Lab: Optimize parameters for a degraded 5G cluster — 10 cells, 5 issues

Cluster Optimization Challenge

In this hands-on lab, you are given a 10-cell 5G NR cluster on band n78 (100 MHz, SCS 30 kHz) with five distinct performance issues identified from KPI data. Your task is to diagnose each issue, identify the responsible parameter, and apply the correct change. Issue 1: High handover failure rate (6.2%) between Cell 3 Sector 1 and Cell 5 Sector 2 — RLF reports show "too late" failures with serving RSRP at -118 dBm before HO triggers. Current A3 offset is 4 dB, TTT is 320 ms. Issue 2: High RACH failure rate (8.5%) on Cell 7 Sector 3 — Msg1 preamble detection is only 82% while Msg2-4 rates…