A Short-Time Burst degradation Classifier for Real-Time Traffic with Application in MPLS Ingress Nodes

We propose a novel classifier technique, named short-time burst degradation classifier (SBDC), with the ultimate goal of improving the short-term delay and the packet jitter for real-time traffic. The main idea of the proposed classifier is to provide the ability to manage the queuing delay in order to decrease the impact of short-time scale burstiness of the traffic in a flexible manner, since traditional mechanisms such as leaky bucket cannot have such kind of flexibility to smooth the traffic. Even though the proposed scheme is general and can be used in different points of the network, we propose to implement it in MPLS ingress nodes. To evaluate the performance of the proposed classifier, we introduce a new efficient scheduler, called short-term quality-of-service class based queuing (SQCBQ), to be combined with our classifier. The scheduler is based on a new scheduling algorithm named polling deficit round robin (PDRR). Also, after using the combination of the classifier and the scheduler in MPLS ingress nodes, the sort-term QoS provisioning is improved. The performance analysis shows that high quality of service provisioning for the real-time traffic can be achieved by implementing our proposed scheduler and classifier, compared to the traditionally implemented switching schemes. 1