Orange_DT Report 20141031

8/10/2019 Orange_DT Report 20141031

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HUAWEI TECHNOLOGIES CO., LTD.

Orange-Cote DT Report


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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 2

Coverage Overview

Coverage-3 GCoverage-GU DualRF Mode-G+U

Coverage evaluation

1. Subscribe should camp in 3G while in Dual Mode, but it always camped in 2G In Spot 1 area(Macory),

tested the 3G only mode and found the root cause is due to 3G Quality issue(present in next page).

2. In Spot 2 (Noth ABOBO) ,Coverage is no good both 2G and 3G ,new site was recommended .


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Coverage Overview

2G TA Distribution2G LAC Distribution

Coverage evaluation

1. Combing the LAC &TA&Island distribution ,we found lots of overshooting cells in 2G such as spot 3&spot4&spot5, generally it sho

As per the above figure, it obvious showed that the interlaced LAC caused by the unreasonable TA. 2G RF optimization service sh

2. 3G RF optimization Service was recommended due to band Pilot pollution issue(present in next page).


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Quality Overview

Quality Ec/Io-3GCoverage-GU DualRF Mode-G+U

Quality evaluation

1. In Spot 1 area(Macory) and Spot3 area(Cocody and Noth Plateau), 3G Quality and DL Interference is so bad and the root cause is

thats why subscribe always handover to 2G. Should implement RF optimization service in Abidjan.

Pilot pollution-3G


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Parameter evaluation2G-RLT (Radio link timeout)

2G Parameter evaluation:

A. Almost 6.9% 2G-RLT (Radio link timeout)

is less than 20. it was suggested to 24 or

36.

B. Its possible to cause the drop call while

in less timeout, page 8 will present the

drop call case which caused by the RLT

issue in 2G Cell ID=34982,.


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Event Map

3G Event 2G

1. Root cause of Drop call

A. Coverage issue

B. Interference issue

C. Handover issue

D. Parameter issue

2. Root cause of Call failure

A. Coverage issue

B. Interference issue


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KPI Summary

KPI Value

GSM Only

Call Setup Success Rate (Total)(%) 90.76%( 432/(44+ 432))

Call Drop Rate (Total)(%) 1.85%( 8 / 432)

HO Success Rate (%) 98.37%( 1996 / (1996 + 33))

UMTS Only

Call Setup Success Rate (%) 98.80%( 494 / (494+6))

Call Drop Rate (%) 2.43%( 12 / 494)

SHO Success Rate (%) 100.00%( 11561 / (11561 + 0))

Dual-Mode

UMTS

Outgoing Call Setup Success Rate(%) 99.12%( 451 / (451+4))

Call Drop Rate(%) 1.77%( 8 / 451)

SHO Success Rate(%) 99.99%( 7422 / (7422 + 1))

GSM

Call Setup Success Rate(Total)(%) 100.00%( 67/(0+ 67))

Call Drop Rate(Total)(%) 5.97%( 4 / 67)

HO Success Rate(%) 99.05%( 835 / (835 + 8))


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Event Analysis

Drop call: coverage and handover issue

2. 3G Cell PSC=157 UARFCN=10062, the coverage is so worse but cannot trigger the hand over to Cell PSC=156 UARFCN=10662. sho

neighbor relationship.


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Event Analysis

Drop call: Weak 2G parameter setting issue

3. Drop call in 2G Cell ID=3521 due to 2G Co-BCCH parameter setting issue ; these call established at CI=3521/Bcch=116, then hand

handover to Bcch=691 and droped. the Rxlev/Quality/C/I is good from the establishment to drop call. Will check the parameter sett


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Event Analysis

Drop call: Weak 3G coverage and Soft HO issue

4. Drop call in 3G Cell PSC=422 UARFCN=10662, the coverage is so worse but cannot trigger the hand over to Cell PSC=212 UARFCN

13db. should double check the neighbor relationship.


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Event Analysis

Drop call: Weak 3G coverage and Soft HO issue

5. Drop call in 3G Cell PSC=198 UARFCN=10662, the coverage is so worse but cannot trigger the hand over to Cell PSC=213 UARFCN

10db. should double check the neighbor relationship.


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Event Analysis

Drop call: Weak 3G coverage and IRATHO issue

(1).Drop call in 3G Cell PSC=166 UARFCN=10637,and trigger so much handover due to the weak .No good primary service cell here,

adjustment to set one primary service cell here.

(2).Already trigger the 2D event, but no handover to 2G, will double check the IRATHO neighbor.


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Copyright2011 Huawei Technologies Co., Ltd. All Rights Reserved.

The information in this document may contain predictive statements including, witho

statements regarding the future financial and operating results, future product portfolio, ne

etc. There are a number of factors that could cause actual results and developments to di

from those expressed or implied in the predictive statements. Therefore, such information i

reference purpose only and constitutes neither an offer nor an acceptance. Huawei ma

information at any time without notice.

Thank youwww.huawei.com

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Orange_DT Report 20141031