saurabh daptardar wrote:
On 2/28/07, Rony ronbillypop@yahoo.co.uk wrote:
This is a new protocol proposed for the purpose of facilitating fast Linux CD/DVD ISO downloads through the DTH type satellite medium. A Linux satellite having a footprint over Asia and Africa will help in providing the latest Linux distributions to even the remotest areas of these regions. The broadcasts will be sequential and timed for every .iso file, just like regular television programmes with their respective timings. The number of transponders, frequency etc. is not discussed here. The main purpose of this writeup is to create a transmission protocol for error free unidirectional file downloads via satellite. A single broadcast should be received by un-limited number of receivers anywhere in Asia and Africa.
- What is the time required for downloading a Linux CD ?
- What would be the cost ?
- Is any special hardware required?
On the net, some satt. companies are advertising 2 Mbps speeds per user, so even at say 48 Mbps of collective single user speed as it is uni-directional, we get a speed of 6 Mbytes per second. One CD of 700 Mb would take 116.6 seconds. One DVD of 4500 Mb would take 750 seconds. The idea is to eliminate multiple connections and club all the bandwidth into one broadcast. Hardware can be decided once the transmission protocol is decided.
The EDUSAT programme aims at providing a similar network that you are looking for : http://www.isro.org/Edusat/Page5.htm
I will visit the site.