& cplSiteName &

MoCA Takes Spectrum Down a Notch

Jeff Baumgartner
LR Cable News Analysis
Jeff Baumgartner
4/20/2010
50%
50%

The Multimedia over Coax Alliance (MoCA) has added midrange frequencies to its 1.1 specification, which is good news for DirecTV Group Inc. (NYSE: DTV) as the satellite giant gets ready to launch its whole-home DVR next month.

The newly added range covers frequencies from 500 to 1,500MHz. The original spectrum range for MoCA 1.1 was 850 to 1,500MHz.

Monk says there's not much difference between the chips supporting the different spectrum profiles; chips of both types are shipping.

The original range was a better fit for cable's available service spectrum, but it overlaps the L-band (950 to 2,150MHz), which is used by DirecTV and Dish, another MoCA member, to carry video signals from the dish to the satellite receiver. The original MoCA range didn't leave enough separation for proper filtering, says MoCA chief technology officer Anton Monk, who is also the VP of technology at MoCA chipmaker Entropic Communications Inc. (Nasdaq: ENTR).

He says MoCA went with the mid-RF approach over lower frequencies because tests showed that the latter environment is noisy and much more difficult to harness. Spectrum below 20MHz, for example, gets interference from powerlines.

AT&T Inc. (NYSE: T) has been able to make Home Phoneline Networking Alliance (HomePNA) work in lower frequencies for the U-verse TV service, but Monk believes the performance tradeoffs and the work necessary to perform a similar feat with MoCA are too great.

The mid-range approach offers "a very clean band, so it's away from any interference and powerline ingress interference issues," he says. "DirecTV wanted the same performance that cable is getting… without going to low frequencies."

The target performance, in the case of MoCA 1.1, is about 175 Mbit/s of net throughput. (The yet-to-be-ratified MoCA 2.0 platform is shooting for a basic mode that can pump out 400 Mbit/s, and an 800-Mbit/s enhanced mode: See MoCA 2.0 'Enhanced' Mode Target: 800 Mbit/s.)

DirecTV is eager to use MoCA not just for multiroom DVRs, but also to help fulfill its vision for RVU Alliance technology.

In that scenario, DirecTV will be looking to use MoCA and RVU to support thin-client video devices attached to a central video gateway/server. With that in place, DirecTV intends to ship its user interface over the home network to a wide range of remote clients, including IPTV set-tops, TVs, and PCs that can speak the RVU language.

DirecTV is championing RVU, but Verizon Communications Inc. (NYSE: VZ), still the heaviest MoCA user, is also a member of the RVU Alliance and is believed to be pursuing similar plans.

DirecTV has previously said it intends to deploy its whole-home DVR by the first quarter of 2010, but its Website indicates that the product is still in beta testing. A DirecTV spokesman says the company expects to launch it sometime in May. (See DirecTV Picks Entropic and DirecTV Preps Multiroom DVR.)

Can cable play in the new band?
Although the mid-RF approach is targeted to satellite companies, cable could use it as well. The problem, though, is that cable already uses that band to deliver video services on the outside plant, so there are some major interference issues that would need solving.

Monk says he's "heard of some interesting architectures floating around," including a "split gateway," that could tap into the lower MoCA band.

But that would require some extra work by the cable operator. "You'd have to isolate the inside of the house from the outside of the house," Monk explains.

— Jeff Baumgartner, Site Editor, Light Reading Cable

(0)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
From The Founder
Kicking off BCE 2017, Light Reading founder Steve Saunders lays blame for NFV's slow ramp-up and urges telecom to return to old-fashioned standards building and interoperability.
Flash Poll
Live Streaming Video
Charting the CSP's Future
Six different communications service providers join to debate their visions of the future CSP, following a landmark presentation from AT&T on its massive virtualization efforts and a look back on where the telecom industry has been and where it's going from two industry veterans.
LRTV Custom TV
VeEX at ANGA COM

6|27|17   |     |   (0) comments


At ANGA COM 2017, Cyrille Morelle, president and CEO of VeEX, updates Alan Breznick with VeEX's new products and technology. This includes VeSion cloud-based platform for network monitoring, AT2500-3G advanced spectrum analyzer and MTTplus-900 WiFi Air Expert module. He also comments on DOCSIS 3.1 deployment and Remote PHY technology.
LRTV Custom TV
The Overall Objective Is to Win the Game

6|26|17   |     |   (0) comments


SCTE•ISBE's Chris Bastian discusses Energy 2020's success to date and the importance of a flexible approach that allows for changes in specific strategies in order to reach significant milestones.
LRTV Interviews
CenturyLink: Let's Get Past SD-WAN Hype

6|23|17   |   04:02   |   (0) comments


Technology becomes a "shiny object" unless it's properly focused on solving business needs for enterprise customers, says Bill Grubbs, network solutions architect for CenturyLink. He explains to Light Reading why SD-WAN deployments have to be tailored to specific needs – and more.
Women in Comms Introduction Videos
Infinera's Sales Director Paints Tech's Big Picture

6|21|17   |   4:14   |   (1) comment


Shannon Williams, Infinera's director of sales, shares how she achieves work's many balancing acts -- between her role and the broader company, today and tomorrow's tech and more.
LRTV Custom TV
SD-WAN Innovation & Trends

6|20|17   |     |   (0) comments


Versa CEO Kelly Ahuja discusses with Carol Wilson the current status and trends in the SD-WAN market, Versa's innovation around building a software platform with broad contextualization, and the advantages that startups can bring to the SD-WAN market.
LRTV Interviews
Ovum's Dario Talmesio on 5G in Europe

6|20|17   |   02:16   |   (0) comments


At 5G World 2017, Dario Talmesio, principal analyst and practice leader on Ovum's fixed and mobile telecoms European team, explains the emerging trends amongst European operators as they prepare for 5G.
LRTV Custom TV
Putting Power on a Pedestal

6|19|17   |     |   (0) comments


ARRIS's John Ulm says a major accomplishment of SCTE•ISBE's Energy 2020 program is increased focus on power cost and consumption, including inclusion of energy requirements in operators' RFPs and RFIs.
LRTV Custom TV
Gigabit Access: The Last-Mile Pipe for All Future Services

6|19|17   |     |   (0) comments


A Gigabit access platform being deployed today must be able to deliver all types of services to an increasing number of devices. A non-blocking architecture is necessary to support the ever-increasing growth in bandwidth demand. The Huawei Gigabit access solution is based on a distributed design that is fully scalable to deliver a unprecedented performance.
LRTV Custom TV
Key Factors to Successfully Deploy an SD-WAN Service

6|19|17   |     |   (0) comments


As service providers transition their SD-WAN solution from trials and limited deployments into production at large scale, there are important considerations to successfully operationalize these solutions and realize their full potential, without adding complexity, introducing uncertainty or disrupting current business operations. Sunil Khandekar, CEO and Founder ...
LRTV Custom TV
IoT Solutions: Rational Exuberance

6|19|17   |     |   (0) comments


IoT solutions are morphing from hype into viable business opportunities. Huawei has the platform and ecosystem support to help carriers successfully address new business opportunities in the IoT space.
LRTV Custom TV
Realizing ICN as a Network Slice for Mobile Data Distribution

6|19|17   |     |   (1) comment


Network slicing in 5G allows the potential introduction of new network architectures such as Information-centric Networks (ICN) as a slice, managed over a shared pool of compute, storage and bandwidth resource. Services over an ICN slice can benefit from many architectural features such as Name Based Networking, Security, Multicasting, Multi-homing, Mobility, ...
LRTV Interviews
Ovum's Mike Roberts on 5G Uptake

6|19|17   |   04:08   |   (0) comments


Mike Roberts, research director for Ovum's service provider markets group, explains why he has boosted his 5G subscriptions forecast.
Upcoming Live Events
October 18, 2017, Colorado Convention Center - Denver, CO
November 1, 2017, The Montcalm Marble Arch
November 1, 2017, The Montcalm Marble Arch
November 30, 2017, The Westin Times Square
All Upcoming Live Events
Infographics
With the mobile ecosystem becoming increasingly vulnerable to security threats, AdaptiveMobile has laid out some of the key considerations for the wireless community.
Hot Topics
No Imagination: UK Chip Biz Goes Up for Sale
Iain Morris, News Editor, 6/22/2017
Does AT&T Deserve Time Warner?
Mari Silbey, Senior Editor, Cable/Video, 6/23/2017
Netflix's Lesson in Culture Expectation Settings
Sarah Thomas, Director, Women in Comms, 6/21/2017
Kalanick Steps Down as Uber CEO
Sarah Thomas, Director, Women in Comms, 6/21/2017
Like Us on Facebook
Twitter Feed
BETWEEN THE CEOs - Executive Interviews
Following a recent board meeting, the New IP Agency (NIA) has a new strategy to help accelerate the adoption of NFV capabilities, explains the Agency's Founder and Secretary, Steve Saunders.
One of the nice bits of my job (other than the teeny tiny salary, obviously) is that I get to pick and choose who I interview for this slot on the Light Reading home ...
Animals with Phones
Live Digital Audio

Playing it safe can only get you so far. Sometimes the biggest bets have the biggest payouts, and that is true in your career as well. For this radio show, Caroline Chan, general manager of the 5G Infrastructure Division of the Network Platform Group at Intel, will share her own personal story of how she successfully took big bets to build a successful career, as well as offer advice on how you can do the same. We’ll cover everything from how to overcome fear and manage risk, how to be prepared for where technology is going in the future and how to structure your career in a way to ensure you keep progressing. Chan, a seasoned telecom veteran and effective risk taker herself, will also leave plenty of time to answer all your questions live on the air.