Analysis
Customer complaint low speed ( Complaint area already have IBC site BKK3021) Tower office floor 16.
From DNA trace found customer camp on E18-BKK2996A (Macro).
From walktest result found poor LTE coverage and also 3G U21.
3G U08 coverage is normal.
Both E18 & U21 BKK3021 still on air but too weak coverage , walktest below antenna RSCP -102 dBm.
No alarm found , No any incident related to BKK3021.
VSWR normal 1.19 , UL RSSI -103 dBm.
Way forward
Suspect hardware issue please help to check DAS of BKK3021.