Dynamic bandwidth allocation with optimal number of renegotiations in ATM networks

This paper introduces a scheme for online dynamic bandwidth allocation for variable bit rate (VBR) traffic over ATM networks. The presented method determines the optimum bandwidth renegotiation time and bandwidth amount to allocate to a VBR traffic source by minimizing predefined cost functions. A traffic rate predictor designed by wavelets is provided as feedback to the system. The results show that the introduced scheme minimizes both under-utilization of the available capacity and queuing delays. The proposed method can also be deployed in weighted fair queuing disciplines to update dynamically a weight coefficient assigned to an application.