Evaluation of UPC functions for peak cell rate enforcement

A number of Usage Parameter Control (UPC) functions are compared with respect to their ability to detect violation of the negotiated traffic contract. The traffic contract parameters in this study are the peak cell rate and the maximum cell delay variation (CDV). In order to take cell delay variation into account, tolerances must be introduced in the UPC functions. This simulation study investigates how this affects their ability to detect contract violation. None of the window mechanisms studied have been found capable of detecting all types of contract violation.