E**** VoLTE parameter explanations

[Bohemian]

Hello,
can anybody share what are the use of below parameters for VoLTE perspective and when these to modify.

pdcchOuterLoopInitialAdjVolte
pdcchOuterLoopUpStepVolte
pdcchSinrChangeThresholdVolte
pdcchTargetBlerVolte
ulHarqVolteBlerTarget