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elitefx

join:2011-02-14
London, ON
kudos:2
reply to technocar2

Re: [Extreme Plus] New Speeds Effective December 1st

said by technocar2:

250/125 would be unrealistic if a node only has about 304/108 shared by 400-500 houses with possibly 50% or more subs with TPIA, which gives around 250+ modems and a ton of e-MTAs as well (RHP).

Thanks for the info. Don't get the node congestion thing though.

I think in terms of electricity. High voltage transformed down in steps to household current. Why can't Rogers just double/triple their output to each node so there's more than enough for each household to use at max speed simultaneously? OR, why can't they use bigger more powerful nodes?

As far as 250/125 goes I was just throwing it out there. Seems a waste to have a modem @300/150 theoretical topping out at 150/10...........

eeeaddict

join:2010-02-14
Reviews:
·WIND Mobile
·Distributel Cable

personally I think that unless the "more powerful" node isn't much cheaper they would be better off spending any upgrade money on ftth
remember more than 50 down and 10 up is useless for most people, and upgrading cable to handle more than that for everyone would be adding more to everyones bill while only people like us would see any benefit.



elitefx

join:2011-02-14
London, ON
kudos:2

1 edit

said by eeeaddict:

personally I think that unless the "more powerful" node isn't much cheaper they would be better off spending any upgrade money on ftth

Yea, you would have to know exactly how Rogers distributes the internet to determine exactly how many MAIN nodes would need to be upgraded to avoid smaller/neighborhood node congestion. It may be a far less expensive upgrade than than rewiring the whole network with fiber and see us well into the next generation of Docsis 3.1 and beyond..........Aint got a clue but I'm sure it's worth a consideration.

We have to get to a point where node congestion is no longer a factor..........

technocar2

join:2009-05-29
Brampton, ON
kudos:2

1 edit
reply to elitefx

Basically there are two kinds of congestion on docsis.

One is the usual type, where there is 304mbps on the node and too many people are online and everyone gets slow speed.

The second kind of congestion is temporal. Meaning your modem is not online all the time. Its only online for a fraction of a second per second. And its in this fraction of a second that a modem can upload stuff. The more modems there are the smaller this fraction of second becomes; this is know as the time slot. This is what makes the upload to max of 10mbps because it takes a fraction of a second to upload 10mb vs 108mb will take 1 whole second with 4 channels. 10mb with 4 channel takes only a fraction of a second.

How it works is a node can only receive data from one modem at a time. Therefore the node listens to each modem for only a fraction of second and in that fraction of a second the modem can upload whatever it wants but since its only a fraction of a second its limited to 10mbps or whatever the time slot duration is based on the # of modems.

If the node only listened to just one modem then the modem can upload stuff for the full 1 second (so 108mbps) but since there a more than one modem, none of the modems gets 1 full second, they each get a fraction of a second to upload and this is repeated every second. This is pretty much a modem congestion, the more modems there are the smaller the time slot is for each modem and thus a lower upload speed per modem.

Think of it this way, you can only upload as much as the node is willing to listen to you. If the node wants to listen to you for 1 full second then its 108mbps. If the node wants to listen to your modem for 5/54 of a second then its 10mbps and the rest of the remaining bit of that second the node will listen to other modems.


clementlo

join:2005-06-11
Scarborough, ON

1 edit

I am on Extreme... my upload speed still 1 MB and hasn't upgrade yet... I guess I have to wait till December 1 before I can call and ask?

I am in Scarborough, near McCowan and Steeles area.