IKOYI_DRIVE DOWNTILT_3G PRE AND POST REPORT_20022015

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IKOYI_DRIVE DOWNTILT_3G report was done on 20TH FEBUARY, 2015

Data was collected using TEMs investigation 9.1 with MS1 on 3G(Idle mode), MS2 on 3G(Dedicated mode) and MS3 on Data.

In this report, GSM RAN performance are described according to different RF measurements, MS Rx-Level / UE RSCP, MS Rx-Quality / UE Ec/No, HSDPA Throughput, RAN KPI’s like CDR (Dropped Calls) and Blocked Calls.

Introduction

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3G SITE DISTRIBUTION AND ROUTE PRE AND POST

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3G REPORT

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EVENT STATISTICS

3G DOWN-TILT PRE

MTN 3G CALL STATISTICS DATA

Call Initiation 27

Call Attempt 27

Call Attempt Retry 0

Call Setup 26

Call Established 26

Call End 24

Blocked Call 1

Dropped Call 2

RRC Connection 31

RRC Connection Reject 2

RRC Connection Abnormal Release 1

Radio Link Addition 300

Radio Link Addition Failure 0

Radio Link Removal 180

Radio Link Removal Failure 0

Radio Link Replacement 88

Radio Link Replacement Failure 0

CSSR 96.27%

DCR 7.69%

% Retainability Rate 92.31%

% SHO 0%

% RRC Connection Established 93.94%

3G DOWN-TILT POST

MTN 3G CALL STATISTICS DATA

Call Initiation 28

Call Attempt 28

Call Attempt Retry 4

Call Setup 28

Call Established 28

Call End 26

Blocked Call 0

Dropped Call 2

RRC Connection 41

RRC Connection Reject 2

RRC Connection Abnormal Release 0

Radio Link Addition 375

Radio Link Addition Failure 0

Radio Link Removal 200

Radio Link Removal Failure 0

Radio Link Replacement 94

Radio Link Replacement Failure 0

CSSR 100%

DCR 0%

% Retainability Rate 100%

% SHO 0%

% RRC Connection Established 95.35%

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3G RSCP RF PERFORMANCE PLOT PRE AND POST

PRE POST

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3G EcNo RF PERFORMANCE PLOT PRE AND POST

PRE POST

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COVERAGE DRIVE PRE AND POST:RF PERFORMANCE PSC PLOT

PRE POST

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HSDPA THROUGHPUT :RF PERFORMANCE PLOT PRE AND POST

PRE POST

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EVENT: Dropped call

Observation: Dropped call/quality on LG4836V due to SHO failure, and suspected feeder swap .Recommendation/Action taken: Rigger should audit site ULG4836 to confirm feeder swap, and correct.

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EVENT: Suspected swap snap shot on ULG4836

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EVENT: Dropped call

Observation: Dropped call from 11GB due to poor EcNo .Recommendation/Action taken: Improve on Quality around event area.

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3G OBSERVATION AND RECOMMENDATION

OBSERVATION:

MTN 3G downlink General coverage and quality drive was improved during post drive test.

Generally, Site U0011, U0756, and U0180 were not overshooting during time of D.T .

HSDPA throughput was improved during post drive, from the plot

Suspected swap was observed on ULG4836U.

RECOMMENDATION:

Rigger to carry out audit on ULG4836U for suspected swap correction.