Adaptive admission control and scheduling for wireless packet communication

This paper describes a new admission control and scheduling scheme that enables adaptive control of resource usage. The new scheme has been designed for wireless networks that put high demands on resource reservation due to their inherent lack of sufficient bandwidth, high error probability and frequent resource overload due to the users\´ mobility. The scheme deploys bandwidth adaptation on the application level and combines these methods with admission control and packet scheduling on the network layer by taking into account packet error rates measured on the link layer. The scheme makes use of the so-called "enriched packet streams" that allow for congestion prediction and forms the basis of delay-sensitive bandwidth adaptation at network nodes. Measurements received from simulation studies show up the benefits gained from the proposed concepts.