A New Way to Build Non-blocking Multicast Networks for Media

At the SMPTE 2018 Technical conference, Dr. Takeshi Shimizu, Media Links, presents a revolutionary new theory about constructing a three-stage Clos network with non-blocking multicast capability.

Dr. Takeshi Shimizu, a high-speed network expert at Media Links, presented his paper on “Non-blocking Multicast Networks for Transporting Stream Media”, proposing a new approach for building three-stage Clos networks with non-blocking multicast capability at the SMPTE 2018 conference..

A Clos network is a kind of multistage circuit switching network which represents a theoretical idealization of practical multistage switching designs. It was invented by Edson Erwin in 1938 and first formalized by Charles Clos in 1952.

Dr. Shimizu’s reviewed the massive 800 X 800 HD-SDI IP video router constructed by Media Links in 2008 by using Leaf-Spine IP architecture.

Dr. Shimizu's paper defines a brand new approach for building three-stage Clos networks with non-blocking multicast capability.

This will involve a wide-sense non-blocking (WSNB) condition and a re-arrangeable non-blocking (RNB) implementation of multicast networks.

Dr. Shimizu has been with Media Links since 2015.

Dr. Shimizu has been with Media Links since 2015.

Most importantly, this approach also enables the derivation of RNB multicast networks by reducing the number of middle switches of a given WSNB multicast network.

This can result in a reduction of up to 50% of the switches compared with the best-known WSNB designs in a relatively smaller but practical size of network.

Dr. Shimizu’s presentation will illustrate how this new theory can enable these networks to be built efficiently with up to 6 times more port counts of the building block switches.

Dr. Shimizu received the M.E. and D.E. degrees in Information Engineering from the University of Tokyo, has been with Media Links since 2015, and is a member of SMPTE, IEEE-CS, IEEE-ComSoc, the Information Processing Society of Japan (IPSJ) , and the Institute of Electronics, Information and Communication Engineers (IEICE) in Japan.

You might also like...

Audio For Broadcast: Cloud Based Audio

With several industry leading audio vendors demonstrating milestone product releases based on new technology at the 2024 NAB Show, the evolution of cloud-based audio took a significant step forward. In light of these developments the article below replaces previously published content…

Designing IP Broadcast Systems: Why Can’t We Just Plug And Play?

Plug and play would be an ideal solution for IP broadcast workflows, however, this concept is not as straightforward as it may first seem.

Why Live Music Broadcast Needs A Specialized Music Truck

We talk to the multi-award winning team at Music Mix Mobile about the unique cultural and creative demands of mixing music live for broadcast.

An Introduction To Network Observability

The more complex and intricate IP networks and cloud infrastructures become, the greater the potential for unwelcome dynamics in the system, and the greater the need for rich, reliable, real-time data about performance and error rates.

Designing IP Broadcast Systems: Part 3 - Designing For Everyday Operation

Welcome to the third part of ‘Designing IP Broadcast Systems’ - a major 18 article exploration of the technology needed to create practical IP based broadcast production systems. Part 3 discusses some of the key challenges of designing network systems to support eve…