3G APR Process V1.0

3G APR Process Document Classification: C1

RO – QoS North Optimisation

3G APR Process

Version 1.0

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Author Jonathan feasby

Date 23/12/2006

Version 1.0

Filename document.doc


Ownership & Distribution

Name Responsibility Owner Approver Reviewer Distribution

Document History

Version Reason Date

1.0 Draft Version 18.07.2005

.

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Table of Contents

1 Introduction...................................................................................................................................41.1 Purpose................................................................................................................................41.2 Scope...................................................................................................................................41.3 Out of Scope........................................................................................................................4

2 Key Points & Assumptions............................................................................................................42.1 Key Points............................................................................................................................42.2 Assumptions.........................................................................................................................5

3 Terms & Abbreviations.................................................................................................................5

3.1 Definition of Terms...............................................................................................................53.2 Process Abbreviations..........................................................................................................5

4 Process Description......................................................................................................................64.1 Process Flow Chart..............................................................................................................64.2 Process Summary................................................................................................................7

5 Activity Description.......................................................................................................................8

5.1 <Enter Activity Name 1>.......................................................................................................86 Process Role Definition................................................................................................................9

6.1 <Role Name 1>....................................................................................................................97 Acknowledgements.......................................................................................................................9

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1 IntroductionThe 3G APR process provides a method through which a group of cells within specified areas of the

3G Radio Network is analysed. This is to identify any CS or PS performance issues in order to look

at resolutions.

1.1 PurposeThe purpose of this document is to illustrate the 3G APR Process for the management of 100k

Town Performance evaluation and subsequent analysis within RO – QOS Optimisation and

consequently within Business As Usual (BAU).

1.2 ScopeThis document defines the process and it provides details of the inputs and outputs as well as

ownership and timescales to give a holistic view of how the process should function.

This document also provides a framework for the responsibilities of those involved in managing the

100k Town Performance evaluation and subsequent analysis.

1.3 Out of ScopeProcesses that have been identified as out of scope are:

2G Optimisation

Service Area Team

Rigging Team Co-ordination

2 Key Points & Assumptions2.1 Key PointsThe processes described herein are based upon the following key points and criteria:

APR Area - The Area will define the extent of the analysis. The area will encompass all the

3G cells to be analysed. A list of the 3G cells must be included with any known issues The

area should be bounded by a polygon. The area can be user defined e.g Docklands or

Defined by the Business e.g 100k Towns

Cells – The cells list is required to define all the 3G cells included in the analysis (Planned

and Live). Any known cell issues should be noted.

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Analysis – The analysis will be conducted for all the cells defined in the APR area. There are

4 main areas of analysis.

o Statistical analysis based at cell level counters

o Radio parameters

o Predicted Measurements (Atoll Plots)

o Drive Test Results

APR Schedule – The APRs are to be conducted on a bi annual basis as BAU for each area

OR if the performance of an area falls below the set Radio KPI OR upon request as part of

other projects.

2.2 Assumptions

The following assumptions have been made whilst creating this process:

C&T planners are responsible for delivery of new site integrations, planned cells lists and

Atoll plots and have a separate process detailing the work flow.

C&T planners are also responsible for the approval of physical changes to site

configurations and ICNIRP compliance.

Regional Service Area Teams are responsible for cell availability.

Drive Team resource is available for any drive trial requirements with all necessary

equipment.

External rigging teams will supply materials for physical changes as part of their BAU

activities.

Optimisation Teams are proficient in the use of all tools/software mentioned within the

process and have necessary access/logins.

3 Terms & Abbreviations3.1 Definition of TermsThe following terms are used within this document:

Term Meaning

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Change Management Team

Are responsible for agreeing & managing changes to the network

Configuration Management

Prepare and load onto the network data files containing agreed changes

Service Area Team

Are responsible for physical changes to the network, i.e. changing hardware within the network

3.2 Process Abbreviations

The following abbreviations are used within this document:

Abbreviation Meaning

C&T Coverage and Transmission

APR Area Performance Review

KPI Key Performance Indicator

POI Point of Interest

CS Circuit Switched

PS Packet Switched

XML Extended Mark-Up Language

VPW Vodafone Parameter Warehouse

GPEH General Performance Event Handling

UE User Equipment

NCS Neighbour Cell Support

OSS Operation System Support

RECORD Radio Engineering Configuration in Oracle Database

2G 2nd Generation Mobile Telephone Network

3G 3rd Generation Mobile Telephone Network

CSSR Call Setup Success Rate

DCR Drop Call Rate

ICNRP International Commission for Non-Ionizing Radiation Protection

IRATHO Inter Radio Access Technology Hand Over

SAT Service Area Team

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<Insert Process Name> Document Classification: C1 - C2 - C3 - C4 <Delete as appropriate>

4 Process Description

4.1 Process Flow Chart

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4.2 Process Summary

Process Reference

Process Name 3G APR Process

Process Description The 3G APR process provides a method through which a group of cells within specified areas of the 3G Radio Network is analysed. This is to identify any CS or PS performance issues in order to look at resolutions

Inputs Cell Data (Live and Planned), Counter based statistics, Parameter sets, Drive Trial data.

Process Breakdown Area Definition

Compile cell data (live and planned)

Atoll plots

High level statistical analysis

C&T planner discussion

Ncell Audit

Parameter Audit

Detailed statistical analysis

Drive Trial analysis

Conclusions

Recommendations

Publish APR

Review APR actions when recommendation complete.

Controls Active Library Explorer (ALEX)

Nortel Live Link

Resources Required (Non-People)

Applications: Clarify, Evenflow, VPW, OSS/RC, ACTIX, EMAS, MS Office, Business Objects, NEMO, TEMS, WNMS, PrOptima, Atoll.

Equipment: Specialist Vehicle, Scanner, Specific UE

Process Role Optimisation Engineer

RF Engineer (Drive Tester)

C&T planner

Outputs Completed APR document detailing all areas for

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improvement and what recommendations are being implemented to achieve an improvement in performance.

Process Measures Improved performance measured within the APR area compared with agreed KPI detailed in section 5.9.

Timescales Each defined APR area (100k Town) to be reviewed twice a year.

Process Risk & Error Sources

The effectiveness of the process and therefore the improvement in Area Performance is reliant on the experience of the Optimisation Engineer and C&T planner.

Current Department(s) The activities / tasks that are within scope of this Process are completed by:

VF UK North Region Optimisation Team

Process Owner The owner of this process and, therefore, responsible for approving / authorising any changes to the process is:

VF UK North Region Optimisation Team

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5 Activity DescriptionThis section references the Activity from the process flow in section 4.1

5.1 IntroductionProcess ID Introduction.

Area Overview/Definition/PolygonInputs Scheduled APR, Reported Customer Complaints, KPI’sProcess Definitions Introduction- Provide a Brief Overview of the Area. Include

Traffic Hotspots, Special Events, Main areas of interest, POI, any Special Projects/Trials and any other relevant information.Area Overview/Definition/Polygon -Define the geographical extent of the area. Include Size in km2.

Outputs Introduction and Overview of APR AreaA definition of the Geographical area for the APR e.g 100k Town.

SLAKPINotes The inputs are used as a basis for deciding which area is to

be used. E.g a 100k town not meeting its KPI’s

5.2 Cell ListsProcess ID Define Cells ListInputs APR area. APR polygon. Planned Sites.

Exist9ing Sites. Atoll Plots.Process Definitions List all LIVE 3G Cells within the Extent of

the APR area. Include Cell Type W, B, C etc. Include a column for Cell issues. Note any cell specific issues.List all PLANNED 3G cells within the extent of the APR area. Include details of planned live date, objective and planned configuration.

Outputs Completed Live Cell List List- see belowCompleted Planned Cell List- see below

SLAKPINotes

Live Cells List- Example

SITE TX_ID RNC BUBBLE UTRAN_ID SC Cell Issue Cell Type24 W00024011 SD1 153 35459 0 None W

24 W00024021SD1

153 35458 8Requires 2nd

Carrier Upgrade

W

24 W00024031 SD1 153 35457 16 Faulty Antenna

W

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32210 W32210031 SD1 153 37144 64 None W

7938 W07938031 SD1 136 44934 377 Crossed Feeders

W

1844 W01844021 SD1 136 46228 57 SC clash W

1844 W01844031 SD1 136 46227 65 Hardware Fault

W

Planned Sites- Example

SITE Planned Live Site Objectives

Sites Details Cell Type

48975 Aug 06Improve

RSCP along the A219

25m, 3G Only, 3 Sector

W

48979 Jan 08 Improve

Ec/Io in City Centre

15 m 2G/3G, 2 Sectors

W

5.3 Atoll PlotsProcess ID Atoll PlotsInputs Planned Sites Layer .Atoll. Map Data.Process Definitions Produce RSCP, Ec/Io Plots for existing

Coverage, Proposed Coverage, Dominance , Soft Hand Over Regions. Include the Traffic Load Conditions applied.

Outputs RSCP Existing and Planned Coverage , Ec/Io existing and planned Coverage , Dominance , Soft Hand Over Regions.

SLAKPINotes

5.4 Meeting with C&T plannerProcess ID Meeting with C&TInputs Planned Sites Details. C&T Local

Knowledge. POW.Process DefinitionsOutputs Summary of discussion to included

planned sites and also any configuration changes expected.

SLAKPINotes

5.5 High Level StatisticsProcess ID High Level Statistics

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Inputs KPI’s for Time period since last APRProcess Definitions Complete and Insert the KPI’s table

BelowOutputs Completed KPI’s table and Produce KPI’s

graph for the previous Month or since last APR

SLAKPI As per existing 3G KPI’sNotes

5.6 Radio Network Functionality and AuditProcess ID Radio Network Functionality/ Features

AuditInputs OSS XML dumps, Drive Test ResultsProcess Definitions Complete Table Below for the defined

area/ No of Sites.Outputs Completed TableSLAKPINotesExample Radio Network Features Table

E/// RAN Functionality RNC/Cell level Parameters

Parameters exist within APR area with non-default

settings Y/N

Number of Cells with non-

default parameter settings

Admission Control Both Y 1Cell Update RNC N N/A

Channel Switching RNC N N/ACongestion Control Cell Y 1

Capacity Control Both N N/AConnection Setup and

Release RNC N N/APaging RNC N N/A

Power Control Both N N/ARadio Connection

Supervision Both N N/AActive Set Performance Both N N/A

Cell Reselection Both N N/AIRAT Handover Both N N/AInter-Frequency

Handover and Cell Reselection

Both N N/A

Inter-Frequency Load Sharing Both N N/A

Directed Retry Both N N/AService Related

Congestion Handling Both N N/ADynamic RAB Establishment RNC N N/A

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HS Admission Control Both N N/AHS Mobility RNC N N/A

HS CQI Adjustment RNC N N/A

5.7 NCELL AuditProcess ID Ncell AuditInputs OSS, XML dumps, NCS-W, NCS-G Audit,

VPW, Drive Trails Results, Atoll, GPEH traces.

Process Definitions Conduct audit to identify missing Neighbour Relations. Conduct audit to find redundant relationships that are no longer required.

Outputs Details the missing Ncells as an input to the Final Actions.Detail the Redundant Neighbours to be removed.

SLAKPINotes Missing Ncells to be complied as a .csv

file and sent to the regional SAT.

5.8 Parameter AuditProcess ID Cell Level Radio Parameters AuditInputs OSS, XML dumps, NCS-W, NCS-G AuditProcess Definitions Conduct audit to assess cell level

ParametersOutputs Detail the Cell Level Parameters with

incorrect Values. Complete Table Below.SLAKPINotes Missing Ncells from newly integrated sites

should be verified with the C&T enginneer

Example Table

Parameter NameNetwork Value

Default Setting

Date Corrected

Clarify Case

No Errors Found N/A N/A N/A N/A

5.9 Detailed Statistical AnalysisProcess ID Statistical Analysis of CS / PS

PerformanceInputs VPW, Visa Scripts, GPD, Mycom, OSS

Dumps.Process Definitions Use Visa Scripts/ Mycom Scripts to

determine the following Performance

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metrics for the APR cells.Outputs Accessibility

CSCell Level Performance- CSSR%RRC Setup Success ( CS)PSCell Level Performance- Accessibility ( PSSR)%RRC Setip Success ( PS)RetainabilityCSCell Level Performance-DCR Worst CellsCell Level Performance- Drop Reason for Worst Cells.CS64 Drops ( Rab Release)PSPS Drops ( Rab Release)HSDPA Drops ( HS Rab release)Cell Level Performance- Channel Switch FailuresMobilityHandovers- 3G –3GHandovers IRAT 3G – 2GDrops due to Handover Failures- Hard Handover failures, Soft Handover Failures,Handover Requests Vs Completed HandoversDrops to UL sync.IRAT Ho Success.IntegrityDownswitch Channel % SuccessUpswitch Channel % SuccessUpswitch ThroughputCapacityASE AnalysisCell Load ( carried Traffic/ Noise Rise)Cells DL Throughput.Area Throughput.Cells with DL Power LimitationsCells with DL Code Limitations

SLAKPI See Below.Notes Detail major contributing sites to overall

poor area performance. Detail any known core network issues.

Current 2006/ 2007 KPI’s

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Network / Area

94.8696.13G PS CCSR

Network / Area

3.0133G PS DCR

Network / Area

97.899.13G PS CSSR

Network97.3973G VT CCSR

Network0.7713G VT DCR

Network98.15983G VT CSSR

Network / Area

0.750.853G Voice DCR

98.31

99.05

Current Performance

Network / Area

Network / Area

Scope

98.253G Voice CCSR

99.13G Voice CSSR

Target


5.10 Drive Trial AnlaysisProcess ID Drive Test Performance Analysis. Drive

Trial ResultsInputs Recent Drive Trails Results.Process Definitions Analysis of Drive Trails Results using

ACTIX analyser ( or other analysis tool). Show locations of Drops and Failures.

Outputs Plot of RSCP, EcNo for Drive Route.Plot showing location of Dropped calls and call failures.Summary of call performance (DCR, CSSR)Summary table showing reason and resolution of call drops/failures.

SLAKPINotes

5.11 ConclusionsProcess ID Overall ConclusionInputs Statistics, Drive Test Analysis,C&T

Comments, VF StrategyProcess Definitions Draw together conclusions from previous

sections to focus on Issues. IncludeOverall RF EnvironmentAccessibility CS

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Accessibility PSRetainability CSRetainability PSMobilityIntegrityCapacity

Outputs Final Conclusions in preparation for Recommendations. Draw together all the findings in the APR.

SLAKPINotes

5.12 Previous APR reviewProcess ID Review Previous APR actionsInputs Current APR results and findingsProcess Definitions Detail the actions from the previous APR

and confirm whether they were completed or if they are still required/not actioned.

Outputs List of APR actions to complete.SLAKPINotes To ensure any actions from previous APR

are completed. If not they become part of the actions for current APR.

5.13 RecommendationsProcess ID Actions/ Changes SummaryInputs Current APR results and FindingsProcess Definitions Detail all the physical changes and

recommendations to be actioned as a result of this APR .

Outputs Table summarising all the physical changes and recommendations to be actioned as a result of this APR .

SLAKPINotes If table is not suitable for the proposed

changes then use a Bullet point list with a full description of requirements.

5.14 Ongoing ActionsProcess ID Ongoing ActionsInputs SAT, CN Team, Process Definitions Identify any other actions ongoing in the

area that may affect the performance of the area under review. Actions to include may be RNC upgrades, site cutovers, SW upgrades etc.

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Outputs Detail any other issues that effect the ARP results

SLAKPINotes

5.15 Update APR TrackerProcess ID Update APR Tracking spreadsheetInputs APR Results/ActionsProcess Definitions Complete spreadsheet for tracking.Outputs Updated Spreadsheet with new actionsSLA Within 1 week of completed APRKPINotes Location of APR spreadsheet South

RegionTBCLocation of APR Spreadsheet North Region\\Ntfiler2\north_optimisation\Optimisation\Performance_Management_Team\APR

5.16 Publish APRProcess ID Publish APRInputs APR ReportProcess Definitions Publish the APR. Ensure its stored in a

single location and is available to all users.Outputs Report Available for ReviewSLAKPINotes Location of APRs North Region

\\Ntfiler2\north_optimisation\Optimisation\Performance_Management_Team\APR

5.17 Post APR ReviewProcess ID Post APR ReviewInputs Current APR results. APR ActionsProcess Definitions Review of the area Statistics After the

recommendations and changes have taken place.

Outputs Results showing the improvements in the Performance of the area after the APR actions are completed. Detail improvements in the following categories:Overall RF EnvironmentAccessibility CSAccessibility PSRetainability CS

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Retainability PSMobilityIntegrityCapacity

SLAKPINotes

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6 Process Role Definition6.1 Optimisation Engineer

Role Description The Optimisation Engineers are responsible for the monitoring & performance improvement of the 3G UTRAN network at both RNC and Cell Levels.

They must use their skill and experience to collect & analyse network data, identify problems, and recommend solutions.

They are required to understand and use various systems, applications & tools to perform their role

Responsibilities Use of all required systems, applications and tools

Collection of data

Analyse of data

Recommend solutions

Produce reports

Required skill-sets Optimisation Specialist

7 AcknowledgementsTitle Role & Responsibilities

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