Li-Fi and TSN enable wireless real-time deterministic data transmission
Written by: Charlotte Hathway | Published:

The Fraunhofer Institute for Photonic Microsystems (IPMS) has combined Li-Fi and Time Sensitive Networking (TSN) to enable real-time deterministic data transmission wirelessly.

In automated industrial settings, high bandwidth and guaranteed cycle times of less than one millisecond are required. It is also important to have time-critical and prioritised control of the data streams. TSN offers this through extending existing Ethernet standards by deterministic and real-time data transmission through a common network.

"Li-Fi is a technology for wireless data transmission by means of light and offers the possibility to realise transmission times in the microsecond range. In addition, the data connection with Li-Fi is reliable and offers consistent quality," explained Dr. Alexander Noack, head of development at Fraunhofer IPMS. "Li-Fi is therefore an ideal medium for real-time and deterministic wireless data communication. In this way, Time Sensitive Networking can also be implemented without cables."

He continued, "Until now, real-time data transmission for TSN was wired. However, radio transmission would be an alternative, but there are clear limits. With today's radio standards such as 4G, LTE, W-LAN or the future 5G radio standard, required latency times from automation in the microsecond range cannot be achieved. The Fraunhofer IPMS therefore integrates TSN into a Li-Fi hotspot."

The institute explains that existing real-time transmission via cable techniques are carried out using special fieldbus systems, which is unsuitable for mobile applications such as industrial robots or dynamic manufacturing cells.


This material is protected by MA Business & Leisure Limited copyright.
See Terms and Conditions.


Twitter

Land Mobile is the only monthly publication exclusively dedicated to wireless communications for businesses. Launched in 1993, this leading industry title provides practical advice, expert opinion and commentary and insightful, informative, truly authoritative editorial.

St. Jude's Church,
Dulwich Road,
London,
SE24 0PB,
United Kingdom

MA Business is part of the Mark Allen Group.