Systems, methods and devices for determining key performance indicators using inferential statistics

An network monitoring node, comprising:

• one or more network interfaces adapted to communicate in a communication network;
• a processor adapted to execute one or more processes;
• and
• a memory configured to store a process executable by the processor, the process when executed by the processor causes the processor to:
• monitor a plurality of messages for a network interface in a communication network;
• determine a Mobile Terminating (MT) count for MT calls for User Equipment (UE) from at least one message of the plurality of messages;
• determine a Mobile Originating (MO) count for MO calls for the UE from at least one message of the plurality of messages;
• define an inferred MT ratio based on the MT count and the MO count;
• apply the inferred MT ratio to at least one of a Circuit Switched FallBack (CSFB) idle mode count that indicates a number of successful CSFB calls for UE in an idle mode and a CSFB active mode count that indicates a number of successful CSFB calls for UE in an active mode to yield an estimated total number of CSFB idle mode successes and an estimated total number of CSFB active mode successes, respectively;
• assign each of the estimated total number of CSFB idle mode successes and the estimated total number of CSFB active mode successes to one or more Key Performance Indicators (KPIs);
• and
• provide the one or more KPIs to a display to cause the display to show the one or more KPIs to a user.

A tangible, non-transitory, computer-readable media having software encoded thereon, the software, when executed by a processor, operable to:

• monitor a plurality of messages for a network interface in a communication network;
• determine a Mobile Terminating (MT) count for MT calls for User Equipment (UE) from at least one message of the plurality of messages;
• determine a Mobile Originating (MO) count for MO calls for the UE from at least one message of the plurality of messages;
• define an inferred MT ratio based on the MT count and the MO count;
• apply the interred MT ratio to at least one of a Circuit Switched FallBack (CSFB) idle mode count that indicates a number of successful CSFB calls for UE in an idle mode and a CSFB active mode count that indicates a number of successful CSFB calls for UE in an active mode to yield an estimated total number of CSFB idle mode successes and an estimated total number of CSFB active mode successes, respectively;
• assign each of the estimated total number of CSFB idle mode successes and the estimated total number of CSFB active mode successes to one or more Key Performance Indicators (KPIs);
• and
• provide the one or more KPIs to a display to cause the display to show the one or more KPIs to a user.