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DOCSIS 3.1 Is Right on Schedule

Brian Santo
9/24/2015

LOUISVILLE, Colo. -- Earlier this week CableLabs demonstrated that development work on DOCSIS 3.1 technology is progressing right on schedule. Cable companies should have D3.1 installations up and running in early 2016.

Some notes from the CableLabs interop: There were a couple of new products publicly demonstrated for the first time during the demos, and test and measurement (T&M) companies were given a surprising yet thoroughly deserved co-starring role at the event. Representatives from Broadcom Corp. (Nasdaq: BRCM) said the company's new D3.1 chipset -- eagerly awaited by nearly everyone making D3.1 equipment -- will be moving into full production in a few weeks, which was slightly more temporal specificity than previously available.

Also, CableLabs said it has added a new procedure meant to aid the process of getting DOCSIS products ready for market. The organization certifies cable modems (CM) and qualifies cable modem termination systems (CMTS). In June it began a new "dry run" program that helps vendors prepare their products to be submitted for certification/qualification. (CableLabs is just now wrapping a cert wave; it will announce the results in the near future.)

Getting demonstrative
At the event, the organization set up several different demonstrations, each showing the status of a different characteristic of the new cable transmission standard. One demo illustrated that improvements in the spectral efficiency of D3.1 technology over D3.0 will be much closer to the high end of the projected range (25%-50%); one showed that the broadband speeds MSOs will be able to offer right off the bat could exceed 4.5 Gbit/s; yet another demonstrated that D3.1 is fully backward-compatible with D3.0.

The spectral efficiency and backwards-compatibility were originally thought to be among D3.1's most salient benefits; an operator could implement DOCSIS 3.1 technology in stages, mixing and matching D3.0 and D3.1 technology as needed, to gradually liberate spectrum which could then be used for other purposes -- adding TV channels, for example, or clearing space for 4K content. A closely associated benefit is the reduction in cost per bit, which will help minimize operating costs.

The ability to bond enough channels to offer any individual customer broadband service at 1 Gbit/s (and eventually up to at least 10 Gbit/s) is another key benefit, but who needs a gigabit coming into their homes? Not many people today.

Google Fiber Inc. made "need" irrelevant in 2012 when it started offering gigabit service for $70 a month, however. Now gigabit is all about "want." For $70? Hey, why not? Verizon Communications Inc. (NYSE: VZ), AT&T Gigapower , and CenturyLink Inc. (NYSE: CTL) followed suit with fiber-based gigabit services. Meanwhile, cable companies relying on the current 3.0 iteration of DOCSIS have been able to counter with a maximum of about 300 Mbit/s.


Want to know more about the impact of web services on the pay-TV sector? Check out our dedicated OTT services content channel here on Light Reading.


So any cable operator up against either Google or a telco with fiber now has a keen interest in offering gigabit services.

Comcast Corp. (Nasdaq: CMCSA, CMCSK) is champing at the bit to offer realistic gigabit services as soon as it can. The company's Gigabit Pro service announced earlier this year is not price competitive at all, and includes an installation process that is ridiculous in terms of both complexity and cost; the service is a marketing stopgap at best. (See Comcast Trots Out Gigabit Pro… at a Price.)

Comcast CTO Tony Werner reiterated his company's intention to start deploying DOCSIS 3.1 as soon as it becomes available. After that, he would say only that he's pleased with the progress the industry is making with D3.1. "There are a lot of things I lose sleep over," he told reporters. "I'm not losing any sleep over this. It's going to work, and it's going to work as advertised."

Each of the several demos was centered on a CMTS paired with a set of different cable modems, along with the T&M equipment necessary to prove that the CMTS/CM combinations were doing what they were supposed to be doing.

Arris Group Inc. (Nasdaq: ARRS), Casa Systems Inc. , Cisco Systems Inc. (Nasdaq: CSCO) and Huawei Technologies Co. Ltd. had demos built around their CMTSs. Casa CEO Jerry Guo pointed out that the Casa CMTS was running the company's new DS8x192 board, introduced at the end of August.

Huawei's was the only one to anchor more than one demo. The company proudly proclaimed it is first to deliver a system using OFDMA on the upstream, and the only CMTS vendor to be performing DOCSIS 3.1 registration. [Note: Casa says it too has implemented OFDMA on the upstream; it just didn't demonstrate it on Monday.]

Huawei engineers were clearly hoping this demonstration of technological prowess would establish the company's bona fides and catch the attention of North American MSOs, who have yet to be seen in public doing so much as giving Huawei the time of day. TDC in Denmark is the only cable operator known to be testing Huawei's CMTS.

Cable modems involved in the various demonstrations included models from (in no particular order) Askey, Castlenet, Humax, Technicolor (both its own and Comcast’s Xfinity), Sagem, Netgear, Pace, and Ubee.

Technicolor (Euronext Paris: TCH; NYSE: TCH) touted a model with a diplex switch that would allow it to operate on plants that are split at either the current 42MHz or at the so-called mid-split of 85MHz.

Humax Co. Ltd. showed a voice-activated, MoCA-based model that can be used on plants with the 85MHz split. The Humax CM featured 4x4 WiFi, but an 8x8 model is due next year.

Not part of the demos but being passed around for inspection was a cable modem mock-up from Intel Corp. (Nasdaq: INTC) that was significantly smaller than the average CM -- roughly the size of an Apple TV puck, housed in Intel-blue plastic.

Next page: A walk on the T&M side

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KBode
KBode
9/27/2015 | 10:14:29 AM
Re: service offerings
The same story is playing out in a LOT Of markets where phone companies aren't really keeping pace with DSL upgrades, or don't want (or simply can't afford) to spend any serious money on fiber. Even in AT&T U-Verse "upgraded" markets that telco is way, way behind cable in terms of speed. Which made their decision to buy a satellite TV company all the more interesting...
HeadendT36139
HeadendT36139
9/25/2015 | 9:42:52 AM
Re: cable gigabit pricing
Well, it's all a matter of bandwidth allocation. If a cable company moves thier HD and VOD video to MPEG4 it will free up a lot of bandwidth. That's a fairly cheap upgrade in highly centralized video plants. Node segmentation is usually a fairly inexpensive bandwidth increase, if it is availalble. DOCSIS 3.1 compatable CPE deployment will need to happen fairly quicky, but I'm sure the marketing department can come up with an incentive to get people to trade up.

The real long term cost is going to be moving to a mid-split diplex filter. Most of the amplifiers can support it, but someone has to go out and physically swap at least 2 per amp. In even a small system that could be a few hundred stops (and service interruptions) by a line tech or contrator.
davidhoffman5
davidhoffman5
9/24/2015 | 4:45:30 PM
Re: service offerings
If the cable company does not directly compete with a company that is offering such rates, then they have no incentive to do so. If there is no geogrraphical overlap, then there will be NO price matching. Cox Cable could stomp AT&T into the ground in central Gerorgia in terms of internet service pricing. But AT&T offers no real competition, so Cox stays with its speed tiers and caps in a not so competitive way. 
inkstainedwretch
inkstainedwretch
9/24/2015 | 12:55:28 PM
cable gigabit pricing
Most analysts believe Google Fiber is pricing gigabit at below cost. It would not surprise me to learn that the telcos, too, are pricing gigabit at below cost. When the cable ops roll out D3.1 and gigabit service along with it, and if they match their rivals' prices, they'll probably end up offering gigabit at below cost too. If everyone is selling below cost -- and that's what this is looking like -- no one has any particular advantage from a cost standpoint. -- Brian Santo
cnwedit
cnwedit
9/24/2015 | 11:58:55 AM
Re: service offerings
I would agree on the pricing issue. Unless cable puts fiber where it has first-mover advantage - and that's not the expected strategy - being second into a market, even a close-second, with gigabit service won't matter much if their service is extensively more expensive. 

AT&T brought Gigabit into the Chicago area for about the same price Comcast was charging for 50 Mbit/s service. If Comcast wants to compete, they'll have to hit the same price point. 
tmc8080
tmc8080
9/24/2015 | 8:30:56 AM
service offerings
It remains to be seen what pricing will be.. ONLY ATT begrudgingly matches pricing where Google is or will lay down their fiber network... So cable companies have a steep hill to climb to get pricing down.. they could start by offerng services in the 300 to 500 megabits range for $50 to $70.. Time Warner already offers a promo of $65 for 300mbits. No other cable company jumped on that bandwagon yet.. not even comcast.
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