Event-based sampling for wireless network control systems with QoS

Communications load in a wireless channel can saturate the network when the wireless link between stations is weak. This paper shows that, by using a state-differential event based sampling scheme with QoS, this load can be reduced such that a control loop closed over that network can remain stable for much worse wireless channel conditions. By varying the event threshold, systems with high state variance will have higher sampling rates than those without, while the overall throughput of the system is reduced to a level which does not saturate the network.