Cote_D_Ivoire_Orange_RF_Optimization_Detail_Report-CocodyC2_20150324.pdf

Orange CI RF ANALYSIS AND OPTIMIZATION REPORT

ABIDJAN Cocody Cluster2 Huawei RF team

24th March 2015. All rights reserved

Orange CI Drive Test Report

Division: Abidjan Cocody

Test Route: Cocody

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Contents

INTRODUCTION .......................................................................................................................................... 3 1- FINDINGS AND RECOMMENDATIONS: ................................................................................................. 3 1.1 TEST ROUTE OVERVIEW: ..................................................................................................................... 3 1.2 MS RSCP PLOT: .................................................................................................................................... 4 1.3 MS EC/NO PLOT ................................................................................................................................... 5 1.4 MS DL INTERFERENCE PLOT: ............................................................................................................... 6 1.5 MS PSC PLOT: ...................................................................................................................................... 7 1.6 DT KPI SUMMARY ................................................................................................................................. 7 1.7 BAD PATCHES ...................................................................................................................................... 8 1.8 ACTION SUMMARY............................................................................................................................. 15 1.9 CONCLUSION ..................................................................................................................................... 16



Test Route: Cocody

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I) VOICE SERVICE TEST

Introduction

The drive test route covers Cocody cluster2 and was driven the 06th March 2015.

1- Findings and Recommendations:

1.1 Test Route Overview:



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1.2 MS RSCP Plot:



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1.3 MS Ec/No Plot



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1.4 MS DL interference plot:



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1.5 MS PSC Plot:

1.6 DT KPI Summary

KPI (2G) Short Call

Outgoing Call Setup Success Rate (CSSR) 96.88

Call Drop Rate (CDR) 1.62

Handover Success Rate (HOSR) 100

RSCP (dbm) >= -95dbm and EcIo>= -12 72.13



Test Route: Cocody

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1.7 BAD PATCHES

A) BAD PATCHE 1



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Events: Bad patch (Poor quality)

Causes: KAMENA Sector2 overshooting

Recommendations: Adjust the downtilt of KAMENA_2200-2 from 4 to 8; the downtilt of

OSCAR_2200-1 should be change from 4 to 6, ALLABRA_2200-1&2 from 6 to 8,

FLORALIE_2200-3 from 5 to 8, COTEAUX_2200-2 from 5 to 7, EMORAUDE_2200-2 from 3 to

6, ANOMA_2200-1 from 7 to 9, VEGAS_2200-1 from 8 to 9, VEGAS_2200-2 from 4 to 7,

STE_FAMILLE_2200-2 from 9 to 10and BONHEUR_2200-2 from 2 to 4.

Add the following cells to ALLABRA_2200-12 neighbors: ST_VIATEUR_2200-22,

SYNINFO_2200-22 and MEECI_2200-22.

BAD PATCHE 2

Events: Bad patch (Poor Coverage)

Causes: Pilot pollution and poor coverage

Recommendations: Adjust COTEAUX_2200-3 tilt from 5 to 8 to make it dominate; modify

ALUKO_2200-1 and SYNINFO_2200-2 tilt from 6 to 8;

Down tilt Anono_2200-11 by 3 degree and down tilt Anoma_2200-11 by 2 degree.

B) BAD PATCHE 3



Test Route: Cocody

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Events: Bad patch (Poor Quality)

Causes: Pilot Pollution

Recommendations: CAMELIA_2200-3 tilt should be adjust from 6 to 8

Add AKOUEDO_2200-31 to AKOUEDO_2200-21 as neighbor cell.

Downtilt by 2 ZEPHIR_2200-2&3, MPOUTO_2200-1, BERVERLY_2200-1&2

Down tilt Akouedo_2200-21 and Akouedo_2200-31 by 1 degree

C) BAD PATCHE 4


Causes: Overshooting, pilot pollution

Recommendations: Down tilt ST_ELYSEE_2200-12 and FROBEL_2200-12 by 2degree

Add Akouedo_2200-32 to Riviera_Extension_2200-22



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BAD PATCHE 5


Causes: Overshooting and pilot pollution

Recommendations: Increase ZEPHIR_2200-32 power by 2dbm

Downtilt TERRAFRIC_2200-2, OHINENE_2200-1 and SAMARIT_2200-1 by 2.

D) BAD PATCHE 6

Events: Bad patch (Bad quality)

Causes: Non dominate and overshooting

Recommendations: The Downtilt of KAMENAN sector2 and ANOMA sector1 can solve the

problem



Test Route: Cocody

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E) BAD PATCHE 7


Causes: Overshooting

Recommendations: Increase INJS_2200-2 electrical tilt by 2

F) BAD PATCHE 8


Causes: Pilot pollution

Recommendations: Change the downtilt of OSCAR_2200-2&3 from 4 to 6. Decrease the pilot

power of RIVIERA_2200-22 and RIVIERA_2200-21 by 3dB.



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G) BAD PATCHE 9


Causes: Overshooting

Recommendations: GANDOUR_2200-1 downtilt should be set to 8 instead of 6 and

MESANO_2200-1 mechanical tilt set to 2.

H) BAD PATCH10

Events: Bad patch (Poor coverage)

Recommendations: Sector 3 of COTEAUX will improve the coverage after the downtilt.



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I) BAD PATCH11

Events: Bad patch (Poor coverage)

Recommendations: The power of Zephir Sector 3 will improve the coverage.



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1.8 Action Summary

ACTION POINT

SITE NAME Action Owner Time Line

Status

A KAMENA

Adjust the downtilt of KAMENA_2200-2 from 4 to 8;

the downtilt of OSCAR_2200-1 should be change from

4 to 7, ALLABRA_2200-1&2 from 6 to 8,

FLORALIE_2200-3 from 5 to 8, COTEAUX_2200-2

from 5 to 7, EMORAUDE_2200-2 from 3 to 6,

ANOMA_2200-1 from 7 to 9, VEGAS_2200-1 from 8

to 9, VEGAS_2200-2 from 4 to 7,

STE_FAMILLE_2200-2 from 9 to 10and

BONHEUR_2200-2 from 2 to 4.

Add the following cells to ALLABRA_2200-12

neighbours: ST_VIATEUR_2200-22,

SYNINFO_2200-22, MEECI_2200-22

Add the following cells to KAMENA_2200-22

neighbours: MEECI_2200-22, VEGAS_2200-22,

RIVIERA_SELMER_2200-12 and

RIVIERA_SELMER_2200-22.

Huawei with

Orange permission

Open

B Adjust COTEAUX

Adjust COTEAUX_2200-3 tilt from 5 to 8 to make it

dominate; modify ALUKO_2200-1 and

SYNINFO_2200-2 tilt from 6 to 8;

Down tilt Anono_2200-11 by 3 and down tilt

Anoma_2200-11 by 2.

Huawei with

Orange permission

Open

C CAMELIA

CAMELIA_2200-3 tilt should be adjust from 6 to 8

Add AKOUEDO_2200-31 to AKOUEDO_2200-21 as

neighbour cell.

Downtilt by 2 ZEPHIR_2200-2&3, MPOUTO_2200-

1, BERVERLY_2200-1&2

Down tilt Akouedo_2200-2 and Akouedo_2200-3 by 1

Huawei with

Orange permission

Open

D AKOUEDO

Add ST_ELYSEE_2200-12 and FROBEL_2200-12 to

AKOUEDO_2200-22

Add AKOUEDO_2200-32 to AKOUEDO_2200-22

Huawei with

Orange permission

Open

E ZEPHIR and TERRAFRIC

Increase ZEPHIR_2200-32 power by 2dB

Downtilt TERRAFRIC_2200-2, OHINENE_2200-1

and SAMARIT_2200-1 by 2.

Huawei with

Orange permission

Open

F INJS Increase INJS_2200-2 elctrical tilt by 2

Huawei with

Orange permission

Open

G OSCAR and RIVIERA

Change the downtilt of OSCAR_2200-2&3 from 4 to

6. Decrease the pilot power of RIVIERA_2200-22 and

RIVIERA_2200-21 by 3dB.

Huawei with

Orange permission

Open

H GANDOUR and MESANO GANDOUR_2200-1 downtilt shoud be set to 8 instead

of 6 and MESANO_2200-1 mechanical tilt set to 2.

Huawei with

Orange permission

Open

I J K



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Existing physical parameter New physical parameter

CELLS Azimuth Mech

Downtilt Elect

Downtilt Power Azimuth Mech

Downtilt Elect

Downtilt Power

KAMENA _2200-2

4

8

OSCAR _2200-1

4

7

ALLABRA_2200-1

6

8

ALLABRA_2200-2

6

8

FLORALIE_2200-3

5

8

COTEAUX _2200-2

5

7

COTEAUX _2200-3

5

8

EMORAUDE _2200-2

3

6

ANOMA_2200-1

7

9

VEGAS_2200-1

8

9

VEGAS_2200-2

4

7

STE_FAMILLE_2200-2

9

10

BONHEUR_2200-2

2

4

ALUKO_2200-1

6

8

SYNINFO_2200-2

6

8

CAMELIA _2200-3

6

8

MPOUTO _2200-1

8

10

BERVERLY _2200-1

3 3

5

BERVERLY _2200-2

2 6

4

ZEPHIR_2200-32/33

10

13 Increase power by 2dB

TERRAFRIC _2200-2

5

7

OHINENE _2200-1

4

6

SAMARIT _2200-1

5

7

INJS _2200-2

7

9

OSCAR _2200-2

4

6

OSCAR _2200-3

4

6

GANDOUR_2200-1

6

8

MESANO _2200-1

0

2

RIVIERA_2200-21/22

decrease power by 3dB

ANONO_2200-1

5

8

AKOUEDO_2200-2/3

5

6

1.9 Conclusion

The 3G network coverage is acceptable but the quality need to be improve by controlling the

downlink interference through implemention of the above recommendations. Another test will be perform after modification to confirm the result.



Test Route: Cocody

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HIGH RTWP ANALYSIS

The above trends for Agitel sector 3 shows that there is a background noise not perculiar to a frequency but to the sector itself which means we need to check for a generic source of intefernce. CONCLUSION: I suggest we have to neighbor audit for all the cells on the network one after the other to make sure there is no any missing neighbor or one way neighbor because at every missing neighbor it is seen as interference. At every interference detected by 3G network the active set will try to increase power in other to overcome this interference.

Cote_D_Ivoire_Orange_RF_Optimization_Detail_Report-CocodyC2_20150324.pdf

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