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
    Last week I dropped in on "Hotlanta," Georgia to moderate Light Reading's inaugural DroneComm conference – a unique colloquium investigating the potential for drone communications to disrupt the world's telecom ecosystem. As you will see, it was a day of exploration and epiphany...
    Between the CEOs
    Affirmed Networks CEO: Digging Into NFV

    5|28|15   |   40:26   |   (2) comments


    Hassan Ahmed, CEO of Affirmed Networks, is making some big claims for his NFV startup. I sat down with him at the Light Reading HQ in New York City to get the skinny on what this Acton, Mass.-based startup is up to.
    LRTV Documentaries
    Cable Eyeing SDN for Headend, Home Uses

    5|26|15   |   05:57   |   (1) comment


    CableLabs is looking at virtualizing CMTS and CCAP devices in the headend, as well as in-home devices, says CableLabs' Karthik Sundaresan.
    LRTV Documentaries
    Verizon's Emmons: SDN Key to Cost-Effective Scaling

    5|22|15   |   03:53   |   (0) comments


    For Verizon and other network operators to ramp up available bandwidth cost effectively, they need to move to SDN and agree on how to do that.
    LRTV Documentaries
    Lack of Universal SDN a Challenge

    5|21|15   |   04:51   |   (3) comments


    Heavy Reading Analyst Sterling Perrin talks about how uncertainty about SDN standards and approaches may be slowing deployment.
    LRTV Custom TV
    Steve Vogelsang Interview: Carrier SDN

    5|20|15   |   05:02   |   (0) comments


    Sterling Perrin speaks to Steve Vogelsang, Alcatel-Lucent CTO for IP Routing & Transport business, about the new Carrier SDN-enabling Network Services Platform and the operator challenges it solves.
    LRTV Custom TV
    Carrier SDN: On-Demand Networks for an On-Demand World

    5|20|15   |   20:52   |   (0) comments


    Steve Vogelsang, Alcatel-Lucent CTO for IP Routing & Transport business, talks about requirements and benefits of Carrier SDN during the keynote address at the Light Reading Carrier SDN event May 2015.
    LRTV Documentaries
    The Security Challenge of SDN

    5|19|15   |   02:52   |   (0) comments


    CenturyLink VP James Feger discusses concerns that virtualization could create new vulnerabilities unless network operators build in safeguards.
    LRTV Custom TV
    NFV Elasticity – Highly Available VNF Scale-Out Architectures for the Mobile Edge

    5|18|15   |   5:50   |   (0) comments


    Peter Marek and Paul Stevens from Advantech Networks and Communications Group talk about their NFV Elasticity initiative and the company's latest platforms for deploying virtual network functions at the edge of the network. Packetarium XL and the new Versatile Server Module: 'designed to reach parts of the network that other servers cannot reach.'
    LRTV Huawei Video Resource Center
    Bay Area Spark Meetup 2015

    5|14|15   |   3:54   |   (0) comments


    Developed in 2009, Apache Spark is a powerful open source processing engine built around speed, ease of use and sophisticated analytics. This spring, Huawei hosted a meetup for Spark developers and data scientists in Santa Clara, California. Light Reading spoke with organizers and attendees about Huawei's code contributions and long-term commitment to Spark.
    LRTV Custom TV
    The Transport SDN Buzz

    5|12|15   |   06:01   |   (1) comment


    Sterling Perrin, senior analyst at Heavy Reading, speaks with Peter Ashwood-Smith of Huawei and Guru Parulkar of ON.Lab about the evolution of transport SDN and the integration of technologies.
    LRTV Custom TV
    Next-Generation CCAP: Cisco cBR-8 Evolved CCAP

    5|5|15   |   04:49   |   (0) comments


    John Chapman, Cisco's CTO of Cable Access Business Unit and Cisco Fellow, explained the innovation design of Cisco's cBR-8, the industry's first Evolved CCAP, including DOCSIS 3.1 design from ground-up, distributed CCAP with Remote PHY and path to virtualization. Cisco's cBR-8 Evolved CCAP is the platform that will last through the transitions.
    LRTV Custom TV
    Meeting the Demands of Bandwidth & Service Group Growth

    5|1|15   |   5:35   |   (0) comments


    Jorge Salinger, Comcast's Vice President of Access Architecture, explains how DOCSIS 3.1 and multi-service CCAP can meet the demands of the bandwidth and service group growth.
    Upcoming Live Events
    June 8, 2015, Chicago, IL
    June 9, 2015, Chicago, IL
    June 9-10, 2015, Chicago, IL
    June 10, 2015, Chicago, IL
    September 29-30, 2015, The Westin Grand Müchen, Munich, Germany
    October 6, 2015, The Westin Peachtree Plaza, Atlanta, GA
    October 6, 2015, Westin Peachtree Plaza, Atlanta, GA
    All Upcoming Live Events
    Infographics
    Procera has gathered facts, stats and customer experience feedback from a survey of 540 users from across the globe.
    Hot Topics
    Charter Seals Deals for TWC, Bright House
    Mari Silbey, Senior Editor, Cable/Video, 5/26/2015
    Eurobites: Alcatel-Lucent Trials 400G in Czech Republic
    Paul Rainford, Assistant Editor, Europe, 5/26/2015
    Will Carriers Follow Facebook's Networking Lead?
    Mitch Wagner, West Coast Bureau Chief, Light Reading, 5/28/2015
    Charter Plans Business Services, Wireless Push
    Alan Breznick, Cable/Video Practice Leader, 5/27/2015
    Facebook Reinvents Data Center Networking
    Mitch Wagner, West Coast Bureau Chief, Light Reading, 5/26/2015
    Like Us on Facebook
    Twitter Feed
    BETWEEN THE CEOs - Executive Interviews
    On May 29th 1 PM ET, Steve Saunders, founder and CEO of Light Reading, will be drilling into the "pains and gains" of NFV with Saar Gillai, SVP & GM for NFV at Hewlett-Packard Co. (NYSE: HPQ) (HP). He has defined a four-step NFV model describing a sequence of technology innovation. It's a must-read doc for any network architect looking to get to grips with their NFV migration strategy. Join us for the interview, and the chance to ask Saar your NFV questions directly!
    Hassan Ahmed, CEO of Affirmed Networks, is making some big claims for his NFV startup. I sat down with him at the Light Reading HQ in New York City to get the skinny on what this Acton, Mass.-based startup is up to.
    Cats with Phones