Like. Good question. There are a lot of papers on traffic model, but it is still an open issue...
takashi.tome 2016-03-31 3:51 GMT-03:00 Jean-Francois Mezei <[email protected]>: > > Canada is to hold a 3 week long hearing on discussing whether the > internet is important and whether the farcical 5/1 speed promoted by the > government is adequate. > > In this day and age, it would be easy to just set FTTP as target > technology and be done with it, but too many want to have a policy that > is technologically neutral. > > To this end, I will not only be proposing that subsidized deployments > not only meet advertised service speed standards, but also a capacity > per end user metric for the last mile technology as well as for the > backhaul/transit. > > (One of the often subsidized companies deploys fixed wireless which > delivers the advertised speed for the first week, but routinely gets > oversubscribed after a while and customers feel like on dialup.) > > > I know that for sufficiently large ISPs, they currently provision just > over 1mbps of transit capacity per end user (so 800-1000 customers per > 1gbps of transit). The number rises by over 30% a year as usage grows. > (The CRTC can get exact figure from telecom operators and generate > aggregate industry-wide growth in traffic to do yearly standard > adjustment). > > QUESTION: > > Say the policy is 1mbps per customer if 1000 customer or more. Is there > some formula (approx or precise) to calculate how that 1mbps changes for > smaller samples ? (like 500 customers, 200 ? ) > > > > And on the last mile portion where one has typically few users on each > shared capacity segment (fixed wireless, FTTP, cable), are there fairly > standard oversubscription ratios based on average service speed that is > sold in that neighbourhood ? (for instance if I have 100 customers with > average subscibed speed of 15mbps, how much capacity should the antenna > serving those customers have ? > > > I realise that each ISP guards its oversubscription ratios as very > proprietary, but aren't there generic industry-wide recommendations ? My > goal is to have some basic standards that prevent gross over > subscription that result in unusable service. > > As well, I want that a company pitching a broadband deployment be able > to demonstrate that the technology being deployed will last X years > because it has sufficient capacity to handle the number of customers as > well as the predicted growth in usage each year. > > > Any help ? comments on whether this is crazy ? sanity check ? > > > > > >
