a. Satellite Broadband (VSAT) <
i. What is VSAT
VSAT is the short form for Very Small Aperture Terminals. In short, there are three main components of the VSAT Technology – The Satellite, A Central Hub (With a Big Dish Antenna) and a number of smaller nodes (smaller dish antenna) kept at various remote locations that together form a Star topology (Even Mesh topologies are possible for small networks) using the satellite network. So essentially, all the nodes communicate with the central hub through the satellite as the medium for such communications. In case additional networks (Internet, terrestrial MPLS, etc) need to be integrated with this VSAT network, they can be done at a NOC (Network Operations Centre) at the central hub.
Lately, the Geo-Synchronous satellites are used more for WAN/ broadband Internet connectivity as it can provide a permanent coverage over a fixed area. After C, Ku bands it is the Ka band which is hogging the limelight for its high throughput performance capabilities (Excess of 100 Gbps per satellite).
ii. Advantages and Benefits
- Access in Remote Locations:
This has been the traditional strength of Satellite Networks. A Satellite in the Geo Synchronous orbit can cover around 33% of the earth’s surface and can provide connectivity to any region covered by it. A satellite can also focus on a particular high density region and multiple satellites can work together to provide global coverage. This is very useful for remote locations (rural areas, ships and coastal regions, hills, etc) where there is limited or no terrestrial connectivity.
A VSAT network can today carry data as well as latency sensitive applications like voice and video as well. That’s why the DTH (Cable TV), Internet Radio and other technologies have found applications in real life situations. Even IP based Multi-cast applications like audio and video streaming are possible (Eg. Digital Signage applications).
- Internet Access:
A VSAT Network can provide Internet access in addition to the point to point WAN links. It’s all set to create a next major wave in the consumer broadband industry with the launch of satellites operating in the Ka band offering very high throughput, especially in the non-metro regions. ‘Always ON’ broadband Internet services are possible with VSAT networks.
- Rapid deployment:
Once the Satellite is put in to its orbit, the deployment at the customer premises can be done (usually in hours) if the equipment is available, with minimum training. And the deployment can be done in any region, irrespective of where it is located.
Satellites support encryption of all data transmitted between two sites or multiple sites, which make the creation of Virtual Private Networks (VPN) possible. This is one reason why the VSAT networks could find more acceptance in the corporate and Government/ Defence connectivity requirements.
VSAT Networks support QoS (Quality of Service) and Layer 2 prioritization policies to be applied across the WAN link which enables real time applications to be deployed across the network.
- Mobile Access:
Mobile access has been another traditional strength of a satellite network. This makes TV broadcasters (for example) make broadcasts from anywhere – even when they are on the move. Another possible application could be mobile Internet access, while on the move.
- Bandwidth Allocation:
It is possible to allocate/ restrict bandwidth based on individual applications – this could be a very useful feature for business communications, ensuring that critical business applications like ERP always have a certain dedicated bandwidth across the VSAT networks.
VSAT networks can be easily and cost effectively be scaled to accommodate multiple locations across the globe. In fact, some of the largest customers of VSAT networks have as many as 10,000 sites on a single network!
Though the initial investment (service provider perspective) might be high in terms of the cost of satellites and putting them in the orbit, the running cost (end point terminals and on-going subscription) is coming down rapidly – That’s why applications like Direct To Home (Cable TV) are broadcasted directly from satellites to homes at a reasonable cost to the subscriber.
- Standards based:
VSAT networks are standards based and support IP (Internet Protocol) and its variants through a protocol called IPoS (Internet Protocol over Satellite – TIA 1008). Since the developments are standards based, it enables the creation of a healthy ecosystem of terminal, hub and ancillary equipment manufacturers and hence new innovations and improvements are faster.
Satellite Networks are very reliable (having up-times in the magnitude of 99.5% and above) and have been field tested for many years now. Mission critical applications like Bank ATM’s, Navy and Point of Sale appliances use VSAT!
- Back-up to Terrestrial Networks:
VSAT networks have always found applications in this area – they make a good back up network to the terrestrial networks (Leased Lines, MPLS circuits, Broadband DSL Connectivity, Internet Leased Lines, etc) and there are certain customized plans available for backup exclusively with satellite service providers that charge for only 5% of the monthly capacity when the VSAT connection is used exclusively for backup. And yes, VSAT networks are not affected by natural calamities like earthquakes, storms etc. Some network routers come with optional VSAT modules for terminating the VSAT links and providing auto fail-over during the failure of terrestrial network links.
- Inter-operation with Terrestrial Networks:
An interesting area where the VSAT service providers are getting stronger is the comprehensive network provision (through partnerships with terrestrial service providers) and management. Through this, they can give (for example), MPLS networks in the metro areas and VSAT networks in the rural areas for the same company – both of them can inter-operate with each other acting as a single network.
- Single Hop:
Satellite transmissions are single hop (mostly) when compared to the multiple hops that the communications based on terrestrial networks need to take to reach to their destination. Some factors like router performance etc, depends on multiple service providers and hence end to end QoS may not be possible with terrestrial public networks.
-Bandwidth on Demand:
VSAT networks support and are better suited for Bandwidth on Demand services than their terrestrial counterparts.
Cost per connection is independent of the location/ distance: With a VSAT network, the cost per node is independent on the number of nodes and also distance between the various nodes. Compare that with Leased Lines, where the cost increases with more nodes and distance between the two locations. IPLC/International MPLS and other such global communication links are very expensive on terrestrial networks.
b. Internet Service Plan
We offer a few of attractive service plans. You can select any of it to suite your requirement. There are two bands, Ku- and C-.
c. Service Coverage
Measat-5 (For Ku-Band only)
ABS-2A (For Ku-Band only)
- IPSTAR-1 satellite is a Geo orbit satellite with Bent Pipe payload configuration.
- 45 Gbps of Spot Beam aggregate capacity at equivalent to 1,000+ Transponders of 36 MHz of conventional coding and modulation. The dish is 74-120 cm.
- A regional satellite system, whose beams cover 22 countries throughout the Asia-Pacific Rim, with Ku-Band (84 Spot Beams, 3 Shaped Beams, and 7 Regional Broadcast Beams) and Ka-Band (18 Feeder Beams & Gateways).
- Located at 120 +/- 0.5 ° East
- ABS-2A is the second pair of the all-electric satellite design that will deliver more cost-effective solutions for ABS customers.
- ABS-2A will be co-located with ABS-2 at the prime location of 75°E.
- It has 5 dedicated high powered Ku-band beams which will serve South Asia, SE Asia, Russia, Sub-Sahara Africa, and MENA regions.
- Suitable for DTH services, Enterprise Networks/VSAT, maritime and mobility solutions.
- ABS-2A will provide expansion capacity to ABS-2 and will also act as an in-orbit spare, providing full backup for a significant number of ABS-2 transponders
d. Scada Application
- What is SCADA Used For?
SCADA (Supervisory control and data acquisition) is an industrial automation control system at the core of many modern industries, including:
SCADA systems are used by private companies and public-sector service providers. SCADA works well in many different types of enterprises because they can range from simple configurations to large, complex projects.
Virtually anywhere you look in today's world, there is some type of SCADA system running behind the scenes, whether at your local supermarket, refinery, waste water treatment plant, or even your own home.
- Food and beverage
- Oil and gas
- Water and waste water
- And many more
- How Do SCADA Systems Work?
SCADA systems deploy multiple software and hardware elements that allow industrial organizations to:
In basic SCADA architectures, information from sensors or manual inputs are sent to PLCs (programmable logic controllers) or RTUs (remote terminal units), which then send that information to computers with SCADA software. SCADA software analyzes and displays the data in order to help operators and other workers to reduce waste and improve efficiency in the manufacturing process.
Effective SCADA systems can result in significant savings of time and money. Numerous case studies have been published highlighting the benefits and savings of using a modern SCADA software solution such as Ignition
- Monitor, gather, and process data
- Interact with and control machines and devices such as valves, pumps, motors, and more, which are connected through HMI (human-machine interface) software
- Record events into a log file
e. Aeronautical Broadband
- Aero modem
- Aero terminal with dual Ku/Ka antenna