Light Reading

Alcatel-Lucent Claims Copper Speed Record

Light Reading
News Wire Feed
Light Reading
7/9/2014
50%
50%

PARIS -- Bell Labs, the research arm of Alcatel-Lucent (Euronext Paris and NYSE: ALU), has set a new broadband speed record of 10 gigabits-per-second (Gbps) using traditional copper telephone lines and a prototype technology that demonstrates how existing copper access networks can be used to deliver 1Gbps symmetrical ultra-broadband access services.

Achieving 1 Gbps 'symmetrical' services – where bandwidth can be split to provide simultaneous upload and download speeds of 1 Gbps – is a major breakthrough for copper broadband. It will enable operators to provide Internet connection speeds that are indistinguishable from fiber-to-the-home services, a major business benefit in locations where it is not physically, economically or aesthetically viable to lay new fiber cables all the way into residences. Instead, fiber can be brought to the curbside, wall or basement of a building and the existing copper network used for the final few meters.

The Bell Labs tests used a prototype technology called XG-FAST. This is an extension of G.fast technology, a new broadband standard currently being finalized by the ITU. When it becomes commercially available in 2015, G.fast will use a frequency range for data transmission of 106 MHz, giving broadband speeds up to 500 Mbps over a distance of 100 meters. In contrast, XG-FAST uses an increased frequency range up to 500 MHz to achieve higher speeds but over shorter distances. Bell Labs achieved 1 Gbps symmetrical over 70 meters on a single copper pair. 10 Gbps was achieved over a distance of 30 meters by using two pairs of lines (a technique known as “bonding”). Both tests used standard copper cable provided by a European operator.

Marcus Weldon, President of Bell Labs: “Our constant aim is to push the limits of what is possible to ‘invent the future’, with breakthroughs that are 10 times better than are possible today. Our demonstration of 10 Gbps over copper is a prime example: by pushing broadband technology to its limits, operators can determine how they could deliver gigabit services over their existing networks, ensuring the availability of ultra-broadband access as widely and as economically as possible.”

Commenting on the achievement, Federico Guillén, President of Alcatel-Lucent’s Fixed Networks business said: “The Bell Labs speed record is an amazing achievement, but crucially in addition they have identified a new benchmark for ‘real-world’ applications for ultra-broadband fixed access. XG-FAST can help operators accelerate FTTH deployments, taking fiber very close to customers without the major expense and delays associated with entering every home. By making 1 gigabit symmetrical services over copper a real possibility, Bell Labs is offering the telecommunications industry a new way to ensure no customer is left behind when it comes to ultra-broadband access.”

Technical background information
The primary factors influencing broadband speeds over copper are:

  • Distance: the longer the copper connection between the access node and the customer’s telephone socket, the slower the broadband speed. This is dictated by attenuation.
  • Frequency: the wider the frequency range, the faster the broadband speed that can be achieved. The Shannon Limit dictates the maximum possible speed for a given medium and frequency spectrum.
  • Higher frequencies attenuate more quickly than lower frequencies, meaning there are diminishing returns in speed as the frequency range increases.

    During testing, Bell Labs showed that XG-FAST technology can deliver 1 Gbps symmetrical services over 70 meters (for the cable being tested). This was achieved using a frequency range of 350 MHz. Signals at higher frequencies were completely attenuated after 70 meters.

    In practical situations, other significant factors that can influence actual speeds (not taken into account during these tests but which have been studied extensively elsewhere) include the quality and thickness of the copper cable and cross-talk between adjacent cables (which can be removed by vectoring).

    Alcatel-Lucent (NYSE: ALU)

    (1)  | 
    Comment  | 
    Print  | 
  • Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
    rradina
    50%
    50%
    rradina,
    User Rank: Light Beer
    7/9/2014 | 9:53:31 AM
    Wireless Anyone?
    At such short distances, couldn't low density suburban settings use some form of WiFi?  I'd really prefer the cable company use WiFi from the pedestal instead of incurring the cost of replacing the line everytime someone complains about problems with their service.  Trying to transmit 500mhz over UTP would seem just inviting lots of new runs from the curb just like the cable companies do with their coax.
    Flash Poll
    From The Founder
    Anshul Sadana answers questions from Steve Saunders, Light Reading's founder and CEO, about Arista's CloudVision, a global cloud network controller for workload orchestration and workflow automation delivering a turnkey solution for cloud networking.
    Live Streaming Video
    CLOUD / MANAGED SERVICES: Prepping Ethernet for the Cloud
    Moderator: Ray LeMaistre Panelists: Jeremy Bye, Leonard Sheahan
    LRTV Custom TV
    End-User or Enterprise Benefits to the New IP

    7|30|15   |   04:27   |   (0) comments


    Andrew Coward discusses what the New IP means to end users or enterprise customers. He explains compelling reasons, including how every customer can get their own network, from the transformation to the New IP.
    LRTV Custom TV
    Network Visibility & the New IP

    7|30|15   |   02:23   |   (0) comments


    Mukund Srigopal provides an explanation of what network visibility is and how it is essential as service providers transition to the New IP. In addition, the importance of the network packet broker is discussed.
    Between the CEOs
    Video Exclusive With Basil Alwan, Alcatel-Lucent

    7|24|15   |   26:44   |   (5) comments


    Basil Alwan, President of IP Routing & Transport at Alcatel-Lucent, discusses virtualization, cultural challenges, the capex crunch and more with Light Reading founder and CEO Steve Saunders.
    LRTV Custom TV
    VDF: Enable the Financial With Mobile Money

    7|20|15   |   06:53   |   (0) comments


    Ian Ravenscroft discusses how operators can expand to occupy the entire digital services value chain through service innovation.
    LRTV Custom TV
    Telefónica on OSS Transformation

    7|20|15   |   06:01   |   (0) comments


    Jose Gonzales discusses the details of Telefónica's operation transformation program.
    LRTV Custom TV
    Judi Achmadi on Huawei's Cloud Storage Solution

    7|20|15   |   03:33   |   (0) comments


    Judi discusses the key business goals of TelekomSigma's public cloud service and how Huawei's solution helps them address challenges.
    LRTV Custom TV
    KPN Enlightening Digital Business & IT Transformation

    7|20|15   |   06:19   |   (0) comments


    Rob de Beer discusses the changes that operators need to make with service innovation now coming from the Internet world.
    LRTV Custom TV
    Stratus Telco-Grade Cloud Solutions & NFV

    7|20|15   |   07:34   |   (0) comments


    Ali Kafel from Stratus Technologies addresses high-availability concerns within the telco industry with a solution that enables telcos to provide high-availability and stateful fault-tolerance using a software-based approach.
    LRTV Documentaries
    The Six Million Dollar Business Man

    7|20|15   |   01:52   |   (0) comments


    Steve Saunders, publisher. A man barely alive after an acquisition malfunction imploded the company he founded. Gentlemen, we can rebuild Light Reading. Better, faster, stronger.
    Between the CEOs
    CEO Chat With Anukool Lakhina, Guavus

    7|20|15   |   38:51   |   (1) comment


    Guavus CEO Anukool Lakhina talks to Light Reading founder and CEO Steve Saunders about the role of operational analytics in the communications services and networking sectors, particularly in relation to IoT.
    LRTV Custom TV
    IBM's Flash Storage With Intel QuickAssist

    7|20|15   |   03:18   |   (0) comments


    Intel's Bev Crair and IBM's Eric Herzog discuss how IBM's V9000 Flash Storage System has helped customers around the world. Featuring real-time compression powered by Intel QuickAssist Technology, the V9000 is a next-gen flash storage solution.
    LRTV Huawei Video Resource Center
    Thailand's AIS: Transforming to an FMC Operator

    7|17|15   |   4:53   |   (0) comments


    Saran Phaloprakarn, Senior VP of Fixed Broadband Business Management of Thailand's AIS, was a keynote speaker at the first Asia-Pacific Ultra Broadband Summit in Bangkok. In this video, he talks to Heavy Reading about transforming into an FMC (FBB+MBB+Content) operator.
    Upcoming Live Events
    September 16-17, 2015, The Westin Galleria Dallas, Dallas, TX
    September 16, 2015, The Westin Galleria Dallas, Dallas, TX
    September 16, 2015, The Westin Galleria Dallas, Dallas, TX
    September 29-30, 2015, The Westin Grand Müchen, Munich, Germany
    October 14-15, 2015, New Orleans Ernest N. Morial Convention Center, New Orleans, LA
    November 5, 2015, Hilton Santa Clara, Santa Clara, CA
    December 1, 2015, The Westin Times Square, New York City
    All Upcoming Live Events
    Infographics
    Network operators start seeing savings from NFV in the first year, according to a study by Affirmed Networks and ACG.
    Hot Topics
    AT&T U-verse TV Hits the Skids
    Alan Breznick, Cable/Video Practice Leader, 7/24/2015
    Robbins Succeeds Chambers as Cisco Changes CEOs
    Mitch Wagner, West Coast Bureau Chief, Light Reading, 7/27/2015
    RJio to Launch Its Own 4G Devices Brand
    Gagandeep Kaur, Contributing Editor, 7/27/2015
    Qualcomm Wants FCC to Stay Out of LTE-U Fray
    Sarah Thomas, Editorial Operations Director, 7/27/2015
    Like Us on Facebook
    Twitter Feed
    September 22, 2015
    Media Begins With “Me”
    Webinar Archive
    BETWEEN THE CEOs - Executive Interviews
    Basil Alwan, President of IP Routing & Transport at Alcatel-Lucent, discusses virtualization, cultural challenges, the capex crunch and more with Light Reading founder and CEO Steve Saunders.
    Guavus CEO Anukool Lakhina talks to Light Reading founder and CEO Steve Saunders about the role of operational analytics in the communications services and networking sectors, particularly in relation to IoT.
    Cats with Phones
    Distract-a-Cat Click Here
    The vibrate function makes for a useful cat distraction.