What This Page Covers
Campus 5G coverage validation measures actual SS-RSRP and SS-SINR at device operating locations using a live 5G NR connection. It covers indoor walk test methodology (without GPS), dead zone identification, SS-RSRP threshold interpretation per 3GPP TS 38.133, and heatmap generation for acceptance sign-off.
Campus 5G: Coverage Validation
Coverage simulation and walk-through demos are not coverage validation. Validating campus 5G coverage means measuring SS-RSRP and SS-SINR at every location where a device will operate — machine stations, control rooms, loading docks, stairwells — and confirming the measurements meet acceptance thresholds. Only real measurement data, georeferenced on the floor plan, can close the coverage acceptance loop.
5G NR SS-RSRP Reference Levels
Per 3GPP TS 38.133 §10.1.6.1. Values are UE-measured SS-RSRP in dBm on a single antenna port. Actual usable range depends on device receiver sensitivity, UE category, and MIMO configuration.
| SS-RSRP (dBm) | Signal Level | Expected Service |
|---|---|---|
| > -80 dBm | Excellent | Peak throughput, high MCS, URLLC latency target met |
| -80 to -95 dBm | Good | Good throughput, eMBB and URLLC usable |
| -95 to -105 dBm | Acceptable | Basic data service, eMBB acceptable, URLLC marginal |
| -105 to -115 dBm | Poor | Registration possible, low throughput, URLLC not viable |
| < -115 dBm | No service | 5G registration fails or falls back to 4G |
Indoor Walk Test Procedure
Load the building floor plan into the indoor walk test module. Define a test grid covering all device operating locations: machine stations, aisle intersections, control rooms, restrooms, stairwells, and loading areas. The grid spacing depends on the deployment: 5 m for factory floors, 10 m for warehouse corridors, 3 m for dense office spaces. Confirm the 5G NR connection is active (PDU session established) before starting.
Walk through the deployment area following the test grid. At each grid point, mark the position on the floor plan and record: SS-RSRP (dBm), SS-SINR (dB), PCI, serving beam index (for mmWave deployments), and throughput (optional). Hold the device at the height of the target device (machine-mounted sensor at 0.5 m, handheld device at 1.2 m). Document any obstructions present at measurement time.
After completing the walk, generate the SS-RSRP heatmap overlaid on the floor plan. Identify three zones: (1) compliant zones (SS-RSRP above acceptance threshold at all points), (2) marginal zones (SS-RSRP between threshold and threshold minus 5 dB — requires additional measurement under load), (3) dead zones (SS-RSRP below minimum usable level). Dead zones require gNB repositioning, additional small cells, or relay nodes.
At locations where two gNBs have similar signal levels (handover boundary areas), record the PCI of the serving cell. A device oscillating between two gNBs at a machine station position indicates a handover boundary conflict that must be resolved by adjusting cell coverage (antenna tilt, transmit power, or neighbor relations).
Repeat the walk test on each floor of the building independently. Do not assume coverage measured on one floor predicts coverage on adjacent floors. 5G NR mid-band signal penetration through reinforced concrete floors is significantly attenuated. Each floor requires its own heatmap and its own pass/fail assessment against acceptance thresholds.
Indoor 5G Coverage Challenges
Reinforced concrete walls add 15–30 dB attenuation per wall at 3.5 GHz. Glass curtain walls add 3–8 dB. Metal structures create reflections that produce multi-path interference patterns.
5G NR mid-band (n78) penetrates floors less effectively than 4G 800 MHz. Multi-story buildings require per-floor validation — ground floor measurements do not predict upper floor coverage.
In factory environments, large metal machines (CNC, stamping presses) create RF shadows. The 5G coverage map must be created with production machines in their operating positions, not in an empty hall.
Wi-Fi 6E (6 GHz band) does not interfere with 5G NR n78 (3.5 GHz). However, other private 5G deployments nearby (shared spectrum or CBRS) can produce inter-operator interference visible as SS-SINR degradation.
HiCellTek for Campus 5G Coverage Validation
GPS-independent indoor coverage mapping with floor plan overlay. Mark measurement points manually or via BLE beacon positioning. Generates SS-RSRP and SS-SINR heatmaps georeferenced on the floor plan. Per-floor measurement with multi-floor project support.
Real-time SS-RSRP, SS-SINR, PCI, beam index, and CQI from the active 5G NR connection. Continuous logging at configurable intervals (100 ms to 5 s) for high-resolution coverage maps in dense deployments.
GPS-correlated outdoor coverage mapping for campus exterior areas (parking, logistics yards, loading docks). Produces georeferenced KPI maps exportable to GIS (CSV/KMZ).
Coverage heatmap export (PNG/SVG) on floor plan. CSV with per-point SS-RSRP, SS-SINR, PCI, and timestamp. Excel KPI summary with pass/fail per measurement point against acceptance threshold. Acceptance sign-off package ready.
Frequently Asked Questions
A coverage survey is performed before deployment — it predicts where 5G coverage should be based on propagation models and planned antenna positions. A coverage validation is performed after deployment on the live network — it measures actual signal levels (SS-RSRP, SS-SINR) at the planned device locations and confirms they meet the acceptance thresholds. Validation uses real measurement data from an active 5G SA connection, not simulation. Only validation data can be used for acceptance sign-off.
The primary measurements for 5G NR indoor coverage validation are: SS-RSRP (SS Reference Signal Received Power) — the signal level indicator, typically reported in dBm per 3GPP TS 38.133; SS-SINR (SS Signal-to-Interference-plus-Noise Ratio) — the signal quality indicator in dB; and PCI (Physical Cell Identity) — to confirm the serving cell is the correct gNB for each location. For dense indoor deployments, SS-RSRQ (Reference Signal Received Quality) and CQI (Channel Quality Indicator) provide additional QoS context.
Indoor spaces do not have GPS signal. Indoor coverage maps are created using floor plan overlay and manual waypoint marking during the walk test. The engineer walks through the space, marks each measurement point on the floor plan image (by clicking on the map at the current physical location), and the application records the RF measurements at that timestamp. The result is a georeferenced heatmap of SS-RSRP overlaid on the building floor plan. BLE beacon-based positioning is an alternative for larger spaces requiring continuous automated positioning.
Acceptable SS-RSRP for indoor 5G NR coverage depends on the deployment frequency band and the required service: for FR1 mid-band (n78, 3.5 GHz), a threshold of -100 dBm typically supports basic data service and 5G registration. For URLLC applications requiring low latency, a higher target (> -90 dBm) is recommended to maintain high MCS and low scheduling latency. For mmWave (FR2, n258/n260), indoor coverage is shorter-range and signal levels vary more sharply; acceptance thresholds are typically defined per coverage area rather than per absolute level.