 dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | reply to jchambers28
Re: Speed increase for arkansas said by jchambers28:what would make sense Premier had 5.5 and ultimate had 10 MBPS. Is it possible to do 10 Mbps upload without channel bonding? I also wonder when "soon" will be.
Cablevision is doing 15 megs up without bonding so it *is* possible however theres no need in your area if competition sucks[no fibre, muni in your area] FORGET about 10mbps upload in centurylink areas. |
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HossSauters A Walrus
join:2000-10-05
Tulsa, OK | reply to lilstone87
said by lilstone87:said by jchambers28:Why don't cox try to up the QAM leval? I wish I had a crystal ball to see what cox is offering in the future?
Same reason behind the issue with using 64QAM on the upstream. higher SNR required to maintain, and noise levels have to stay low. Trust me there has been testing of 256QAM, but the conditions have to be very good. A rebuild in 2000 though doesn't equal infrastructure for 2012. Cox did the same kind of rebuild over the course of two years here in Tulsa (from 1999-2001) that was just their fiber rebuild. I'm guessing your 2000 rebuild was the same thing. 1999-2001 was still DOCSIS 1 territory. |
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| They replaced everything. They bought out Multimedia Cablevision in 2000 and replaced all the cabling. |
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HossSauters A Walrus
join:2000-10-05
Tulsa, OK | said by jchambers28:They replaced everything. They bought out Multimedia Cablevision in 2000 and replaced all the cabling.
That's pretty much what they did here, but at the time Cox wasn't doing their own Cable ISP, they were using @Home until they went in the tank. |
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Reviews:
 ·Cox HSI
 ·Cox VOIP
| reply to jchambers28
100 MBPS service I know it's a little old but they are hinting 100 Mbps in the near future.
»news.cnet.com/8301-30686_3-10347···ncol;txt
will you buy it? |
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Reviews:
·Cox HSI
| i would be more interested in symmetrical tiers
too me 100/10 is no big deal i mean your gonna alot of money for it
but only 10mbps on the upload side?
too me that's not worth it
i see cox going in this direction as well
if the provider offered 100/25 than i would buy in |
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| the only problem is upload takes more fiber capacity than download. I used to work for a cable company in 2000 as a main line fiber installer. |
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dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4
1 edit | reply to jchambers28
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dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | reply to bryant313
said by bryant313:i would be more interested in symmetrical tiers Me too. uploading raw video wouldn't be as painful with at least 25 megs up. |
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 bbeesleyVIP
join:2003-08-07
Richardson, TX
kudos:4 | reply to jchambers28
said by jchambers28:the only problem is upload takes more fiber capacity than download. I used to work for a cable company in 2000 as a main line fiber installer.
It's actually an RF issue, not a fiber issue
in DOCSIS the upstream channels have less carrying capacity than the downstream channels and are more likely to be impacted by noise as they are down lower in the RF spectrum
1550nm (return) and 1310nm (forward) on fiber essentially can carry the same amount of bandwidth for similar effective distances |
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dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | Why can't upstream use higher freqs?
I know its the docsis spec but why?
--
2012 red envelopes: 02 actually deserved: 00 |
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| reply to jchambers28
Premier and ultimate speed will be going up by the end of march to what is currently unknown at this point. |
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bbeesleyVIP
join:2003-08-07
Richardson, TX
kudos:4 | reply to dvd536
said by dvd536:Why can't upstream use higher freqs?
I know its the docsis spec but why?
DOCSIS 3 allows for either 5-42Mhz or 5-85Mhz edge to edge - yet another reason to get rid of 1.x and 2.x modems I suppose  ....but it really isn't practical to use the carriers below 20Mhz because of interference. Almost all the MSO plant their upstreams in at somewhere between 20-42Mhz and the higher the better.
the opportunity to pack more carriers in above 42Mhz could offer more upstream channels but that is where analog TV lives so that would only be practicable in an all digital video system |
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Reviews:
·Cox HSI
| reply to jchambers28
said by jchambers28:Premier and ultimate speed will be going up by the end of march to what is currently unknown at this point.
Well if this info is true for your area, there could be a chance its related to upstream channel bonding. Because if they are indeed gonna bump ultimate speeds up, I don't see much of one on the downstream. But there is always room for improvement regarding upstream speed. Like I said though we will see at the end of march, because we have yet to see any kind of speed boost on ultimate, in any of the few markets that have done some sort of speed increase so far. |
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dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | said by lilstone87:said by jchambers28:Premier and ultimate speed will be going up by the end of march to what is currently unknown at this point.
Well if this info is true for your area, there could be a chance its related to upstream channel bonding. Because if they are indeed gonna bump ultimate speeds up, I don't see much of one on the downstream. But there is always room for improvement regarding upstream speed. Like I said though we will see at the end of march, because we have yet to see any kind of speed boost on ultimate, in any of the few markets that have done some sort of speed increase so far. Ultimate *really* needs its upload rate boosted.
as it is now theres no value in ultimate other than a larger cap.
sure it has gobs of download bandwidth that go largely unused in realworld usage. |
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| reply to jchambers28
I agree with you on that. I am sure I could find a way to saturate 50 Mbps on download. The upload is on the wimpy side. |
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| reply to bbeesley
From what I have read it is actually much less a a channel issue, and much more laser issue. Basically, downloads have worked as well as they have b/c the head-end controls the scheduling of the data transfer. Whereas with upload, the head-end cannot prioritize what you send them, so the laser that actually encodes/transmits the data has trouble keeping up with this on-demand request.
Why have certain providers nonetheless provisioned high uploads or bonded upstreams while others have not?
Well, from the Motorola/Cox study, it seems to be partly due to a difference in hardware, and partly software. Some lasers are better able to handle the upload than others; so in the near term software will be able to prolong the longevity of the lasers used in some older plants, but in the long-term hardware upgrades are most defin. necessary to be able to comfortably provide what most of us are looking for.
(»www.motorola.com/staticfiles/Vid···S-EN.pdf) |
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bbeesleyVIP
join:2003-08-07
Richardson, TX
kudos:4 | said by thedunlap:Why have certain providers nonetheless provisioned high uploads or bonded upstreams while others have not?
because noise is cumulative and the return frequencies are more susceptible to noise than the forward. It is much more complicated to get the return RF cleaned up to allow higher order modulations and channel bonding to be used to provide more bandwidth...especially when so many of the problems such as bad fittings and kinked cable that can affect the return path originate in peoples homes.
It takes time to go out and sweep miles and miles of RF plant and correct deficiencies and some cable providers in different markets have had more time to get ahead of this, or they might just have newer plant to give them an operational advantage.
Arris gave a great paper on the subject entitled "DOCSIS 3.0 Upstream Channel Bonding Performance Analysis in the Presence of HFC Noise" at the 2009 SCTE Conference on Emerging Technologies
»www.arrisi.com/resource_ctr/whit···oise.pdf |
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Reviews:
·Cox HSI
 ·World Lynx
| reply to wazzupg
said by wazzupg:I wonder why preferred has a faster upload speed of 4 Mbps, compared to premier 2 Mbps!
Glad I just downgraded to preferred! I still get the same download speeds with my D3 modem, but get better upload.
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dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | said by N10Cities:Glad I just downgraded to preferred! I still get the same download speeds with my D3 modem, but get better upload.
yeah[well at least 20 seconds of the download] |
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