Patent ID: 6718169
Filing Date: 2004-04-06
Classification: H04L,H04W

Abstract:
A method for determining a confidence limit for telecommunication network elements, the method comprising:storing, into a database, a number of a plurality of data transmission connections taking place through a network element during a predetermined period, determining a value for a variable describing a number of faulty operations in the network element in relation to a the number of the plurality of data transmission connections; setting a target value for the variable describing the relative number of faulty operations in the network element; setting a confidence limit for the target value, a deviation of the confidence limit from the target value changing in proportion to the number of the plurality data transmission connections; and determining an upper confidence limit for the target value by applying a following formula: UCL=p+z&agr;/2{square root over (p(100âˆ’p)/n)}whereinUCL=upper confidence limit p=target value for which the upper confidence limit is determined z&agr;/2=coefficient for determining the deviation from the confidence limit n=number of data transmission connections, wherein the deviation of the confidence limit from the target value becomes either smaller, in response to an increase in the number of the plurality of the data transmission connections, or larger, in response to a decrease in the number of the plurality of the data transmission connections.