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gfast map nov

Dark Green: Firm commitments from incumbent: BT (10M), Belgacom, Australian NBN, Swisscom,  Austria, Bezeq Israel, Chunghwa Taiwan, Telus Canada, Telekom South Africa, SK Korea, (U.S.) AT&T, Century, Frontier, Windstream, Belgium, Omantel

Mid Pink: Smaller carriers in Germany, Norway, Finland, Japan

Light Green: Incumbent likely:  France, Germany, Italy

Coming May 19 at Paris DSL Summit. I got this wrong when Calix announced over coax. I thought it a niche product because I didn't realize the DirecTV deal brought millions of lines of coax to AT&T. AT&T is not a niche.

CTO Rami Verbin is going to present unprecedented performance live Thursday. In the release below, the weblink also takes you to some video including from AT&T's Eddy Barker. Adtran's Ronan Kel will open the show with a live demo of a related DSLAM.

I doubt the 750 up, 750 down that AT&T is discussing is quite ready, but it's coming. Double speeds will require the next generation of chips that extend frequencies to 212 MHz. That's on everyone's roadmap and Sckipio is optimistic about early delivery. 

AT&T and Telus provided quotes, a strong vote of confidence. "With dynamic bandwidth allocation, we believe AT&T can offer up to 750Mbps in both downstream and upstream performance over coax with today's chipsets," said Eddy Barker, Assistant VP of Technical Design & Architecture at AT&T. "In the next generation chipsets, we should be able to double that target – achieving as much as 1.5Gbps in each direction. 

"DBA is a game-changer," said Tim Fell, VP of Video & Broadband Services at TELUS. "In the race to deliver ultra-fast broadband, the ability to offer affordable symmetrical services will give telcos the flexibility required to meet our customers evolving high speed Internet needs."

Whether over twisted pair or coax, telcos with copper will now be able to offer better upstreams than cablecos. Cable upstreams are stuck at 5 megabits to 35 megabits, including in one DOCSIS 3.1 system. (Unannounced but in production use.) DOCSIS 3.1 provides for a gigabit upstream but that requires reshuffling spectrum usage and sometimes plant upgrades. Since CableLabs announced full-duplex cable, at least some cablecos are waiting for that rather than upgrading for now. Full duplex is still in the labs, but Belal Hamseh is confident of success. Alcatel, release below, is presenting a "proof of concept" full duplex rig at the Cable Show this week, running well into the gigabits. I doubt full duplex cable will be in wide use for 3-5 years. Advantage, telcos.

500 megabits to 800 megabits is realistic for today's from the basement or a nearby distribution point.. The bandwidth can be split in either direction and Sckipio demonstrated 750 megabits upstream in January. 400/100 or 500/200 would be an attractive offering. I'd buy it at any plausible price. Jennie does video and we have big files.

I've spent two months backing up video to Amazon's unlimited cloud drive at the top speed Time Warner will sell me, 20 megabits. I'll be cheering Rami on in Paris.

Here's the pr. I'll be speaking with all the players, including Alcatel, later this week in Paris. 

Customers will experience up to 1.5Gbps in total performance over existing copper wires

RAMAT GAN, ISRAEL--(Marketwired - May 16, 2016) - Sckipio Technologies, the leader in today, announced the world's first solution to deliver up to 1.5Gbps in combined upstream and downstream performance by dynamically allocating the bandwidth in each direction in real time.Called Dynamic Bandwidth Allocation (or DBA for short), Sckipio is giving consumers a user-experience that achieves 750Mbps in each direction. For the customer it will feel like having 1.5Gbps of total performance.

"With dynamic bandwidth allocation, we believe AT&T can offer up to 750Mbps in both downstream and upstream performance over coax with today's chipsets," said Eddy Barker, Assistant VP of Technical Design & Architecture at AT&T in a recent interview. "In the next generation chipsets, we should be able to double that target – achieving as much as 1.5Gbps in each direction." 

"DBA is a game-changer," said Tim Fell, VP of Video & Broadband Services at TELUS. "In the race to deliver ultra-fast broadband, the ability to offer affordable symmetrical services will give telcos the flexibility required to meet our customers evolving high speed Internet needs."

As consumers rapidly move to more user-generated content and live video streaming services, the demand for upload speed is growing faster than the demand for download speed., with dynamic bandwidth allocation, will provide a vastly higher upload performance than cable and a much better consumer experience.

Sckipio will present this new technology at the Summit in Paris later this week. Also at the show, Adtran, a Sckipio partner, will demonstrate the DBA technology live.

Nokia Bell Labs achieves world's first 10 Gbps symmetrical data speeds over traditional cable access networks

Press Release

  • Nokia Bell Labs XG-CABLE proof of concept demonstrates feasibility of Full Duplex DOCSIS® 3.1 laid out by CableLabs®
  • World-first lab test validates viability of symmetrical service, delivering 10 Gbps download and upload speeds over traditional Hybrid Fiber Coax (HFC) cable systems
  • Nokia innovations can help cable operators deliver enhanced ultra-broadband services to residential and business subscribers seeking greater upload speeds

May 16, 2016

Espoo, Finland - Nokia today announced a significant breakthrough in the effort to meet surging data demand from consumers and businesses. In a world-first, the company showed it is possible to achieve 10 Gbps symmetrical data speeds using traditional Hybrid Fiber Coax (HFC) cable plant. Using a prototype technology called XG-CABLE that is based on unique access technology innovations and applications developed by Nokia Bell Labs, the test demonstrates how existing cable systems can be used to deliver symmetrical ultra-broadband access services.

Achieving 'symmetrical' services - where the network can simultaneously support 10 Gbps data speeds for both uploading and downloading content - is a major breakthrough for the cable industry. With the need for high-speed upload services growing due to demand for HD video uploads, real-time gaming, live streaming video and virtual or augmented reality, Nokia Bell Labs started to explore the feasibility of delivering symmetrical service over HFC cable plants in 2014. Demonstrating for the first time that the concept is valid and achievable, the XG-CABLE test used point-to-point cable topologies to deliver 10 Gbps symmetric data speeds over coaxial cable using 1.2 Ghz of spectrum.       

Still considered a proof of concept, XG-CABLE can easily integrate into the CableLabs new Full Duplex DOSCIS® 3.1 concept, which is focused on providing cable operators with technology innovations that can transform the industry. By leveraging the XG-CABLE technology, operators can effectively use existing HFC cables over the last 200 meters to provide upstream speeds never before achievable due to the limited spectrum available.  This will enable operators to more effectively bring ultra-broadband services to consumer locations that were not physically or economically viable unless fiber was brought all the way to the residence. XG-CABLE will also provide operators with greater agility in how they use and manage their spectrum.

Federico Guillén, President of Fixed Networks, Nokia, said "The XG-CABLE proof of concept is a great example of our ongoing effort and commitment to provide the cable industry with the latest innovations and technology needed to effectively address the growing demand for gigabit services. The proof of concept demonstrates that providing 10 Gbps symmetrical services over HFC networks is a real possibility for operators; it is an important achievement that will define the future capabilities and ultra-broadband services cable providers are able to deliver." 

Dr. Robert Howald, Vice President, Network Architecture at Comcast Cable, said:  "While it is still early in the development of full duplex, Nokia's XG Cable proof of concept shows that multi-Gigabit symmetrical speeds over HFC, as targeted in the CableLabs FDX initiative, are achievable. As we continue our DOCSIS 3.1 deployments this year, this development further illustrates the power and flexibility of the DOCSIS 3.1 as a tool to deliver next-generation broadband performance."

Click to Tweet: XG-CABLE proof of concept by @Nokianetworks brings 10Gbps symmetrical speeds to cable industry - a world first

Technical background information

  • The XG-CABLE test used two different cable scenarios:
    • Leveraging a point-to-point 100m coaxial drop cable, XG-CABLE was able to deliver 10 Gbps symmetric data speeds with 1.2 Ghz of spectrum 
    • Using HFC network topologies that utilize a Fiber-to-the-Last-Amplifier (point-to-multipoint coax drop) approach, XG-CABLE was able to deliver 7.5 Gbps of symmetrical data speeds.
  • Nokia Bell Lab's XG-CABLE utilizes innovative echo canceling technologies developed by Bell Labs to achieve full duplex transmission of 10 Gbps upstream and 10 Gbps downstream simultaneously.



The Site for gfast 230 News

I’m still working through remarkable presentations from the Broadband Forum events. Michael Weissman, Bernd Hesse and team did a remarkable job choosing the speakers.

Deutsche Telecom: 35b Supervectoring Delayed to 2019
Broadcom is now over 3 years late. DT briefed German reporters after their financial call and revealed 35b was now delayed until 2019. 35b should deliver 200+ meg downloads 500-600 meters, a crucial tool for DT, which is losing share to cable. Cable now covers about 70% of Germany and is expanding. DT now only offers 50-100 megabit DSL while cable is often 400 megabits, going to a gigabit. 

The problem is software; the hardware is shipping and supposedly will work. DT says 35b is not ready to turn on. Broadcom in 2015 said 35b was in "production" in the press release below. Alcatel in early 2016 said to expect complete systems very soon. "35g is very similar to 17a so there should be little delay."

Broadcom's problems are leading major telcos and vendors to have a plan B, using Sckipio DT itself is planning extensive deployments in 2019, mostly in apartment buildings.

Gigabit 100 Meters - Unless the Wires are Lousy
Speeds are fine, "Unless there's a line problem." I've been reporting for three years that ~10% of lines have problems. In the chart by Rami Verbin of Sckipio, he finds goes ~130 meters on good lines. Poor lines have about half the reach. 

His chart roughly matches the reports from Swisscom, Belgacom, and England for both & vectored DSL. The 10% with problems can cause the majority of the line-related complaints to support. The angry customers drive up cost.

Rami's solution to reach the gigabit is bonding, supported on the Sckipio chips. Verbin made some additional points:

  • 4 gigabits is possible by bonding two decent 2 gigabit lines.
  • Even in a service from remote cabinets, ~25% are close enough to get a full gigabit."
  • cDTA and iDTA are practical ways to deliver much higher upstream by switching some bandwidth from downstream to upstream only when needed.
  • 35B will probably be similar but Deutsche Telecom doesn't expect to deploy until 2019.

AT&T Wants Coax 2-5 Gigabit Very Soon.
AT&T faces intense competition from cable, talking about 10 gigabits in both directions. (Cable will only be 1 gig down, ~100 meg up, until ~2021.) AT&T wants something to brag about as well.

AT&T gained millions of lines of coax as part of the DirecTV deal. Alcatel and Huawei are leading the development of G.mgfast. That uses 424 MHz, full duplex, to achieve ~2.5 gigabits in both directions. The reach on telco twisted pair is only about 30 meters. On coax, those speeds can probably extend far enough to service most apartment buildings. Using 848 MHz, speeds can reach 5 gigabits. The ITU standards group has been aiming for 2019-2020 for G.mgfast, too slow for AT&T's marketers. David Titus wants a high-speed standard for coax "early in 2018." He believes that is "doable."

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