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The Journey of Educational Content over Satellite
Transcript of The Journey of Educational Content over Satellite
There is Internet Access (*Broadband)
There is Relevant Educational Content
There is Interaction!
How do we provide broadband access to people in places where fiber connectivity is not feasible?
How do we make relevant educational content available, even with limited connectivity?
How do we make the experience rich and interactive so that the learning process takes place?
How do we reconcile the promise of On-line Education with the reality of a disconnected World?
Fixed broadband Internet subscriptions in 2012
as a percentage of a country's population
Most VSAT installations take only hours, not weeks, or months
Civil works are minimal. No trenches to dig... no towers to build
A VSAT station can be installed virtually anywhere
Satellite broadband service is available virtually everywhere
Capital Expenditure is significantly lower compared to Fiber and Microwave Backhaul
From an individual remote location
Or from hundreds of remote places...
We have to get Creative!
in a word...
Internet traffic is tricky...
if I open a website in my browser, I get a response (usually) ... That's logic.
The Response is data traffic,
bits coming my way...
That's called "unicast traffic"
But satellite bandwidth is really expensive... when we add up all that traffic from multiple sites back and forth, the bill gets quite hefty$$
Didn't we say we were going to get creative?
With Educational Content, a great amount of data is the same for everybody.
In a given educational Network, all students in the school browse the same websites and learning management systems
It's natural to think we should be able to send that content only once to everybody, like Radio and TV Stations do...
But not all students need the same content at the same time, so it is not exactly like Radio or TV...
We knew in advance which relevant educational content has to be available to the network?
What if we could also store that content
in the class room's own private cloud?
What if we could send and update that content on a scheduled basis via Multicast, so that each school receives the content at the same time for later use?
That's HUGE $AVING$
and a TREMENDOUS performance boost to the user experience... even with limited broadband access!
A Content Server at the HUB
Network Appliances that provide
safe access to Internet and
store educational content and tools
A Multicast Enabled Network to make possible efficient and controlled distribution of content
A well tuned software application to distribute content based on schedules and data increments for greater efficiency
What do we need?
A well defined process to keep content up-to-date and guarantee active communication among members of the educational content
Educational Web Content is constantly pre-fetched and loaded in the content server. Lessons, rich media, interactive content and more ... always ready to be pushed to the network
Content is sent to all remote sites' appliances during off-peak hours via multicast, based on predetermined schedules.
Why Multicast? Because content uses the same low bandwidth whether it is 1 or 1000 remote sites.
What about video conferencing
With Multicast support too...
A Video Conferencing and Collaboration
Server at the HUB
A Multicast Enabled Network to make possible efficient and controlled distribution of video
What do we need?
PCs running Windows, MAC, or Linux with a JAVA based software client
Multiple video feeds are processed by the Server at the HUB and sent via multicast to all participants. This saves bandwidth and makes interaction possible without breaking the bank
Effective On-Line Education requires Internet Access, Relevant Educational Content, and Interaction
Satellite broadband is a cost-effective alternative to terrestrial connectivity in remote locations
Bandwidth Limitations can be overcome with the proper network architecture... one that supports Multicast transport and Multicast based applications
W W W . N E W C O M I N T E R N A T I O N A L . C O M