Broadcom Joins China's Cable Gold Rush

China's cable broadband market is getting ready to explode, and Broadcom Corp. (Nasdaq: BRCM) is one of the companies hoping to provide a spark using a new flavor of Docsis that has been tailored -- from a technology and cost perspective -- for the nation's MSOs.

C-Docsis, as it's called, is one of three access technologies selected earlier this year by the State Administration of Radio, Film and Television (SARFT) as an acceptable cable access standard for a next-generation broadband (NGB) project that will help the country's cable operators overhaul their plant for triple-play services and arm them to compete against China's powerful telcos, such as China Telecom Corp. Ltd. (NYSE: CHA), China Unicom Ltd. (NYSE: CHU) and China Mobile Ltd. (NYSE: CHL) (See Broadcom Helps Tweak Docsis for China.)

China's NGB initiative is expected to produce nearly 200 billion yuan (US$32 billion) in infrastructure investment over the next five years, according to BDA Research. It's also expected to help pave the way for some consolidation and organization of China's 2,000-plus cable MSOs, many of which are run by municipalities, with many currently offering only basic video services for a few dollars a month over antiquated plant.

SARFT, essentially the Federal Communications Commission (FCC) of China, has standardized on two other Ethernet-over-coax (EoC) technologies for NGB: HiNOC, a baseband technology that may ultimately merge with Multimedia over Coax Alliance (MoCA) , and a modified version of HomePlug A/V. SARFT is expected to let those three technologies duke it out for market dominance. (Light Reading Cable will discuss the other cable NGB options for China in a future story.)

As C-Docsis goes, Broadcom is in the pole position, as it is (so far) the sole supplier of silicon for the necessary network-side gear.

What is C-Docsis?
A key goal of C-Docsis is to make Docsis technology cost-competitive in markets that teem with high-density apartments and other multiple-dwelling units (MDUs). Many Chinese cable systems are considered "fiber deep" because they run PON to the MDU before handing things over to the building's coax network that, in turns, transports services to the individual residences. Traditional Docsis cable modem termination systems (CMTSs) aren't cost-competitive in those environments because they are made to serve tens of thousands of customers, rather than just a couple hundred.

C-Docsis enables any Docsis 2.0- or Docsis 3.0-certified cable modem or set-top with an integrated Docsis Set-Top Gateway (DSG) to interoperate with what's essentially a stripped-down cable modem termination system (CMTS), explains Ernie Bahm, senior director of marketing for Broadcom's Broadband Communications Group. But in C-Docsis parlance, this component is called the Coax Media Converter (CMC).

The CMC functions like a CMTS but does not support the core routing functions. The CMC receives the the PON protocol or point-to-point Ethernet signal and turns it into Docsis packets that can be sent along the coax to the cable modems.

"It's the same technology, but uses a different architecture," Bahm says.

  • Page 2: Big market opportunity

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    paolo.franzoi 12/5/2012 | 5:17:44 PM
    re: Broadcom Joins China's Cable Gold Rush

    This is not the China only standard.  And many Europeans viewed the T carrier hierarchy as a similar issue.



    Pete Baldwin 12/5/2012 | 5:17:44 PM
    re: Broadcom Joins China's Cable Gold Rush

    China needs their own Docsis. Why, of course they do.

    Jeff Baumgartner 12/5/2012 | 5:17:43 PM
    re: Broadcom Joins China's Cable Gold Rush

    Well, it certainly could be used in other markets or address the MDU issue... not sure if there's much of a play in N. America, but agree that it could be interesting in some areas of Europe.  The good news about this is that C-Docsis can apparently use regular Docsis modems, so at least it has access to commdity CPE. JB

    jordan1968 12/5/2012 | 5:17:41 PM
    re: Broadcom Joins China's Cable Gold Rush

    agree that c-docsis will benefit cable modem biz to some extent, actually the situation in china is that most of the msos has chosen epon+eoc solution to reach households since last year, i don't think the c-docsis market will boost in china as the time window of access deployment only has 2 years left, the later c-docsis release the smaller market space. 

    jordan1968 12/5/2012 | 5:17:33 PM
    re: Broadcom Joins China's Cable Gold Rush The number of cable modem used in China should be around 10 million, most of them are embedded in STB as a module enabling uplink, customers access broadband through cable modem are small numbers, may less 2 million. the main reason why MSO chose EoC is about the cost, as you know, there are 200 million analog CATV users will shift to two-way users.
    AESerm 12/5/2012 | 5:17:33 PM
    re: Broadcom Joins China's Cable Gold Rush

    If there are only 4m DOCSIS modems in China, then cable is way behind the curve. Point Topic has China with 167m b'band subs. Of course, it's a big country. More growth ahead. But EOC is what I've also heard is the buzz. (BTW: Is the legal team at C'Labs OK with the C-DOCSIS tag?)

    Jeff Baumgartner 12/5/2012 | 5:17:28 PM
    re: Broadcom Joins China's Cable Gold Rush

    Yeah, cable broadband in China is way behind the curve, which is whey the country is pursuing this to establish more competition.  Hmmmm...good question about C-Docsis...i'll have to see if the term has (or even needs) the Cablelabs blessing. JB


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