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Centralized Virtual Path Bandwidth Allocation Scheme for ATM Networks
Michael LOGOTHETIS Shigeo SHIODA
IEICE TRANSACTIONS on Communications
Publication Date: 1992/10/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Communication Networks and Service
ATM, virtual path, bandwidth control, coll loss probability, optimization,
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This paper deals with a network architecture based on a backbone network, using ATM switches (ATM-SW) and ATM Cross-Connect Systems (ATM-XC). The backbone network is efficiently utilized by multiple-routing scheme. The performance of the network is controlled, exploiting the concept of Virtual Paths (VP) in ATM technology. The network is controlled by allocating the bandwidth of VPs so as to minimize the worst call blocking probability of all ATM-SW pairs, under the constraints of the ATM-SW capacities and the bandwidths of transmission paths in the backbone network. To improve network performance, we use a trunk reservation scheme among service classes. We propose a heuristic approach to solve the problem of non-linear integer programming. Evaluation of the proposed optimization scheme, in comparison to other optimal methods, shows the efficiency of the present scheme.