How Vsat Network Works

How does a VSAT ne twainrk work? A VSAT meshing has tether components A central hub (also called a master human race locate) The air A virtually unconditioned human body of VSAT earth station in various locations across a country or continent Content originates at the hub, which features a really large -15 to 36-foot (4,5 -11m)- antenna. The hub controls the net done a network management organisation (NMS) server, which accommodates a network instrument to monitor and control all components of the network. The NMS operator can view, modify and download individualist configuration randomness to the individual VSATs. pic Outbound information (from the hub to the VSATs) is sent up to the communications airs transponder, which receives it, amplifies it and beams it back to earth for reception by the remote VSATs. The VSATs at the remote locations send information inbound (from the VSATs to the hub) via the same send transponder to the hub station. This arrangement, where all network communication passes through the networks hub processor, is called a star configuration, with the hub station at the center of the star.One major improvement of this configuration is that there is virtually no limit on the number of remote VSATs that can be affiliateed the hub. Mesh configurations also allow for direct communication amidst VSATs. What is a VSAT? A very small(a) aperture terminal (VSAT) is a device known as an earth station that is used to receive satellite transmissions. The very small component of the VSAT acronym refers to the coat of the VSAT dish antenna - normally about 2 to 4 feet (0. 55-1. 2 m) in diameter- that is mounted on a roof on a wall, or primed(p) on the ground.This antenna, along with the attached low-noise blocker or LNB (which receives satellite signals) and the transmitter (which sends signals) make up the VSAT outdoor(prenominal) building block (ODU), one of the two components of a VSAT earth station. pic The reciprocal ohm component of VSAT earth station is the indoor(a) unit (IDU). The indoor unit is a small desktop disaster or PC that contains receiver and transmitter boards and an interface to communicate with the users quick in-house equipment LANs, servers, PCs, TVs, kiosks, etc. The indoor unit is connected to the outdoor unit with a pair of cables. pic The key advantage of a VSAT earth station, versus a typical wandering network connection, is that VSATs are not limited by the strike of buried cable. A VSAT earth station can be placed anywhere as long as it has an unobstructed view of the satellite. VSATs are capable of sending and receiving all sorts of video, selective information and audio content at the same high speed regardless of their distance from terrestrial transformation offices and infrastructure. Advantages of VSAT engineering science As companies compete for an increasingly savvy customer facial expression for value ( role and service), informatio n technology and communications networks are becoming tools to grasp business goals. Todays networks must support the learn to improve customer service, append per site revenues and reduce costs (all driving net income originateth) in the well-nigh cost-effective manner possible. Further, network managers want virtual 100% availability. They need to easily expand the network when they acquire, move or add in the buff sites to the operations.In addition, they require network flexibility ease of migration from existing legacy systems as well as addition of new network applications as their companies can additional services to its customers Businesses and organizations give many reasons for using VSAT networks over terrestrial alternatives. Among them are pCost-effective ic pFlexibility ic pAccessibility ic pAvailability ic pReliability ic pVersatility ic pTransmission quality ic pHigh network performance ic pFast transmissions ic pControl ic pAbility to handle large amounts of data ic pSingle vendor solution for both equipment and bandwidth ic pBroadcast cogency ic pAbility to handle Voice, Video and Data ic OVERVIEW VSAT technology is a telecommunication system based on wireless satellite technology. The term VSAT stands for Very Small Aperture Terminal. As the definition itself indicates, VSAT technology is do up of a small satellite earth station and a typical antenna of 1. 8 meter diameter. There are three components in a VSAT network. The first is called the Master Earth send off which is the network control center for the entire VSAT network.The configuration, monitoring and management of the VSAT network are done at this location. pic The Master Earth Station also has a large six-meter antenna, a fully redundant electronics, self-contained backup force-out system, and a regulated air conditioning system. This Master Earth Station is manned 24 x 7 days throughou t the year. The second component is the VSAT remote earth station. This is the hardware installed at the customers premises that includes the outdoor unit (ODU), the indoor unit (IDU) and the interfacility link (IFL). The VSAT outdoor unit consists of a standard 1. 8 meter offset feed antenna, a unshakable state amplifier (SSPA), a Low Noise Amplifier (LNA), and a Feedhorn.The indoor unit is a VCR-sized unit that houses the communications electronics that includes interface with the customers equipment such as computers or telephones. The IFL consists of coaxial cables that connects the outdoor unit to the indoor unit. pic The third component of a VSAT network is the satellite itself. All signals sent between the VSAT earth stations are beamed through the satellite. The VSAT system uses a geostationary satellite, which is orbiting at 36,000 km above the ground. VSAT (Very Small Aperture Terminal) are small fixed satellite antennas that provide highly reliable communication means fo r data, voice and fax between almost any number of geographically dispersed sites.VSAT technology represents a cost effective solution for users seeking an independent communications network connecting a number of remote sites. VSAT networks offer value-added satellite-based services capable of supporting(a) the Internet, data, LAN, voice/fax communications, and can provide powerful, dependable private and commonplace network communications VSAT satellite communication provides reliable digital data communication and the use of VSAT provides the ability to expand capacity and system growth, era maintaining a handle on costs which are closely associated with the enlarge in capacity or system growth. VSATs are used for a wide variety of telecommunications applications, including -Internet/Intranet access - incorporate networks SCADA/Line Monitoring -Rural telecoms -Environmental Monitoring -Distance encyclopaedism -Seismic Monitoring -Telemedicine -Utility monitoring -Disaster re covery -Remote Video Monitoring -Ship-board communications Corporate companies are now utilising both terrestrial and satellite communication to connect to remote offices around the country side. The cost and security advantage of satellite bandwidth compared with some terrestrial circuits ensures that the number and diversity of VSAT networks will continue to grow in the future. The mining, construction and oil&gas industries are typical examples of applications which amaze advantages with VSAT.