Real-world: Low throughput troubleshooting — systematic approach

Starting the Decision Tree

Low throughput is the most common complaint in 5G networks. A systematic decision tree with specific KPIs at each step ensures efficient root cause identification. Step 1 checks RF conditions: is SS-SINR above 10 dB? If not, the UE has a poor RF environment requiring coverage or interference fixes. Step 2 examines interference: if SINR is low despite good RSRP (above -100 dBm), interference is the culprit — analyze the RSRP versus SINR scatter plot. Step 3 evaluates cell loading: PRB utilization above 70% means congestion is limiting per-user throughput even with good SINR. Step 4 checks…