Patent ID: 6608815
Filing Date: 2003-08-19
Classification: H04L,H04Q

Abstract:
A Call Admission Control (CAC) system for use within a data network for accepting or rejecting new calls in the data network, said system comprising:a) a signaling extractor for periodically obtaining data flow information from said data network including parameter values representative of network resource parameters including a buffer size (BS), a peak cell rate (PCR), a sustainable cell rate (SCR), and a user specified Cell Loss Ratio (CLRs), each parameter value associated with a class of service; b) a Hurst meter block for determining a Hurst parameter (H) value from the data flow information based on the class of service; c) a tuning factor block for determining a Tuning Factor (TF) value from the data flow information; d) an effective cell rate (ECR) calculator block responsive to the Hurst meter block and the tuning factor block for extracting a Maximum Burst Size (MBS) value from the data flow information and determining an Effective Cell Rate (ECR) value equal to SCR/[CLRs (SCR/PCR)]MBS/(BS/TF)/(2âˆ’2H); e) an accumulator block responsive to the ECR calculator block for estimating required a Total Effective Cell Rate (TECR) value and for updating the TECR value when a new call is accepted; f) a booking factor (BF) block for determining a Reference Effective Cell Rate (RECR) value from the data flow information and the parameter values; and g) a comparator block responsive to the accumulator block and the BF block for comparing the values of TECR and RECR and providing a go-no-go signal indicating that the new call is to be accepted when TECR