Comms chips

Verizon: MoCA Needs Some Speed

AUSTIN, Texas -– Verizon Communications Inc. (NYSE: VZ) says the Multimedia over Coax Alliance (MoCA) should make the throughput for its home networking technology specification at least four times faster than it is today.

To keep pace with in-home capacity requirements, the next generation of MoCA must support about 400 Mbit/s in less than two years, according to Mark Wegleitner, Verizon's CTO and senior VP of technology, who spoke here Thursday morning at the first annual MoCA technology conference.

Hitting that number will take some serious engineering. The throughput for the MoCA 1.0 and the coming 1.1 version is 270 Mbit/s, with an average, usable, net throughput of approximately 100 Mbit/s for 1.0, and roughly 175 Mbit/s for 1.1, a spec that MoCA ratified just last month. (See MoCA Upgraded .)

MoCA CTO Dr. Anton Monk did not pinpint the PHY rate necessary to achieve net throughput of 400 Mbit/s, but acknowledged that the home networking scheme will require a wider band. The channel bandwidth for the existing versions of MoCA is 50 MHz. But simply quadrupling that bandwidth might not be necessary if the Alliance can squeeze more usable MAC capacity from MoCA's theoretical PHY throughput.

A loftier speed mark is just one new element MoCA is considering for 2.0. The Alliance has not determined, or at least shared publicly, what other new or enhanced features it might include. (See MoCA 2.0 .)

Although Comcast Corp. (Nasdaq: CMCSA, CMCSK), Cox Communications Inc. , and EchoStar Satellite LLC are all founding MoCA members, none have stated plans for a massive rollout. Comcast, which could begin to deploy multi-room DVRs in some markets by the third quarter of 2008, has not even selected its home networking backbone technology. Serious adoption for MoCA by these providers might be slowed if they opt to wait for the added benefits of 2.0. (See Comcast Plots Multi-Room DVR.)

Verizon, meanwhile, is well down the MoCA road.

According to Wegleitner, Verizon has more than 3 million MoCA devices installed in FiOS TV customer homes.

Considering the telco's deployment and customer ramps, that number will only continue to rise. Verizon ended the third quarter with 717,000 FiOS TV subs and is adding about 3,200 new video customers per day. On the high end, the company forecasts having 4 million FiOS TV subs by 2010.

MoCA, he said, "is a critical part of our... total network architecture."

Today, the managed FiOS TV networking environment uses two discrete MoCA networks -– one that communicates with the optical network terminal (ONT), and another that talks to set-tops and supports multi-room DVR and apps such as "widgets," an interactive, IP-based feature that feeds weather, news, and other data to the customer's TV screen.

Wegleitner also addressed Verizon's video plans and its eventual roadmap toward an all-IP environment.

Today, Verizon delivers broadcast video via an RF overlay, similar to cable's approach, but uses IP to pipe in video-on-demand (VOD) content and widget data. Eventually, Verizon plans to introduce an IP video hub office and eliminate the analog transmission package. In "phase three," the company will use IP to deliver VOD, interactive capabilities, and a few broadcast channels. The fourth phase will be a full migration to IPTV multicast and the elimination of the overlay.

Wegleitner did not give a time frame for reaching that final step in the strategy, but emphasized that Verizon is not in a great hurry to do so. "The migration to [all] IPTV will be at a very measured pace," he said.

— Jeff Baumgartner, Site Editor, Cable Digital News

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COMMENTS Add Comment
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PhGeek 12/5/2012 | 2:58:44 PM
re: Verizon: MoCA Needs Some Speed I'm counting on you journalists and editors to uphold the English language. If you won't, then who will? Keep your eyes on this one--they are two different words with differing meanings:

"discrete" = separate
"discreet" = tactful

The first of these was clearly the intended one in this article.
Larry, Monkey 12/5/2012 | 2:58:43 PM
re: Verizon: MoCA Needs Some Speed Thanks for the English lesson. The indiscretion has been amended.
Jeff Baumgartner 12/5/2012 | 2:58:42 PM
re: Verizon: MoCA Needs Some Speed Yes, good catch...lesson re-learned
bollocks187 12/5/2012 | 2:58:37 PM
re: Verizon: MoCA Needs Some Speed It is amazing that Verizon would make such a comment since they have built a BW constrained network in FiOS !.

With outrageous requirements on the components used in FIOS and a "strangle hold" on vendors pricing to get into their networks.

bollocks187 12/5/2012 | 2:58:37 PM
re: Verizon: MoCA Needs Some Speed MOCA and 400 Mbps is unrealistic since the feed in the last mile PON, xDSL do not have the capacity.
paolo.franzoi 12/5/2012 | 2:58:37 PM
re: Verizon: MoCA Needs Some Speed
Actually GPON does have that kind of bandwidth. 2.5g/1.2G > 400M.

What are you talking about?

bollocks187 12/5/2012 | 2:58:35 PM
re: Verizon: MoCA Needs Some Speed
With a GPON (2.5G/1.2) as a shared medium serving 16-32 homes then bandwidth averages out at 150/70M Max.

paolo.franzoi 12/5/2012 | 2:58:34 PM
re: Verizon: MoCA Needs Some Speed
Max DEDICATED non-oversubscribed bandwidth. Which at that point we all have 50K or so bandwidth as that is the BW per total number of subs on the Internet.

GPON is NOT dedicated bandwidth. It is statistically allocated - just like any other packet medium. Therefore, trying to take 2.5G/32 does not represent what an individual customer may receive at any time.

So, if you say gee they only DEDICATE 100Mbps in the access per customer that is directionally correct. But it has nothing to do with what any individual customer may or may not receive in terms of actual bandwidth.

So, you may want to rethink your statements.

bollocks187 12/5/2012 | 2:58:31 PM
re: Verizon: MoCA Needs Some Speed Seven,

I don't think so, it is a stupid request from Verizon with GPON (622Mbps) and not quite yet 1.2Gbps.

Bursting to 400Mbps per subscriber (even one) for a yet undisclosed application in the home using a GPON access network is stupid at this time.
Furthermore with little real Marketing data it is causes unecessary expense. GPON ONTs are already loss making products because of over specified Verizon specifications.

Hey after all 1.2Gbps was ONLY introduced cause EPON ran at 1G and therefore out performed GPON at 622Mbps ;-)

No rethinking required at this time - this is another case of 'marketing BS' from a carrier such as Verizon - after all the world was once goign to be ALL ATM from their perspective.

With say 2-3 TV (1HD and 2SD) sets and internet gaming access per susbscriber lets say its 50Mbps per subscriber. One can always have less subs per GPON OLT - but there is no market for 400Mbps access on GPON for MOCA access.

paolo.franzoi 12/5/2012 | 2:58:31 PM
re: Verizon: MoCA Needs Some Speed
You have clearly missed the potential application in MDUs.

Current deployments of FiOS are BPON not GPON. Verizon is supposed to deploy GPON starting next year. Given that the silicon would have to be developed and then devices on top of that, applications are 2 years+ away. Which would be in the GPON timeframe.

GPON is planned to be deployed with 2.4G down 1.2G up.

Note - ATM has been dropped from GPON and EPON has the 8B/10B problem where actually you only get 80% efficiency at the physical layer.

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