Patent ID: 8010694
Filing Date: 2011-08-30
Classification: H04L

Abstract:
1. A method for computing a performability characteristic for a communications network that comprises a plurality of network components, the method comprising computing the performability characteristic based on numerical performance measure values computed for respective failure states of the network, at least ones of the failure states each including at least one failed network component and at least two of the numerical performance measure values being computed for a same individual one of the failure states based on respective different assumed amounts of offered traffic for the network, wherein the performability characteristic is a function of the result of multiplying a) each of the numerical performance measure values with b) a numerical probability that the network is in the associated failed network state, and wherein each of the respective assumed amounts of traffic are associated with respective durations of network operation and wherein the performability characteristic is computed based on a weighted performance measure associated with each failure state, the weighted performance measure being the two or more performance measure values computed for each failure state numerically weighted in accordance with said respective durations.