The Evolution of the Broadband Network

Ric_Johnsen_ektron Richard "Ric" Johnsen June 23, 2014

Evolution of the BB networkThere is no doubt operators must evolve their networks from a hybrid fiber/coax networks (HFC) platform to a converged optical platform delivering Ethernet/IP-based services to the user. This is not your father’s cable industry. With consumers watching more content on You Tube, Hulu and Netflix, they are not necessarily watching everything at home. Consumers are mobile and they are watching content at anytime and anywhere.

In our latest infographic—The Evolution of the Broadband Network—we highlight several areas where operators should consider to provide the necessary bandwidth. Network evolution will vary from operator to operator. It will be based on available capital, competition and the current state of the network; however, migration phases will drive changes to the network.

Pushing Fiber Deeper

Today, operators are serving between 250 and 1,000 homes per HFC node. This level of bandwidth creates congestion and over-subscription during peak demand periods. To improve speed and capacity during peak periods, operators must continue to split nodes and create smaller service group sizes. Node splits will shrink service groups over a period of time to a range of 64 to 250 homes.

Headend Convergence

Networks and network management systems can be more efficient by aligning video and service groups. How can you eliminate service group separation and simplify the headend? The answer is by deploying a universal platform supporting carrier channels for both video and DOCSIS.

Passive Optical Networks

Passive optical networks (PON) are one of the most cost effective methods of enhancing the IP infrastructure and helps with the deployment of a network capable to address residential and small-to-medium enterprises with more than 10 GBPS of bandwidth service requirements. While an EPON solution works well for expanding networks into 200 to 300 new home builds on a financial payback model, the use of Radio Frequency over Glass (RFoG or RF PON) is a network architecture that can cost effectively integrate smaller new builds into an existing HFC infrastructure (the infrastructure is the same for RFoG and PON).

Networks of Tomorrow

For service areas where subscriber growth, node splits or migration to serve commercial services are forecasted in the future, the installation of a microduct as part of an outside plant upgrade allows for blowing of microfiber cables at a later time. Small format microfibers, in configurations up to 144 fibers, can be air blown in to microducts at speeds exceeding 250 feet per minute at lengths of thousands of feet. This will result in a rapid and cost effective way to push fiber deeper to the node or subscriber without the incremental cost of aerial or underground construction while maintaining the coaxial cable to support network power requirements.

These are just a couple of examples from The Evolution of the Broadband Network infographic. Check it out for some more statistics depicting how this evolution is driving the cable and broadband markets.

About the Author


Richard "Ric" Johnsen

Richard “Ric” Johnsen is senior vice president, Network Cable and Connectivity, Broadband Networks, for CommScope, a global leader in infrastructure solutions. Previously, he was senior vice president, PLM Outside Plant Solutions. Mr. Johnsen joined CommScope in 2010 and was senior vice president of the Broadband division. Previously, he was president and chief executive officer of Alloptic. His prior work experience includes time at OFS as a vice president with responsibilities for fiber optic cable sales, marketing and product engineering. During his tenure at OFS, he led the team responsible for developing and introducing the totally “dry” loose tube fiber cable design to the market. He also worked at Alcatel where he served in numerous positions including engineering, operations and sales. His last position at Alcatel was vice president of the optical fiber business for Europe and Asia. During his time at Alcatel, he led the team responsible for developing and commercializing a colored coating for optical fiber (ColorLock). The project was recognized by Alcatel as the winner of the 1998 Alcatel “Hi-Speed” Award for speed of execution and impact to the business. Mr. Johnsen served 11 years in the United States Army, serving in numerous positions globally as a Signal Corps Officer and holding Airborne and Ranger qualifications. Mr. Johnsen has a BS degree in general engineering from the United States Military Academy in West Point, NY and an MS degree in communications engineering from the United States Naval Postgraduate School in Monterey, CA.