5G - LTE Parameter Mismatch - SOlution using L3 signalling analysis.pdf

5G parameter missmatch on ENDC calls, after solution calls are enabled. SOlution using L3 signalling analysis

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Troubleshooting: 5G
•Scenario: about VoLTE Service. Not accessible from 5G
Distribution for all last cause in Drops and Blocks
Top offenders for all Cause
Top offenders (cells and Freq) by Interaction with other procedure

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Example of Failure: Call Flow

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5G CallFailedprocedure.

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Change Proposal
After analyzing the call traces and the network configuration related to the VoLTE problems with 5G capable UEs we found a parameter mismatch
Proposal Configuration
•In all LTE anchor nodes:
MO: ENodeBFunction
Parameter: endcDataUsageReportEnabled
Value: TRUE
•In all NR nodes :
MO: GNBCUUPFunction
Parameter: endcDataUsageReportEnabled
Value: TRUE
Current Configuration
•In all LTE anchor nodes:
MO: ENodeBFunction
Parameter: endcDataUsageReportEnabled
Value: TRUE
•In all NR nodes :
MO: GNBCUUPFunction
Parameter: endcDataUsageReportEnabled
Value: TRUE
The secondary RAT data usage reporting functionality is activated by setting the following attributes to true:
•The ENodeBFunction.endcDataUsageReportEnabled attribute on the Master Node.
•The GNBCUUPFunction.endcDataUsageReportEnabled attribute on the Secondary Node.
Note: If secondary RAT data usage reporting is activated on only the Master Node, but not on the Secondary Node,
the EN-DC setup cannot be completed.