Dependable Admission Control for Mission-Critical Mobile Applications in Wireless Mesh Networks

Wireless Mesh Networks (WMNs) provide a promising foundation for a flexible and reliable communication infrastructure in industrial environments. Meeting the QoS demands of industrial applications, though, requires the deployment of an admission control to avoid network overload. The presence of mobile stations, however, causes dynamics within the network that severely impacts the available capacity. For instance, if a communication route switches from one to two hops, twice the resources are consumed due to self-interference. To neither jeopardize QoS guarantees nor having to cancel present flows, our dependable admission control scheme foresees and considers those dynamics during resource reservation to handle station mobility. We describe a highly dependable approach and further propose an estimation method that improves network efficiency. The evaluation results show that our novel approach allows for a dependable admission control even in presence of mobile stations and thus enables the network to provide a new class of guarantee for mission-critical mobile applications.