Traffic Squeezer - Satellite Link Biashara - Satellite WAN Biashara - Marine Internet Biashara - Satellite Internet Biashara
A satellite Internet connection is an arrangement in which the upstream (outgoing) and the downstream (incoming) data are sent from, and arrive at, a computer through a satellite. Each subscriber\'s hardware includes a satellite dish antenna and a transceiver (transmitter/receiver) that operates in the microwave portion of the radio spectrum.
Satellite Internet systems are an excellent, although rather pricey, option for people in rural areas where Digital Subscriber Line (DSL) and cable modem connections are not available. A satellite installation can be used even where the most basic utilities are lacking, if there is a generator or battery power supply that can produce enough electricity to run a desktop computer system. The two-way satellite Internet option offers an always-on connection that bypasses the dial-up process. In this respect, the satellite system resembles a cable modem Internet connection. But this asset can also be a liability, unless a firewall is used to protect the computer against hack attempts.
The nature of the satellite connection is good for Web browsing and for downloading of files. Because of long latency compared with purely land-based systems, interactive applications such as online gaming are not compatible with satellite networks. In a two-way geostationary-satellite Internet connection, a transaction requires two round trips between the earth's surface and transponders orbiting 22,300 miles above the equator. This occurs in addition to land-based data transfer between the earthbound satellite system hub and the accessed Internet sites. The speed in such a connection is theoretically at least 0.48 second (the time it takes an electromagnetic signal to make two round trips at 186,000 miles per second to and from a geostationary satellite), and in practice is somewhat longer. Satellite systems are also prone to rain fade (degradation during heavy precipitation) and occasional brief periods of solar interference in mid-March and late September, when the sun lines up with the satellite for a few minutes each day. Rain fade and solar interference affect all satellite links from time to time, not just Internet systems.
Two-way satellite Internet uses Internet Protocol (IP) multicasting technology, which means up to 5,000 channels of communication can simultaneously be served by a single satellite. IP multicasting sends data from one point to many points (at the same time) by sending data in compressed format. Compression reduces the size of the data and the bandwidth. Usual dial-up land-based terrestrial systems have bandwidth limitations that prevent multicasting of this magnitude.
Some satellite-Internet service still requires you to have a dial-up or cable modem connection for the data you send to the Internet. The satellite data downlink is just like the usual terrestrial link, except the satellite transmits the data to your computer via the same dish that would allow you to receive a Pay-Per-View television program. So, if you are in a rural area and you want broadband access to the Internet, satellite Internet may be for you!
For example here are the pictures of Satellite Devices:
Satellite networks being used for Marine Internet and Data connectivity. For example here are some pictures of deployment of Satellite Marine Network:
Satellite Devices, and Marine Satellite Network Image Courtesy of the Netdish
and Base 3 s.r.l (Satlink)
WARNING: You may need to seek their approval and permissions to download, re-share, publish and or use their respective above copyright images and corporate/trademark/brand logos !
TrafficSqueezer optimized network tunnels over satellite links eliminates these limitations, and provides more room for Satellite providers (ISPs) to increase their customer range.
|Author/Mwanzilishi: Kiran Kankipati - Copyright © (2006-2013) haki zote zimehifadhiwa. - Mradi Uzinduzi Date: Apr 2006||mwisho Revised: 19-Mar-2013 |