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SKY - X TECHNOLOGY

Under the guidance of- Submitted By- Dr. U.C. Jaiswal Pranav Bharti(104210034)

Department of Computer Science and EngineeringMadan Mohan Malviya University of Technology, Gorakhpur

Introduction Why sky X- Technology? Working Details Characteristics of XTP Sky X Gateway Application Merits Demerits Conclusion reference

Outlines...

Satellites are ideal for providing

internet and private network access over long distance and to remote locations.

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 .

Introduction :

However the internet protocols are not optimized for satellite conditions and consequently the throughput over the satellite networks is restricted to only a fraction of available bandwidth.

Thus We need sky x technology to over come these restrictions and to access maximum bandwidth.

Sky X product increase the performance of IP over satellite through a combination of protocol connection splitting data compression and web prefetching.

Why Sky-X Technology

WORKING Details :

Sky X products increase the performance of IP over satellite through a combination of protocol connection-splitting, data compression.

So it is desirable to design a separate protocol for communication through the satellite to eliminate the disadvantages of using TCP.

Thus the advantages achieved by TCP in

LAN's are no longer effective in the satellite link.

WORKING Details :

WORKING Details :

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.

But the satellite conditions adversely interact with a number of elements of the TCP architecture, including it’s window sizing, congestion avoidance algorithms, and data acknowledgment mechanisms, which contribute to severely constrict the data throughput that can be achieved over satellite links.

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.

XTP Protocol :

1> Error control 2> flow Control 3>Byte ordering 5>Multicast mode 6>Selective Retransmission 7>Multi-packet handshaking

Characteristics of XTP :

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.

This architecture offers vastly improved performance while remaining entirely transparent to the end user and fully compactable with the internet infrastructure.

No changes are required to the client or server and all applications continue to function without modification.

Sky x-Gateway :

Sky X Gateway Network Integration

The Sky-X Gateway XR10 is well suited to networks with high latency, high bit error and asymmetric links.

Designed as an remote device, it performs best at maximum bandwidth with a single, very large FTP and supports an industry-best number of simultaneous sessions and connection turnover rate.

Sky X Gateway Network Integration

The Sky X Client / Server increases the throughput and efficiency of network access over satellites by transparently replacing TCP with the Xpress Transport Protocol (XTP) for the satellite segment of the connection.

The sky X client/server system enhances the performance of the internet and private network access over satellite links.

Sky X Gateway Network Integration

The sky X client software installed on the PC’s of the end user, works in conjunction with a sky X server hardware unit located at the network hub.

The Sky X client/server system overcomes the deficiencies of TCP/IP in satellite –based networks while remaining entirely transparent to end-user applications. The sky X client is ideal for use with any satellite receiver card or set –top box.

Sky X Gateway Network Integration

Used for Satellite communication.

Used for accessing web in fastest speed.

Used For data transfer, File Transfer efficiently.

Application :

1> Increases web performance 3 times faster.

2> Does not require any modifications to end client and servers.

3>Sky X Gateway provides fast, efficient, fully reliable multicast file transfers.

Merits :

Thus Sky -x technology is best suited for 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.

Conclusion :

References :

Computer Networks A.Tanenbaum A Top Down Approach Featuring The Internet. Addison Wesley by JF&Ross KW. TCP/IP Protocol Suite, by Forouzan B.

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