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Case studies

Case studies

Three typical investigations, replayed in AKCELL Analyzer on demonstration data: real screenshots of the tool at each step, measurements supporting each conclusion.

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5G SA · n78Drive testRF optimization

Degraded 5G throughput on an urban route: three causes, three actions

Interference from an overshooting cell, rank stuck at 1 due to a faulty RF branch, a coverage edge: low-throughput cause analysis separates the three and quantifies the gain from the corrections.

Median DL throughput over the route
220becomes424 Mbit/s
DL layers on the repaired sector
1becomes4
Pilot pollution alerts
6becomes0
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LTE · band 20Indoor · DASUplink noise rise · PIM

Uplink noise rise on a shared DAS: diagnosing passive intermodulation

Excellent downlink coverage, an uplink that collapses at times: three tests at a stationary point and one correlation are enough to identify passive intermodulation before any technician is dispatched.

UL throughput, simultaneous test
1.0becomes15.5 Mbit/s
PUSCH transmit power
23becomes11 dBm
Correlation of DL throughput with UL power
0.93becomes−0.37
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5G SA · n78Indoor · high floorDominance · pilot pollution

High floor: restoring 5G DAS dominance over the macro cells

On the 14th floor, the indoor cell does not dominate at the façades: the floor plan colored by SINR, the delta to the best neighbor and the cell inventory identify the macro cells involved, then validate the added antennas.

Median SINR on the floor
7becomes20 dB
Median DL throughput
160becomes714 Mbit/s
Pilot pollution alerts
2becomes0
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01Method

Investigation workflow

  1. 01

    Symptom

    What users experience, translated into indicators and thresholds.

  2. 02

    Data

    The measurement protocol: devices, routes, tests, cell database.

  3. 03

    Attribution

    Low-throughput causes, events, and the areas and cells involved.

  4. 04

    Verification

    Correlation, signaling and the cell inventory confirm or rule out the hypothesis.

  5. 05

    Correction

    Action targeted at the root cause, not at the symptom.

  6. 06

    Verification

    Re-measurement after correction, compared with the initial measurement.

02Video

Video of the three case studies

Each case, step by step, on real AKCELL Analyzer screens, with chapters. Narration in French, with English subtitles.

3 min 44 s

Video · 3 min 44 s

Case studies: three RF investigations

Degraded 5G throughput on an urban route, uplink noise rise on a shared DAS, pilot pollution on a high floor: three investigations replayed in AKCELL Analyzer, from symptom to verification after correction.

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Trace analysis

Analysis of your traces by an RF engineer: root cause, recommendations and verification after correction.

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