KPI Composer helps administrators define, compute, and visualize new KPIs from a variety of data sources in real-time. This enables slicing of real-time signaling and traffic telemetry across many dimensions and computes unique KPIs relevant to network operations, engineering, and analytics.
You can use the KPI composer page in the System menu to configure a custom KPI. After the KPI is configured and saved, it computes in real-time and can be visualized in the Composed KPI tab in the Explore page.
These topics describe the various options available to configure a custom KPI.
Enter a name and optional description for the new KPI definition. The name field supports alphanumeric characters, underscores and spaces.
The description field supports arbitrary characters.
Select any preset filters to apply to the KPIs. Presets must be defined prior to use. See Presets for details on how presets are configured.
KPI Composer enables KPI creation using events from the following data sources as input.
All events present in the LTE CTR data feed. These event categories and their metrics follow the same naming conventions as the Ericsson LTE CTR specification.
All events present in the NR CTR data feed. These event categories and their metrics follow the same naming conventions as the Ericsson NR CTR specification.
RSPE records created by joining events from different data streams belonging to the same subscriber session.
The event filter is used for filtering out events based on certain criteria. Filters can be applied to any parameters/metrics of the event, and must evaluate to true or false. The event is used for computation only if the filter evaluates to true.
All metrics used in the event filter must first be selected from the Available Metrics section. The variable names used in the filter (like V0, V1 etc) must match the variable names in the Selected Metrics section.
An arbitrary number of conditions can be applied to any KPI using the operators defined above.
The expression defines how the KPI is calculated from the selected metrics.
Similar to the event filter, all metrics used in the expression must first be selected from the Available Metrics section.
Expressions are evaluated using standard operator precedence (BODMAS rule). The expression field accepts arbitrary arithmetic expressions created using basic arithmetic operators and a few special functions.
This section defines how the KPI is aggregated over time and visualized in the Composed KPIs tab in the Explore page.
The following aggregation types are supported.
Set the output units for the composed KPI. This field is for user reference only and its choice does not affect the computed KPI. The options available for selection are