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
    Network architects aiming to upgrade their networks to support agile, open, virtualized services in the 21st century need to consider new criteria when choosing between technology suppliers.
    Live Streaming Video
    BTE 2015 Sponsor Keynote: HP
    Dr. Prodip Sen, CTO, Network Functions Virtualization, HP
    LRTV Documentaries
    IoT in Action

    6|30|15   |   1:39   |   (5) comments


    Two co-workers discuss the benefits of IoT technology.
    LRTV Interviews
    Ericsson Opens Up on OPNFV

    6|30|15   |   14:16   |   (0) comments


    Martin Bäckström, VP and head of industry area Datacom at Ericsson, talks to Light Reading founder and CEO Steve Saunders about the emergence of OPNFV, the importance of standards and Ericsson's OPNFV plans.
    LRTV Custom TV
    NetNumber Founder Discusses NFV/SDN Impact on SP Networks

    6|26|15   |   4:15   |   (0) comments


    NetNumber Founder Doug Ranalli examines why SPs need a new network infrastructure for service agility. While NFV and SDN are the tools, the old ways of thinking about signaling control are inhibitors. Doug provides his recommendations.
    LRTV Custom TV
    Orchestrating NFV vCPE Services Across Multivendor Networks

    6|26|15   |   5:46   |   (0) comments


    Nirav Modi provides an overview of vCPE, the fastest-growing NFV use case, showing how Cyan's Blue Planet orchestrates vCPE services across a multivendor infrastructure to rapidly deliver new managed services for business customers.
    LRTV Custom TV
    ZTE at LTE Summit Amsterdam 2015

    6|26|15   |     |   (0) comments


    As one of the leading global telecommunications providers, ZTE presented its cutting-edge technology at LTE World Summit 2015 in Amsterdam. On display at ZTE's booth were the latest R&D achievements in wireless, 5G development, HetNet, deep convergence of FDD and TDD, and RCS/IMD/iSDN/vCN.
    LRTV Documentaries
    OPNFV Director Opens Up on Women in Tech

    6|25|15   |   3:25   |   (0) comments


    Heather Kirksey, the director of the OPNFV, gets real about the gender disparity in open source and standards and discusses how we can change both the conversation and the gender dynamics.
    LRTV Custom TV
    Symantec's Service Provider Security Strategy

    6|24|15   |   7:06   |   (0) comments


    Didi Dayton explores Symantec's emerging enterprise security strategies for service providers. Highlights include 'killing the password,' self-defense, advanced analytics and adaptive response in a service provider architecture.
    Between the CEOs
    Debating Network Evolution With Cisco's Cedrik Neike

    6|23|15   |   12:54   |   (2) comments


    Cedrik Neike, SVP of Global Service Provider, Service Delivery, at Cisco, talks to Light Reading founder and CEO Steve Saunders about solving service provider customer problems in a virtualized, DevOps world, including multivendor support and the future of network procurement.
    LRTV Documentaries
    Vodafone: What's Good for Moms Is Good for Business

    6|23|15   |   3:04   |   (3) comments


    Megan Doberneck, the general counsel for Vodafone Americas, discusses her company's progressive maternity policy, explains why promoting women in tech is good business and offers some some good advice for any women in the industry.
    LRTV Interviews
    NFV: Ready for Prime Time

    6|23|15   |   05:09   |   (1) comment


    At BTE 2015, Vip mobile CTO Dejan Kastelic talks about how NFV is ready for the real world and how Telekom Austria is introducing centralized resources for its group operations.
    LRTV Documentaries
    Tykes Talk Tech

    6|22|15   |   02:30   |   (9) comments


    What does optical fiber look like? When will 5G arrive? What's the WiFi password at Ikea? Light Reading sat down with three 8-year-olds to answer some of the communications industry's most burning questions...
    LRTV Huawei Video Resource Center
    Huawei Partners With TDC for World's First Early DOCSIS 3.1 Field Test

    6|22|15   |   3:06   |   (0) comments


    In a move to enhance user experience, Denmark's TDC aims to become an early adopter of DOCSIS 3.1. In partnership with Huawei, TDC recently ran the world's first field tests on its coax network that reached speeds nearing 1 Gbit/s.
    Upcoming Live Events
    September 16-17, 2015, The Westin Galleria Dallas, Dallas, TX
    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
    October 14-15, 2015, New Orleans Ernest N. Morial Convention Center, New Orleans, LA
    All Upcoming Live Events
    Infographics
    Hot Topics
    Staying Productive With My Office-in-a-Bag
    Mitch Wagner, West Coast Bureau Chief, Light Reading, 6/25/2015
    Who's Feeding Fiber to LinkNYC Hotspots?
    Mari Silbey, Senior Editor, Cable/Video, 6/29/2015
    What's in Your Office-in-a-Bag?
    Mitch Wagner, West Coast Bureau Chief, Light Reading, 6/26/2015
    Eurobites: Activist Investor Takes Stake in AlcaLu
    Paul Rainford, Assistant Editor, Europe, 6/30/2015
    Like Us on Facebook
    Twitter Feed
    Webinar Archive
    BETWEEN THE CEOs - Executive Interviews
    Casa Systems has been going from strength to strength over the last couple of years. In 2013, it became the first vendor to ship an integrated CCAP device -- the ...
    Cedrik Neike, SVP of Global Service Provider, Service Delivery, at Cisco, talks to Light Reading founder and CEO Steve Saunders about solving service provider customer problems in a virtualized, DevOps world, including multivendor support and the future of network procurement.
    Cats with Phones