
• New and proposed satellite and terrestrial services have
dramatically increased demands on allocated spectrum – Extreme Competition from:
 Personal communications systems.
 Mobile systems.
 Local-Multipoint Distribution Systems (LMDS).
 Interactive Multimedia.
 Broadcasting.
 Etc.
• GEO satellites slots at traditional C-and Ku-Bands are nearly full
worldwide increasing demand for new frequency bands.
• Proposed LEO systems require worldwide allocation of same
frequency spectrum
INTEROPERABILITY
INTEROPERABILITY ENABLES
COMMUNICATION AND
INTELLIGENT INTERACTION BETWEEN
SYSTEMS OF DISSIMILAR NETWORK
ARCHITECTURES AND PROTOCOLS,
USING EQUIPMENT MADE BY
DIFFERENT VENDORS AND OWNED
BY DIFFERENT SERVICE
PROVIDERS.
Reliable Multicasting Over Satellite
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Downlinks
Multicast technology enables data to
be simultaneously transmitted to many
network users, but not necessarily all sites
on a network
Uplink
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Land Line
Network
Benefits
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Uplink Site
Applications
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Software distribution & updates
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Product inventory
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Kiosk multimedia programming
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Internet web caching
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Data warehousing
Permits a network node to transmit one
message to one or more nodes in a single
operation
Can provide huge savings in bandwidth by
transmitting only a single copy of data
(subset of broadcasting)
Impact
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A large retail chain store uses satellite
multicast to distribute software updates
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Multicasting a 1 Mbyte file to 250
clients now takes 4 minutes
Unicast originally took over 6 hours
Relieve terrestrial bandwidth bottlenecks
Future Trends in IP over Satellites
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Improved IP Protocol / Compatible with Sat Channel
Voice over IP
Lower Cost Storage Devices
Advanced Hardware/Software to handle IP traffic over
Satellites
• New Networks and Traffic Management
• New Technologies in several key areas:
– Antennas, Switching, MMIC, Bandwidth use, etc.
• New Satellite Systems using new frequencies Ka, V, and Optical
PLANNED KA BAND SYSTEMS*
Company
S ystem
Orbit
Coverage
No. of
S atellites
S atellite
Capacity
(Gb/s)
Intersatellite
Link
Onboard
S witching
Capital
Investment
($B)
LockheedMartin
Astrolink
GEO
Global
9
7.7
Alenia
Euroskyway
GEO
Limited
5
7
Motorola**
Celestri**
LEO&
GEO
Global
63&9
Loral
Cybestar
GEO
Limited
Global
Hughes
Galaxy/
GEO
1 Gb/s
FPS
4
1.8
6 x 750 kb/s
FPS
3
4.9
1 Gb/s
BBS
1.05
Global
20
4.4
1 Gb/s
BBS
5.1
Spaceway
GE
Americom
GE*Star
GEO
Limited
Global
9
4.7
None
BBS
4.0
Morning
Star
Morning
Star
GEO
Limited
Global
4
0.5
None
None
0.82
Teledesec
Teledesec
LEO
Global
288
13.3
1 Gb/s
FPS
9
Echostar
Echostar
GEO
Limited
2
FPS:Fast Packet Switch; BBS:Baseband Switch
*Total: 279 “Orbital Slots”, 804 Satellites
** Celestri does not exist
Teledesic/Motorola now partners
Satellite Systems Planned for V Band
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CAI Satellite Com. Inc.
Denali Telecom LLC
GE Americom
Globalstar L.P.
Hughes Com. Inc.
Expressway
“
SpaceCast
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StarLynx
LEO One USA Corp.
Lockheed Martin
Loral Space & Com. Ltd.
Motorola
M-Star
Orbital Sciences Corp.
PanAmSat
Spectrum Astro. Inc.
Teledesic
TRW
GEO
EO
Molniya
(11)
LEO
GEO
GEO
GEO (4)
LEO
GEO
GEO
LEO
MEO
GEO
GEO
LEO
GEO (4)
(1)
(9)
(80)
(14)
(6)
& MEO (20)
(48)
(9)
(10)
(72)
(7)
(12)
(20)
(72)
& MEO (15)
Conclusions
• IP Over Satellites Today Works !!!!
• IP over satellites not the issue anymore !!
– Delay over Sat Link not a problem
• What Data services the Customer Wants ?
• What new services and applications will
futures satellite constellations provide ?