Avnu Alliance whitepaper demonstrates the power of TSN in industrial and ProAV
The Avnu Alliance, a consortium of member companies that work on creating an interoperable ecosystem of networking devices, has released a whitepaper on the power of Time Sensitive Networking (TSN) in industrial and ProAV settings.
Avnu Alliance members tested TSN capabilities of time synchronisation (802.1AS) and traffic shaping (802.1Qbv) over WiFi in industrial automation applications. During testing, a remote-controlled robotic arm was made to perform several fine manipulation tasks demonstrating the use of time synchronisation and time-aware scheduling capabilities.
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Avnu members observed that without the 802.1Qbv capability, this task was severely impacted by competing traffic. When the TSN capability was enabled, the arm successfully completed the manipulation task even when competing traffic was present.
The robot control actuation and gripper status were consistently delivered over the wireless link, with most actuation commands arriving within 2ms of the previous sample. This demonstrates TSN’s ability to ensure a smooth, reliable performance.
“Advances in wireless technologies hold the potential to transform industrial and ProAV applications, however low latency and high reliability is required for these to be used successfully,” Avnu Alliance president and chair of the Wireless TSN working group Dave Cavalcanti says.
“The results, testbeds and application demonstrations showcased in our latest whitepaper prove the potential of TSN over WiFi for industrial and ProAV use cases, validating capabilities such as time synchronisation and bounded latency.”
ProAV applications, such as audio and video streaming, require precise, accurate time synchronisation and low-latency communications to deliver seamless experiences for users. To demonstrate the benefits and capabilities of WiFi TSN for these applications, a testbed was designed to stream audio from a P1 Talker to a Listener over Ethernet and WiFi. Members experimenting with end-to-end 802.1AS-based time synchronisation found the maximum offset introduced by the wireless link was approximately four microseconds.
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