QoS in industrial wireless networks using LDM

One of the main challenges in mechatronics is to manage large amount of information data. This information is used to control the process, manage critical errors or perform maintenance actions. The traditional communication buses are wired buses which have great reliability. But with the revolution of industry 4.0, industry and mechatronic systems increased sensor and data acquisition nodes, from few devices to several sensors and actuators interconnected between them. In this new scenario the traditional wired communications systems are more complex to deploy and to maintain, and the trend is to replace wired by wireless systems, ensuring that the reliability of the wireless systems is comparable to the wired one. A communication system based on LDM (Layered Division Multiplexing) is proposed in this article to guarantee the reliability level of a wireless system where two types of data need to be transmitted over the same physical layer, critical data and non critical data. In order to prove that the proposed system is more reliable than the traditional TDM/FDM systems and can enhance throughput, BER and throughput simulations are provided.