Patent Document ID: 10135698
Application ID: 14890968
Patent Flag: 1

Claim One:
1. A method of monitoring a communications network having resources used to provide services, some of which are superordinate services which depend on contributory ones of the services, the method comprising: selecting from a plurality of resource key performance indicators, R-KPIs, obtained from measurements from the resources, the R-KPIs being of contributory services contributing to a key performance indicator, KPI, of a corresponding superordinate service, wherein selecting is based on indications of whether the superordinate service was operating normally at times related to received R-KPIs, so as to select those of the received R-KPIs which correspond to a normal operation of the superordinate service; generating automatically from the selected R-KPIs a characteristic division of relative contributions of the R-KPIs to the KPI of the corresponding superordinate service for the times that the service was operating normally; and validating the generated characteristic division by identifying a mismatch between a first state of whether current R-KPIs are individually acceptable and a second state of whether a current KPI of the corresponding superordinate service is acceptable.