The following Figure shows how MetricDefMeasures and MetricMeasures may be grouped when needed.<br/>A MetricDefMeasureGroup is a set of MetricDefMeasures, usually reported in the same message by the equipment or the EMS.<br/>A MetricMeasureGroup is a set of MetricMeasures, usually reported in the same message by the equipment or the EMS.<br/>For example, a server will typically report CPU related metrics in a single message. These metrics may include: Maximum CPU usage, Average CPU usage, System CPU usage and User CPU usage. <br/>Mobile RAN may group related metrics by functional aspects in a technology context such as: LTE Intra-frequency handovers, UMTS Radio Access or NodeB Utilization.<br/>Standard protocols like MTOSI or 3GPP will pack the Metric Group in a single message either the same line in a CSV file or within XML tags when the data format is XML.<br/>