In this paper, a new dynamic bandwidth allocation scheme called Minimum Overflow Traffic Algorithm (MOTA) is proposed to assign the bandwidth for each traffic class in the hierarchical admission control structure in ATM network. The traffic types can be video, image, voice and so on. An Overflow traffic function Q is used to adjust the bandwidth assignment each time when a new connection is required. This paper uses mean virtual cell loss probability (MCLP) as the quality of service (QoS) for the performance measurement of the system. This novel approach can minimize the mean virtual cell loss probability of the system by optimizing Q when the delay constraint is satisfied and provide high throughput in multi-class traffic environment.
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