Comparison of traffic management schemes for ATM networks

The cell multiplexing characteristics of an asynchronous transfer mode (ATM) network should be evaluated on the so-called worst-case traffic as characterized by the usage parameter control algorithm. A bandwidth allocation method suitable for any periodic cell traffic is proposed. Numerical assessment shows that the proposed method can achieve relatively high link utilization. Using the proposed method, the performances of traffic management schemes adopting the sliding window or leaky bucket algorithms are compared. The result is that traffic control using the sliding window algorithm ensures efficient network resource utilization. Traffic control using the leaky bucket fails to identify the worst-case traffic permitted by the leaky bucket algorithm.