Output band presumption manner, the output band design device, in the program

摘要

PROBLEM TO BE SOLVED: To provide a band design method for obtaining a minimum band for satisfying a QoS target value without increasing the measurement load and without the need for especially assuming a traffic model.;SOLUTION: The method estimates a necessity minimum output band for satisfying a predetermined target packet loss rate in a packet network. The method is characterized in that the total number of bytes (queue length) of a packet resident in an output transmission wait buffer is measured and stored in a storage means by each preset measurement period T, a maximum value (MN) as a result of count of a queue length stored in the storage means is obtained among a predetermined number (N) of measured values, an attenuation rate (θN) with respect to the queue length is obtained on the basis of the maximum value (MN) of the measured values and the number N of the measured values, a queue length distribution is obtained from the attenuation rate with respect to the queue length, and the necessity minimum output band is estimated to satisfy the predetermined target packet loss rate from the queue length distribution.;COPYRIGHT: (C)2005,JPO&NCIPI