Through the adoption of protocols TSN, designers and systems engineers can make data transmission at specific time intervals (deterministic) and a guaranteed arrival time (synchronization), an essential requirement for AV systems.

By Graeme Harrison *

The Internet of Things (IoT, by its acronym in English), a universe of objects as diverse as consumer electronics, coffeemakers and integrated cardiac monitors with technology that allows them to collect and exchange data without human intervention, is the last great It is stimulating progress and technological development on a massive scale.

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Perhaps the most important part of this development for the internet of things is the TSN standard, developed to achieve timely data transmission network environments. Many companies that develop products for IoT such as Intel, Cisco, GE, and National Instruments (NI), consider the TSN standard as the technology that makes this new universe made possible.

So what is TSN, and how it differs from AVB? What does the TSN for the Internet of things? And what does all this with the field of professional audio and video?

In 2004, the IEEE started a study group AV Ethernet transmission. The working group endorsed a collection of IEEE standards low level 802.1 and 1722 some IEEE standards higher level with specific applications for synchronizing audio and video transmissions. This group became the Working Group Audio Video Bridging (AVB) currently serving four industries, namely the professional AV industry, consumer electronics, automotive and industrial control. At the end of 2012, IEEE changed the name of the group and became the working group Time Sensitive Networking (timely data transmission networks) designation more accurately reflects the focus of its broad scope of work, here comes the AVB protocol currently used.

In short, the TSN is an open standard (new in the field of professional audio and video) that could finally eliminate time wasted in the process of deciding which protocol to use in an AV system. In short, the TSN takes the conversation beyond the protocols and focuses on a broader discussion on how to integrate the various media and systems we use in a network solution.

TSN and The internet of things
Within the existing Ethernet technology, the ability to ensure the timely arrival of the data faces two obstacles: the speed and the order they are received data packets. The TSN faces both problems, providing a synchronized packet transmission and deterministic data in a timely manner (or low latency). Companies developing these products IoT considered fundamental characteristics of TSN for IoT data transmission in different industries and applications.

What have to do the TSN and the internet of things industry professional audio and video?
The needs and expectations associated with the audio and video are growing and evolving. Organizations of all industries are demanding more features AV, among others, the ability to connect more people through different media and devices. As AV solutions evolve, so will the expectations that are woven around them. Because each time the AV signals reside on the network, are becoming part of a computer ecosystem and ever expanding intelligent buildings. The logical next step is for professional AV systems of the Internet of things get, which means that devices AV professionals should interact very well in the network with their counterparts IoT (eg, not using too much bandwidth, maintaining the data packets in the right order and make timely). This positive interaction will allow a smooth transition to a truly integrated network of mixed use.

In addition, because the TSN is an open standard, commercial property is removed from the development process. The removal of developments from a single source and proprietary rates equal participation conditions for companies in the market. Anyone can access the standard, which means that everyone has the opportunity to develop new products that fit him, with which the door is left open to manufacturers of professional audio and video industry to explore new vertical markets .

History has shown that everyone, from manufacturers to end users benefit by having both an open and a group of stakeholders committed to developing and promoting common standard technologies. Two success stories constitute the DVD Forum (DVD Forum), which promoted the unified DVD standard, and Wi-Fi (Wi-Fi Alliance) Alliance, which advocated standards for wireless networks. Now the AVnu Alliance (AVnu Alliance) joins the list to promote the adoption of AVB / TSN standards.

The AVnu Alliance is a consortium of technology companies (from Intel and Cisco to BMW and Gibson) with presence in markets professional audio and video, automotive, consumer electronics and industrial sector. Its members develop and manufacture products according to the open standards of IEEE, with the overall objective of achieving interoperability. Through independent testing process and certification by third parties, implemented by AVnu it ensures that all certified products comply with open standards IEEE as low latency, synchronization and deterministic data transmission, and can operate with certified products from other manufacturers in a mixed ecosystem that is easy to configure and use. The process of testing and certification of the Alliance benefits the end user by enabling integrators to choose the best products in their class without asking whether the selected products work well together.

The efforts of the AVnu Alliance are gaining speed and getting more and more public support. Recently, the AVnu Alliance named Gary Stuebing, engineering manager and Cisco IoT standards, as chairman of its board, while Kevin Stanton, chief engineer at Intel, was named president. This measure seeks not only to locate the key industry people in positions of decision making, but it is a clear sign of public support and the importance of the AVB / TSN standards.

Why you should worry the market of professional audio and video?
The standard TSN and the Internet of things are about to make a big impact on the market of professional audio and video. The IoT will bring a new level of interdependence between systems that transform the way it interacts technology, reconfiguring markets, creating new products and redefining the processes that feed systems and products today.

At the same time, the TSN allow management, control and media streaming requires an integrated network. Through the adoption of TSN protocols, designers and systems engineers can make data transmission at specific time intervals (deterministic) and a time guaranteed arrival (synchronization), an essential requirement for AV systems that transmit different content several locations in response to emerging needs and at predetermined times.

What more immediately impact the audiovisual industry is the need for switches TSN. Several vendors are already offering this type of switches and other companies such as Cisco they have already expressed interest in the development of this new hardware, a promising sign that in the not too distant future could have more switches available in the market.

The other point of impact will the demand for smaller endpoints by companies that adopt the standard TSN. This demand will mean that the audiovisual industry will have a supply of low-cost terminals at a faster pace than in the past. In addition to audio endpoints, whether Axon as Barco and produce video terminals and probably also manufactured new video products that use the standard TSN.

According to the TSN standard evolves, the AV market can have the possibility of completely new technologies based on this protocol, that leverage benefits such as more channels or continuous reduction of latency.

AVB, as a subset of standards within the TSN protocol continues to gain acceptance within the IT community and will benefit from the future development of TSN. As more industries demand and take advantage of digital high-speed transmissions, synchronized, deterministic and a high number of channels, the audiovisual industry will expand into markets previously considered outside the typical scenarios or areas of strength from the sector.

How should you prepare professional audiovisual industry for the impact that the TSN protocol?
Most likely the TSN protocol passes through a number of revisions before becoming standard use. Meanwhile, networked media systems continue to gain acceptance among IT departments, which will lead to greater collaboration between IT and AV disciplines. To be prepared for this impending development, AV integrators systems must adopt a change-oriented in their workflows if they have not already done so, approach since the changes in the industry will continue to occur rapidly as advance developments in IoT . The TSN protocol allows a wide range of possibilities, from designs smarter buildings to more efficient networked systems or better energy sustainability through solutions that leverage the benefits of energy efficiency in Internet networks (E3) . Opportunities abound for those integrators who are ready to seize them. Meanwhile, AV professionals can prepare with confidence for the proliferation of new AVB / TSN switches, the ratification of the IEEE specifications for the timely transmission of data and the development of new classes of AVnu interoperability standards.

In conclusion, the AV specialists, whether integrators or consultants, need to think beyond the traditional audiovisual universe, learn about what is happening in other technology industries and be open to adopt a philosophy that emphasizes innovation and enabling them to optimize and unify the audiovisual industry and the computer industry.

* Graeme Harrison is executive vice president of Biamp Systems.

Richard Santa, RAVT
Author: Richard Santa, RAVT
Journalist from the University of Antioquia (2010), with experience in technology and economics. Editor of the magazines TVyVideo + Radio and AVI Latin America. Academic Coordinator of TecnoTelevisión & Radio.


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