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Broadband integrated services digital network based on asynchronous transfer mode (B_ISDN/ATM) will provide diverse services in the near future. Those services have quite different quality of service (QOS) requirements in terms of delay and loss. How to fulfill those QOS in topic in this field. In this thesis we aim at departure scheduling that is to decide which traffic if served next will cause less penalty in the future. We found that the Value Iteration Algorithm can gives an optimal solution to our departure scheduling problem. However, this approach is not practical in real network application due to its computational complexity. So, we propose a near optimal departure scheduling scheme. We will show that in most cases our scheme gives a optimal decision. Furthermore, we build a simulation to simulate the real network operation and apply our scheduling scheme to control the departure.
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