Hello,
I think the equal (almost) parameter in LTE is preambleInitialReceivedTargetPower
Besides you can think of slightly increasing PZeronominal power as well
I had same issue in 3G but what I have done was playing with Sratsearch and I made it harder to reselect from 3G to 2G and it caused remark improvement on RRC establishment success rate. So I suggest to think of that as well
besides how is the reselection priority ? do you have problem on the RAT/Frequency with highest priority ? ( you can have 2 LTE carriers in different band)
I think the issue is due to UEs which moved out of LTE and they can't answer to RRC connection Setup... to make sure about it choose the worst cell and disable reselection to other RAT
BR
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