Simple Measurement-based Connection Admission Control for Heterogeneous Traffic Sources

The primary role of traffic control in multimedia networks is to protect the network and the user in order to achieve predefined network performance objectives, e.g. cell loss ratio. An additional role is to optimize the use of network resources for the purpose of achieving realistic network efficiency. The challenge is to design simple control functions that improve efficiency under any traffic circumstance. In this paper we implemented a Connection Admission Control (CAC) scheme that is measurement-based in order to adapt admission decisions to any traffic circumstances, henceforth we used heterogeneous traffic sources in our simulations. This does not imply that our traffic sources provide a perfect model to multimedia network traffic. As shown through simulations, the proposed CAC scheme is practical and can be realistically implemented. We achieved high network utilization that is close to a performance benchmark (as obtained by the complex method based on call-by-call measurement..