Following enhancements to be added to KPI-MS-

• Add KpiComputation for SUMRATIO operation.

3GPP PM messages from RAN elements are received by ONAP in VES Common Event Format using “Perf3gpp” domainName. DataType ‘perf3gppFields’ in VES message is aligned with the 3GPP PM format Fields.

Perf3gppFields contains two main sub-structures:

• eventAddlFlds: the usual optional VES per-event data (HashMap, name/value pairs)
• measDataCollection: the actual payload, based on 3GPP specifications, but modified

A single PM VES message payload can contain an Array of Measurements (‘measInfo[ ]’) for multiple measured objects. For example, if the measured object is a “UtranCell” representing a cell, the payload can contain a  sequence of measurements, values and related information for various cells.

Some KPI calculations may require as on option to aggregate all the counters across all the measured objects.

For example, if we need to calculate KPI rrcSuccessRate = rrcSuccessCount/rrcSuccessTotal

• KPI microservice already supports an Operation “RATIO” which can model above kpi and output one output message for ‘each’ measured object. In this case, KPI value is calculated for each managedObject resulting in multiple output messages (one per cell)
• The proposal is to introduce a new Operation “AGGREGATE_RATIO” which can model the above kpi by aggregating the counters for all managed objects and output a single message. In this case, KPI counters are first aggregated across all managedObject(s) and therefore results in a single output message.