Drive test guides for RF engineers

Use the trace to narrow the next check

A drive test is more useful when the measurements answer a concrete question. Is the serving signal weak? Is signal quality poor despite strong power? Does the result change with the cell, the route, the time of day or the device? The guides below are arranged around those decisions.

They are not a substitute for operator procedures, network counters or a site safety process. They are intended to help technicians and RF engineers record a clearer observation before they escalate, plan a visit or make a configuration decision.

Start with radio measurements

• RSRP, RSRQ and SINR: Read Them Together in Drive Tests — use strength and quality together instead of treating one number as the diagnosis.
• RxLev and RxQual in GSM Drive Tests — a practical reference for legacy GSM signal and quality readings.
• GSM Bit Error Rate: Interpretation and Troubleshooting — when error behaviour needs to be recorded alongside the route and cell context.

When the signal looks good but data does not

Strong serving power does not prove that the complete user path is healthy. The next checks depend on whether quality is degraded, resources are shared, MIMO behaviour has changed or the limitation sits beyond the air interface.

• Good RSRP, Bad Throughput: What to Check First — a field order for separating quality, cell load, MIMO and transport causes.
• GSM Co-channel Interference: Field Detection and Mitigation Guide — how to recognise a pattern that merits an interference or overlap investigation.
• GSM Drive Test Checklist for Field Engineers — the basic context worth collecting before a handover or escalation.

Useful tools alongside the guides

Use the guides to decide what to record, then use the relevant tool to keep the field work consistent.

• GSM Drive Test for logging serving-cell, measurement and location context on Android.
• GSM Azimuth Checker for checking a physical antenna orientation against its design value.
• GSM Coverage Planner for a first coverage estimate before or after a route is planned.

How to use this collection

Pick the guide that matches the observation, not the technology label. If quality is the question, begin with the measurement guide. If the complaint is slow data with a healthy-looking serving signal, begin with the throughput workflow. When the problem is repeatable, attach the route, time, device and serving-cell context to the result. That is what makes the next investigation faster.

For the sourcing and correction approach behind these guides, read the GSM Field Suite editorial method.