rb384997
join:2006-10-31
Athens, OH | just curious on oversell ratios
What do you guys think is a fair oversell ratio for wireless broadband?
say I had 20Mbps of bandwidth and I wanted to offer 1.5Mbps to customers what would be a reasonable oversell ratio? |
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GNca George
GorillaNET
Premium
join:2008-07-12
Minden, ON
| This is a pretty good answer to that question..
5. What is the definition of broadband connectivity?
Broadband connectivity is defined as access to Internet service that supports data transmission at a minimum download speed of 1.5 Mbps to the household. The program has a minimum target upload speed of 384 kbps. For both upload and download, the program expects a maximum oversubscription ratio of 10:1 on access bandwidth to backhaul bandwidth when the total number of users per node is 100 or less. The acceptable oversubscription ratio would scale linearly up to 50:1 as the number of users on a node approaches 10,000.
The program considers 1.5 Mbps to be associated with the average expectations of the end-user experience associated with a 1.5 Mbps service. Comes from here »www.ic.gc.ca/eic/site/719.nsf/en···004.html
George
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Tough Broadband for a Tough Crowd!
GorillaNET.ca - 10Mbits to your desk, coming soon. |
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nevtxjustin
join:2006-04-18
Dallas, TX
1 edit | reply to rb384997
Hmm...that sounds like a aspirational bid request for a proposal, so I really don't think that answers your question.
Try this on-going thread on the UBNT forum where I'm discussion this on page 2.
»forum.ubnt.com/forum/showthread.php?t=14673 |
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GNca George
GorillaNET
Premium
join:2008-07-12
Minden, ON
2 edits | said by nevtxjustin  :Hmm...that sounds like a aspirational bid request for a proposal, so I really don't think that answers your question. Justin, that quote is the distilled knowledge gained from funding something like a billion dollars in Broadband programmes, some of which worked, some of which didn't.
Its also the requirement for getting funded in this round for another $225M.
It also works, quite well, which is why I posted it.
I know people that over-subscribe at higher rates, but they often don't deliver to the customer.
That 10:1 number is gradually dropping towards unity as bandwidth usage gets higher and higher. It also changes depending on connection speeds delivered to the customer.
The slower the connection speed, the lower the oversubscription ratio should be, and the customer is liable to use a higher percentage capacity of the pipe more often.
You may only get by with 10:1 at 1.5Mbits, but you may do perfectly fine with 20:1 or more if you are selling 10Mbit connections as the customer normally will use only a very small fraction of that capability.
P2P and HD streaming can screw up your best estimate instantly of course.
edit: The numbers you quote in your thread are roughly where we were four years ago. We currently provision 128 Mb/s of backhaul capacity for 550 customers. As Spainuser said, your numbers worked fine before the advent of the multimedia Internet and may still work fine in some demographics, but you would never get away with that here.
George
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Tough Broadband for a Tough Crowd!
GorillaNET.ca - 10Mbits to your desk, coming soon. |
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NZFxonet
join:2008-07-06
4814 | reply to rb384997
I did some carefull calculations in my business plan / budget and over the different service types it averages 62/1. The unlimited plans have a lot lower ratio than my capped plans.
Cheers
Mike |
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nevtxjustin
join:2006-04-18
Dallas, TX
| reply to GNca George
said by GNca George :The numbers you quote in your thread are roughly where we were four years ago. We currently provision 128 Mb/s of backhaul capacity for 550 customers. As Spainuser said, your numbers worked fine before the advent of the multimedia Internet and may still work fine in some demographics, but you would never get away with that here. My numbers are scalable, not absolute. So you can plug in any base number you want. What my chart shows is that as you increase the bandwidth by a linear rate, the subscriber loading capacity increases exponentially. |
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GNca George
GorillaNET
Premium
join:2008-07-12
Minden, ON
| On that basis we are in agreement. There is no doubt that oversell ratios increase as base capacity increases.
I believe the Feds took that into account here as well although their numbers are somewhat different.
For both upload and download, the program expects a maximum oversubscription ratio of 10:1 on access bandwidth to backhaul bandwidth when the total number of users per node is 100 or less. The acceptable oversubscription ratio would scale linearly up to 50:1 as the number of users on a node approaches 10,000. George
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Tough Broadband for a Tough Crowd!
GorillaNET.ca - 10Mbits to your desk, coming soon. |
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