& cplSiteName &

Docsis 3.1 Spec Out in Time for Halloween

Mari Silbey
10/21/2013
50%
50%

Beating last's year bold prediction for an end-of-2013 delivery date, CableLabs said today that the new Docsis 3.1 specification will be publicly issued by the end of this month.

Speaking at a Docsis 3.1 Engineering Symposium today held in advance of the annual SCTE Cable-Tec EXPO, CableLabs director Matthew Schmitt said that not only will the new Docsis spec be available sooner than expected, but it will also meet all the industry's objectives for the specification upgrade. Specifically, Docsis 3.1 (D3.1) will offer higher bandwidth capacity, a significant reduction in cost per bit delivered, an effective migration strategy from previous Docsis specs, and the ability to operate new technology on current HFC networks.

Cable operators are also optimistic about the timeline for Docsis 3.1 deployments. Comcast Corp. (Nasdaq: CMCSA, CMCSK) vice president Jorge Salinger said in a panel discussion at the symposium today that, based on the D3.1 discussions to which he's been privy, he believes cable companies "should put it in the budget for [20]15."

Jeff Finkelstein, executive director of strategic architecture at Cox Communications Inc. , said the timeline is really up to the silicon vendors, but he emphasized that his company is willing to do "anything we can do to help."

Time Warner Cable Inc. (NYSE: TWC) senior vice president Howard Pfeffer said D3.1 deployments are expected to start with new modems and gateways, followed by integrations with CCAP devices. Vendors have been heavily involved in the creation of D3.1. That fact and backward compatibility with earlier Docsis versions should help speed the new technology to market. (See Docsis 3.1 Stays on a Fast Track.)

The new Docsis spec is designed to increase spectral efficiency by 50 percent, in part through the use of orthogonal frequency-division multiplexing and in part through a new forward error correction technique enabling higher-order modulations. There are significant advantages for upstream and downstream bandwidth delivery.

An audience member at the symposium made it clear that he's concerned, not only with efficiency, but also with the need to acquire more spectrum to take advantage of D3.1. Finkelstein responded by suggesting a bandwidth reclamation path that includes continued migration from analog to digital signals, the weeding out of standard-definition video channels, and the conversion of more high-definition channels to switched digital video.

Another audience member asked why the new Docsis spec is being dubbed 3.1, rather than Docsis 4.0. Tongue firmly in cheek, Finkelstein answered, "Obviously, so the next version of Docsis can be Docsis 3.14."

— Mari Silbey, Special to Light Reading Cable

(3)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
msilbey
50%
50%
msilbey,
User Rank: Blogger
10/21/2013 | 4:13:02 PM
Re: DOCSIS 3.1 vs FTTH
I think for the most part they'll avoid laying more fiber. They see gigabit deployments like Google Fiber creating a lot of noise, but they don't believe cable has to deliver speeds like that today. Average take rates for the highest speed tiers are still low.
craigleddy
50%
50%
craigleddy,
User Rank: Blogger
10/21/2013 | 3:40:43 PM
DOCSIS 3.1 vs FTTH
Do you think MSOs will wait for DOCSIS 3.1 to get into the marketplace by 2015 or will see some of them start to replace HFC plant with FTTH? I imagine an FTTH rebuild will remain a more expensive and intensive option, but it might offer a quicker path to Gigabit speeds and higher capacity.        
Ray@LR
50%
50%
Ray@LR,
User Rank: Blogger
10/21/2013 | 3:27:19 PM
DOCSIS vs Vectoring/G.fast
This is going to create some very interesting broadband markets, with the aggressive cable operators vs the telcos that have realized there are real gains to be made from deploying VDSL2+vectoring (with everyone involved calling their services fiber broadband, of course).

Of course, this dynamic will only play out in markets where the installed copper plant is in good condition and FTTC deployments are physically possible, but given the impact DOCSIS 3.0 had on, for example, the UK, bring on DOCSIS 3.1 I say!

And interesting that BT today announced a trial of G.fast, which, in theory, can deliver up to 1 Gbit/s over a copper tail...

 

BT Trials Huawei's G.fast for FTTx

http://www.lightreading.com/broadband/fttx/bt-trials-huaweis-gfast-for-fttx/d/d-id/706166

 

 
Featured Video
From The Founder
Light Reading founder Steve Saunders grills Cisco's Roland Acra on how he's bringing automation to life inside the data center.
Flash Poll
Upcoming Live Events
February 26-28, 2018, Santa Clara Convention Center, CA
March 20-22, 2018, Denver Marriott Tech Center
April 4, 2018, The Westin Dallas Downtown, Dallas
May 14-17, 2018, Austin Convention Center
All Upcoming Live Events
Infographics
SmartNICs aren't just about achieving scale. They also have a major impact in reducing CAPEX and OPEX requirements.
Hot Topics
Here's Pai in Your Eye
Alan Breznick, Cable/Video Practice Leader, Light Reading, 12/11/2017
Ericsson & Samsung to Supply Verizon With Fixed 5G Gear
Dan Jones, Mobile Editor, 12/11/2017
Verizon's New Fios TV Is No More
Mari Silbey, Senior Editor, Cable/Video, 12/12/2017
The Anatomy of Automation: Q&A With Cisco's Roland Acra
Steve Saunders, Founder, Light Reading, 12/7/2017
Netflix Evaluating AI for Personalized Trailers
Aditya Kishore, Practice Leader, Video Transformation, Telco Transformation, 12/8/2017
Animals with Phones
Don't Fall Asleep on the Job! Click Here
Live Digital Audio

Understanding the full experience of women in technology requires starting at the collegiate level (or sooner) and studying the technologies women are involved with, company cultures they're part of and personal experiences of individuals.

During this WiC radio show, we will talk with Nicole Engelbert, the director of Research & Analysis for Ovum Technology and a 23-year telecom industry veteran, about her experiences and perspectives on women in tech. Engelbert covers infrastructure, applications and industries for Ovum, but she is also involved in the research firm's higher education team and has helped colleges and universities globally leverage technology as a strategy for improving recruitment, retention and graduation performance.

She will share her unique insight into the collegiate level, where women pursuing engineering and STEM-related degrees is dwindling. Engelbert will also reveal new, original Ovum research on the topics of artificial intelligence, the Internet of Things, security and augmented reality, as well as discuss what each of those technologies might mean for women in our field. As always, we'll also leave plenty of time to answer all your questions live on the air and chat board.

Like Us on Facebook
Twitter Feed