dslreports logo
site
spacer

spacer
 
   
spc
story category
First DOCSIS 3.1 Modems to Hit 4-5 Gbps
by Karl Bode 02:23PM Thursday Oct 24 2013 Tipped by telcodad See Profile
While new DOCSIS 3.1 modems should ultimately be capable of hitting 10 Gbps downstream, 1 Gbps up (albeit shared across numerous users on a node), the first modems to be released will likely "only" be capable of half of those speeds initially. The first wave of modems will be 3.0/3.1 hybrids, with the DOCSIS 3.1 half combining two channels/blocks orthogonal frequency-division multiplexing (OFDM) at 192MHz-wide each, and two 96MHz-wide channels for the upstream. Considering how rare anything over 150 to 300 Mbps is among cable operators (Comcast does offer a 505 Mbps tier though that's technically hybrid fiber to the home), that certainly shouldn't be a problem initially.

view:
topics flat nest 

skeechan
Ai Otsukaholic
Premium
join:2012-01-26
AA169|170
kudos:2
Reviews:
·Clear Wireless
·Cox HSI
·Verizon FiOS

1 recommendation

Hard to get excited...

...with the glacial pace of upgrades I receive from my MSO (even while other markets get theirs).

So even after deployment begins with my provider, it will be a week after forever before I actually see it in my franchise area.
--
Nocchi rules.

Streetlight

join:2005-11-07
Colorado Springs, CO

How much will 10 Gbps cost?

I'm not sure I could afford $1,000 per month for 10 Gbps internet speed. Maybe if I were running a business with 100s of simultaneous users, it might be cost effective, otherwise for a home user, I'm not sure.
rradina

join:2000-08-08
Chesterfield, MO

Re: How much will 10 Gbps cost?

Per the article, this is the maximum rate of the modem when bonding two 192Mhz channels. Even though my current "classic" D3 modem is bonding eight 6mhz channels (theoretical max downstream of ~350Mbps), I only have a 30/4 plan from Charter. With a 4-5Gbps maximum signal rate, they won't offer anyone the maximum speed. They'll probably use that capacity to offer folks 300, 500 or maybe even 1000, depending on how many folks on the node have to share the capacity.

odog
Cable Centric Vendor Biased
Premium,VIP
join:2001-08-05
Atlanta, GA
kudos:18

Re: How much will 10 Gbps cost?

Anything over a gig is a bit ludicrous since ya know..... gigabit Ethernet.

I doubt we'll ever see a home router with a 10 Gig interface. But do reserve the right to redact this in 25 years.
rradina

join:2000-08-08
Chesterfield, MO

Re: How much will 10 Gbps cost?

If they would offer more than 1Gbps, it's likely they would pair it with a device that might offer multiple 1Gbps ports. That would allow multiple 1Gbps devices to operate at full speed.
Joe12345678

join:2003-07-22
Des Plaines, IL
cost what about the cap? at that speed you can rack up fast with the price being the same $10 for 50GB after the base of 500GB (real cap may be lower).
TBBroadband

join:2012-10-26
Fremont, OH

Re: How much will 10 Gbps cost?

reaching your cap wouldn't change unless you decided to go on a download spree.

88615298
Premium
join:2004-07-28
West Tenness
said by Joe12345678:

cost what about the cap? at that speed you can rack up fast

faster speed doesn't mean you use more unless you're just torrenting the shit out of everything. Netflix doesn't run any faster on a 10 Gbps connection than it does on my 30 Mbps connection.

buzz_4_20

join:2003-09-20
Limestone, ME

Re: How much will 10 Gbps cost?

True, however, now more people can use Netflix/Hulu/Amazon at the same time, without impacting each other.
Bengie25

join:2010-04-22
Wisconsin Rapids, WI
"faster speed doesn't mean you use more unless you're just torrenting the shit out of everything. Netflix doesn't run any faster on a 10 Gbps connection than it does on my 30 Mbps connection."

I'll have to remember this great point.
ualdayan

join:2004-07-17
Antioch, TN
Not necessarily torrenting, but faster speeds do mean you use it more. Take PS4/Xbox One games that are estimated to be around 50GB. You can bet I'd buy more digitally if it was 'click it, and 7 minutes later the full thing has been downloaded' over a true 1,000Mbps connection versus 'click it and 6 HOURS later the full thing has been downloaded' over a 20Mbps connection.

Same goes for the inevitable 4k streaming websites, I might pay $4-5 more to rent a movie in 4K versus 1080p but not if it means having to wait 2 hours to see a movie versus being able to see it right that moment.

Higher speeds lets you receive higher quality video - not necessarily MORE in quantity, just higher quality will make you use a lot more data.
ke4pym
Premium
join:2004-07-24
Charlotte, NC
Reviews:
·Northland Cable ..
·Time Warner Cable
·ooma
·VOIPO
·Verizon Broadban..
said by Streetlight:

I'm not sure I could afford $1,000 per month for 10 Gbps internet speed. Maybe if I were running a business with 100s of simultaneous users, it might be cost effective, otherwise for a home user, I'm not sure.

And if you're going to do that, you're going to go with a MetroE contract...
Bengie25

join:2010-04-22
Wisconsin Rapids, WI

Re: How much will 10 Gbps cost?

The hosting part you'd get MetroE, but I can see 10gb to the home starting to show up in the next 5 years. I did say "starting". 1gb will last for quite a bit.
MaynardKrebs
Heave Steve, for the good of the country
Premium
join:2009-06-17
kudos:4
Caps will still start @ 5GB/month
ocjosh

join:2013-03-19
united state

Re: How much will 10 Gbps cost?

Costs are the major road block nowadays. Verizon FIOS offers 500Mbps download and only charges $300-400. How is that?

buzz_4_20

join:2003-09-20
Limestone, ME

So...

How about a nice 100/100 tier?
That wouldn't be to hard would it?

tshirt
Premium
join:2004-07-11
Snohomish, WA
kudos:5
Reviews:
·Comcast

Re: So...

Not going to happen soon.
By design DOCSYS is unbalanced, heavy download less upload.
at least 3/1 but most likely 8-10/1 ratios will exist in the plant.
IF the give you 100/100, they'll need to find a customer willing to use the other 900 "download only" for say IPTV or similar uni-directional streams at a similar price per bit.
OR your 100/100 account would be priced like a 1gig/100mbps tier (cable company retail pricing, not backbone transport rates)

motorola870

join:2008-12-07
Arlington, TX
kudos:4

1 edit

2 recommendations

pipe dream (wont happen for a long time)

I don't see cable providers really pushing this out in the next few years as it is impossible without major network upgrades. 2 96MHz wide upstream channels got to be joking. I don't think so as this would require the cable company to replace all amplifiers and it isn't worth it right now as cable providers are just now beginning to use 5-42MHz for upstream to its full potential for DOCSIS 3.0. Also every box, modem and anything to do with the cable plant would have to be replaced as they wouldn't be able to keep linear TV and that would require substantial capital meaning things from DTAs, digtial adapters, VOD servers, and even CMTSs would have to be upgraded. Too costly for now maybe in 2020! We may get lucky and cable decides to figure out that don't touch 5-1500MHz and go for 3GHz cable systems and do a second upstream and downstream path from 1500MHz to 3000MHz and put DOCSIS 3.1 there otherwise we won't ever see it.

more realistic approach would have been 12MHz/24MHz wide upstream channels and 48MHz wide downstream channels with OFDM. 96MHz and 192MHz is too greedy! No cable system is going to have 192MHz to set aside just for downstream on DOCSIS 3.1. The real solution for several years is expanding the downstream to 16 QAM carriers and make the upstream 4 QAMs wide 6.4MHz as anything better than that is unrealistic. TWC in my area is finally able to move 3 6.4MHz upstreams with a legacy 3.2MHz upstream so don't look for DOCSIS 3.1 for years.
cramer
Premium
join:2007-04-10
Raleigh, NC
kudos:9

Re: pipe dream (wont happen for a long time)

EXACTLY. Do the math (192 * 2 + 96 * 2 = 576Mhz) for just data. In an 850MHz cable system, that leaves room for 45 QAMs. That is the very definition of Not. Freakin'. Going. To. Happen! If they switched to IPTV instead of QAM, then maybe, but that's also not going to happen anytime in the next century (as it would junk billions in infrastructure.) Heck, there's enough trouble already with D3 attempting to go above 45(54?)MHz upstream... many amps, including the little multiport household drop amps currently being installed, don't go up to 85MHz.

elios

join:2005-11-15
Springfield, MO

2 recommendations

OR they could just go FTTH and not have ANY of the issues...
danielholt

join:2013-04-22
Wake Forest, NC

Re: pipe dream (wont happen for a long time)

i 2nd FTTH

RWSI

join:2012-11-27
Albuquerque, NM

Suffer

Cable TV channels will have to go. Poor upstream and what next? Systems will have to upgrade at great expense to 1GHz. Customers will have to pay for the access. Next they will have to find a better way of getting power supplies to actually work when the power goes out.

motorola870

join:2008-12-07
Arlington, TX
kudos:4

2 recommendations

Re: Suffer

not worth the $$$ too much equipment to just sent to the dump. The best option would be to run dedicated fiber for customers that want the very fast internet tiers like comcast does otherwise the cost to invest in a single cable plant may be too much to realize the ROI for offering faster speeds. There is no such thing as suffering the loss of cable channels because cable channels are not going anywhere. And the whole idea of a dumb pipe won't work because they will find ways to charge overages for internet.

what happened to 24MHz wide channels?

»adslm.dohrenburg.net/uverse/inde···Itemid=6

»www.lightreading.com/author.asp?···d=701993
Bengie25

join:2010-04-22
Wisconsin Rapids, WI
Reviews:
·Solarus

1 recommendation

Re: Suffer

Yeah, I don't get it. 1gb fiber is commodity pricing, why spend so much money on equipment that will be outdated quickly and limited by physics in the near future?

10gb over copper is going to be near the limit before the price for tech will start to sky-rocket.
smcallah

join:2004-08-05
Home
This is a step towards IPTV for cable companies, not just more bandwidth for Internet. They eliminate TV channels on QAMs, convert over to OFDM for these new modems. Deliver multicast IPTV, unicast IP VOD, and Internet over the modem. IPTV still a few years away, but so are these new modems and CMTS. Which really won't be just a CMTS, it will be an all in one box delivering all QAMs and DOCSIS channels. Otherwise known as Converged Cable Access Platform, or CCAP.
decifal

join:2007-03-10
Bon Aqua, TN
kudos:1

wow

Man with the upcoming caps, not only will you slam into the cap wall, you may create a wormhole while doing so!! Least share holders will be happy.. Ya know, as long as they don't actually use the service

Kommie
Premium
join:2003-05-13
united state
kudos:3

2 recommendations

FTTH

It would be cheaper for the provider to go Fiber To The Home, than to deploy this. Comcast is already taking the fiber route in Washington, D.C.

tshirt
Premium
join:2004-07-11
Snohomish, WA
kudos:5
Reviews:
·Comcast

1 recommendation

Re: FTTH

And EVENTUALLY will get there everywhere (at least as far as the nearest strand/light pole) but in the meantime they won't abandon years of investment in the current plant when it can continue to morph into faster and faster speeds while extending the fiber plant further into the last mile.

treichhart

join:2006-12-12

Re: FTTH

FTTH is going to be dead soon due to the cost of doing the install and stuff you know it does cost about million dollars for every 10 ft of fiber being laid down. That is why you dont see FTTH being setup in rural america because of the major cost of laying down Fiber. Only way to get fiber every where is that customers going have to pay more for internet or the ISP haves to get money from the government to do this due to cost of laying fiber out.

elios

join:2005-11-15
Springfield, MO

Re: FTTH

got any thing to back that up

treichhart

join:2006-12-12

Re: FTTH

yea I used to work in the field so I know how much it cost to get fiber layed

••••••••••••••••
tmc8080

join:2004-04-24
Brooklyn, NY
Reviews:
·ooma
·Optimum Online
·Verizon FiOS

who's going to be FIRST?

place your bets:

Comast (1:2 odds)
Cablevision (3:1 odds)
Time Warner (150:1 odds, ie long shot)
Cox (6:1 odds)
Wildcard (any other: 50:1)

Yeah, as other said, price will be the single most important factor in mass adoption by consumers. If they can't bring the gigabit tier down to $300 a month, fuggedaboudit. What will be more interesting is 500mbit at $125, 250 at $70, 125 at $35... there'll be plenty of takers on the lower two tiers under this suggested pricing model (give or take)-- and as close to symmetrical as possible please.
stridr69

join:2003-05-19
San Luis Obispo, CA

Re: who's going to be FIRST?

You forgot Charter...at 500:1 odds....
cooperaaaron

join:2004-04-10
Joliet, IL

I don't want....

a half and half product... Just give me the full boat, no hybrids!