The document provides a network assessment report for the Axum area. It summarizes the results of a wireless optimization drive test conducted on June 10-11, 2021. Key findings include: 1. Coverage performance was 96.9% with RSCP above -95 dBm but some areas had poor coverage due to an inactive site. 2. Quality performance was above 96.6% with EcNo above -13 dB but some areas had poor quality due to a dominant site. 3. Recommendations include adjusting downlink power to address 43 call setup failures and adding SDCCH/TCH resources to address blocking and congestion issues.

1. WIRELESS OPTIMIZATION REPORT
Network assessment report for Axum area
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2. Document Control
Date (DD/MM/YYYY) Version Prepared by Remark
21/06/20201 V0.1 Tesfaye.T, Berihu.A &
Hafte.A
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3. Contents
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4. Introduction
• Test procedure
Test cases Drive test methodology
Coverage performance check 1. Coverage performance of the service area will be
checked. (Best Server RSCP)
Quality performance check 2. Quality performance of the service area will be
checked. (Best Server Ec/No)
UE TX Power Check 3. Both quality and Coverage performance will be
checked through TX Power.
Drive test/Analysis engineer name Tesfaye, Berihu.A & Hafte.A
Drive test UMTS Short Call
Drive test date Jun 10&11 2021
Drive Test Duration 2 days
Outdoor Measurement tool Nemo handy
Analysis tool Actix Software
UE Type Samsung S5
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5. Introduction
• The drive test is done in Axum city, there are 16 physical sites in the
cluster area that has been covered. In this report coverage and quality
performance of the cluster has been checked and the distribution of
coverage and quality performance of the cluster has been shown as well.
• The test is done for technology WCDMA and GSM (2G) at the specified
route.
• Objective
• Conduct DT and OSS KPI assessment for evaluating the network
performance and capacity to identify areas to be improved at the tested
route.
• Identify the problem and appropriate optimization proposal.
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6. Drive Test Route .
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7. DT Analysis CS Call Performance
Shown above call statistics for tested Area does not meet acceptable KPI
# of call Attempt 159
# of successfully established call 116
# of successfully completed call 111
# of call drop 5
Average Call Setup time (sec) 3.03
# of access Failures 43
Call connection established rate(%) 72.96%
Call setup success rate (%) 95.69%
Call drop rate (%) 4.31%
Access failure rate 27.04%
Uu_CS Call Setup Failure Cause Range
UE forced to idle 8
NAS Released 29
Call terminated by user 2
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8. Coverage Performance: RSCP(0DBM)
As shown above there is coverage RSCP >= -95 is 96.9%
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9. Quality Performance: ECNO (0DB)
From the drive taste rout 96.6% of EcNo is >-13
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10. UE_TXPOW PERFORMANCE: TX POW(0DBM)
The UE_TX power of the tested route is very good(i.e. 94.7% < 0
10
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UE_TX Power Performance: Ue-Tx (0DB)

11. Case Analysis
3G Call Setup Failure Analysis
Problem description:-here call setup failures due to lack of Resource Like DL power and
overshooting sites
Solution:-Request for DL power adjustment and physical adjustment for site 121038-sector 2
ET 3-4, sector 3 ET 6-7 121565 sector-3 ET 3-4
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12. Case Analysis
3G Bad coverage and quality area 1
Problem description:-here site 121041 which is active but not holding traffic
Solution:-Escalated the issue with the area supervisor to check the site and make it hold traffic
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13. Case Analysis
3G Bad quality area 2
Problem description:-here bad quality due to dominance site 121802 sector -3
Solution:-Physical adjustment on sector-3 ET from 4-3
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Before After

14. KPI Analysis
From the KPI analysis there are high Down link power congestion
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DL-power.Cong
CS call blocking due to call admission control-D(%) CS RAB Setup Failure Num
VS.RRC.Rej.DLPower.Cong DLCE REJECTION
RRC Rej and RAB Failure_DL Power Cong.ant RRC Congestion

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Introduction
Test Type : 2G Short Call
Test Type Short Call
Drive test date June 8&9, 2021
Drive Test Duration 2 days.
Measurement tool NemoHandy
Analysis tool Actix Software
UE Type Samsung Galaxy S5
Test cases Drive test methodology
Signal coverage performance
check
The received signal strength distribution will be
studied to see poor coverage area
Signal Quality performance
check
The signal quality(RxQual) distribution will be
studied to see poor quality area

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Drive test result
Call Performance :
• As we can see from the table the overall call performance of the cluster is good, except 12 Call setup failure are which is above acceptable
threshold(10%) .

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Drive test result
Coverage Performance :
• Outdoor coverage performance of Axum Cluster is excellent,92.1% of the cluster had RxLev > -85dBm. No signal below -95 dbm

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Drive test result
Quality Performance :
• Outdoor Quality Performance of Cluster 4 is Excellent except for some areas as shown in the circle above. 98.6% of the cluster
RxQual was from 0 to 4.

19. Case Analysis
2G Bad quality area 1
Problem description:-here bad quality due to dominance site 121223 sector -2(G-2)
Solution:-Physical adjustment on sector-2 ET from 0-2 MT 7-6
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Before After

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analysis
Call Setup failure and Call Drop Analysis :
• Problem description these Call setup failures and call drops caused by SDCCH and TCH blocking and congestion.
• Soln Add SDCCH and TCH

21. KPI Analysis
From the KPI analysis there are high SDCCH & TCH block and cong
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SDCCH Block & Cong
2G SDCCH_SETUP_BLOCKING_RATE_SLA(0.5%)
TCH Blocking(User Perceived)-Innovis
TCH Congestion Rate(%)
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TCH Block & Cong
TCH Congestion Rate(%)
TCH drop rate-Innovis(1)
TCH Blocking(User Perceived)-Innovis

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Conclusion and Recommendation
• From the overall drive test result Axum cluster , the coverage and Quality performance is good. However there are
some areas with poor coverage and quality as shown in the coverage quality distribution plot resulted in site 121041
which is active but not holding traffic.
• Regular DT measurement and analysis will improve coverage performance and improve customer experiences to the
network.
• There are also kpi degradation due to DL_power congestion and 43 call setup failures from the drive test result , so
to improve the call setup access we proposed DL_Power adjustment
• On 2G technologies KPI analysis has shown high SDDCH and TCH blocking and congestion, and from the drive test
result 12 call setup failures, hence we proposed SDCCH and TCH resource adjustment

23. Thank You
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