blind_html [Fwd: Cable Upload Speeds To Get Cranking]

  • From: Nimer <nimerjaber1@xxxxxxxxx>
  • To: blind_html@xxxxxxxxxxxxx
  • Date: Thu, 09 Apr 2009 09:16:36 -0600

-------- Original Message --------
Subject:        Cable Upload Speeds To Get Cranking
Date:   Thu, 9 Apr 2009 01:47:59 -0000
From:   Ray T. Mahorney <coffee-craver@xxxxxxxxxxxxxx>
Reply-To:       Blind-chit-chat@xxxxxxxxxxxxxxx
To:     <blind-chit-chat@xxxxxxxxxxxxxxx>

Cable Upload Speeds To Get Cranking
Equipment Vendors Working to Boost Upstream Data Capacity

By Todd Spangler
Multichannel News

April 7, 2009

The neglected upstream side of cable's two-way broadband street is now
getting some love.

With the initial launch of next-generation DOCSIS 3.0 services, the
industry has focused on super-charging the downstream speeds of
broadband services. Comcast, for example, offers top download speeds of
50 Mbps but upload speeds max out at 10 Mbps.

Now, cable-technology vendors are working to power up the upstream.

At Cable Show '09 last week, Arris was showing its C4 cable-modem
termination system delivering four upstream channels bonded together, to
deliver a sustained throughput of between 100 and 106 Mbps.

Over the next five years, "we're going to be challenged mostly by having
to provide a lot of bandwidth, and the upstream in particular is an area
we need to focus on," Arris chief strategy officer Tom Cloonan said on a
panel during the Society of Cable & Telecommunications Engineers'
Conference on Emerging Technologies at the show.

For its part, Motorola is developing a high-density module for its BSR
64000 integrated cable modem termination system that would provide 48
ports of upstream capacity - dramatically increasing the upload speeds
possible through DOCSIS 3.0 technology.

Motorola's currently shipping TX32 downstream module supports 32 QAM
channels in a single slot in the CMTS, to deliver DOCSIS 3.0
channel-bonded services of up to 200 Mbps downstream. The RX48 module,
targeted to be available by mid-2010, would provide 48 upstream ports
per chassis slot.

"We're going to have the card and the technology when the market's ready
for it," said Floyd Wagoner, director of global marketing and
communications for Motorola's Access Networks Business.

DOCSIS 3.0 vendors are using synchronous code division multiple access
(S-CDMA) technology to reduce noise in the spectrum below 20 MHz for
upstream channels.

"If the battle on upstream is ‘I need more,' it's important to clean up
the spectrum so you can reach below 20 MHz," Wagoner said. "It's a more
thoughtful approach than just throwing hardware at it."

Meanwhile, the team behind now-defunct spectrum-expansion company Vyyo
is getting ready to relaunch with a new company name -- Javelin
Innovations -- and a strategy to deliver MSOs an additional 500 MHz of
upstream capacity.

While Vyyo was pitching a system that would expand a cable plant's
capacity to 3 GHz, Javelin is specifically targeting upstream bandwidth,
CEO Wayne Davis said.

In addition, the new company plans to license the technology to other
tap and amplifier vendors, which would integrate it into their own
products, rather than sell products directly to MSOs as Vyyo was
attempting to do.

According to Davis, the company's new approach won't require any changes
on the customer-premises side and only simple upgrades to taps. But the
Javelin approach will preserve the upstream 5-42 MHz frequency range, by
"stacking" multiple legs of the upstream spectrum in space above 1 GHz.

"This will be the biggest innovation in the HFC space in decades," Davis
said in an interview at the Cable Show '09 this month. "Node splits will
be a thing of the past."

Node splits are a technique MSOs use to increase the amount of bandwidth
to a service area, by reducing the number of homes per fiber-optic cable.

Javelin is based in Atlanta with offices in Englewood, Colo. Vyyo hired
Davis, a former chief technology officer of Charter Communications, as
CEO in March 2007.

Last October, Vyyo was taken private by an investment consortium led by
the company's former chairman and CEO, Davidi Gilo, in a deal worth $45
million. Goldman Sachs is also an investor in Javelin.


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