Home » Broadband Speed »Comcast/Xfinity »Competition »Consumer News »Cox »Online Video » Currently Reading:

Cable Industry Readies DOCSIS 3.1 – Up to 10/1Gbps, If They Decide You Need It

Phillip Dampier June 12, 2013 Broadband Speed, Comcast/Xfinity, Competition, Consumer News, Cox, Online Video 3 Comments


Cable operators are getting ready for competition from Google and other fiber providers with an upgrade to the cable broadband standard DOCSIS that will support up to 10/1Gbps service.

Comcast chief technology officer Tony Werner told attendees at the Washington, D.C. Cable Show that DOCSIS 3.1 will deliver about a 50% improvement in spectrum efficiency.

The new standard relies on orthogonal frequency-division multiplexing (OFDM), a standard already used by the wireless industry to get tighter performance from existing wireless spectrum.

The cable industry’s weakness remains its broadband upstream capacity. Standards originally developed for cable broadband assume users will download far more content than upload, so the focus has always been on download speeds. Upload speeds have been anemic in comparison. Until recently, cable technicians worried they would have to dedicate considerably more bandwidth for faster upstream speeds, but with improved standards, that may no longer be true.

Time Warner Cable’s chief technology officer Mike LaJoie is convinced his company will not have to widen upstream bandwidth. Time Warner has been among the stingiest providers of broadband speed upgrades,  still offering residential customers in most service areas a maximum of 50/5Mbps service, even as Comcast has upgraded to 305Mbps in certain markets, mostly in the northeast. This week Comcast demonstrated 3Gbps broadband, primarily to prove the cable broadband platform will be able to compete with fiber technology.



The first trials of the new broadband standard are anticipated in 2014, with modems for sale later that year or early 2015. Comcast is expected to begin buying and deploying DOCSIS 3.1-capable modems “when it makes financial sense.”

Major speed increases will require cable companies to accelerate the transition to all-digital video platforms to free up available cable spectrum. The faster the offered speeds, the more channels must be dedicated to providing broadband. Operators don’t see a space crunch anytime soon, especially if they move towards an all-IP platform that would support all services through a giant broadband pipe.

Cox Cable, for example, is planning to move more of its analog channels to digital to free up capacity for faster broadband speeds.

But exactly when consumers will be able to use the faster speeds possible from DOCSIS 3.1 is up to your provider.

Time Warner Cable is not convinced customers even need or want 100Mbps speed, so expect some cable companies to not even attempt gigabit broadband for years to come.

LaJoie dismissed triple digit megabit speeds as a novelty that is not “very deeply penetrated” in the marketplace — marketspeak for “not attracting many customers.”

“There has not been a demonstrated appetite for it,” LaJoie said.

0 0 votes
Article Rating
Newest Most Voted
Inline Feedbacks
View all comments
9 years ago

Oh its wanted 3.1 Docsis speeds for sure; the problem is big content providers and their pricing schemes are the number one major obstacle along with unrealistic rate caps that stand in the way of progress. Theres no need for some big wig at the Major ISP’s to decide this for us. The technology will continue to progress irregardless. Its just a matter of testing and deployment wide scale and early adoption by the masses who most certainly do want huge QAM’s freq’s on the upstream and downstream bands. The only other thing is approval on HFC networks to allow… Read more »

Search This Site:


Recent Comments:

Your Account:

Stop the Cap!