Patent ID: 6580691
Filing Date: 2003-06-17
Classification: H04L,H04Q

Abstract:
A data network comprising:a network switch behaving as a buffer of fixed size when transmitting a multiplex of current connections at a constant service rate; a plurality of connectors feeding the switch; means for recording the volume of traffic of current connections for each current connector to the switch over a block of time; means for estimating the scaled cumulant generating function SCGF for each current connection recorded; means for summing the estimated SCGFs to obtain an aggregate SCGF; means for using the aggregate SCGF to obtain an estimated bandwidth requirement for the multiplex of current connections; means for presenting a new current connection requesting admission to the network by providing a declared parameter of the connection requesting admission; prediction means for providing a predicted SCGF for the new current connection requesting admission to the network from the declared parameter; means for predicting the bandwidth requirement of the connection requesting admission from the predicted SCGF; means for summing the estimated and predicted bandwidth requirements for the switch to produce a revised bandwidth requirement; and control means for deciding to admit the connection requesting admission on the basis of the revised bandwidth requirement for the switch.