Short for Regional Broadband Global Area Network, the RBGAN network provides e-mail and satellite internet access direct to portable terminals. The terminal is roughly the size of a laptop computer, and is connected to a standard PC using the plug and play features of the modem itself (USB, Ethernet, or Bluetooth). RBGAN service is based on Internet Protocol (IP) and Packet-Data technologies. Subscribers are usually charged by the amount of data one transfers (per-Mbyte) rather than per minute service, where the charge is based on the amount of data sent and received, not the total time spent online. Regional BGAN is the latest innovation in data services from Inmarsat, the world’s leading global mobile satellite communications provider. BGAN marks a very important stage in the evolution of its data services portfolio, as the service enables the user to access Internet or a corporate Intranet and to transmit huge volumes of data more than twice as fast as current terrestrial GPRS mobile services, at 144 Kbit/s under a shared channel. Regional BGAN offers users high-speed internet access with coverage in up to 99 countries within the satellite footprint. This cost-effective service is delivered through a portable satellite IP modem the size of a notebook PC, making it ideal for professionals on the move.
Regional BGAN Satellite IP Modem. Developed and manufactured for Inmarsat by Hughes Networks Systems, the Satellite IP Modem meets the most demanding remote data needs.
Regional BGAN is a reliable, high-speed solution addresing the need for freedom and flexibility to access business information where and when it is needed. The satellite footprint stretches across north, central and western Africa, as well as Europe, the Middle East, central Asia, the Indian sub-continent and parts of Australia.
You can use this unit just about anywhere
within the countries covered.
The Regional BGAN Satellite IP Modem enables the customer to conduct business from even the most remote locations. Whether on safari, mountain climbing, relaxing at the beach, or trekking across the desert, staying connected to the rest of the world is as easy as being at home. Using the lightweight, portable Satellite IP Modem, Regional BGAN offers reliable and cost-effective access to the Internet. Users can browse the Internet, reach their corporate Intranet, and transfer files at broadband speed. Regional BGAN is based on Internet Protocol (IP) and GPRS technology. The notebook-sized Satellite IP Modem connects to a standard personal computer (PC) using the plug and play features available with most Microsoft Windows operating systems. Users share a 144kbit/s channel over the satellite, giving them more than double the transfer speed of current terrestrial GPRS mobile networks. And, with built in BluetoothTM wireless technology, the Regional BGAN Satellite IP Modem is truly a solution without wires.
To prove the point, here MAFLink team is
using it in the back of a Cessna in flight!
Because the service is based on IP packet technology, users only pay for the amount of data they send and receive, and not for the amount of time spent online. This enables them to stay "always connected" to the Internet.
Data transfer (upload or download) is charged by the MegaByte. We offer a variety of postpaid and prepaid service plans for every budget. Unlike BGAN, RBGAN does not offer voice or streaming data service. The laptop-sized RBGAN unit weighs only 4.1 lbs and is ideal for portable as well as fixed-site applications.
Inmarsat developed one of the most powerful communications satellites ever built, the I-4 satellite. The first I-4 satellite (F1) was launched into geosynchronous orbit from Cape Canaveral on March 11, 2005. The satellites are about the size of a bus and should operate for about 15 years providing BGAN coverage to roughly 85% of the earth’s land surface.
The solution is to have high power transmission in the downlink and high sensitivity satellite uplink sensitivity. This is largely achieved simply by using a large 10m diameter antenna on the satellite. The earliest satellites (e.g. Telstar) used low power, say 1 watt, into its antennas with gain of 3 dBi or so plus 30m diameter dishes on the ground. The BGAN idea simply reverses this arrangement so there is nothing too improbable about it. The feed system will need to generate some 100 spot beams, each approx 1.8 deg beam-width, thus covering all the visible surface of the earth, which looks like a circle approx 18 degrees diameter as seen from the R-BGAN satellite. With such a design it is possible to have an uplink G/T per beam of 17 dBK (10m dia, 1.6 GHz, 300K).
On the downlink, beam gain will be about 42 dBi giving a beam edge eirp of some 55 dBW when the power allocated to a beam is 40W. The power per beam will need to vary according to the traffic required. The uplink bit rates of 100 kbit/s and downlink bit rates of 144 kbit/s look quite feasible. This is not 'broadband' as I understand the term in respect of cable modems, ADSL phone lines and fixed larger 1.2 to 1.8m satellite dish users, rather medium speed. Even the 144 kbit/s is shared amongst multiple terminal users. Located at orbit longitude 65 degrees east the BGAN service is now successfully operating on Inmarsat-4 satellite where it has has coverage of Africa north of the equator, Europe, and Asia to the west of Calcutta. Coverage to the south of Africa and further to the east in Asia is expected but is not guaranteed and awaits confirmation. In some places BGAN is subject to licence restrictions. There are three main terminal manufacturers are: NERA, Thrane & Thrane and HNS.
Extended Inmarsat coverage for R-BGAN
Inmarsat's satellite technology provides a fast, efficient connection, allowing you to download 50K files, e-mail or attachments in about 10 seconds.
Advanced spot-beam technology allows Inmarsat to maintain a footprint stretching across 99 countries from Western Europe and the northern half of Africa, across central and Eastern Europe, the southern CIS countries, to the Middle East and the Indian sub-continent.
Located at orbit longitude 65 degrees east the RBGAN service is now successfully operating on Inmarsat-4 satellite where it has has coverage of Africa north of the equator, Europe, and Asia to the west of Calcutta. Coverage to the south of Africa and further to the east in Asia is expected but is not guaranteed and awaits confirmation. In some places RBGAN is subject to licence restrictions.
The maximum bandwidth within each spot-beam is 144kbit/s. But because Regional BGAN is a packet data network, the average bandwidth available is shared among several connected users if they transmit data at the same time.
The Regional BGAN system allocates this capacity where needed - invisibly to the end-user. Based on Inmarsat's forecast of traffic and capacity, over a three-minute period we estimate users will consistently experience transfer rates equivalent to more than double those offered by current terrestrial GPRS services.
|User Requirements - The DIRECWAY system connects to your personal computer (PC) which must meet the following minimum requirements:|
|Processor:||333 MHz Pentium II class or better|
|Interface:||One available USB port|
|Operating Systems:||Windows 98 SE, Windows ME, Windows 2000|
|Memory:||64 MB RAM (Win 98 SE and Win ME)
128 MB RAM (Windows 2000)
|Free Hard Disk Space:||20 MB|
|Display:||PCI or AGP video adapter, 800 x 600 minimum|
|Browsers:||Internet Explorer 5.0 or higher
Netscape Navigator 4.76
|Internet Application:||All common TCP/IP applications, UDP or RTP traffic|
|Interface:||USB 1.1 or higher|
|Mechanical & Environmental:|
|ITU Weight:||1.3 LBS|
|IRU Weight:||1.35 LBS|
|IRU Power Supply Weight:||0.64 LBS|
|ITU/IRU Dimensions:||6.03" x 1.50"H x 9.0"D|
|Operating Temperature:||5 - 40° C|
|Input Power (IRU/ITU):||Input- 100-240V - 2A, 50-60Hz AC |
Output - 19.5V DC @ 2.37A
6.5V DC @ 1.3A