Case studyTypical scenario · demonstration data5G SA · n78Drive testRF optimization

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

5G SA drive test, n78 band (100 MHz), 4.5 km urban route, continuous downlink transfer.

Verification

Before/after comparison

KPI	Before	After
Median DL throughput over the route	220 Mbit/s	424 Mbit/s
Median SINR, overshoot segment	−1.2 dB	+4.2 dB
Median DL throughput, overshoot segment	29 Mbit/s	66 Mbit/s
DL layers, sector 121	1	4
Median DL throughput, sector 121	209 Mbit/s	680 Mbit/s
Pilot pollution alerts	6	0

Typical scenario replayed in AKCELL Analyzer on demonstration data; the values are those computed by the tool on these sessions.

Case studies

Other case studies

LTE · band 20
Indoor · DAS

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

5G SA · n78
Indoor · high floor

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