Multiple-criteria call admission control scheme for ATM networks

The performance of the CAC scheme based on the periodic measurement of traf fics (PMT) using statistical bandwidth in ATM networks is studied. The prop osed PMT CAC scheme implements the dynamic admission control which can be a pplied to the distinct delay-sensitive variable-bit-rate sources. Since the estimated bandwidth and buffer resources can be allocated adaptively by th e aggregate traffic measurement, the proposed PMT CAC scheme has great flex ibility in the bandwidth allocation according to the network status. Simula tion results show that the higher the burst of cell arrivals become, the gr eater the multiplexing gain that call be obtained. The proposed scheme is e xpected to be less overly conservative than conventional methods, so that t he network resource utilisation can be greatly improved.