Logo

Satellite Internet Forum.
Please note that this forum is now READ ONLY and closed for login and changes
The new forum is here Space and Satellite Communications forum

Welcome, Guest.
Welcome to this satellite broadband discussion forum.  Wherever you are and whatever your problem we are here to help each other. Connecting to the internet via satellite is not always easy but is critically important to those in remote places or with poor terrestrial infrastructure.  Both service providers and customers are encouraged to contribute.  Read the Forum rules.
      Satellite internet forum          

ka band service

(Read 1237 times)
chaady
Ex Member


Nov 6th, 2012 at 12:44am  
is the ka band on ka sat shared or dedicated i test it , its looks like dedicated b4 quota finish .
but some times i feel its shared especially in upload
Back to top
 
 
IP Logged
 
Eric Johnston
YaBB Moderator
*****
Offline


Personal text from Profile,
Options, Top line

Posts: 2107
Reply #1 - Nov 6th, 2012 at 9:55am  
The Twoway satellite has very high speed download carriers (about 70 Mbit/s) and many customers share. The download transmission is continuous but the stream of data comprises packets of data intended for each customer.  Your modem extracts only the data intended for you and all the data for other customers is ignored and lost in your modem.

Your uplink path to the satellite is also shared, but in this case each customer site transmits occasional short bursts of data, which must not overlap (in time) with bursts going up from other sites.

The KA-SAT satellite is new, with 15 years lifetime ahead ot it, and it will be several years before the beams start to fill up, so for the time being you should hardly experience any slow downs due to traffic congestion.

Because the main application of KA-SAT is internet access the design assumes far more download traffic than upload traffic.  If you are attempting very large file uploads then expect speeds much lower than the download speed.  e.g. 10 Mbit/s down and 256kbit/s up.  See your tariff options for your particular bit rates.

To keep the service cheap for domestic users, several thousands of customers will share the same satellite resource, e.g. 3000 customers sharing 70 Mbit/s.  To ensure fair sharing according to amount paid, Mbyte limits are applied to download amounts as well as 1 second averaged speed limits like 10 Mbit/s.

Business users can pay a special tariff for dedicated service, for example for uploading a continuous stream of TV video and sound data from an outside broadcast event (sports, news etc).  
Back to top
« Last Edit: Nov 8th, 2012 at 9:37am by Admin1 »  
 
IP Logged