Method of calculating cell loss ratio and call accept controller

Details Method of calculating cell loss ratio and call accept controller Method of calculating cell loss ratio and call accept controller

1995-10-06

1997-10-14

Olms, Douglas W.

Multiplex communications

Diagnostic testing

Determination of communication parameters

H04J 314

Patent

active

056779070

ABSTRACT:
A cell loss ratio calculating method is a method of calculating a cell loss ratio of a buffer for storing call cells from a plurality of traffic sources and comprises a distribution expressing step, a number-of-average-arrivals expressing step, an average path calculating step and a cell loss ratio calculating step. In the distribution expressing step, a distribution of the number of cells accumulated within a time for which the cell passes the buffer is expressed by use of a Poisson distribution on an assured side. In the number-of-average-arrivals expressing step, the number-of-cells distribution is expressed with parameters representing a number of average arrivals of the Poisson distribution. In average path calculating step, an average path is calculated with respect to time-variations of a cell arrival ratio and a distribution of the cell arrival ratio. In the cell loss ratio calculating step, the cell loss ratio of the buffer is calculated by using a result of the calculation in the average path calculating step as well as by using a table for storing a precalculated value of a number-of-lost-cells expected value corresponding to each number of average arrivals.

REFERENCES:
patent: 5189667 (1993-02-01), Esaki et al.
patent: 5267232 (1993-11-01), Katsube et al.
patent: 5519689 (1996-05-01), Kim

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