5G NR coverage testing methodology: complete field guide

5G NR (New Radio) coverage testing requires a methodology adapted to this technology’s specifics: massive beamforming, diverse frequency bands (FR1 sub-6 GHz and FR2 mmWave), NSA and SA architectures, and new radio KPIs. This guide presents the complete field methodology for conducting reliable and actionable 5G NR coverage tests, from planning to results delivery.

Fundamental differences from LTE coverage testing

The transition from 4G LTE to 5G NR introduces significant methodological changes:

Beamforming and SSB

In LTE, the reference signal (CRS) is broadcast omnidirectionally. In 5G NR, synchronization signals (SSB — Synchronization Signal Block) are transmitted via directional beams. Each cell can emit up to 64 SSB beams in FR2 and 8 in FR1.

Consequence for field testing: coverage is no longer uniform within a cell. A point may have excellent SSB-RSRP on one beam and poor signal on another. The test must capture the best beam at each measurement point.

Two frequency ranges

• FR1 (sub-6 GHz): bands from 600 MHz to 6 GHz — propagation similar to LTE, range of several kilometers
• FR2 (mmWave): bands from 24 GHz to 52 GHz — range limited to a few hundred meters, highly sensitive to obstacles

The methodology differs significantly between FR1 and FR2.

NSA vs SA architectures

• NSA (Non-Standalone): 5G NR relies on an LTE anchor (PCell). LTE anchor quality directly impacts 5G performance
• SA (Standalone): 5G NR operates autonomously. Testing focuses exclusively on NR KPIs

5G NR coverage KPIs

SSB-RSRP (SS Reference Signal Received Power)

SSB-RSRP measures the received reference signal power on SSB Resource Elements. It is the primary 5G NR coverage indicator.

SSB-RSRP range	Quality	Field impact
> -80 dBm	Excellent	Maximum throughput, reliable handover
-80 to -90 dBm	Good	Normal service
-90 to -100 dBm	Fair	Reduced throughput, risk of NR loss
-100 to -110 dBm	Poor	Coverage edge, fallback to LTE in NSA
< -110 dBm	No coverage	No NR service

SSB-SINR (SS Signal to Interference plus Noise Ratio)

SSB-SINR measures signal quality relative to noise and interference. It is the determining indicator for throughput.

SSB-SINR range	Quality	Expected modulation
> 20 dB	Excellent	256QAM
13 to 20 dB	Good	64QAM
0 to 13 dB	Fair	16QAM
-5 to 0 dB	Poor	QPSK
< -5 dB	Bad	No NR demodulation

SS-RSRQ (SS Reference Signal Received Quality)

SS-RSRQ combines signal power and cell load. It is particularly useful for evaluating quality in dense areas.

SS-RSRQ range	Quality
> -10 dB	Excellent
-10 to -13 dB	Good
-13 to -15 dB	Fair
< -15 dB	Poor

For detailed definitions of these indicators, see our RSRP/RSRQ/SINR calculator and our technical glossary.

Test preparation

UE selection and configuration

The test device must support the 5G NR bands deployed on the target network. Configuration is critical:

• Band lock: force the UE onto the NR band under test (n78, n77, n28, etc.)
• Network mode: NSA or SA depending on the deployed architecture
• Chipset: prefer Qualcomm chipsets (Snapdragon 8 Gen 2/3) for rich diagnostic messages
• Root/diagnostic access: required to access Layer 3 messages and detailed radio measurements
• Measurement application: a tool like HiCellTek enables real-time NR KPI capture on Android smartphones

See our product page for available 5G NR measurement capabilities.

Route design

The test route must systematically cover the target area:

For outdoor tests (drive test):

• Cover all main and secondary roads in the area
• Constant speed between 30 and 50 km/h (to ensure sufficient measurement density)
• Include major highways, commercial areas, residential zones
• Plan a pass near each 5G NR site

For indoor tests (walk test):

• Cover each floor of the building
• Measure in critical areas: offices, meeting rooms, corridors, elevators
• Walk at constant pedestrian speed (~4 km/h)
• Use a floor plan for indoor geolocation

GPS calibration and synchronization

• Verify GPS fix before starting the test (accuracy < 5 m)
• Synchronize the measurement tool’s timestamp with GPS
• For indoor testing, use an alternative positioning system (floor plan, BLE beacons)

Test execution

Parameters to capture

At each measurement point (typically every 0.5 to 1 second), the following parameters must be recorded:

NR radio KPIs:

• SSB-RSRP (serving cell + N best neighbors)
• SSB-SINR
• SS-RSRQ
• SSB Index (beam ID)
• NR-ARFCN (frequency)
• PCI (Physical Cell Identity)
• Band indicator (n78, n77, etc.)

LTE radio KPIs (in NSA):

• RSRP, RSRQ, SINR of the anchor cell
• Anchor PCI and EARFCN
• LTE handover events

Context data:

• GPS position (latitude, longitude, altitude)
• Timestamp
• Travel speed
• Active technology (NR SA, NR NSA, LTE, UMTS)

Test conditions

• Time period: normal network load hours (10 AM - 6 PM in urban areas)
• Weather: note conditions (rain affects mmWave)
• Network traffic: ideally, perform a test in idle mode (pure coverage) and a test in connected mode (with data transfer)
• Repetition: perform at least 2 passes on the same route to verify reproducibility

Post-processing and analysis

Summary indicators

The coverage report must present the following indicators:

KPI	Coverage target	Calculation method
% area with SSB-RSRP > -100 dBm	> 95% (outdoor FR1)	Grid interpolation
% area with SSB-SINR > 0 dB	> 90%	Grid interpolation
% samples on NR	> 85% (NSA)	NR / total ratio
Average NR DL throughput	Per SLA	Descriptive statistics

Mapping

Results must be represented on georeferenced maps with standardized color coding:

• SSB-RSRP: green (> -90), yellow (-90 to -100), orange (-100 to -110), red (< -110)
• SSB-SINR: green (> 13), yellow (0 to 13), orange (-5 to 0), red (< -5)

Problem area identification

Areas identified as problematic must be classified by type:

• Coverage hole: SSB-RSRP < -110 dBm over an extended area
• Interference zone: good RSRP but SINR < 0 dB
• Handover zone: frequent NR connection losses
• Fallback zone: systematic return to LTE in NSA

Reporting

The final deliverable must contain:

1. Executive summary: overall coverage rate, key findings
2. Methodology: UE used, route, conditions, parameters
3. Coverage maps: SSB-RSRP, SSB-SINR, active technology
4. KPI statistics: CDF distributions, averages, percentiles
5. Problem areas: list, location, preliminary diagnosis
6. Recommendations: proposed corrective actions (tilt adjustment, site addition, beamforming optimization)
7. Raw data: exportable measurement files (Excel, CSV, QMDL)

For 5G NR measurement tools on Android smartphones with multi-format export, see our diagnostic suite. Our glossary details all technical terms used in this article.