By Tapesh

1. DEPARTMENT OF COMPUTER
ENGINEERING AND INFORMATION
TECHNOLOGY

2. 2
SEMIENAR
ON
SKY-X TECHNOLOGY
SUBMITTED BY:-
MISS.ALFIYA FATEMA
MR.TAPESH CHALISGAONKAR

3. Content:
Introduction
Working Details
Application
Merits
Future enhancement
Conclusion
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4. Introduction :
 Satellites are an attractive option for carrying Internet
and other IP traffic to many locations across the globe
where terrestrial options are limited .
 The Sky X technology replaces TCP over satellite link
with a protocol optimized for the high loss and
bandwidth conditions of the typical satellite
communication.
 Adding the Sky X system to a satellite network allows
users to take full advantage of the available bandwidth
 The Sky X technology transparently enhances the
performance of all users on a satellite network . 4

5. WORKING :
 Sky X Technology Overcome TCP Performance
Limitations.
 Even though the TCP is very effective in the local network
connected by using cables or optical fibers by using its
many features
 Thus the advantages achieved by TCP in LAN's are no
longer effective in the satellite link.
 So it is desirable to design a separate protocol for communication
through the satellite to eliminate the disadvantages of using TCP
over the sat 5

6.  The Sky X gateway works by transparently replacing
TCP connections from the client and converting the
data to Xpress Transport protocol (XTP) for the hop
over the satellite link .
 The sky X client/server system enhances the
performance of the internet and private network
access over satellite links.
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7. XTP Protocol :
 Xpress Transport Protocol (XTP) is a transport
layer protocol for high-speed networks promoted by
the XTP Forum developed to replace TCP.
 XTP provides protocol options for error control, flow
control, and multicast mode.
 Instead of separate protocols for each type of
communication, XTP controls packet exchange
patterns to produce different models.
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8. Characteristics of XTP :
 Error control
 flow Control
 Prioritization Issues
 Multicast mode
 Selective Retransmission
 Multi-packet handshaking
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9. Sky X-Gateway :
 The Sky X gateway works by intercepting the TCP
connection from the client and converting the data to the
XTP for transmission over the satellite.
 The Sky X gateway on the opposite side of the satellite
link translates the data back to TCP for communication
with the server.
 No changes are required to the client or server and all
applications continue to function without modification.
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10. 10

11. Application :
 Used for Satellite communication.
 Used for accessing web in fastest
speed.
 Used For data transfer, File Transfer
efficiently.
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12. Merits :
 Increases web performance 3 times
faster.
 Does not require any modifications to
end client and servers.
 Sky X Gateway provides fast, efficient,
fully reliable multicast file transfers.
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13. Future Enhancement :
 A product called XipLink which is under
developing will replace the sky X.
 It is very much the same as the Sky X
with extra capabilities.
 It optimize all TCP/IP traffic, basically
the link itself.
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14. Conclusion :
 Thus Sky -x technology is best suited
for satellite communication using XTP
protocol and Sky x gateway.
 The Sky X system of a satellite network
allows users to take full advantage of
the available bandwidth
 It gives all features required for
successful data Transmission.
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15. Thank you!
?
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