The event structure is changed in comparison to the one presented in 3GPP technical specifications. The 3GPP structure is enhanced to provide support for efficient transport.
+Definitions for the **perf3gpp** domain are stored in Perf3gppFields.proto and MeasDataCollection.proto, listed below:
+
+.. literalinclude:: Perf3gppFields.proto
+ :language: protobuf
+
+.. literalinclude:: MeasDataCollection.proto
+ :language: protobuf
+
Selecting Complimentary fields for population of **perf3gpp** event
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^