Preventive actions have to be used to avoid congestion in ATM networks. These actions are represented by Call Admission Control (CAC) and Usage Parameter Control functions (UPC). In this paper two UPC algorithms are compared and an Enhancement of the Leaky Bucket mechanism is presented. The comparison is based an the results of several trace driven simulations. The simulations, realised an a CAMAD tool, are driven by MPEG1 Video traces as input traffic. The effectiveness of the proposed algorithm has been evaluated in terms of response time and transparency. These performance indexes have been obtained considering the number of non-conforming cells and the mean value of the conforming cells path.
Prediction based UPC mechanism for VBR video traffic
GARROPPO, ROSARIO GIUSEPPE;GIORDANO, STEFANO;
1998-01-01
Abstract
Preventive actions have to be used to avoid congestion in ATM networks. These actions are represented by Call Admission Control (CAC) and Usage Parameter Control functions (UPC). In this paper two UPC algorithms are compared and an Enhancement of the Leaky Bucket mechanism is presented. The comparison is based an the results of several trace driven simulations. The simulations, realised an a CAMAD tool, are driven by MPEG1 Video traces as input traffic. The effectiveness of the proposed algorithm has been evaluated in terms of response time and transparency. These performance indexes have been obtained considering the number of non-conforming cells and the mean value of the conforming cells path.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
