Actix LTE.pdf

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Analyzer LTE

March 2011

Training Course


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Analyzer LTE Training

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The content of this manual is provided for information only, is subject to change without notice, and

should not be construed as a commitment by Actix. Actix assumes no responsibility or liability for any

errors or inaccuracies that appear in this documentation.

Copyright Actix 2011. All rights reserved. All trademarks are hereby acknowledged.


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Contents

INTRODUCTION......................................................................................... 5

SCOPE OF THE COURSE............................................................................................. 5WHO SHOULD ATTEND THIS TRAINING COURSE? ............................................................... 5PREREQUISITES..................................................................................................... 5

Hardware requirements ................................................................................... 6AIM OF THE COURSE................................................................................................ 7HELP FILE............................................................................................................ 7

ACTIX DESKTOP POST-PROCESSING SOFTWARE................................................... 8

WHAT ARE SPOTLIGHT AND ANALYZER? ......................................................................... 8Key features .................................................................................................. 8

SPOTLIGHT............................................................................................. 10

SOLVING COMMON NETWORK PROBLEMS WITH SPOTLIGHT.................................................. 10Spotlight features ......................................................................................... 11Whats in Spotlight?...................................................................................... 11Navigating around Spotlight ........................................................................... 13What can you do with Spotlight? .................................................................... 14

GETTING STARTED................................................................................................ 15EXPLORING WORKSPACE......................................................................................... 16

Summary Dashboard .................................................................................... 16LTE Report ................................................................................................... 18Issues Panel................................................................................................. 20

CELL COVERAGE ANALYSIS...................................................................................... 21

LTEFAILURE:DROPPED CONNECTION ANALYSIS............................................................ 23DATA SERVICE ANALYSIS........................................................................................ 30THROUGHPUT ANALYSES......................................................................................... 32

Example 1: High Throughput Analysis ............................................................. 33Example 2: Low Throughput Analysis .............................................................. 35

ANALYZER.............................................................................................. 39

WHAT CAN YOU DO WITH ANALYZER? .......................................................................... 39GETTING STARTED................................................................................................ 40EXPLORING WORKSPACE......................................................................................... 41

VIEWING DATA.................................................................................................... 44

Displaying on chart ....................................................................................... 44Displaying on Map ........................................................................................ 47Displaying in a Table ..................................................................................... 48

PERFORMING LTEANALYSES.................................................................................... 50StateForm ................................................................................................... 50Protocol Stack Browser .................................................................................. 55

PERFORMING CUSTOMIZED LTEANALYSES................................................................... 56About Queries .............................................................................................. 56Binned Query ............................................................................................... 57Histogram .................................................................................................... 58Crosstab Query ............................................................................................ 59

REPORTING NETWORK PERFORMANCE......................................................................... 62Creating Custom Single File Report ................................................................. 62

Creating Custom Multiple Files Report ............................................................. 65


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Superstream ................................................................................................ 69Repository ................................................................................................... 71

SAVING YOUR WORK............................................................................................. 77

Saving Screen Layouts .................................................................................. 77


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Introduction

Scope of the courseTheAnalyzer LTE TrainingCourseprovides a comprehensive overview of Spotlight and Analyzer forLTE. The goal of the course is to give an understanding of the capabilities of the system and how itcan help users to improve quality of service for their network subscribers. Advanced users will beintroduced to new network applications.

The instructors for this course are experts in using Actix solutions to increase productivity, and arefamiliar with the challenges faced by engineers working in cellular/PCS environments.

Class size is limited to ensure that everyone receives extensive one on one instruction. Participantshave many opportunities to ask questions relevant to their particular optimization needs. Uponcompleting the course, participants will be able to use what they learned in class to identify andsolve real network problems.

TheAnalyzer LTE Training Coursebegins with a high-level presentation of the Actix platforminterface and its capabilities. We will then cover how existing optimization processes can betailored to the specific needs of the participants.

Who should attend this training course?

RF Engineers responsible for enhancing cellular performance and implementing wirelesssystem optimization.

Engineers looking to further understand the application of log file data in optimizing

networks.

Experienced technicians involved in field optimization.

Anyone looking to maximize the return on investment in Actix software.

Prerequisites

Familiarity with network infrastructure and operation of the air interface.

A general understanding of drive test and call trace collection and post-processingmethodology and advantages/limitations with each dataset.

Access to Actix software and a familiarity with the Actix software platform.

Basic computer literacy, including familiarity with Windows and MS Office applications.


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Hardware requirementsA computer that should meet these minimal hardware requirements:

Item Requirement

Processor 1+ GHz

Framework SQL Server 2005 Express Edition SP2 and .NET 1.1 &3.5 are installed automatically in the standard Actixinstallation.

Operating System Windows 7 and Windows 2008 Server with Service Pack3 or later.

Windows Server 2003 Standard, Enterprise, orDatacenter editions with Service Pack 1 or later.

Windows Server 2003 Web Edition SP1.

Windows Small Business Server 2003 with SP1 or later.

Windows Vista with SP1 or later.

Actix software runs on 64-bit Windows as a 32-bitapplication.

Memory 1+ GB

Hard Disk 2 GB

Other Requirements Microsoft Internet Explorer 6.0 SP1 or later.

Microsoft Office XP or above (required by ActixSoftware)

Table 1 Hardware requirements


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Aim of the courseAfter this course, you should be able to:

Appreciate common network problems and how they are classified in Spotlight andAnalyzer.

Configure Spotlight and Analyzer to work with your data and methodologies.

Appreciate pre-defined Spotlight and Analyzer Reports.

Appreciate different analyses methods (Event Based and Radio Network Analyses) inSpotlight.

Appreciate manual analyses (create and customize your own methods, queries andreports, repositories and screen layout) in Analyzer

Use Spotlight and Analyzer to analyze problems in data sets of differing sizes.

Appreciate the role thresholds perform in Spotlight and Analyzer, and how to modify them.

Spotlight related

From the Repository Analysis - Drilldown, you should be able to:

Add extra data during the analysis.

Save the project file.

Create and save your own template for your project.

Start Spotlight and reload the project file.

Drilldown problem by File or Time to message level with or without loading the whole file.

Perform different analyses based on handset and scanner data.

Perform Low Throughput analysis for LTE.

Help FileThis training manual mainly contains LTE-related information and features in Spotlight and

Analyzer. For basic features of Spotlight and Analyzer, or information regarding how totroubleshoot network in other technologies, please refer to HELPin Spotlight or Analyzer, whichcan be accessed by clicking on the Help menu in the main menu. You can look up informationabout a particular topic either by choosing an item from the index or by entering keywords toperform a search.

Specific information such as attributes (engineering parameters) can be found in AttributeReference.You can look up an item in the alphabetized list, or you can open the Context Helpwindow, and then click on an item in the Workspace.


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Actix Desktop Post-Processing Software

What are Spotlight and Analyzer?Analyzer is an Actix desktop software solution for expert drive test post-processing, supportingnetwork optimization and network troubleshooting. It supports 2G, 3G and even LTE rollouts withflexible and powerful drive survey analytics. Analyzer includes the Spotlight module for automatedpost-processing analyses.

In Spotlight, you can follow your own investigation in a logical flow throughout the various analysispages and reports. You begin by browsing the summary dashboard, the map and the appropriatereport(s) for the loaded data, which might indicate the presence of one or more problems. Cellcoverage can be investigated within a defined boundary, RSRP and RSRQ thresholds in RadioNetwork Explorer, while connection drop, task failure and low throughput analyses can beperformed using Event Explorer. The issues panel provides diagnostics, measurements and links tothese critical or important issues.

Analyzer provides the flexibility and tools to help you to perform manual analyses at any time. Thiscan be done by customizing forms, queries, reports and repositories.

By combining both Spotlight and Analyzer, you will be able to investigate and troubleshoot yournetwork problem thoroughly for the most detailed information.

Key featuresThe following key features are available for LTE in Spotlight and Analyzer:

Support multi-vendor, multi-technology drive test format:Spotlight and Analyzer support the latest HSPA+ and LTE decodes from all of the majorvendors.

Detailed network measurements:Spotlight and Analyzer support measurement of thelatest HSPA+ and LTE features including: CQI, frame usage and modulation usage.

Flexible voice and data service KPIs:Spotlight and Analyzer support powerful topdown KPIs allowing operators to evaluate the quality of different voice and data services asperceived by end users.

Full RF analysis:Spotlight and Analyzer provide automated drop call diagnosis andintegrated radio network analysis to diagnose cell coverage, missing neighbor, andinterference or pollution problems.

Layer 3 analysis:Analyzer provides embedded Layer 3 analysis, allowing detailedmessage-level analysis of drive survey results.

Data session analysis: Spotlight and Analyzer provide detailed data session analysis toidentify if poor data service performance is due to poor radio quality or congestion on thecore or radio network.

IP packet inspection:Analyzer provides full IP layer decodes and session analysis toprovide full inspection into the IP traffic layer.

Performance Reports: Analyzer allows you to create and customize reports for you toquickly create RF analysis and acceptance reports.


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What can you do with Spotlight and Analyzer

Setting preferences, aggregating dataand loading logfiles

Exploring workspaceby examining theloaded data

Viewing Data by displaying in maps,charts, tables or reports to facilitate easy

analysis

Reporting Network Performance bypreconfigured or customized report(s)

and repositories

Saving your workor preferred layoutusing screen layout feature

Selecting Spotlight or Analyzer

Creating projectsusing LTE templates, settings,LTE thresholds and loading logfiles

Exploring workspaceby viewing summarydashboard, re orts and issues anel

Viewing Data by selecting the related categoryand issues. The detailed diagnostics and

information will be displayed in customized mapsand StateForms to facilitate easy analysis

Performing LTE analyses bydrilling down to the selected issue

to find out the cause

Performing customized LTE analyses

by opening pre-defined analyses and/orcustomizing new forms and to further

investigate the issue in Spotlight

Do you want to performcustomized LTE analyses?

No Yes

Yes

Getting startedby configuring cell site information

Performing LTEanalyses based on

preconfiguredapplications

Performing customizedLTE analyses usingqueries such as filter,

binned, histogram, crosstaband event queries

Closing down Spotlight or Analyzer

Spotlight Analyzer

If more detailed

analyses required

Create a custom report


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Spotlight

Solving common network problems with SpotlightWith the Seek-See-Solve approach, Spotlight is designed to allow you to follow your owninvestigations throughout the various analysis pages and reports. However, a typical path throughSpotlight is to start from the Summary Dashboard, examine the summary map and then theappropriate report for the loaded data, which might indicate the presence of one or moreproblems. Spotlight breaks these problems down into two groups:

criticalissues, where an event has occurred that discontinued a call;

importantissues, where the quality of service has been reduced without necessarilyending any calls.

Cell coverage, interference problems and LTE visualization can be investigated from the Radio

NetworkExplorer analyses (links to these are shown as Important Issues in the Issues panel ofthe Summary Dashboard). These then point you at specific problem events which you can examineand diagnose using the Event Explorer(links to these failure events are shown as Critical Issuesin the Issues panel).


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Data ConfigurationA step-by-step wizard guides the user to configure thresholds and cellrefs, and also toselect data to process into the repository.

Summary DashboardFrom the Repository Dashboard, the user can choose a problem (criticalor importantissues) to further investigate using either Event-based or Radio Network analyses.

Spotlight ReportIdentifies critical and important issues, and provides links to summary statistics of theloaded data files.

Event Investigation/AnalysesProvides a breakdown of the critical and important issues by filename and handsetidentifier. These tabular pages are reached through links on the Summary Dashboard.

Radio Network Investigation/AnalysesProvides a breakdown of the important issues by filename and handset identifier. These

tabular pages are reached through links on the Summary Dashboard.


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Navigating around Spotlight

On top of the page, above Summary Dashboard, the navigation bar allows you to movearound in Spotlight. It also provides some useful functions from any stage of your analysis.

Return to Summary

Return to Event Explorerpage

or restore page if you are

Open the Choose an

Engineering Process

dialog, allowing you to

select another Spotlight

project.

Filter out files and

stream from all

Return the

current page to

Load additional files

to the current

Display help for

the current page.


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What can you do with Spotlight?The flow chart below illustrates briefly how Spotlight can help you in your day-to-day work.

Creating projectsusing LTE templates, settings,LTE thresholds and loading logfiles

Exploring workspaceby viewing summarydashboard, re orts and issues anel

Viewing Data by selecting the related categoryand issues. The detailed diagnostics and

information will be displayed in customized mapsand StateForms to facilitate easy analysis

Performing LTE analyses bydrilling down to the selected issue

to find out the cause

Performing customized LTE analyses byopening pre-defined analyses and/orcustomizing new forms and to further

investigate the issue in Spotlight or Analyzer

Do you want to performcustomized LTE analyses?


Starting up Spotlight

Closing down Spotlight

Performing

manual analyses

in Anal zer

NoYes

Yes


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Getting StartedBefore you begin, ensure that you have a validSpotlight/Analyzer license, a cellrefs that contains yournetwork information and a set of data you want toinvestigate. It is crucial that you follow thefollowing steps to avoid inaccurate results or haveto go through these steps again forreconfiguration later.

Lets begin by performing the following steps:

1 Start up Spotlight.

2 Create a new project by click on the New

Projectbutton.

3 In New Project Step 1: Key in your project name, select a

suitable LTE templateand click on the Nextbutton proceed to New

Project Step 2.

4 In the page New Project Step 2, select your cellrefs.

Spotlight is a map-centric product and you must have a valid cellrefs file corresponding tothe drive test data.You may want to change settings, i.e. file location, display, time, neighbor list etc, orchange the thresholdsfor event detection. There are two important measurements in LTEcoverage: RSRP and RSRQ.The corresponding thresholds are:

For Handsets: LTE_UE_PoorRSRP_Threshold & LTE_UE_PoorRSRQ_Threshold

For Scanners: LTE_Scan_PoorRSRP_Threshold & LTE_Scan_PoorRSRQ_Threshold

These thresholds are settings for format specific advance configuration options.

LTE = bothUE and scanner

If you prefer to create yourown template with your owndevices, network KPI,

reports, attributes, queries,binning and filter, click here.Refer to HELP on how tocreate a new template.

LTE_UE_PoorRSRQ_Threshold and LTE_Scan_PoorRSRQ_Threshold


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Note It is important to set your thresholds before loading the databecause it will affect the analysis, diagnosis and display data inSpotlight.

5 In step 3: click on Add Files button to load your log filesor data.If you prefer to load the entire folder, click on Add Folder button.Click on Done button to begin saving settings and loading files.

Exploring Workspace

Summary DashboardAfter the data is loaded, an overview page or Summary Dashboardisdisplayed. A Summary Dashboardshows an overview of the data loadedin the current Repository project on a per device basis. If you haveconfigured multiple devices during the template configuration phase, aseparate tab per device will appear in the dashboard.

As you can see below, this page is divided into three parts:Top Panel, Issues Panel, andMap.

Top Panel

This panel contains a summary table of the loaded dataset information. You can view the LTEreport (Data Service Analysis Report) or go to the Event Explorer(event-based analyses, i.e.dropped connection, failed connection) page or Radio Network(radio network analyses, i.e.coverage, low throughput) page.

If the view is too small, right-click on astream and select Zoom to layerto have

a closer look.

Click on the globe tochange your backgroundmap properties

Top Panel

Issues

Panel

Map


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Issues Panel

This panel lists all the critical (event based KPIs) and important issues(radio network analyses)that need further investigation. Click on any KPI that you might want to further investigate.

Map

The map is an integral part of the interface representing the drive route with the default attributeplotted (RSRP or the application throughput).

Zoom In

Select

Pan

Layers

Map

Zoom OutArea

SelectLegend

Swap Legend

to other side of

map

Annotations Layout

AttributesRegion

FilterPrint

Print

Preview

Batch

PrintingCell

Sites

Direction

Use enhanced

drawing styles


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LTE ReportThe Spotlight LTE report (Data Service Analysis Report) shows a quick overview of your

network performance. It is divided into a Reportsheet and different activities (FTP, HTTP)sheet(s), which consists of FTP, HTTP download information (statistics based on status and typesof analyses) and application throughput.

The report sheet contains a technology independent overview of all the activities, while the activitysheet contains radio KPIs for all technologies.

Report sheet with technology independent overview


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FTP sheet with radio KPIs for LTE


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Issues PanelThis panel lists all the critical and important issues occurring in the dataset and allows you to

investigate an issue or troubleshoot a problem in more detail.

Category

First, you have to select a category, indicating which type of analysis or information you want tobe displayed on the issues panel. For example if you select LTEas your category, all event-basedcritical issues and radio networks important issues will be displayed (as shown below). If youchoose DSA Task Summaryas your category, you will get a list of tasks summary which containsthe FTP, HTTP, Web browsing Uplink and Downlink success rate and throughput measurements.Well go through these categories again later in the Throughput Analysis chapter.

Critical Issues

The critical issuessection provides an overview and the link to the drive in terms of failureevents. To investigate the KPIs and the cause of the dropped connection, click on the link to go to

the Event Dashboard.

Important Issues

On the other hand, the important issues sectionprovides an overview and the link to thecorresponding radio network analysis page. For further investigation, click on the link to go to the

Radio Network Dashboard.


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Cell Coverage AnalysisThis analysis allows you to determine the coverage footprint for the cells in your

networks, visualize the best serving cell, and see if any cells are overshootingtheir coverage boundary and the neighbor cells. In the following example wewill use the scanner data to perform this analysis.

Lets begin to explore our workspaceby performing the following steps:

1 In Summary Dashboards Issues panelon the left, select

LTEas your category and click on the Poor Coverage link (from scannerdata). This will bring you to Radio Network Explorerpage.

2 In the Cell Coverage Analysis page, again, it is divided into three parts:

top panel with the table with related information and measurements, a side panel withstatistics and charts regarding the quality, distance and cell visualization,and a map.

You can also click on the RadioExplorericon to open the CellCoverage Analysis page.

At a glance, we cansee the overallquality of the entire

areas coverage.

LTE thresholdsset beforeloading data.

Change the map unit, mapbackground properties (road oraerial), and zoom in/out to help

you to view your map.

You can click on the column header to sort yourinformation, or click on an individual row to view aparticular sectors coverage. You can even perform aspecific analysis, filter your information, or choose a

specific attribute or event to be plotted in the map.


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3 It is wise to filter out the unimportant information, i.e. numbers of samples < 50 or

distance > 15km. To do so, create a filter by clicking on the Filters(#)link.

Set your criteria and click on Add Filter. Click OKto apply filter.Sort the column again after youve applied the filter.

4 Select an interesting sector to view in detail. The map and left panel will be updated

accordingly. The red circle represents your pre-defined boundary in Thresholds settingsand any data points outside this circle represent overspill.

You can also change the cell-site properties to plot on the map according to the servingPCIs color.

Sample statistics and charts from side panel:

Click on the multi-cell icon todisplay the RSRPs KPI on map

> Beam= Percentage of points outside the cell beamwidth>180 Beam= Percentage of points outside an imaginary beamwidth of 180 degrees


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5 Make use of the additional features to help you visualize the coverage footprint of your

network.

Additional Features

LTE Failure: Dropped Connection AnalysisThe types of failed events (Connection or Handover failures) and task failures that you

can investigate are LTE Dropped Connection, LTE Connection Setup Fail, LTE Slow

Handover, DSA Failure Task Fail and DSA All Services and Tasks (including Ping).This analysis allows you to study an LTE call connection failure and furtherinvestigate the cause of this critical failure.

Lets begin to explore our workspaceby performing the following steps:

1 In Summary Dashboards Issues panel(left panel), select

LTEas your category and click on the Dropped Connection Rate link thatyou want to troubleshoot. This will bring you to the Event Explorerpage.

You can also click on theEvent Explorericon toopen the Event ExplorerAnalysis page.

Where seencoverage

footprint where the cell couldbe seen during the drive(s).

Best seencoverage

footprint where the cell wasthe best server during thedrive(s).

To create a filter


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2 In the Event Explorer page, the top panel contains of site information with numbers of

failures (depending on the problem), a side panel with a list of diagnostics (in a table andalso detailed information) of what causes the fail, and a map to help you to visualize where

the problem occurred.

3 Lets say we want to confirm if the dropped connection is caused by interference First of

all, scroll down (side panel) to read more about the detail event diagnostics.

According to the diagnostics and measurements, when the connection dropped, the qualitywas bad (-20 dB) but the signalstrength was reasonably OK (-89dBm).The CQI value was low and > 86% ofthese CQI values were lower than 10.

We might now replay the file aroundthe time of the problem to see how

RSRQ ended up being so low whenthe connection dropped.

To investigate this, select the row inthe diagnostic table and click BeginDrilldownto perform connectiondropped analysis.

You can click on the column header to sort your information, or clickon an individual row to view a particular failed event. You can evenperform a specific analysis, filter your information, or choose aspecific attribute or event to be plotted in the map.


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4 This will bring us to the Drilldownpage. As you can see, Spotlight displayed the

appropriate forms, Protocol Stack Browser (PSB) and map plotted with the relatedattributes. This will help you to understand what has happened between 5 seconds before

and 30 seconds after the connection was dropped. Lets take a closer look at each of theforms and the map.

Scroll down and select the attribute you want to delete oneat the time. Delete Event_Task_Fail, Event_Task_Startand Event_Task_End.

Click OKto save.

Click on to toggle back to View mode.


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5 ExamineTask Chart. There is a lot of Ping information displayed on the chart and it is

almost too cluttered to view. To get a cleaner view, edit the chart by clicking on totoggle to Design mode.

6 The Time Chartis looking cleaner now.

Move your mouse over the chart to view individual measurements.

7 Now lets take a look at the Protocol State Browser. If we scroll up to view what

happened before the connection was dropped, notice that about 1 to 2 seconds before thedrop, the neighbor cells has much better signal strength. Requests for changing servingcell have also appeared a few times. There should have been a handover but unfortunatelyno handover occurred.

Just before the drop,

the throughput and CQIvalue fell from averageto 0.

The NACK Rateappeared to be 100%and the modulation MCSdropped from 8 to 1.

At the same time, theResource Block (RB)allocation increased

from 4RBs (8% of thesystem bandwidth) to22RBs (highest at 44%of the systembandwidth).

The sharp degradationin the radio conditionscaused the radio link todrop and the RRC

connection to drop alittle later. We also seethat the radio conditionsimprove just after the

drop, which prompts usto look further into theissue in Protocol StackBrowser.

Connection dropped here

To edit, add and remove columns,

click on the (edit columns) icon.

In this example, it makes sense to

add the serving PCIs RSRP and bestneighbors RSRP columns to comparetheir signal strength.


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8 Continue to look at the map. You can plot an extra attribute on the map by clicking on the

Attributesicon. From the Edit Attributesdialog, Addthe attribute from the AvailableAttributescolumn and click OKto show it on the map.

Click on a beam to see the current serving PCI (solid line) and which oneis the neighbor cell (dash line).

Move your mouse over to any measurement or dropped connection onthe map to view more detailed information.


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If for some reason the layers are overlapped or you want to rearrange them, click on the

Layers icon to reorder them.

9 Click on a point in the map and now take a look at the StateFormnext to the map.

All measurements and related information will be displayed on the StateForm. Again, if youwant to modify the form, right-click on the form and toggle Design Mode. Edit the form,save it and toggle back to View mode. For example, change the RIattribute toThroughput.

10 It is useful to synchronize your view, i.e. to show the same map and StateForminformation at the same time. Click on a point in the map to synchronize with theStateForms display. You can even step through the whole drive route by clicking on the

playbutton. If necessary, change the speed of playback using the slider.

Click here to select your attributefrom the attribute nodes.

You must select the correct stream to synchronize!


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11 Make use of the additional features to help to you to visualize and further investigate yourdropped connection.

Additional Features

Note Well be troubleshooting the same dropped connection usingAnalyzer, where youll be performing more customize analyses andcreating reports.

To create filter


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Data Service AnalysisThis analysis allows you to analyze and investigate the throughput during data transfer by using

the Data Service Analysis (DSA) page.

The followings issues and tasks you can investigate in a DSA Failurepage (default) are:

Service Setup Failure rateService is used to refer to the end-to-end connection between the UE and the core

network. A Service Setup Failure is detected when the UE attemptsbut failsto get an IPaddress (for instance, if a PDP Context Activation procedure fails).

Service Drop RateA Service Drop is detected when the UE loses the end-to-end connection to the corenetwork (for instance, after a Routing Area Update procedure failure).

Task Failure RateTask is used to refer to any data upload or download; for example, an FTP put or get,browsing a web page or a ping test. A failure is detected when the Task did not complete(for instance, if the UE failed to download a file in case of a FTP DL test).

Percentage of FTP/HTTP upload/download task below the absolute throughputthreshold valueAn absolutethroughput threshold is the threshold for a UE would only spend 100% for atask using one technology.

Percentage of FTP/HTTP upload/download task below the composite throughputthreshold value.

A composite threshold is calculated based on the UE usage in % of a combination ofdifferent technologies used for a task. For example, consider a data download task, wherethe UE spends 70% of the time in HSPA and 30% in LTE. The composite throughput is:

(70% x ApplicationLowTput_HSDPA_DL_Threshold) + (30% x ApplicationLowTput_LTE_DL_Threshold)


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From the Select Categorydrop down list in Summary Dashboard you can select these threeDSA categories:

DSA Failure DSA All Services and Tasks DSA Summary

We will perform some Throughput Analysesby viewing the DSA All Services and Tasks

category in the next chapter.

Click on Display All # Tasksto

view all related information inthe Event Explorer page.


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Throughput AnalysesThis analysis allows you to analyze and investigate the throughput by using the DSA

Services and Taskspage. Click the Display All# Tasklink to view the relatedinformation in Event Explorer page. In the following examples, well beviewing the FTP DLlink.

In the side panel in Event Explorerpage, you can find a list of FTP tasks with throughputmeasurement and status. The four typical statuses are:

OK = Successful or completed

D = Dropped

I = Interrupted, the task was on-going whenthe file ended

C = User Cancelled

Interrupted and User Cancelled tasks are neitherfailed nor successful, and therefore are not taken intoaccount in the KPIs.

Click on any of the headers to sort your information accordingly. For example, to identifyworst/best performing tasks, you could also sort by Throughput (Tput DL). To only viewsuccessful or completed tasks, you should sort by Status.

If you continue to scroll down, below the Drilldown-Throughput-Status table, you can see someuseful data service statistics. The information displayed depends on the task type (upload ordownload), as well as the technologies that the UE experienced during the task.

Once you are ready to proceed, click on the Drill Downcheckbox and follow by clicking the BeginDrilldownbutton to begin your analysis. Well continue to analyze high and low throughput in thefollowing sections.


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Example 1: High Throughput AnalysisIn LTE, A throughput > 10 Mbit/s is considered a high throughput.

Lets take a closer look at one of the high throughputtasks.

In the Drilldownpage:

The duration of task reported by thelogging tool is about 30 seconds(which is the time difference between

Task Start and Task End events in

the StateForm), but the duration ofthe data transfer is only 4.19 secondsduring the UE was in LTE connectedmode (see StateForm).

In the beginning of the task (before the FTP download), the

CQI value was average and Modulation was not very high.

After the handover, the radio quality was gradually improved

and when the transmission began, the application throughput

and CQI value were high, MIMO usage was up to 100% and

Frame Usage was at 100%. See the next page for more

detailed information.

Sort by Throughput(Tput DL).Select the row(s) you want tofurther investigate and click on

the Begin drilldownbutton togo to the Drilldownpage.


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Move your mouse over any point of the transmission to view detailed information.

In this LTE example, we notice the followings:

High throughput(18 Mbps for application throughput and 26 Mbits/s for Layer 1 DL throughput).

Average CQI (14.0) throughout the FTP download.

Very good modulation (64 QAM and most of the time MIMO usage at 100%) during FTPdownload.

Good radio quality and signal strength during FTP download.

High Frame Usage (almost 100% during transmission).

Good system bandwidth allocation at >90%(23 Resource Blocks out of a maximum of 25 on this network).

Very low NACK Rate (lower than 6% during data transmission).

If you need to further investigate the throughput, examine the PSB, map and StateForm nextto the task chart.

High throughput


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Example 2: Low Throughput AnalysisIn LTE, a throughput < 5 Mbit/s is considered low.

Lets take a closer look at one of the low throughputtask, preferably one

with an OKstatus.

In the Drilldownpage:

On the left side panel of the Drilldownpage, the Key Issuessection explains the reason ofthe low throughput is due to a reselection to HSDPA from LTE during the transmission. Theredirected reselection from LTE to UMTS caused the UE to be idle for almost 21 seconds.

First sort table by Status,

follow by Tput DL.

Tput DL = -1 means unknownor no measurement

Select the row(s) you want tofurther investigate and click onthe Begin drilldownbuttonto go to the Drilldownpage.

The average throughput achieved on LTE is low butOK (about 3 Mbit/s). Modulation and Coding Schemevalues range from 0 to 20, with an average of 9. The

spread of values is explained by the Task Chart,where we can see that the radio conditions weregood initially and worsen progressively until the UE isredirected to UMTS.


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Lets take a look at the Task Chart:

In this LTE example, we notice the following:

High throughput in the beginning, but degraded very quickly till 0, at which point the UE isredirected to UMTS. Once the reselection was completed, it continued to transmit in alower throughput in HSDPA.

Fairly low Frame Usage in HSDPA mode, and inverse relationship between CQI and FrameUsage in HSDPA (i.e. the Frame Usage goes up when CQI goes down) whilst thethroughput remains flat; which could indicate that the throughput is not limited by the air

interface.

Good system bandwidth allocation (~90%) in both LTE (number of RBs) and HSDPAmodes (number of codes).

Much lower NACK Rate after the reselection.

As a result, the FTP download was completed even the data is transmitted with lowthroughput. If you need to further investigate the throughput, examine the PSB, map andStateForm next to the task chart. Resize, dock or even move them around for bettervisualization. To restore the layout, click on Drilldown link on the top left of the screen.

The FTP download started in LTE. Itstarted with a slightly above average

throughput, good CQI, high MIMOusage and good Frame Usage.

Following the redirected reselectionfrom LTE to UMTS, the UE stays idlefor a while before reconfiguring toHSDPA.

The task completesnormally in HSDPA.

Low throughput


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Other Low Throughput Analyses Examples:

The following screenshots explain different low throughput analysis scenarios and situations. Most

of the time, the application throughputs value is correlated to the CQI value, but in certaincircumstances, this might not be true.

Example 1

When the radio quality degraded, so did the throughput value, the CQI values and MIMO usage.Now take a closer look at the correlation between the MIMO usage and the Frame Usage. Sincemore data is being transmitted using MIMO, less frame usage is required (lower frame usage %).

See example 2 for correlations between the CQI, Resource Block allocation and Frame Usage.

When there is almost no MIMO transmission, the Frame Usage % increases to almost

100% because the network has to transmit more frames to compensate the rate.


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Example 2

The following Task Chart shows a more erratic application throughput (between 0 and 10 Mbit/s)but CQIs value is about average (less dramatic than the throughputs value).

Now take a closer look at the correlation between the CQI, Resource Block allocation and FrameUsage %. As the CQI value increases, the # of RB decreases and so does the Frame Usage.

As for the radio condition, the radio link quality is good (good RSRQ and RSRP value).In other words, the air interface is good (and so can deliver more throughput) but the network hasnothing to transmit at this particular time. That explains the erratic application throughput.

In this case, we can conclude that radio link quality is not the limiting factor here.


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Analyzer

What can you do with Analyzer?A flowchart depicting/describing the best practice when troubleshooting a network problem usingAnalyzer:

Starting up Analyzer

Closing down Analyzer

Setting preferences, aggregatingdata and loading logfiles

Exploring workspacebyexamining the loaded data

Viewing Data by displaying in maps, charts,tables or reports to facilitate easy analysis

Reporting Network Performance by preconfiguredor customized report(s) and repositories

Saving your workor preferred layoutusing screen layout feature


Performing LTEanalyses based on

preconfiguredapplications

Performing customized LTEanalyses using queries suchas filter, binned, histogram,crosstab and event queries


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Getting StartedBefore you begin, ensure that you have a valid Analyzer license, a cellref

that contains your network information, and a set of data you want toinvestigate. It is crucial that you follow the following steps to avoid

inaccurate results or have to go through these steps again forreconfiguration later.

Lets begin by performing the following steps:

1

Start up Analyzer.

2 Select Tools Preferences from Main

Menu. Locate CellRefs File LocationinChange Preferencesdialog box and change yourCellrefs filename. Normally it is a .txt file.

3 To make sure youve loaded the correct

cellrefs, click on View Display New Mapfrom the main menu to display a new map.If an empty map is displayed, right-click on the map, selectZoom Go to Layer LTE_Cell- Beamwidth PCI or LTE_Site- Site_Name.

The cell sites are now visible.

Close the map after this.

Change map unit by right-clicking on map, Map Units Distance Kilometer(or other unit)


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Exploring Workspace

After the data is loaded, a blank workspace is displayed with the AttributeExplorerdocked on the left panel. If you recall, in Spotlight, you get asummary of your data, issues and problem encountered with diagnosticsand a map. Within Analyzer, you perform manual analysis and therefore nopre-defined screen layout is displayed.

Here is where you can load your data file, create a repository and

perform dataset operations for a quick overview of your network.

indicates that the Attribute Explorer is currently docked on this

anel. Click on the same icon to undock it. This will allow ou to

Here you can view and search your attributes in your data file. You

can also create and save a group of attributes you often use in

Favorites.

Attribute Explorer


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Lets continue to explore theworkspace:

1 Right-click on Loaded Data Filesto load your log files. You can also load files by selecting

File Open Logfilefrom Main Menu or press Ctrl-O.

Note Well be troubleshooting the same dropped connection(previously diagnosed in Spotlight). In the following chapters youllbe performing manual/customize analyses, creating reports andrepositories.

Expand the Loaded Data Files node by clicking on to see all the available attributesin your data file(s).

2 You can select and display the attribute(s) on map, chart, table, workbook etc to view your

data, the same way you view the data in Spotlight.


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Searching for Attributes

Sometimes it can be quite tedious to locate the exactattribute (or parameters) that you need for your analysis.

Use the Find Attributefeature to search theparameter trees. You can perform the search by selectingfrom the main menu: ToolsFind Attributeor Ctrl-shift-F.

The search panel will open as part of theWorkspace Explorer window.

Type in the attribute you want to search for (a whole orpartial word). Click on Find Nextto find the attributeone by one or Find Allto find them all under the nodes.

Creating Favorites Group

It is a good idea to place your most frequently accessedattributes in a Favorites group.

This group can be viewed by clicking on the Favoritestab inthe Workspace. This will save you a lot of time searching forthe attributes under the nodes.

Right-click on the attribute and select Add ToFavoritesto add it into our Favorite Grou


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Viewing DataYou can view your data the same way as you do in Spotlight. In Analyzer you

have to decide which attribute(s) to be displayed and how you want to viewyour data in a way that helps you to troubleshoot or investigate an issue.

Displaying on chartTo take a quick look at the radio condition of the drive data, select anddisplay the RSRQ attribute in a chart. The attribute is located atLTE

Downlink Measurements LTE_UE_RSRQ. Right-click on the attributeand display on chart.

Here you can see the distribution of the radio quality throughout the drive alongwith the timeline.

Data is aggregated and averaged based on time (every one second).

This will affect the view on maps, tables and charts, but will not affect the results of crosstab and

event queries.

In this training, we would like to perform manual analysis with detailed information but not the

a re ated data. To chan e the settin s o to Tools Preferences and chan e the binnin


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Data Aggregation

There are four methods to aggregate data in Analyzer. These different binning modes are based ontime, location, distanceand message.

In order to perform a detailed manual analysis, you should change the binning mode to Messageand make sure Message = 1 so that you can view every message in your data.

Take a look at the chart again. Data is now displayed more densly on the chart.Drag and drop the LTE Event Data RRC LTE_RRC_RRCConnectionDrop attribute to the

same chart to see when the connection was dropped.

The line represents aconnection drop. It

seems likely that the

RSRQ measurement

was very low right


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Next, display the LTE Downlink Measurements LTE_UE_CINRand theLTE Event Data RRC LTE_RRC_RRCConnectionDrop on a new chart.

It looks like the channel interference plus noise ratio value degraded tremendously right before thedrop as well.


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Displaying on MapDisplay the same attributes (LTE_UE_RSRQand LTE_RRC_RRCConnectionDrop) on the map

to visualize the area, radio condition and location of the dropped connection.Zoom in to take a closer look at the 1st drop.

Click on Cell/Sitesicon to color the sector based on PCI.This will help you to identify the serving sectors based on their own color.

Click on the Direction icon to display the direction of the drive route.

Arrange the chart next to the map.

Click at any point in the map to synchronize the measurement with the chart.

At this point, we may also want to replay the file around the timeof the problem in order to see the serving sectors and how RSRQended up being so low when the connection dropped.

Anyhow, the information is still very limited if we only view on themap and chart.

Display more attributes on table, open a StateForm (or any pre-configured analyses), or a Protocol Stack Browser in Analyzer tohelp you to obtain more information.


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Displaying in a TableDisplay the following attributes in a table:

LTE_UE_PCI

LTE_UE_RSRP

LTE_UE_RSRQ

LTE_RRC_RRCConnectionDrop

It seems like there are lots of empty rows in the table and you have to keep scrolling down to findthe next measurement. This problem can be resolved by selecting theHide empty rowscheckbox to hide these empty rows.

You can now see the actual measurement of each attribute on table.If you wish, you can also display these attributes on Workbook (Excel).

Rearrange the map, chart and table in your workspace so that you can see themClicking at any point in the table to synchronize table with the map and chart.

To go to the next

dropped connection,

press Ctrl- .

The radio condition

degraded

tremendously right

before theconnection dropped.

Maybe there is no

coverage or no other


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Problem cant display too many rows in a workbook

You might encounter this problem when you try to display an attribute in a Workbook. For

example, I was trying to display LTE_UE_CINRin a Workbook.

To solve this problem, we can create a filter to remove the empty rows by eliminatingmessages with attributes not set to a value. This can be done by creating a filter query, ormore conveniently by using Attribute Spy.

Attribute Spy

Attribute Spy is a smart feature that allows you to display the attributes set at a message, as wellas to perform some basic operations on them. A lot of the time you might not know what otherattributes are associate to the attribute you have just displayed on a map. For example in ourprevious filter example, LTE_UE_CINR.

To find out information of an attribute at a particular selected point, and even any other associatedattributes, you can select the View Display Attribute Spyfrom the Main Menu. TheAxaAOAttributeSpy Classwindow will be opened.

In your CINR chart or table, click on any point that contains the LTE_UE_CINR attribute. The same

attribute will be selected in the Attributecolumn in the window. Right-click on the attribute andselect Filter Stream where IsValid(LTE_UE_CINR) to eliminate all the empty rows.

Note that after youve applied the filter, the bottomright ofyour screen will be updated. Display the attribute in a workbookagain. This time no warning message pops up.


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Performing LTE AnalysesThere are many pre-configured analyses, StateForms, Protocol State Browser (PSB), Message

Browser, available to help you to investigate an issue. Lets continue to troubleshootthe dropped connection by performing some LTE pre-configured analyses.

In Spotlight section, we have seen the Task Chart (StateForm), PSB displayedin the workspace. Well open up this formand PSB again in Analyzer, andeven create our own form and queries to analyze the dropped connection.

StateFormStateForm allows you to view multiple performance metrics simultaneously.

Used in conjunction with the replay tool, maps, tables, and charts, you canquickly ascertain the values of several radio parameters for problem identification.

To open a pre-configured LTE StateForm, select:

View Forms Data Testing(for UE), or

View Forms LTE Scanner(for Scanner)

Lets open the LTE Radio Charts (same as the Task chart in Spotlight) and take a closer look.To do so:

1 Select View Forms Data Testing DataServiceAnalysis_LTE Radio Charts

StateForm.

2 If the StateForm contains some Ping information (too crowded to look at), toggle to

Design mode and remove the event tasks such as Fail, Start and End.See Step 4 in Spotlights LTE Failure: Dropped Connection Analysisif you cannotremember how to remove the event tasks.


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3 Arrange your StateForm, chart, table and map in the Workspace so that you can see them

all side-by-side. Click on a point in the map or chart to synchronize your view andinformation.

At this point of time, we still cannot conclude what really caused the connection drop.

4 To further investigate this, we should probably look at the neighbors radio condition bydisplaying the best neighbors RSRQ, RSRP and PCI on a table. We should also check outthe RRC and Layer 3 messages for the handset by opening the LTE HandsetPSB. Well

take a look at this later in other chapters.If this is not enough, try customizing your own StateForm (See example below).

Exercise: Create New StateForm

In order to suit your daily work, you can also design a StateForm from scratch. You can do this bycreating a new StateForm file or by adding a new sheet to a current file. We will create a new fileor StateForm (LTE Training Network Parameter StateForm)for this example. The finishedform will look like this:


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If you do not have the StateForms window open, click Tools StateForms Editor.

1 To start a new StateForms file, right-click inside the StateForms Editor and select

Design Mode. The StateForms sheet can now be edited and objects can be added.

2

Addthe LTE_UE_PCI label by clicking the Labelbutton.Click and drag the rectangle in your form.

3 Select the label object and make these modifications in the Attribute Window:

Caption:LTE_UE_PCI

Autosize Font: False

Font Size : 9

4 Repeat steps 2 and 3 for LTE_UE_RSRQand LTE_UE_RSRP.

5 To display the value for LTE_UE_PCI label, click the Attribute Valuebutton thenclick and drag a rectangle to the right of the LTE_UE_PCIlabel.

6 Select the LTE_UE_PCI Attribute Value object and make the following modifications:

Specify Min+Max: True

Bar Range Min: 0

Bar Range Max: 0

Attribute: LTE Downlink Measurements LTE_UE_PCI

Show Value Text: True

Autosize Font: False

Font Size: 9

7 Repeat steps 2 and 3 for LTE_UE_RSRQand LTE_UE_RSRP.

8 To create the Attribute Bar for LTE_UE_RSRQ, click on the Attribute Valuebutton

then click and drag a rectangle to the right of the LTE_UE_RSRQattribute value object.Repeat the same for LTE_UE_RSRP.

9

Select LTE_UE_RSRQAttribute Bar and make the following modifications in the AttributeWindow:

Specify Min+Max:True

Bar Range Min:-25

Bar Range Max:10

Bar Color:

Attribute:LTE Downlink Measurements LTE_UE_RSRQ

Show Value Text:False

Show Min Text:True

Show Max Text:True Show Minor Ticks:True

Delete CopyToggle

Design

Mode

LabelArray

Attribute

Scan

Chart

Cut Paste Select Attribute

Value

Time

chart

Group

Box


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Show Major Ticks:True

Minor Ticks Spacing:5

Minor Ticks Spacing:20

Autosize Font:False

Font Size:6

Border Line:True

10 Repeat the same settings for RSRP except the followings:

Bar Range Min:-130

Bar Range Max:40

Bar Color:

Attribute:LTE Downlink Measurements LTE_UE_RSRP

11

To add the Group Box object, click on the Group Box button, then click and drag arectangle around all of the items in your form.

12 Select the Group Box object and make the following modification in the Attribute Window:

Caption:Network Parameters

Fore Color:Dark Blue

Autosize Font:False

Font Size:14

Default Font:False

Font Bold:True

13

Click the Save Asbutton and save the StateForms file in the StateForms directory and callit LTE NetworkParameters - Trainings.axl.

14 Return to the View Mode by clicking on the Toggle Design Modebutton.

15 Test your new form by displaying a parameter from your logfiles stream on a map. Clickon any point on the map, and see the parameter values for PCI, RSRQ and RSRP appearon your StateForm.

To open your StateForm,

select View Forms

your StateForms name

or right click on your data

files stream name

Display Form your


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Dropped Connection Investigation

So by now we have a pretty good idea about the radio condition and measurements of the serving

cells based on the attributes weve plotted on the chart, map, table and StateForm. Lets take a look at the best neighbors PCI, RSRQ and RSRP by displaying them side -by-sidetogether with the serving cells PCI, RSRQ and RSRP. The neighbors attributes can be found inLTE LTE Neighbor Cell Infonode. Drag and drop them into the same table.

Before the connection was dropped, you can see that about a few seconds before the drop, thebest neighbor cells has much better signal strength. Have a look at the difference between theserving cell and the best neighbor cell.

We also noticed that right after the drop, PCI 122 appeared to be the serving cell and the radioconditions were good.

Maybe it is time to take a look at the RRC and Layer 3 messages to further investigate the causeof the connection drop, and find out for instance whether the UE has requested a handover in RRCMeasurement Report messages before the drop occurred. To do so, we can open a Protocol StackBrowser or a Message Browser.


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Protocol Stack BrowserThe Protocol Stack Browser(PSB) allows you to browse quickly through protocol messages by

examining the protocol message name only. Once a message of interest is identified in the toppane of the Protocol Stack Browser, the details of the message can be examined in the bottompane.

Select View Protocol Stack LTE Handsetfrom the Main Menu. Rearrange and synchronizethe table, map, chart, stateform and PSB to view them side-by-side.

To add and remove columns (attributes) in PSB, click on Edit Columns.Select the attribute you want to add from the Available attributescolumn and click on the Addbutton. To remove existing attribute columns, select them and click on the Removebutton. In theabove example, we have added LTE_RRC_RRCConnectionDrop, LTE_UE_RSRPandLTE_UE_Nbr_RSRP[0].

We can confirm that theUE has requested a handover inRRC Measurement Report messages a few times before the

drop, but the eNode B did not perform the handover.


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Performing Customized LTE AnalysesYou can create a wide variety of customized analyses using Analyzer. You may want to highlight

potential voice or data problem areas, or test for common symptoms of badradio link quality for the purpose of speeding up the analysis of data. Your

customized analysis, called a query, can be saved in a Workspace andreused for future drive data. These queries can be created, accessed, andedited in the Workspace through the Analysis Manager.

About QueriesQueries are a means of searching and filtering data based on events and thresholds you define.Queries operate on binned data and are written using Boolean expressions and arithmeticoperations containing data parameters. Analyzer supports six types of queries:

Filter Analysis (display data based on a single criterion)

Binned Query Analysis (using functions and inequalities to define a new parameterbased on existing parameters)

Cross Tab Query Analysis (to group data and display statistics for each group. Thegroups can be sorted, and a query can contain several options for grouping data)

Event Query (to extract key performance statistics for a user-defined time or messagewindow before or after a defined event such as dropped connection)

Statistic Analysis andHistogram Analysis

(provide analysis formats for custom expressions)

In the following chapters, we will continue to analyze the same dropped connection by creatingqueries(binned, histogram and crosstab), single and multiple files reports, and repositories.

Edit Pre-configuredor your own queries or analyses

Retrieve queries from another folder

Createyour own query

To save your query


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Binned QuerySo far, weve managed to display the serving and best neighbor cells PCI, RSRQ and RSRP ontables, and it was useful to look at a particular point of data. It will be nice if we can also see the

signal strength difference between the serving cell and the best neighbor cell throughout the wholedrive.

To do so, create a binned query that computes the difference between the serving cells RSRP andthe best neighbor cells RSRP:

1 In Analysis Manager(if you are not there yet, press Ctrl-A), double-click on BinnedQueryicon to go to the Expression Builder.

So, our formula should look something like:

Difference = Best Neighbor Cells RSRP Serving Cells RSRP

A positive value will indicate that the best neighbor is stronger than the serving cell.

2 Key in a meaningful name of your query in the Descriptiontextbox.

3

Type in your query expression or select the attribute from the attribute nodes column.This State()function is required to ensure that the last valid value of the parameterpersists.

4 Make sure the correct Format groupis selected.

If you are not sure which group to select, just click on one of the attribute and the correctformat group will be selected automatically.

5 Click OKto exit the Expression Builder.


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6 Apply the query by right-clicking your query and display on a chart, map or table.

In the example below, weve displayed the query on a map, along with a connectiondropped attribute. From the chart, we can see a big signal strength difference right before

the connections were dropped.

HistogramA histograms results expressed as a percentage may provide a more meaningful comparison toresults expressed as a count. In the example below, we will use a histogram to look at the channelto interference plus noise ratio (CINR).We will select a range from -50dB to 10dB and divide it into 30 columns.

To create a histogram:

1

In Analysis Manager(if you are not there yet, press Ctrl-A), double-click on Histogramicon to open the Histogram Wizardwindow.

2 Apply this query and display it on a chart or workbook.

To generate this column:

1.Key in the minimum value,maximum value and thenumber of columns.

2.Click on the Generate

button to generate yourcolumn. The ranges will beautomatically calculatedbased on the number of

columns you have set.Note that the ranges willlook slightly strange butevenly distributed.

To set your desired range,

you have to manually

define and key in the

range.


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Crosstab QueryThe crosstab query is used to group data and display statistics for each group. The groups can besorted, and a query can contain several options for grouping data. It is flexible and you can

combine many different data groups together (you are not limited to one format group as you arein binned and histogram queries).

In this example, we would like to see CINR distribution and the correlation between CINR, RSRPand RSRQ. To create a crosstab query:

1 In Analysis Manager(if you are not there yet, press Ctrl-A), double-click on CrosstabQuery icon to open the Crosstab Query Wizardwindow.

Click on the New Dimensionbutton. The query dimension allows you to group and order

your results using the attribute you select. Use attribute chooserto select LTEDownlink Measurement LTE_UE_CINRto add the CINR as the dimension. We willcreate a dimension for CINRs histogram (set with 3 dB difference).

Click on Edit Dimensionto open the Expression Builderto set your criteria.

2

Now apply the query on a Statistics Explorerto see if your query works.Always do so before you continue to build a bigger query!


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3 Next, create two new statistics: Avg RSRPand Avg RSRQ.

Use the attribute chooser to select LTE Downlink MeasurementLTE_UE_RSRPand LTE_UE_RSRQto add the CINR as the statistics so that the state()function is applied when an attribute is selected.

3 dBs

difference for

each column


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4 Lastly add a global filterto only retrieve data with status = connected.

5 Apply and display your query on a workbook.

In the next chapter we will learn how to create a Single File Reportusing this crosstabquery. You will then use the report for other log files.

Status = Connected

The occurrences of any CINR < -12 were insignificant (didnt

occur so often). We can basically filter this range of the data

out. Edit your global filter and add this new condition. Save as


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Reporting Network Performance

Creating Custom Single File ReportCreating your own formatted report template is as easy as viewing the data you

require on a workbook, and then formatting the report page using Excel.

The objective of this section is to create a simple report or a single filereport.

We will be using our previousCINR_vs_RSRP_RSRQ_CONNECTED_CINRFilter crosstab query.

The report we want to create look like this:

To create the above report:

1 Ensure that the logfile you used to create the crosstab query is loaded into the Workspace.

2 Ensure that the modified version of crosstab query (in this example:

CINR_vs_RSRP_RSRQ_CONNECTED_CINRFilter.aqf) is loaded.

3 Right-click on Queries Crosstab Queries Your Query Nameand choose Displayon Workbook.

Note Excel will launch and the Workbook will contain three

sheets, which can be accessed by clicking on the corresponding tabat the bottom sheet window.

4 Rename the current sheet to Report.

5 Select whole column A to C (in this example) to create a chart and place it on the right.

Adjust and format chart accordingly.

6 Remove all data in column A to D (in this example).

Save your file as YourQueryName-Report.xlsx and close your file after youve saved it.To test if this report is working, load another logfile and open a workbook.


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Opening Single File Report

To open a single report file:1 Ensure that the logfile you want to create a single file report (based on the crosstab query)

is loaded into the Workspace.

2 Select Workbook Open Workbook/Reportto open theYourQueryName-Report saved previously to the

C:\Program Files\Actix\Analyzer\Reportsdirectory.

The Stream Selectionwindow will appear that prompts you to select a data stream:

3 Click on the stream name follow byOKbutton to create your report.

As you can see, the above example has 5 sets of data.

In order to view them all and display on a single report, we can merge these sets of databy creating a superstream or create a repository(a database with aggregated data).


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Modifying a Custom Report

Reports can be upgraded or modified at any time. To modify an existing report:1 Run the report through the Workbook Open Workbook/Reportfrom Main Menu

before making any modifications.

2 Make modifications to the existing report, including adding additional parameters from thesame data stream, adding the same parameters from different data stream, or makingcosmetic adjustments.

3 Save the file.

Note Making modifications to a report by opening the Excel file inWindows will corrupt the Analyzer report.

Some suggestions for upgrading existing reports:

Add Additional Parameters to the ReportAdd to the existing report differentparameters from the same data stream using the Display on Workbook (Active) command.Update the Report page to show results for all parameters included.

Create a Comparison ReportAdd to the existing report the same parameter from adifferent data stream using the Display on Workbook (Active) command. Update theReport page to show results for both data sets.

Provide Histogram Results as a PercentageHistograms results expressed as apercentage may provide a more meaningful comparison than results expressed as a count.

Create an Intermediate sheet in Excel to convert the histogram values into percentages.Update the Source Data for the histogram chart to reflect the new display method.

Embedded an Excel Macro in a ReportAny Excel format or technique may be appliedto a report, including macros which automate specific tasks within Microsoft Excel. Forexample, create a report that provides a comparison of a parameter at common locationsin two different logfiles.


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Creating Custom Multiple Files ReportLets start by create a crosstab query where we can compare the RSRP and RSRQ of two logfiles

(similar to the previous crosstab query).

Preparation: Create Crosstab Query

Ensure the following values are set before you apply and open the query on Workbook:

Dimension:RSRP with 3 dB difference in each row.


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Statistics: Average of RSRQ

Global Filter:Only interested in displaying RSRP > -120 dB


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To create a multiple report using the crosstab query above:

1 On the 1stlogfiles stream name, right-click on Queries Crosstab Queries Your

Query Nameand choose Display on Workbook.

2 On the 2ndlogfiles stream name, right-click on Queries Crosstab Queries Your

Query Nameand choose Display on Workbook (active).Save file as YourQueryName-MultipleReport.xlsx.

3

If everything looks correct in the Reportsheet, go to the Crosstab FormattedSheet andremove all data in that sheet.

In the Crosstab Formatted

Sheet, notice that the RSRP

range is slightly different

between 2 files.

Rename a new sheet as

Report.

Define the range desired.

Create a formula or even a

macro (if applicable) to copy

and paste the RSRQ value

from Crosstab Formatted

Crosstab FormattedSheet

ReportSheet


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4 Go back to the Reportsheet to ensure no data is displayed.

5 Make sure that the Report sheet is the default page and save the file again.

6

Close the file after youve saved it.

Opening Multiple Files Report

To open a single report file:

1 Ensure that the logfiles you want to use to create a multiple file report (based on the

crosstab query) are loaded into the Workspace.

2 Select Workbook Open Workbook/Reportto open the

YourQueryName-MultipleReport saved previously to the

C:\Program Files\Actix\Analyzer\Reportsdirectory.

The Stream Selectionwindow will appear and prompt you to select a data stream:

3 Select the 1stdata stream and click OKto proceed.

4 The same Stream Selectionwindow will appear again to prompt you to select another

data stream. In this example, we are only going to compare two sets of data. Therefore,the Stream Selectionwindow will only appear twice.

5 Click on the 2ndstream name follow byOKto create your multiple report.


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SuperstreamA superstreamis a new stream created by merging two or more sets of data into one large data

set. Beware that the size can be huge (since the superstream contains allattributes, even thosethat we might not need in our analysis).

To create a superstream:

1 Select Tools Create Superstreamfrom the Main Menu or press Ctrl-U.

2 Key in a meaningful name for your superstream and select the streams you want to

merge.

3 Click on the Settings >> button if you want to merge your data with a common attribute

or a correlated parameter, which, in this example is the LTE_UE_RSRQattribute.

Note This merge method is useful when merging the data for twodevices (for instance a handset and a scanner) that were loggedconcurrently, but for which the timestamps are not aligned. If thetwo streams correspond to two log files logged consecutively, thenit is better to use the default Use timestamps method ofsuperstreaming.


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4 Click OK. A new stream, Super Streamscontaining the same attribute nodes will be

created in Attribute Explorer.

5 Select Workbook Open Workbook/Report to open your single report.

This time, select the superstreams stream name.The report will open displaying the combined data.


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RepositoryThe repository function provides a mechanism for handling large volumes of data, by loading the

results of queries into a relational database mainly applicable to crosstab, event and binnedqueries.

In the Actix terminology, databases are called repositories. A repository is based on a template,which specifies how the results are to be structured into data sources (called devices) and whichattributes and queries are to be included in each device. The repository stores the binned data forthe attributes as described in Repository Binned Data.

Some of the engineering process modules use repositories to store data but hide the details ofcreating repositories and loading data into them behind the task pages. However, Analyzer Classicincludes features that advanced users can use to create new repositories directly, and to open,close, and delete existing repositories, and to load data into them.

When a repository is open, it is displayed in the Open Repositoriesfolder in the AttributeExplorer. Data is loaded into the devices based on the stream name filter and stream type

specified in the Define Devices pageof the Repository Template.

Repository Template Wizard

You use the Repository Template Wizardto create templates that can then be used for creatingrepositories. The template defines the structure of thenew repository, what type of data it is to be used for,how that data is to be organized, etc. You can also use theRepository Template Wizard to edit an existingrepository template.

You start the Repository Template Wizard from theTemplate Manager, which lists the templates thatalready exist and also enables you to deleteunwanted templates.

Before you start creating a template, make sure that allof the queries that you want to use in thetemplate are already available in the AnalysisManager, otherwise you will not be able to add themto the template. If necessary, close the TemplateManager, add the queries, and then start again. In ourcase, we will make use of the

CINR_vs_RSRP_RSRQ_CONNECTED_CINRFilterquery that weve created earlier.

To open the Template Manager, select Repository Template Managerfrom the main menu.


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Creating a New Template

To create a new template:1 Select Repository Template Managerfrom Main Menu to open the Repository

Template Wizard window.

2 Click Newto create a new template. This opens the Repository Template wizard'sWelcomepage. Step through the selection by selecting the defaultsettings except thequery selection:

3 Continue to click on Next > till youve reached the Name and Descriptionstep.

Key in a meaningful name for your repository template and a description about the

template.

4 Click Finish to create the template.

Select the Crosstab query youve created

and other related queries you need


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Creating a Repository

To create a repository based on the template you have just created:

1

Select Repository Create Repository from the Main Menu.

2 Key in a meaningful repository name.

Select the template you have just created and click on Create & Openbutton to createthe repository node in Attribute Explorer.

3 In the Attribute Explorer, expand the Open Repositories node and right-click on the newrepository you have just created (in the example below this is LTE Training Repository)to load your logfiles.

4

Click on Add Files...to select your data files to be loaded into the repository.Click OK to start loading the files.

Select the template youve just

created:

Right-click on your new

repository node and select Load

Datato load your logfiles


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5 A File load resultswindow will be displayed and the Resultcolumn will show the status

of the file. OKmeans files are successfully loaded.

6 Click Closeafter youve finished examining the files status.

Creating a Repository Report:

It is wise to double check your results before you continue to customize your report. To do so, first

display your query in Repository Statistics Explorer.

To do so:

1 Right-click on the Open-Repository Your New Repository All Queries

Crosstab Queries Your Crosstab Query Name and display it onRepository Statistics Explorer, which lets you visualize and analyze the data processedinto a Repository.

You can click on Date Range button to

filter data by date.

You can also apply a filter to look at a

specific set of data.

When specific problem areas have been

isolated, the Repository Statistics

Explorercan load the raw performance

messaging details into Analyzer for further


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If you prefer to display the result directly into a workbook, right-click on the Open-Repository Your New Repository All Queries Crosstab Queries YourCrosstab Query Name and display it on Workbook.

2 A workbook in Excel with a report for all log files will be created where the repository is

loaded.

3 Save and name your report as Reportfor Your New Repository.

4 If everything looks correct in the report, remove all data in that sheet.

Note Reports opened from a repository will be different fromreports opened directly from Analyzer. You will get the sameresults but the Excel file will be different. Standard Analyzerreports can be run on repositories but repository reports cannot berun on Analyzer streams. Either keep only the standard Analyzerversion of reports, or save a separate copy of your repositoryreport in a separate file.

5 Save the file again and close the file after you have saved it.


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Displaying a Repository Report:

To display the repository report that you have just created:1 Select Workbook Open Workbook/Report from the Main Menu and select Report

for Your New Repository (the one you have just created). Click on Opento proceed. AStream Selection window will appear.

2 Select the Allstream from Your New Repositorystream name and click OKto displayyour repository report. Do you notice any difference?

Note

Repositories are very useful to generate reports on a large set oflogfiles. The workflow you should follow is:

1. Create queries using Analysis Manager.

2. Create a report in Analyzer.

3. Create a Repository Template containing all the queriesrequired by the report.


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Saving Your Work

Saving Screen LayoutsLastly, you can save a copy of the preferred layout of your current workspace. Saving a workspacein Analyzer allows you to save the following items:

Window layouts

Open files you are currently working with

Custom analyses you have created

Custom attributes you have executed

Superstreams you have created

Repositories you have created

To save your workspace click File Save Workspace Asand give the file a name. The Analyzerfile structure includes a Workspaces folder that can be used to hold the saved workspace(s),though you can save a workspace to any location.

A workspace created with Analyzer may be opened directly from the Windows Desktop. To start upAnalyzer with a set of commonly used queries, simply save a workspace with the queries ofinterest, but no data files. The workspace may then be saved as a shortcut on the WindowsDesktop. Double-click on the Desktop shortcut to open Analyzer with all of your frequently usedqueries in place.


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