CableLabs today unveiled the Full Duplex DOCSIS 3.1 specification, bringing symmetric multi-gigabit services over existing hybrid fiber-coax (HFC) technology and increasing upstream capacity to cable operators.
Under today's DOCSIS networks, operators must mix and match upstream and downstream traffic. But Full Duplex DOCSIS now enables operators to deliver symmetric services via concurrent transmissions in the same spectrum, without touching downstream capacity, wrote Belal Hamzeh, vice president of research and development for wireless technologies at CableLabs, in a blog.
Full Duplex DOCSIS 3.1 is the next step up from the existing DOCSIS 3.1 spec, which can deliver up to 10 Gbit/s downstream, 1 Gbit/s upstream. This latest iteration offers up to ten times today's available DOCSIS upstream speeds, according to a CableLabs paper on Full Duplex DOCSIS. This allows operators to deploy future-ready networks in preparation for next-generation applications and uses, the organization wrote.
"In the United States, more than 90% of households are connected to an HFC network, and consumers typically have higher download speeds than upload speeds," said Phil McKinney, president and CEO of CableLabs, in the blog. "By enabling Full Duplex DOCSIS, upstream and downstream traffic can flow at up to 10 Gbps concurrently, doubling the efficiency of spectrum use."
That's increasingly important, as more subscribers need more powerful upstream speeds in a world of cloud, augmented and virtual reality, multi-player games, IP communications and user-generated content. For example, live video traffic will account for 13% of Internet video traffic by 2021, according to Cisco's report, "The Zettabyte Era: Trends and Analysis." Online gaming traffic is predicted to surge at a compound annual growth rate of 57% between 2016 and 2021, accounting for 4% of worldwide consumer Internet traffic in 2021 versus 1% in 2016, the study found.
Of course, other communications service providers are not sitting idly by as cable's infrastructure standards advance. Technologies such as vectoring and Gfast also are making strides in speed, symmetry and latency.
After collecting 42 million speed tests for 12 months, Cable.co.uk analyzed the data to determine the fastest broadband in the United States, finding tiny Rhode Island led the way, followed by Washington and Massachusetts.
Google Fiber executives such as Cedric Lam will share insight into PON and smart cities during Broadband World Forum, providing a peek into the currently publicity-shy webscale communications disruptor.
Webscale companies' $2.5 billion investment in communications technologies last year pales in comparison to established industry providers' $400 billion expenditures, and signals it's time for partnership, not oneupmanship.
5G promises connectivity 10 to 100 times faster than 4G networks, with latencies less than 1msec, making real-time applications such as tactile Internet useable over mobile networks for the first time. However, mobile operators will need to deploy ten times as many radio sites, each with highly reliable plug-and-go multi-gigabit connections, to achieve that level of performance.
In this UBB2020 webinar, Heavy Reading's Gabriel Brown and ADTRAN's Ryan McCowan will:
Discuss 5G densification strategies and their network impact
Outline the different requirements for backhaul and fronthaul needed to support 5G densification strategies
Explore next-generation PON-fixed access technologies and software defined networking principles as emerging solutions to accelerate 5G densification
Outline how NG-PON2, the next-generation multi-gigabit fiber technology, supports the x-haul (fronthaul, backhaul and crosshaul applications) requirements of 5G
NG-PON2 broadband access technology is already in trials with multiple major network operators but is it too early for the commercial deployment of this next generation ultra-broadband technology? In this UBB2020 live radio show, ADTRAN's Kurt Raaflaub provides an update on NG-PON2 developments and chats to Light Reading's Ray Le Maistre about how this technology could play a role in production access networks in 2017.