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Preparations for Full Duplex DOCSIS® 3.1 Technology are Marching Along

Doug Jones
Principal Architect

Mar 7, 2019

Built on the successful completion of CableLabs’ DOCSIS 3.1 specification, Full Duplex (FDX) DOCSIS® 3.1 technology (now DOCSIS 4.0 technology) is a key component of the 10G platform that will significantly elevate the level of services available to consumers using existing cable broadband networks. With FDX DOCSIS 3.1  technology (now DOCSIS 4.0 technology), the same frequencies are simultaneously used for both upstream and downstream traffic, virtually doubling the capacity of the coaxial cable. More capacity means lower latency and speeds of up to 10G for both upstream and downstream traffic. Cable broadband users will be much more satisfied with services, leading to greater customer retention and the ability to attract new customers.

Field Testing Analysis

In the past year, CableLabs has thoroughly scrutinized FDX DOCSIS 3.1 technology (now DOCSIS 4.0 technology) in the field. Test equipment and engineers have flown around North America performing analysis on real cable broadband networks, including both a newly constructed plant and coaxial cable that was installed back while I was in college (that coax is well past voting age…). Volumes of data were collected, such as technical parameters on various configurations and various weather conditions: data from real networks in the real world.

And it works. The testing results were positive and in line with expectations, and products built to the specifications are expected to deliver the higher symmetrical bit rates associated with full duplex operation. Now, coaxial cable networks won’t be a limiting factor in getting to full duplex and the next generation of broadband services.

Now that CableLabs has developed FDX DOCSIS 3.1 specifications (now DOCSIS 4.0 technology), members can move forward with this exciting technology. Members can further benefit from the Kyrio testing services that provide all the engineering expertise and lab equipment needed for testing FDX DOCSIS 3.1 (now DOCSIS 4.0 technology). All the operator has to do is identify network segments where the work is to be performed.

What’s Coming in 2019

Getting back to the lab (which is a lot dryer and warmer than some of the outside plant scenarios where CableLabs has worked), CableLabs is:

  • Hosting lab activities to support the development and interoperability of FDX DOCSIS 3.1 (now DOCSIS 4.0 technology) products
  • Bringing back important discoveries from the field testing into the labs to support testing in real-world situations and scenarios.
  • Building the lab infrastructure needed to rigorously analyze performance and reliability in a variety of configurations

CableLabs and the cable industry are continuing to advance cutting-edge developments in cable broadband networks to remain ahead of consumer demand. The focus is on developing innovative network technologies, as well as defining optimal network architectures that provide the necessary capacity and performance in each network segment for multi-gigabit services today and in the future.

You can learn more about Full Duplex DOCSIS 3.1 technology (now DOCSIS 4.0 technology) and the 10G platform by clicking below. 


Learn More About 10G
 

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