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Cluster DT report

For 3G Tunisiana Network

Revision Date Name

Cluster 6 U9001st run Troubleshooting

18/06/2012 Sadok Ben Ali

     

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Executive summary (1/2)

General Cluster Position and DT route KPI Overview: Cell Level Availability DT Test DT configuration KPI Summary Scanner:

1. EcNo & RSCP Graph

2. EcNo Distribution

3. RSCP Distribution

4. Best Server Short call:

1. Short Call statistics

2. EcNo Distribution

3. RSCP Distribution

4. Best Server

5. Tx Power

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Executive summary (2/2)

DT Test Long Call:

1. Long Call Statistics

2. EcNo Distribution

3. RSCP Distribution

4. Best Server

5. Tx Power Conclusion

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DT Route

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Drive test Configuration

• Drive Test tool : Nemo Outdoor• Processing tool : Actix Analyzer 4 (release April 2011) .• Drive test process:

Cluster Run1 :– MS1: CS Short call (60 sec, 15 sec between calls)– MS2: CS Long Call– Scanner

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CELL availabilty

Period start time PLMN name RNC name WBTS name WBTS ID WCEL name WCEL ID a Cluster layer Cell avail

########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F01 7 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F02 8 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F03 9 TUN4015 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F01 7 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F02 8 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F03 9 TUN4208 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F01 7 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F02 8 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F03 9 TUN4015 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F01 7 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F02 8 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F03 9 TUN4208 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F01 7 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F02 8 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F03 9 TUN4015 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F01 7 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F02 8 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F03 9 TUN4208 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F01 7 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F02 8 TUN4015 cl6 F0 0.00########## PLMN RNCCHR01 3G_Airport 4015 TUN4015F03 9 TUN4015 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F01 7 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F02 8 TUN4208 cl6 F0 0.00

########## PLMN RNCCHR01 3G_CharguiaII 4208 TUN4208F03 9 TUN4208 cl6 F0 0.00

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2 sites are not on air TUN4015 & TUN4208

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Cluster DT report

Scanner

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Scanner RSCP

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RSCP in cluster 6 is very good except the area where TUN4208 & TUN4015 wich are not on air

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RSCP Histogram

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Range CPICH_Scan_RSCP_SortedBy_EcIo_0 Share< -104.00 0 0.00%-104.00 to -95.00 0 0.00%-95.00 to -83.00 148 1.05%-83.00 to -77.00 950 6.73%-77.00 to -62.00 5590 39.59%> -62.00 7433 52.64%

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Scanner EcNo

There is a general degradation in EcNo overall the cluster due to Pilot Pollution and near 2 sites which are not on air

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EcNo Histogram

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Range CPICH_Scan_RSCP_SortedBy_EcIo_0 Share< -18.00 0 0.00%-18.00 to -14.00 3 0.02%-14.00 to -12.00 43 0.30%-12.00 to -8.00 2645 18.73%-8.00 to -5.00 5893 41.73%> -5.00 5537 39.21%

More than 18% of the cluster has low than -8dB which bad, There is some sites still not on air and some pilot pollution

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Best Server

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Scanner – Pilot Pollution

1

1. This part of cluster has 3 site on Air, pilot pollution will not deeply analyzed. Sites TUN4271 sector1 and Tun4029 sector2 are clearly overshoot in the zone.

2. TUN4208 and TUN4015 not on air3. TUN4140 sector1 is overshoot in this zone4. There are small overshoots for nearby Site requires small DownTilt. TUN4076 secotr3,

TUN4305 sector1 overshoot from faraway. TUN4297should be checked secotr3 overshoot not on its antenna direction

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3

4

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Actions summury

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SITES SectorSolution1: DownTilt

Alternative Solution :CPICH Power reduction

TUN4271 TUN4271_1 DT 6 2

TUN4029 TUN4029_1 DT 6 2

TUN4179 TUN4179_2 DT 6 2

TUN4271 TUN4271_2 DT 6 2

TUN4062 TUN4062_1 DT 6 2

TUN4140 TUN4140_1 DT 6 2

TUN4076 TUN4076_3 DT 6 2

TUN4305 TUN4305_1 DT 6 2

TUN4297 Secto3 Check

Those Cells are the main overshooting cells in Cluster6, we recommend the physical solution

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Cluster DT report

Short Call

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Short Call statistics

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Events ValuesNumber of calls 400Number of calls failed 3Number of Calls dropped 0Call Setup Success Rate CSSR 99.5%Call Drop Rate CDR 100%

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EcNo Distribution

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RSCP Distribution

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Best Server

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TX Power

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TX power is in good range , except when the UE is connected to overshooting cell

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Events

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Event Analysis

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Events ID Analysis ACTIONCall Setup Fail 1 Normal release from Core during Radio Setup phase No Action

Call Setup Fail 2

Fail due to Uplink TX power and 21dbm and SIR=5.5, UE is connected to overshoot site because nearby Site is not on air

Site Will be on Air, there is design action for TUN4271

Call Setup Fail 3

Fail due to Uplink TX power and 19dbm and SIR=5.5, UE is connected to overshoot site because nearby Site is not on air

Site Will be on Air, there is design action for TUN4271

Call Drop 1 Is not real Drop, UE is hanging, Actix consider as DROP No Action

Call Drop 1 Is not real Drop, UE is hanging, Actix consider as DROP No Action

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Cluster DT report

Long Call

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EcNo Distribution

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RSCP Distribution

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Best Server

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TX Power

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Events

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2

3

4

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Events Analysis

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Events ID Analysis ACTIONCall Drop 1 Drop due CN Disconect: Protocol Error No ActionCall Drop 2 Drop due CN Disconnect: Protocol Error No Action

Call Drop 3Call drop due to low EcNO UE was connected to overshooting site TUN4062 because nearby site is not on air

DonTilt of TUN4062 sector :action design, Also Once TUN4015 will be on air issue will be solved

Call Drop 4 UE was Connected to TUN4297 which is overshooting Check Site TUN4297 sector 3 is overshooting in the back side

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Actions Summary

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SITES SectorSolution1: DownTilt

Alternative Solution :CPICH Power reduction

TUN4271 TUN4271_1 DT 6 2

TUN4029 TUN4029_1 DT 6 2

TUN4179 TUN4179_2 DT 6 2

TUN4271 TUN4271_2 DT 6 2

TUN4062 TUN4062_1 DT 6 2

TUN4140 TUN4140_1 DT 6 2

TUN4076 TUN4076_3 DT 6 2

TUN4305 TUN4305_1 DT 6 2

TUN4297 Secto3 Check