VF Turkey Analysis Version2

7/27/2019 VF Turkey Analysis Version2

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AMERICAS 218 Route 17 North, Rochelle Park, NJ 07662 +1 (201) 556-3100 +1 (201) 556-9320EMEA & APAC Kibbutz Glil-Yam, Herzliya 46905, ISRAEL +972 (0) 9 961-1500 +972 (0) 9 961-1511

Network

Analysis

Copyright Notice:Due to a policy of continuous product development and refinement, SchemaLtd. reserves the right to alter the specifications and descriptions outlined in this publication without

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Copyright2010 Schema Ltd
http://www.swisscom.ch/residential


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Network Analysis

Schema Confidential & Proprietary August 2010 page 2 of 84

Table of Contents

1 Introduction ...................................................................................................................... 3

2 Premium RAN Services Overview....................................................................................... 42.1 Vodafone Analysis ........................................................................................................................... 5

3 Ec/Io Analysis .................................................................................................................... 6

3.1 Ec/Io Map ........................................................................................................................................ 6

3.1.1 Worst Ec/Io Cells (polluted cells) ............................................................... ......................................... 10

4 RSCP Analysis .................................................................................................................. 174.1 RSCP Map ...................................................................................................................................... 17

4.1.1 Worst RSCP Cells (Coverage Limited) ................................................................................................. 20

5 Pilot Pollution Maps ........................................................................................................ 28

6 Traffic Maps .................................................................................................................... 316.1 RNC 1007 ....................................................................................................................................... 31

6.2 RNC 1012 Istanbul ...................................................................................................................... 377 Analysis of Areas with Poor Quality and Coverage ........................................................... 39

7.1 RNC 1007- Antalya ........................................................................................................................ 39

7.1.1 1st

Area .................................................................... ...................................................................... ...... 397.1.2 2

ndArea ................................................................... ...................................................................... ...... 41

7.1.3 3rd

Area ............................................................................................................................................... 43

7.2 RNC 1007 Konya ......................................................................................................................... 45

7.3 RNC 1012 Istanbul ...................................................................................................................... 47

8 CO-SC Analysis ................................................................................................................ 498.1 SC Reuse ........................................................................................................................................ 49

8.2 SC Planning .................................................................................................................................... 51

9 NL Optimization .............................................................................................................. 549.1 NL Recommendations Summary ................................................................................................... 54

9.2 NL Summary Report ...................................................................................................................... 54

9.3 Detailed NL Report ........................................................................................................................ 55

9.3.1 SUDEPO32931T-364713 (RNC 1007) .................................................................................................. 559.3.2 MR2UNV34021T-125972 (RNC 1012) .................................................................... ............................. 57

10 Overshooting Sectors ...................................................................................................... 5810.1 Overshooting Sectors Tables ...................................................................................................... 58

10.2 Overshooting Sectors Examples ................................................................................................. 60

10.2.1 MDRZPS34941T-120814 (RNC 1012) .................................................................................................. 6010.2.2 ORGNS342321T-310882 (RNC 1007) .................................................................................................. 61

11 Mobile Drop Analysis ...................................................................................................... 6311.1 Drop Reason Drill Down for Speech .............................................................................................. 63

11.2 Worst Subscribers ......................................................................................................................... 64

11.3 Drops Due to Missing Neighbors ................................................................................................... 68

12 KPI Analysis ..................................................................................................................... 7012.1 CS Bad Quality Call Rate (%) .......................................................................................................... 70

12.2 CS Con Rel Offset (Source Cell) (%) ............................................................................................... 72

12.2.1 Case #1................................................................................................................................................ 7412.2.2 Case #2................................................................................................................................................ 7812.2.3 Case #3................................................................................................................................................ 80

12.3 CS RAB Crop Call Rate.................................................................................................................... 82

Appendix 1 Reports ................................................................................................................ 84


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Network Analysis


1 Introduction

Schema Ltd. is pleased to present this Premium Ran Services report for Vodafone Turkey.

Schema is a leading global provider of advanced network optimization Software Solutions and Professional

Services for wireless telecom operators. Our products and services provide innovative solutions across all

2G, 3G, and 4G technologies, optimizing network performance and increasing profitability while enhancing

the end-user experience.

Schema understands the many challenges facing Vodafone in the current competitive, technological and

financial environments, and we appreciate the opportunity to help improve your network via our

Professional Services and software tools. We look forward to helping in any way that you deem

appropriate.


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Network Analysis


2 Premium RAN Services Overview

Schema is well known for its wide range of multi-vendor Optimization and Analysis products for wireless

operators. These products are all field-proven and deliver clear value to the operators. In the course of

developing and deploying these products, Schema has gained substantial experience in delivering related,

value-added services. The end-user experience and customer satisfaction have always been corporate

priorities and a strong focus of our ongoing customer relationships.

Schemas combination of technological excellence, cutting-edge tools, and hands-on engineering

experience uniquely positions us to deliver premium, value-added services to help RAN operators get the

most out of their investments in both infrastructure and personnel.

Schema delivers the following key benefits:

Real, measurable and ongoing improvement in network performance

Reduced dependence on infrastructure vendors

Improved processes and operational efficiencies

Comprehensive testing and optimization procedures

Optimal deployment of new technologies

Our Premium RAN Services include the following:

Network Audits

Network Optimization

Spectrum Management

Network Dimensioning

Product Implementation

Training and Consulting


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Network Analysis


2.1 Vodafone Analysis

Schemas Premium Services team utilized the Mentor solutions advanced analysis capabilities to

uncover hidden problems in the network, based on usage and performance data collected from the

network.Schemas proprietary geo-location technology transforms network call event data into maps that plot

Traffic, Ec/Io, Drops, Handovers, and other data for each location. Individual drop calls can be specifically

mapped and analyzed, and filtered on the basis of IMSI/IMEI, RAB type or drop reasons. It is also possible

to generate Excel reports, graphical layers, and maps using this information.

Analysis can be done per sector, site, group of sites, and cluster level - per time and date range resolution.

The powerful underlying data model enables analysis results in seconds.

These analysis capabilities, coupled with Mentors GeoMapping capabilities, deliver a visually intuitive

display of problems according to geography and other attributes.

The Drop Call Analysis Report pack includes all information relevant to analyzing network drop-rate

behavior, including a report showing the drop rate per sector, graphical maps showing the physical

location of drop hotspots, analysis of high contributing sectors, and analysis of drop reasons.

The following image shows an example of a drop call map. Each drop is geo-located and includes all

information about IMSI, IMEI, RAB, RF conditions, Neighbors, Active set etc. This example shows speech

drops due to poor RF conditions for cell YENHAL07841T-311074. Two cells are in the active set.


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Network Analysis


Ec/Io statistics RNC 1012

Best server Ec/IoDistribution, displays the percentage of messages for each specified Ec/Io value

Carrier 1:

Average Ec/Io: -6.37 db

Carrier 2:



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RNC 1007:


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RNC 1007 - Konya:



Carrier 1:



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3.1.1 Worst Ec/Io Cells (polluted cells)

RNC 1012:

Sector Name Cell ID Mean

TRKBLK34621T-123142 23142 -10.245

FKTHMC34831T-129353 29353 -9.638

ATASKV34211T-128331 28331 -9.582

ESTINO34111T-126111 26111 -8.953

SERASK34931T-125363 25363 -8.773

2KDKOY34A31T-125333 25333 -8.734

ATASKV34831T-128333 28333 -8.728

BSTGST34321T-120672 20672 -8.674

ULUSUW34921T-127752 27752 -8.568

Y2SYAK34321T-121882 21882 -8.463

MSTPZR34931T-120733 20733 -8.403

FETHMH34721T-126092 26092 -8.375ICRNKY34111T-127351 27351 -8.292

CAKMTM34831T-126933 26933 -8.243

FETHMH34931T-126093 26093 -8.209

MRM3UN34011T-125951 25951 -8.156

SCEMER34931T-124943 24943 -8.136

KNTPLS34111T-128291 28291 -8.004

KYMRKZ34321T-123732 23732 -8.004

TACSPR34311T-127331 27331 -7.998

RNC 1007:Sector Name Cell ID Mean

KUSDIL34621T-125802 25805 -9.376

MDRZPS34111T-120811 20815 -9.315

MDRZPS34631T-120813 20817 -9.218

KRSMP234011T-128151 28154 -8.608

KUSDIL34A31T-125803 25806 -8.603

FSZDNR34321T-120662 20665 -8.408

CFTHVZ34A31T-120943 20946 -8.197

2KDKOY34A31T-125333 25336 -8.185

FSZDNR34011T-120661 20664 -8.155

MDRZPS34941T-120814 20818 -8.141KRSMP234631T-128153 28156 -8.139

SERASK34931T-125363 25366 -8.110

MUHURD34011T-125341 25343 -8.108

HPRTKL34821T-121872 21875 -8.029

MDCFRG34321T-121112 21115 -7.984

CM1TPZ34931T-124123 24126 -7.757

EREKOY34111T-121581 21584 -7.706

SISTYN34621T-121792 21795 -7.704

KDBHRY34521T-123662 23665 -7.603

SISTYN34931T-121793 21796 -7.596


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This section displays the top 3 cells with the worst Ec/Io analysis. Only cells with a high number of users

for speech and data (higher than average) were chosen. Analysis of all cells can be found in the files.

Ec/Io Stats RNC 1007, Ec/Io Stats RNC 1012

FKTHMC34831T-129353 (RNC 1012)

Ec/Io distribution:

Average: -9.64 db

Ec/Io map:


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Network Analysis


Recommendations:

Add missing neighbors

Source Sector Name Target RNCID

Target Sector Name SC Distance(Km)

FKTHMC34831T-129353 1012 KRSMP234321T-128152 307 1.488

FKTHMC34831T-129353 1021 KURBDR34011T-126601 59 0.789

FKTHMC34831T-129353 1021 GAZHAN34421T-120572 254 0.998

FKTHMC34831T-129353 1021 DM2PNR34831T-122913 388 1.051

FKTHMC34831T-129353 1021 SAKIZA34421T-126582 163 1.165

FKTHMC34831T-129353 1012 SCESME34A21T-126562 252 0.739

FKTHMC34831T-129353 1012 MDMRKZ34011T-123381 188 1.592

FKTHMC34831T-129353 1021 GAZHAN34111T-120571 253 0.998

FKTHMC34831T-129353 1021 KURBDR34921T-126602 60 0.789

FKTHMC34831T-129353 1012 MRM3UN34011T-125951 104 0.709

Neighbors plan:


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ATASKV34831T-128333 (RNC 1012)

Ec/Io distribution:

Average: -8.73 db

Ec/Io map:


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Recommendations:

1. Add missing neighbors

Source Cell ID Target RNCID


28333 1012 KNTPLS34731T-128293 173 1.529

28333 1021 LIBADY34821T-125842 68 4.039

28333 1021 CAMSTR34611T-124971 119 5.473

28333 1021 N2KEML34321T-127432 81 3.354

28333 1012 UMRATA34821T-121162 333 2.140

28333 1021 BODRMC34111T-125831 454 4.583

28333 1021 LIBADY34611T-125841 67 4.039

28333 1012 YDUDUL34731T-123513 250 1.814

28333 1012 BLGRTM34111T-126101 72 3.695

Neighbors plan:

2.

Tilt 1 deg


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ULUSUW34921T-127752 (RNC 1012)

Ec/Io distribution:

Average: -8.73 db

Ec/Io map:


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Recommendations:




ULUSUW34921T-127752 1012 BYAZKN34731T-127323 37 2.586

ULUSUW34921T-127752 1012 YNSHRA34311T-120861 370 4.702

ULUSUW34921T-127752 1012 ICFNDK34111T-125201 16 2.814

ULUSUW34921T-127752 1012 TACSPR34311T-127331 48 2.215

ULUSUW34921T-127752 1012 GIRNCD34011T-127371 0 1.932

ULUSUW34921T-127752 1012 YDUDUL34211T-123511 248 2.529

ULUSUW34921T-127752 1012 Y2CMLC34821T-127792 25 1.509

Neighbors plan:

2. Tilt 1 deg


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4 RSCP Analysis

The following section describes the in-depth analysis of RSCP in RNCs 1007 and 1012. The analysis is taken

from the Mentor reports, based on real mobile measurements.

The input for the analysis is 11 days of logs with a total of 166,412,602 messages.

Bad RSCP is an indication of poor coverage. Cells with bad RSCP may have poor data/voice performance.

As part of the analysis, recommendations for improving the RSCP in the worst sectors were added.

The relevant files are attached.

4.1 RSCP Map

RSCP Best Server: The best Ec/Io value is taken from each sample, and the average of all the samples is

displayed for each bin.

RNC 1012:


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RSCP statistics RNC 1012

Best server RSCPDistribution, displays the percentage of messages for each specified Ec/Io value

Carrier 1:

Average RSCP: -84.5 dBm

Carrier 2:



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RNC 1007:

RNC 1007 - Konya:


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Carrier 1:


4.1.1 Worst RSCP Cells (Coverage Limited)

RNC 1012:


KUSDIL34A31T-125803 25803 -101.207

MSTPZR34931T-120733 20733 -100.177

TRKBLK34621T-123142 23142 -99.325

KYMRKZ34321T-123732 23732 -98.775

BSTCEB34921T-121662 21662 -98.650

ESTINO34111T-126111 26111 -97.387

YNCMLC34011T-127781 27781 -96.928

EMNALP34311T-124891 24891 -96.018

MDRZPS34631T-120813 20813 -95.518

KYMRKZ34011T-123731 23731 -95.108

OGRTMN34B31T-121763 21763 -94.829

BOSTNC34011T-121561 21561 -94.370

MDRZPS34941T-120814 20814 -94.280

G2ORNK34011T-127811 27811 -94.006

FBCAMI34111T-121731 21731 -93.572

GSGRLR34311T-125111 25111 -93.508

DDIMES34111T-127011 27011 -93.447

IMESGR34011T-127001 27001 -93.338

ORNEKT34721T-126132 26132 -93.311

ORNEKT34211T-126131 26131 -93.254


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RNC 1007:


AKSORM07731T-310963 10963 -107.353

TURRES42521T-311312 11312 -101.672

YAYLAW07011T-311131 11131 -101.630FINIKE07621T-310252 10252 -101.020

DOGRAS42B31T-311263 11263 -100.700

BOLSAN03731T-313063 13063 -100.041

KREMLN07721T-310482 10482 -99.926

SAKARY42011T-311351 11351 -99.916

DSMORG07011T-310221 10221 -99.889

KREMLN07111T-310481 10481 -99.872

BUSANS42521T-311272 11272 -99.835

BOLSAN03011T-313061 13061 -99.739

KOZLUK42011T-310711 10711 -99.407

ADAEVE07941T-310014 10014 -99.394ORGNS342941T-310884 10884 -99.101

BURDTT15521T-364512 64512 -98.987

DOGRAS42411T-311261 11261 -98.871

BUSANS42831T-311273 11273 -98.732

YAYLAW07321T-311132 11132 -98.399

This section displays the top 3 cells with the worst RSCP. Only cells with a high number of users for speech

and data (higher than average) were chosen. Analysis of all cells can be found in files RSCP Stats RNC

1007 and RSCP Stats RNC 1012.

ULUSUW34921T-127752 (RNC 1012)

RSCP distribution:

Average: -98.65 dBm


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RCSP map:

Recommendations:




ULUSUW34921T-127752 1012 BYAZKN34731T-127323 37 2.586

ULUSUW34921T-127752 1012 YNSHRA34311T-120861 370 4.702

ULUSUW34921T-127752 1012 ICFNDK34111T-125201 16 2.814

ULUSUW34921T-127752 1012 TACSPR34311T-127331 48 2.215

ULUSUW34921T-127752 1012 GIRNCD34011T-127371 0 1.932

ULUSUW34921T-127752 1012 YDUDUL34211T-123511 248 2.529

ULUSUW34921T-127752 1012 Y2CMLC34821T-127792 25 1.509


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Neighbors plan:

2. Tilt 1 deg

KYMRKZ34011T-123731 (RNC 1012)RSCP distribution:

Average: -98.65 dBm


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Network Analysis


RCSP map:

Recommendations:




KYMRKZ34011T-123731 1012 IMESGR34931T-127003 476 2.057

KYMRKZ34011T-123731 1012 YNCMLC34421T-127782 398 0.813

KYMRKZ34011T-123731 1012 YDACSU34A21T-123162 161 2.100

KYMRKZ34011T-123731 1012 YDACSU34111T-123161 160 2.100

KYMRKZ34011T-123731 1021 DOGNEV34221T-127022 45 3.262KYMRKZ34011T-123731 1012 BYRKTR34421T-121932 73 2.458

KYMRKZ34011T-123731 1012 ELALMS34011T-126941 402 2.661

KYMRKZ34011T-123731 1012 BYRKTR34A31T-121933 74 2.458

KYMRKZ34011T-123731 1012 KYD2KV34821T-127742 10 0.368

KYMRKZ34011T-123731 1017 FRPASA34721T-125052 13 2.987

KYMRKZ34011T-123731 1017 KZGSLR34721T-121012 381 3.012


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Neighbors plan:

2. Tilt 2 deg


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Network Analysis


ORNEKT34211T-126131 (RNC 1012)

RSCP distribution:

Average: -93.25 dBm

RCSP map:


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Network Analysis


Recommendations:

Add missing neighbors



ORNEKT34211T-126131 1012 INON2C34011T-130691 253 2.716

ORNEKT34211T-126131 1021 CAMSTR34611T-124971 119 3.205

ORNEKT34211T-126131 1012 FETHMH34931T-126093 125 0.901

ORNEKT34211T-126131 1021 BODRMC34111T-125831 454 1.788

ORNEKT34211T-126131 1021 FERAHC34611T-124981 120 2.740

ORNEKT34211T-126131 1021 KCMTNL34011T-120651 21 2.215

ORNEKT34211T-126131 1021 LIBADY34821T-125842 68 1.342

ORNEKT34211T-126131 1012 ATASEH34311T-121591 155 3.633

Neighbors plan:

This site should be checked for cross feeders or swapped antennas. The Azimuths do not look correct.


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Network Analysis


5 Pilot Pollution Maps

RNC 1007 - Antalya:


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Network Analysis


RNC 1007 - Konya:


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Network Analysis


RNC 1012 Istanbul:


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Network Analysis


6 Traffic Maps

6.1 RNC 1007

Traffic map All RABs

Antalya:


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Network Analysis


Konya:


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Network Analysis


Traffic map CS speech

Antalya:


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Konya:


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Network Analysis


Traffic map HSDPA

Antalya:


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Network Analysis


Konya:


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Network Analysis


6.2 RNC 1012 Istanbul

Traffic map All RABs:

Traffic map CS speech:


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Traffic map - HSDPA:


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7 Analysis of Areas with Poor Quality and Coverage

7.1 RNC 1007- Antalya

The following section describes areas with bad quality and coverage, where the traffic average per bin is

above 10 milliErlang. The maps were created using Mentors combined map feature, for the following

conditions:

7.1.1 1st Area

Poor coverage and quality map:

The poor coverage and pilot pollution situation will be solved after power up of the inactive sectors in the

area.


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Network Analysis


Pilot pollution map:

The maps were created using Mentors combined map feature, for the following conditions:


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Network Analysis


7.1.2 2nd Area



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Network Analysis





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7.1.3 3rd Area



area.


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7.2 RNC 1007 Konya

Poor coverage and quality:


area.


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Pilot Pollution map:


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7.3 RNC 1012 Istanbul



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Pilot Pollution map:



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Network Analysis


8 CO-SC Analysis

Scrambling Code (SC) analysis and warnings are part of Mentors capabilities.

Mentor can analyze, fix, or plan SCs from scratch.

8.1 SC Reuse

RNC 1007:

Scrambling codes are not evenly distributed between cells.

SC 0, 1, 2 have 9 repetitions.

SC 13, 14 have 8 repetitions.

Most SCs between 0-110 have 2 or more repetitions.

Most SCs between 110- 511 have 1 repetition.

SC repetitions RNC 1007:


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Network Analysis


RNC 1012:

Most of the SCs have 1 repetition with some exceptions of 4 repetitions and more.

SC 496 has 7 repetitions.

SC 497 has 5 repetitions.

SC repetitions RNC 1012:


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Network Analysis


8.2 SC Planning

RNC 1007:

No significant SC problems were found in RNC 1007.

There was only one case of possible conflict when Mentor looked for new neighbor candidates.

Source sector BURDUV15111T-364571

During the logs period, when cell BURDUV15111T-364571 was the strongest, mobiles reported SC 9 1152

times. Mentor resolved this report as cell GAZICD15931T-364533 670 times, and 482 times it was resolved

as cell DEREMH32831T-364723. This might create a problem since Mentor recommends adding cell

GAZICD15931T-364533 as a neighbor to BURDUV15111T-364571.


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Network Analysis


RNC 1012:

Overall, Scrambling Code planning was good and no major issues were observed. However, tier 2

neighbors (neighbor of neighbor with same scrambling code as the source) were found. This issue should

be fixed but the impact expected in RNC 1012 is minor since in-building sectors are involved.

Tier 2 SC problems list:

SC Source Sector Name Carrier ID Target Sector 1 Target Sector 2

496 PLDAVM34I21T-122422 1 MARIOT34651T-122415 NIDAKL34I11T-125661

308 KRSMP234631T-128153 2 SERASK34311T-125361 SAHCED34731T-120823

499 OPTAVM34I51T-122495 2 MARIOT34961T-122416 MARIOT34I21T-122412

496 NIDAKL34I11T-125661 2 CNTRIM34011T-122355 CNTRIM34I31T-122353


497 BGREEN34I11T-123041 2 CNTRIM34011T-122355 CNTRIM34I41T-122354

496 BGREEN34I21T-123042 2 SAHCED34421T-120822 NIDAKL34I11T-125661

498 OPTAVM34I41T-122494 2 HSN2PS34211T-126571 DOGUSM34I11T-120631

46 MDCFRG34631T-121113 1 SEHSVA34111T-133611 GDKPA234111T-139281498 MARIOT34I11T-122411 2 OPTAVM34311T-122491 OPTAVM34I41T-122494

499 MARIOT34I21T-122412 2 TRIOKO34631T-121753 OPTAVM34I51T-122495


500 MARIOT34I31T-122413 2 TRIOKO34631T-121753 OPTAVM34I61T-122496

96 MR2UNV34021T-125972 1 KD3MRK34621T-121222 KD6YOL34011T-125271

498 MARIOT34I11T-122411 1 YESAEB34211T-127851 OPTAVM34I41T-122494

496 NIDAKL34I11T-125661 1 BSTCEB34511T-121661 BGREEN34I21T-123042

498 OPTAVM34I41T-122494 1 KOZKVS34111T-121001 MARIOT34I11T-122411

496 BGREEN34I21T-123042 2 CNTRIM34011T-122355 CNTRIM34I31T-122353

306 KRSMP234011T-128151 2 ABADEM34421T-121542 SAHCED34011T-120821

The full list, including surrounding RNCs is in the file Tier 2 SC problems list.xls.

Example of a Tier2 SC problem in RNC 1011:


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Network Analysis


There are cases where Mentor had collisions resolving the SC.

Example of such a collision:

Source sector ATASKV34211T-128331

During the logs period, when cell ATASKV34211T-128331 was the strongest, mobiles reported SC 317

700 times. 350 times Mentor resolved this report as cell GZ2SYK34011T-128031 and 250 times it was

resolved as cell YEDPAS34011T-127771. This might create a problem when one of the cells is an existing

neighbor or a candidate for being a new neighbor as recommended by Mentor.

The full list of SC collisions is attached in file Potential SC problems RNC 1012.


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Network Analysis


9 NL Optimization

9.1 NL Recommendations Summary

RNC 1012 (carrier 1):

Neighbors to add 2321

Neighbors to remove 3589

Priority change 7122

RNC 1007:

Neighbors to add 2384

Neighbors to remove 1587

Priority change 5930

All detailed list of recommendations can be found in files NL recommendations RNC 1012 and NL

recommendations RNC 1007. Mentor can also prepare automatic scripts to easily implement these

recommendations.

9.2 NL Summary Report

The NL Summary report identifies sectors with the most significant neighbor changes. Below is a list of

sectors with high HO Rate Change %. For example, 20% Ho Rate Change, means that Mentor estimates

that more than 20% of potential handovers belong to missing neighbors. A full list is in file attached NL

Summary Report.

RNC 1012:

RNC 1007:


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Network Analysis


9.3 Detailed NL Report

The Detailed NL report contains Mentors NL Optimization results, per sector carrier.

This report contains neighbor list recommendations including:

Suggested NL sorted by new priority

Original neighbors that were deleted

Potential neighbors that should be added to the NL

The report includes separate tabs per carrier

The report may include source sectors within the following categories:

Optimized sectors regular cells that are part of the selection set and have enoughHO counts to be optimized

Non-optimized sectors changed only due to reciprocity:

o External sector affected by reciprocity

o Low count sectors

Non-optimized sectors (outgoing is locked)

o Inactive cells

The following section provides examples of the sectors with high HO rate changes (%)and the new

neighbors added.

9.3.1 SUDEPO32931T-364713 (RNC 1007)


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9.3.2 MR2UNV34021T-125972 (RNC 1012)


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10 Overshooting Sectors

Identification of overshooting sectors is based on access distance histograms. The full histograms can be

found in attached files Access distance histograms RNC 1007 and Access distance histograms RNC

1012.

10.1 Overshooting Sectors Tables

RNC 1012:

RNC 1007:


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Network Analysis


Top 10 over shooters:

RNC 1012:

Sector Name Carrier Average Standard Deviation

MDRZPS34941T-120814 1 5651.895 2547.655

BSTSHL34621T-124902 1 5263.665 4488.656

2KDKOY34A31T-125333 1 4259.062 2518.163

SERASK34931T-125363 1 3790.357 1532.707

INON2C34421T-130692 1 2996.099 4298.403

INON2C34731T-130693 1 2330.756 4817.892

HPRTKL34821T-121872 1 2148.240 2218.382

YLDGRM34621T-125292 1 1695.613 3641.625

CM1TPZ34931T-124123 1 1600.502 3141.535ARAPHC34011T-127841 1 1566.423 1695.678

RNC 1007:

Sector Name Carrier Average Standard Deviation

ORGNS342321T-310882 1 13364.401 7751.510

ELMLAN07621T-310232 1 11609.170 5831.088

BOLSAN03731T-313063 1 10913.140 6197.893

BOLSAN03321T-313062 1 9696.114 5430.471

ORGNS342011T-310881 1 9349.482 5839.550

IKBALW03111T-313071 1 8469.981 6165.844

OZGMAH15011T-364521 1 8125.161 8026.637

SIRINE15111T-364551 1 7942.207 8207.713

ORGNS342941T-310884 1 7737.346 4053.803

ELMLAN07831T-310233 1 7128.174 3369.542


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Network Analysis


10.2 Overshooting Sectors Examples

10.2.1 MDRZPS34941T-120814 (RNC 1012)

Access Distance Histogram:

Traffic Map (all RABs):


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Network Analysis


10.2.2 ORGNS342321T-310882 (RNC 1007)


Traffic map (all RABS):


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Network Analysis


Tilt Recommendations

Mentor uses a smart algorithm to identify overshooting cells that are candidates for tilt optimization. The

algorithm is based mainly on measurement reports collected continuously from logs (CHRs). Note that not

every cell with high access distance is a candidate for tilt. Tilt recommendations are based on traffic

distance but also on the amount and distance of the surrounding neighbors and the level of interferencecreated by the source cell.

Schema recommends considering implementation of 1 deg tilt as the first step. Afterwards, collect logs

and prepare a model in order to analyze the new RF environment. All tilt recommendations should be

reviewed by a local engineer in case of local limitations or problems that are unknown to Mentor.

RNC 1012:

IKRPLZ34311T-127341

USTGZT34311T-120711

INON2C34011T-130691

YNSHRA34311T-120861

KDBHRY34521T-123662YESAHO34411T-128801

KD2SER34421T-130452

OPTAVM34311T-122491

INON2C34731T-130693

2KDKOY34A31T-125333

ATASTM34A31T-124523

HPRTKL34411T-121871

KYD2KV34A31T-127743

ATASKV34831T-128333

GIRNCD34011T-127371

TRIOKO34631T-121753

PLDAVM34411T-122421

MR2UNV34021T-125972KOZKVS34111T-121001

MARIOT34651T-122415

YDUDUL34731T-123513

KRSMP234321T-128152

TACSPR34931T-127333

SAHDER34521T-121042

INON2C34421T-130692

KRSMP234631T-128153

RNC 1007:

PERGEB07A31T-311173

OZALKT42421T-311362

YENHAL07531T-311073

BAYIND07111T-310091

YENHAL07321T-311072

LAREND42B31T-310723

ORGNS342941T-310884

HILLSI07821T-310372

KONSVR07B41T-310463

NALCTT42011T-310681

NALCTT42A31T-310683

GECITM42211T-311291

KALEIC07931T-310423

RECEPG42821T-310702

BLIMAN07621T-310122

GOLDEN07111T-310281

HACIKY42211T-310791


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Network Analysis


11 Mobile Drop Analysis

All drop analysis, including IMSI, drop time, location, reason, cell in active set, candidate neighbors, and

duration can be found in the files Drops Analysis Speech RNC 1012 and Drop Analysis Speech RNC

1007.

Drop reason analysis for speech - RNC 1012:

11.1 Drop Reason Drill Down for Speech

TIMER EXPIRED is the number one cause for speech drops in RNC 1012. The next phase is drill down to the

worst subscribers with this cause.


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Network Analysis


From the Detailed Mobile Drop report we can see that all the drops occur when the mobile tries to add

sector IKRPLZ34311T-127341 to sector BIDOOT34211T-121821. The screenshot below demonstrates the

problematic neighbor definition.


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Network Analysis


When reviewing the NL recommendation for sector IKRPLZ34311T-127341, we see the following:

Source sector IKRPLZ34311T-127341:

Source sector IKRPLZ34721T-127342:

As can be seen, it appears we may have a wrong azimuth or cross feeder situation.


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Network Analysis


Another candidate for cross feeder or wrong azimuth is sector ULUSUW34411T-127751:

Drop reason analysis for speech - RNC 1007:


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Network Analysis


11.3 Drops Due to Missing Neighbors

In this section there is an example of drops due to a missing neighbor, as shown below.

Active leg SUDEPO32931T-364713

Candidate legs that are not in the current NL ISPUNI32A31T-364733, DAVRAZ32A31T-364743 and

BINBIR32941T-364774


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Network Analysis


Mentor NL recommendation:


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12 KPI Analysis

12.1 CS Bad Quality Call Rate (%)

CS Bad Quality Call Rate is the measurement of the number of calls that ended in normal release, but in

bad RF conditions.

In order to determine this, it is first necessary to find out what bad RF conditions are. In order to do so,

two histograms will be accumulated and equated against each other.

Histogram #1 will be the distribution of the Ec/No of the last measurement report of each CS call that

ended with normal release.

Histogram #2 will be the distribution of Ec/No of all the measurement reports of CS calls that ended in

normal release.

When equating both histograms, it is expected that in low Ec/No values histogram #1 will accumulate

more percentage. In order to determine the bad RF condition limit, it is necessary to find at which Ec/No

the percentage in histogram #2 surpasses the percentage in histogram #1. This will be the bad RF

condition limit.

Figure 1: Find the Ec/No in which the percentage in histogram #2 (all messages) surpasses the

percentage in histogram #1 (last message). In this case, it happens at Ec/No=-12.5dB.


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Network Analysis


Below is a list of the worst 20 sectors in RNC 1007:

Sector NameCS Bad

Quality CallsRate (%)

MRATPA07731T-311083 18.09%

AURALL07311T-310931 16.70%

MRATPA07421T-311082 16.21%

ALTSIN07841T-310564 16.21%

BLIMAN07011T-310121 16.17%

AUTEKN07621T-310942 15.51%

ORUCIS03111T-313021 15.05%

FABRMH07011T-310241 14.95%

ADAEVE07941T-310014 14.73%

GOROTE07111T-310291 14.66%

YENHAL07531T-311073 14.44%

FABRMH07931T-310243 14.29%

AUTEKN07931T-310943 14.23%

AURALL07621T-310932 14.17%

AURALL07931T-310933 13.95%

STADYM07431T-310033 13.92%

AUTEKN07211T-310941 13.88%

PERGEB07A31T-311173 13.74%

ERENKY07531T-311013 13.47%

ATACAD07421T-310082 13.27%


Sector NameCS Bad

Quality CallsRate (%)

CAKMTM34831T-126933 31.62%

Y2SYAK34321T-121882 26.76%

ATASKV34211T-128331 23.05%

FBIYKT34521T-120697 22.22%

ATASKV34831T-128333 21.76%

FBIYKT34A31T-120698 19.44%

ESTINO34111T-126111 18.74%

MDRZPS34941T-120814 17.90%

SISTYN34931T-121793 16.60%

GIRNCD34011T-127371 16.24%

2KDKOY34A31T-125333 15.83%

KD2SER34421T-130452 15.52%

CAKMTM34421T-126932 15.31%

KNTPLS34111T-128291 15.20%

ESTINO34A31T-126113 15.17%

YN2SHR34B31T-122473 14.80%

ATASKV34421T-128332 14.35%

INON2C34011T-130691 14.11%

YDUDUL34731T-123513 14.06%BKSFLR34721T-124622 13.90%


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Network Analysis


12.2 CS Con Rel Offset (Source Cell) (%)

Connection Release Offset - If any measurement on a detected set cell surpasses the

measurement of the best cell by 12dB, it is counted as a Missing Neighbor case for the source

cell.


Sector Name

CS Con RelOffset

(SourceCell) (%)

AQLAND07011T-310051 2.25%

AQLAND07721T-310052 2.11%

AUTEKN07211T-310941 1.83%

AUYURT07221T-310952 1.29%

STADYM07431T-310033 1.18%

AKINCI42A31T-310743 1.17%

AUYURT07011T-310951 1.14%

HILLSI07111T-310371 1.10%

GECITM42211T-311291 1.08%

AUTEKN07621T-310942 1.07%

HVKVSK07721T-310362 1.06%

KARBOS42831T-310863 1.04%

HILLSI07B31T-310373 1.00%

GLOGOL07011T-311621 1.00%

BOSNAH42421T-310832 0.98%

DEMKAV07A41T-311034 0.94%

MASADA07621T-310512 0.94%UNIVER42821T-310872 0.93%

HALIKV32011T-364761 0.90%

PERGEB07111T-311171 0.88%


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Network Analysis



Sector Name

CS Con Rel Offset

(Source Cell) (%)

2KDKOY34A31T-125333 11.83%

ATASKV34211T-128331 7.18%MDRZPS34941T-120814 4.38%

CKCMLK34521T-121832 4.28%

YESAEB34521T-127852 4.12%

KOZKVS34721T-121002 3.84%

KZYATA34A31T-128063 3.50%

ATASTM34211T-124521 3.42%

BKSFLR34721T-124622 3.11%

CAKMTM34421T-126932 3.05%

YNSHRA34311T-120861 2.99%

INON2C34011T-130691 2.87%

YDUDUL34731T-123513 2.63%

PLDRSD34I11T-122431 2.50%MARIOT34I21T-122412 2.47%

HPRTKL34821T-121872 2.34%

SUADYE34B31T-124833 2.21%

PLDRSD34I21T-122432 2.06%

KOZKVS34111T-121001 2.04%

ARAPHC34011T-127841 1.94%


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Network Analysis


The following cases present a sector with normal release for bad RF and high Con Rel Offset.

12.2.1 Case #1

Sector MRATPA07731T-311083

CS Bad Quality Calls Rate (%) = 18.09%

CS Con Rel Offset (Source Cell) (%) = 0.45%

CS Drop Call Rate (%) = 0.29%

Ec/Io Best Server map:


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Network Analysis


Ec/Io Best Server Histogram:



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Network Analysis


From Mentor Drop Call Map:

Source sector MRATPA07731T-311083 is trying to add to the active set sector

YENHAL07011T-311071 because it is not in the NL of the source sector the call dropped.

Mentor NL Summary Report:

Mentor NL Report:

Target sector YENHAL07011T-311071 is missing from the NL. It has 18.3% HO rate, which

can be the cause of high drops for this sector.


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Network Analysis



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Network Analysis


Sector AQLAND07721T-310052

Sector AQLAND07011T-310051

It seems from the Mentor NL suggestion that this site has the wrong azimuth or a cross feeder situation.


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Network Analysis


12.2.3 Case #3

Sector CAKMTM34831T-126933

CS Bad Quality Calls Rate (%) = 31.62%

CS Con Rel Offset (Source Cell) (%) = 1.36%

CS Drop Call Rate (%) = 0.45%


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Network Analysis



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12.3 CS RAB Crop Call Rate

RNC 1007 Antalya:

RNC 1012 Istanbul:


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Network Analysis

Appendix 1 Reports

Access Distance Histograms: Displays the number of calls initiated at specified

distances from the access sector. Ec/Io Stats: Displays Ec/Io statistics for each of the carriers in the network.

RSCP Stats: Displays RSCP statistics for each of the carriers in the network.

Mobile Drop: Displays a detailed report of the dropped calls recorded in the selection set,for all mobiles or filtered according to the mobiles' IMEIs or IMSIs, the drop reason or RABgroup. This report is defined by default.

APN Histograms: Displays the details of the APNs found in the network data.

Potential SC problems Displays list of collisions in SC resolved by Mentor.

Tier 2 SC problems list Displays list of cases where a neighbor of a neighbor has the

same SC as the source cell. NL recommendations Displays list of recommendations for the intra-frequency

neighbor list.

Date post:	02-Apr-2018
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