Parallel redundancy protocol improves industrial wireless reliability

Wireless solutions are often thought to be tainted by susceptibility to interference and lack of reliability. Despite recent technical improvements, wireless transmission technology still elicits concern when mission-critical processes have to be controlled or monitored via WLAN connections. However, the robustness, reliability and availability of wireless connections can be increased dramatically by using standards-based redundancy techniques, such as Parallel Redundancy Protocol (PRP). This article describes the basic technical principles, requirements and application scenarios for the application of PRP in WLAN networks.