Light Reading

Will Broadcom Go for More Than 1-Gig?

Jeff Baumgartner
The Bauminator
Jeff Baumgartner
1/8/2013
50%
50%
Repost This

11:00 AM -- As Broadcom Corp. worked on its next-gen Docsis 3.0 chipsets last summer, the chatter was that the company would try to leapfrog Intel Corp.'s Puma6 with silicon that could bond 32 downstream channels -- enough to push out max speeds of 1.2 Gbit/s. That didn't happen. On Tuesday, Broadcom came out with two chipsets that mirror the capabilities of the Puma6 -- a high-end version that can bond 24 downstream channels and 8 upstreams, and one with a 16x4 configuration that can snap into Broadcom's widely deployed 8x4 D3 modem hardware designs. (See Broadcom Matches Intel With 1-Gig D3 Chipset.) Of course, much has changed since last summer. The cable industry's Docsis 3.1 spec is pursuing faster speeds while doing away with the old 6MHz (North American Docsis) and 8MHz (EuroDocsis) channel spacing. Instead, Docsis 3.1 will favor the use of super-wide channels made up of small orthogonal frequency division multiplexing (OFDM) subcarriers. (See Docsis 3.1 Targets 10-Gig Downstream.) The emergence of Docsis 3.1 could have contributed to Broadcom's decision, or perhaps the market told Broadcom that it didn't need 32-channel bonding capabilities just yet. But when it comes to a Docsis 3.0 chipset that goes beyond 24 downstreams, well, never say never. "I wouldn’t rule out 32 [downstream channels] as the next step," says Jay Kirchoff, VP of marketing for Broadcom's cable broadband unit. "We're clearly looking at other things and the newest specs that are being developed." [Ed. note: several cable modem termination system (CMTS) vendors are working on software that enables the bonding of 32 downstream channels.] He says Broadcom's Full-Band Capture (FBC) technology would certainly pave the way for the bonding of 32 channels. Rather than having to pluck channels out of a 100MHz-block, FBC lets operators grab and bond channels from anywhere on the spectrum, up to 1GHz. "We don't have to add more tuners if we want more channels to bond. It's extremely scalable, should be want to go to 32 and even beyond in future generations of product," Kirchoff said. So, 24 channels and about 1 Gbit/s is the current Docsis 3.0 downstream speed limit. But to go beyond it, Broadcom suggests all it has to do is press down a little harder on the gas pedal. — Jeff Baumgartner, Site Editor, Light Reading Cable

(2)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View
Moe Sukhon
50%
50%
Moe Sukhon,
User Rank: Light Beer
5/15/2013 | 6:27:26 PM
re: Will Broadcom Go for More Than 1-Gig?
Will deploying these 24/32 channel bonded tuners change the specs on the upstream amplifier found in an STB? or change the requirements on the headend/CMTS discrete amplifiers?
Jeff Baumgartner
50%
50%
Jeff Baumgartner,
User Rank: Light Beer
1/8/2013 | 5:40:46 PM
re: Will Broadcom Go for More Than 1-Gig?
Of course,-á supporting 32 channels and actually using them are two different things... still hearing that some operators have trouble finding 8 channels for the widely deployed 8x4 modems.-á But suppose the 24 and a potential 32-channel set-up gives some good future proofing while D3.1 gets going. JB
More Blogs from The Bauminator
Don't expect anything more to pop for a while, but one analyst sees John Malone & Co. as the 'logical, ultimate acquirer of Ziggo' if the price is right
Cable operators will need to free up at least 24MHz of spectrum for Docsis 3.1. But why is that the magic number?
Liberty Media's rumored plan to snag a 25% stake in Charter for $2.5B could aid the MSO's M&A strategy
Top US cable operators lost 1.41 million video subs in 2012, but the bleeding continues to show signs of slowing in a saturated pay-TV market
Aereo streams its 'no cable required' tagline into the video world. Will consumers tune in to the message?
Flash Poll
LRTV Documentaries
Cable Eyes Big Technology Shifts

4|16|14   |   03:02   |   (4) comments


US cable engineers are facing a lot of heavy lifting in the coming years, notes Light Reading Cable/Video Practice Leader Alan Breznick.
LRTV Custom TV
Maximizing Customer Experience & Assuring Service Delivery in an IP World

4|15|14   |   4:57   |   (0) comments


Steven Shalita, VP of Marketing, NetScout Systems, Inc., discusses the challenges cable/MSO operators face in assuring the delivery of new IP-based services. Key points include the value of proactively managing performance, and using rich analytics and operational intelligence to better understand service and usage trends, make smarter business decisions and ...
LRTV Documentaries
Bye-Bye DVD: Consumers Embrace Digital Video

4|10|14   |   04:17   |   (7) comments


Veteran video analyst Colin Dixon, founder and principal analyst of nScreenMedia, says research shows 56% are using digital video already.
LRTV Documentaries
Video: TW Cable Puts Multicast Gateways to the Test

4|8|14   |   04:13   |   (1) comment


Tom Gonder, a chief architect at Time Warner Cable, explains how its trial of multicast gateways is impacting IP-based video plans.
LRTV Custom TV
Managing & Monetizing Big Data in Operator Environments

4|7|14   |     |   (1) comment


At Mobile World Congress, Gigamon's Director of Service Provider Solutions, Andy Huckridge, and Heavy Reading Analyst Sarah Wallace discuss the 'big data' issues facing carriers and operators today.
LRTV Huawei Video Resource Center
Data Center Energy – Build Your Data Center in a Modular Way

4|7|14   |   2:13   |   (0) comments


Dr. Fang Liangzhou, VP Network Energy Product Line, shared his thoughts about the challenges for data centers during CeBIT 2014.
LRTV Huawei Video Resource Center
Agile Network Solution – An Overview of Huawei's Agile Network Solution

4|7|14   |   2:31   |   (0) comments


Ajay Gupta, Director of Product Marketing, Networking Product Line, gives an overview of the Agile Network Solutions during CeBIT 2014.
LRTV Huawei Video Resource Center
Huawei’s eLTE Voice Trunking, Video and Data Applied for Railways

4|7|14   |   1:38   |   (0) comments


Gottfried Winter is the Sales Director at Funkwerk, a German specialist in GSM-r terminals and a long-time partner of Huawei. At CeBIT 2014, Winter talks to Light Reading about this partnership and the integration of enhanced voice trunking, video and data functions.
LRTV Huawei Video Resource Center
LeaseWeb Speaks Highly of Huawei's Datacenter Products

4|7|14   |   1:37   |   (0) comments


Rene Olde Olthof, Operations Director LeaseWeb, talks about the next data center transformation during CeBIT 2014.
LRTV Documentaries
Comcast: Reshaping the Cable Network Architecture

4|3|14   |   07:11   |   (8) comments


Shamim Akhtar, Comcast's architect and senior director of network strategy, explains why the cable company is moving to a more distributed network architecture.
LRTV Custom TV
VMware CEO Pat Gelsinger at Mobile World Congress

4|1|14   |   3:41   |   (0) comments


VMware CEO Pat Gelsinger speaks to Heavy Reading about the value of virtualization spanning from the data center to service provider networks to mobile devices.
LRTV Huawei Video Resource Center
Analysts' Impressions of Huawei SoftCOM at ONS 2014

4|1|14   |   1:11   |   (0) comments


After visiting the Huawei booth at ONS, Lee Doyle of Doyle Research gives his appraisal of Huawei's SoftCOM solution.
Hot Topics
BlackBerry Invests in Healthcare IT Startup
Sarah Reedy, Senior Editor, 4/15/2014
Volvo: AT&T HSPA+ Can Drive My Car
Sarah Reedy, Senior Editor, 4/16/2014
T-Mobile Petitions Operators to Kill Overages
Sarah Reedy, Senior Editor, 4/14/2014
Mobile Apps Susceptible to Heartbleed, Too
Sarah Reedy, Senior Editor, 4/14/2014
Report: NFV/SDN Standards 'Myopic' on Service Management
Carol Wilson, Editor-at-large, 4/16/2014
Like Us on Facebook
Twitter Feed