Dynamic adaptation of IEEE 802.11e priorities for improving temporal performance and safety of a Wireless Networked Discrete Control system

This paper deals with Discrete Control Systems whose implementation is distributed among devices communicating through a Wireless Network. The use of wireless communication in these applications, called Wireless Networked Discrete Control System (WNDCS), offers many advantages, but the undeterministic behaviour of the network may have a negative impact on the temporal performance and safety of the control applications. This paper focuses on WNDCS communicating through IEEE 802.11e. It presents an algorithm that adapts the flow communication priorities according to the control states in order to increase the WNDCS quality of service and safety.