Model-based control plane for fast routing in industrial QoS network

Industrial networks demand centrally controlled Quality of Service (QoS), often in the form of hard real-time guarantees. We propose a novel SDN-based QoS control paradigm that (i) maintains an accurate network model through network calculus to avoid a control loop over forwarding and control planes, (ii) routes flows over a network of "queue links", whereby each physical network link houses multiple queue links (with different QoS levels), and (iii) manages QoS through delay-constrained least-cost (DCLC) routing on the network of queue links.