A flexible self-adaptable scheduling model for QoS multimedia provision

With the increasing growth of multimedia applications, it is becoming crucial to support effectively the QoS guarantees of multimedia applications in future communication networks. This area has drawn very much attention and many significant results have been achieved. However, how to implement QoS management efficiently and flexibly in a wide range of networks, including wireless access networks and backbone, still remains problematic. We present a simple but effective adaptable scheduling model; it consists of two asymmetric queues under an exhaustive service policy, and characterizes the ability to ensure automatically the delay requirements of traffic according to its burstiness. Moreover, we have adopted a novel analytical method to deduce the exact expression of mean delay. Simulations verify the validity of the analysis. Furthermore, as an instance, numerical discussions about voice/video aggregation are presented; it is shown that our model can conveniently achieve the delay demands for both voice and video.