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Actix Analyzer UMTS Analysis

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					           UMTS
         Analysis Guide




November 2005




        www.actix.com
                                                                                                                2




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 2005-2008. All rights reserved. All trademarks are hereby acknowledged.




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                                               Contents                                                                 2



1 INTRODUCTION .........................................................................................4

2 OPERATIONAL TASKS AND PROCESSES .............................................................5
  2.1 SITE INTEGRATION AND INFRASTRUCTURE TESTING .................................................... 7
  2.2 DETAILED CALL SEQUENCE ANALYSIS .................................................................... 8
  2.3 BENCHMARKING AND STATISTICAL ANALYSIS ............................................................ 9
  2.4 RADIO LINK PERFORMANCE TROUBLESHOOTING........................................................10

3 FEATURE OVERVIEW ................................................................................. 12
  3.1 ACTIX ANALYZER ...........................................................................................12
  3.2 APPLICATION LAYERS ......................................................................................13
     3.2.1 Neighbor List Analysis Module ...............................................................14
     3.2.2 CPICH Pollution Analysis Module ............................................................17
     3.2.3 Handoff State Analysis Module (for scanner) ...........................................19
     3.2.4 Emulated Active Set Module..................................................................22
     3.2.5 CPICH before RRC Connection Request Module ........................................23
     3.2.6 CPICH before call end or drop Module.....................................................24
     3.2.7 CPICH during call Module......................................................................25
     3.2.8 CPICH after call end or drop Module .......................................................26
     3.2.9 Call Setup Status Module......................................................................27
     3.2.10 Call Sequence Analysis Module ............................................................28
     3.2.11 Call Statistics Module (CS or PS)..........................................................29
     3.2.12 Call Sustainability Module ...................................................................30
     3.2.13 Call Timing Analysis Module ................................................................31
     3.2.14 File Summary Module.........................................................................32
     3.2.15 Coverage Summary Module ................................................................33
     3.2.16 Handoff Breakdown Analysis Module (Handset) ......................................34
     3.2.17 SHO per event 1a-1b-1c Module ..........................................................35
     3.2.18 Overall BLER Module ..........................................................................36
     3.2.19 BLER Per call Module ..........................................................................36
     3.2.20 BLER during SHO Module ....................................................................37
  3.3 FILTERS .....................................................................................................37
  3.4 STATEFORMS................................................................................................38
     3.4.1 UMTS Data Event Navigator ..................................................................38
     3.4.2 UMTS Data Session .............................................................................39
     3.4.3 UMTS Throughput ...............................................................................40
     3.4.4 UMTS Top 10 Scan Measurements .........................................................41
     3.4.5 UMTS UE Active + Monitored Set ...........................................................42
     3.4.6 UMTS UE Call Information.....................................................................43
     3.4.7 UMTS UE Measurements Charts.............................................................44
     3.4.8 UMTS UE Radio Parameters ..................................................................45
     3.4.9 UMTS UE Transport Channel Info ...........................................................46
     3.4.10 UMTS Voice Event Navigator (CS Only) .................................................47




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Actix Analyzer UMTS Analysis Guide November 2005                                       Introduction 4



1 Introduction
                                                                                                        2
        It is widely recognized that increasing productivity fuelled much of the global economic
        expansion of the 1990’s. Technological advances in software and hardware usually enable
        these productivity improvements, although there is often a lag between the availability of
        the new technology, and its widespread acceptance and deployment by industry. This gap
        is sometimes called the productivity lag factor.
        Some examples of this include the introduction of automated bank teller technology in the
        1980’s in the US. When the technology initially became available, it was only sparingly
        deployed, and the units were often placed inside bank buildings where the productivity
        enhancements they offered were limited. Likewise, unattended gasoline pump technology
        has been slow to roll out in Europe, but as the technology has become widely adapted,
        huge efficiency gains have been realized.
        The wireless industry is now at a similar point. It understands that the traditional labor-
        intensive techniques for maximizing performance and capacity in wireless infrastructure
        are fundamentally limited by a lack of structured algorithms to determine improvements.
        Actix Analyzer offers the possibility to look at drive test data and scanner data to fully
        optimize a UMTS network. It allows the engineer to understand the causes and reasons for
        drop calls and access failures.
        Analyzer offers an unprecedented capability to execute a detailed examination of message
        flows and automating statistical analyses of performance. Analyzer significantly accelerates
        the rollout, troubleshooting and optimization of the UMTS network. Actix has embedded
        intelligence in the software to allow the RF engineer to visualize specific events and
        understand real problems occurring in the network.
        Analyzer embodies our extensive experience as the market leader in optimization solutions
        for CDMA, UMTS and GSM. All of the lessons learned and the techniques developed over a
        10-year period have been incorporated into these powerful, vendor-independent solutions
        for UMTS infrastructure.
        This document provides an overview of the key benefits, applications and features of
        Analyzer. For additional information, including white papers and other literature, please
        refer to www.actix.com.




                                                                                      www.actix.com
Actix Analyzer UMTS Analysis Guide November 2005                              Operational Tasks and Processes 5



2 Operational Tasks and Processes
                                                                                                                      2
        Actix Solutions embody our extensive experience as the market leader in optimization
        solutions for CDMA, UMTS and GSM. All of the lessons learned and the techniques
        developed over a 10-year period have been incorporated into these powerful, vendor-
        independent solutions for cdma2000, GPRS and UMTS infrastructure.
        Analyzer’s Rollout Verification is a novel solution to the challenge of rolling out,
        troubleshooting and optimizing real UMTS networks. Analyzer may be used in field trial,
        benchmarking and operational settings to automate the process of quantifying network
        performance, thereby mitigating the risk of performance problems during commercial
        operation.
        Analyzer offers an unprecedented capability to execute a detailed examination of message
        flows and automating statistical analyses of performance. Analyzer significantly accelerates
        the rollout, troubleshooting and optimization of the UMTS network. Actix has embedded
        intelligence in the software to allow the RF engineer to visualize specific events and
        understand real problems occurring in the network.
        Applications addressed by Analyzer first become pertinent during the new technology
        rollout, as shown in Figure 1. Then, as first-generation technology is rolled out for soft or
        commercial launches, Analyzer continues to address a number of critical challenges. As
        new sites are coming on air and more customers are accessing the network, the real
        challenge for the RF engineer is to maximize the coverage, capacity and quality of service.
        Analyzer offers a number of applications applicable to these ongoing challenges.



                                                        Rollout
                                                        Verification
                                                        S l
                 R&D                  Initial             Immature               Mature
                 Trials               Rollout             Buildout               Growth



        Figure 1: Applicability of Analyzer begins in the Initial Rollout and continues throughout the lifecycle of
                                                 the network deployment




        Analyzer is a powerful tool designed to help the RF engineer analyze data from scanner
        and handset sources. It gives a detailed analysis during the whole drive route. From
        missing neighbor to pilot pollution detection, the different embedded events give an
        absolute advantage to the RF engineer in understanding the source of different problems.
        Figure 2 depicts some of the major processes performed by engineering teams during the
        initial rollout, immature buildout and mature growth phases; and indicates the key radio-
        link configuration tasks that are common across these processes. The following sections
        provide an outline (plus additional details) of the processes and tasks typically performed
        during those phases.




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Actix Analyzer UMTS Analysis Guide November 2005                           Operational Tasks and Processes 6




     R&D / Trials             Initial            Immature             Mature                                     2
                                                                                             Phases
     & Planning               Rollout            Buildout             Growth




           Site Calibration           Initial Coverage                               Processes
           Initial Testing            Analysis




                        Subscriber-Perceived            Radio Link
                        Performance                     Performance




                                    On-going                        Network
                                    Optimization                    Growth



                      Power                      Site Integration
                      Measurements               and
                                                 Optimization


          Service                  Throughput                   Event
          Coverage                 and Rates                    Detections                   Tasks
          Availability             Calculation


                     Scanner and
                     Drive Tests                   Benchmarking
                     Analysis




        Figure 2: Scanner and Drive tests analysis, Site Integration and Optimization are performed as part of
                 critical processes in the Initial Rollout, Immature Buildout and Mature Growth phases


        Analyzer allows the user to focus on the following tasks for site integration and testing,
        coverage analysis, troubleshooting and optimization:

            •   Site Integration and Infrastructure Testing

            •   Detailed Call Sequence Analysis

            •   Benchmarking and Statistical Analysis

            •   Radio Link Performance Troubleshooting

            •   Event Detection and Drive Test Analysis
        The following sections describe the high-level capabilities of Analyzer for each of these
        applications. Because Analyzer is based on an open architecture platform—which includes

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Actix Analyzer UMTS Analysis Guide November 2005                           Operational Tasks and Processes 7

        user-definable query and open data import capabilities—it may be used for many ad-hoc
        troubleshooting and performance analysis tasks beyond those covered in this document.
                                                                                                               2
2.1 Site Integration and Infrastructure Testing
        Part of the process in rolling out a network is to be able to test and integrate new sites.
        Analyzer provides the following features for site integration and infrastructure testing:

            •   The file summary report allows the engineer to have a quick look at the overall
                performance during the entire drive test.

            •   Embedded charts and graphs help to visualize key parameters like Ec/No or RSCP
                in the active set.

            •   Detailed reports on call statistics on cell by cell basis

            •   User-definable queries allow creation of customized statistical analysis

            •   Automated report generation containing statistical summaries of key performance
                indicator




        Figure 3: Charts and graphs for UMTS site integration and infrastructure testing




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Actix Analyzer UMTS Analysis Guide November 2005                          Operational Tasks and Processes 8



2.2 Detailed Call Sequence Analysis
                                                                                                              2
        Analyzer provides these analyses of call sequence and call setup procedures:

            •   Detailed call sequence analysis on a message by message basis

            •   Automated report generation for visualization of call sequence messages

            •   Automated report generation – statistical summaries of call setup problems




                     Figure 4: Statistical summaries of call setup procedures and failure causes




                                      Figure 5: Detailed call sequence analysis




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Actix Analyzer UMTS Analysis Guide November 2005                          Operational Tasks and Processes 9


2.3 Benchmarking and Statistical Analysis
        Analyzer provides the following features for benchmarking and statistical analysis:                   2

            •   Automated report generation for quick visualization of call statistics such as drop
                calls, access failures, call sustainability, etc.

            •   Working with different sources of data to create homogeneous set of reports for
                benchmarking

            •   User-defined queries allowing easy access to different statistics




                         Figure 6: Charts and graphs representing different call statistics




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Actix Analyzer UMTS Analysis Guide November 2005                           Operational Tasks and Processes 10




                                                                                                                2




                                  Figure 7: Various call statistics filtered by cells



2.4 Radio Link Performance Troubleshooting
        Analyzer may be used to diagnose and determine remedial action for key radio-link
        configuration problems, including:

            •   Distant servers

            •   Too many servers

            •   Unnecessarily large neighbor lists

            •   Excessive soft handoff area




                        Figure 8: Identify problems for UMTS radio networks by visualizing
                               pilot signals as lines drawn to serving cells on a map


        Radio Link Performance Metrics available from Analyzer will include the following
        attributes, depending on the specific vendor and specific source (handset or scanner):


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Actix Analyzer UMTS Analysis Guide November 2005                       Operational Tasks and Processes 11


            •   Mobile Transmit Power, Mobile Receive Power, BLER

            •   CPICH Ec/No, Ec/Io and RSCP per scrambling code                                             2

            •   Chip Offset and Delay Spread per SC

            •   Ec/Io, RSCP and Pathloss for Nth best SCs

            •   CPICH Ec/No and SC in Active and Monitored set

            •   Handoff State, Call ID




                             Figure 9: Charts and graphs for a handoff state analysis




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Actix Analyzer UMTS Analysis Guide November 2005                                  Feature Overview 12


3 Feature Overview
                                                                                                        2
3.1 Actix Analyzer
        Depending on the licenses available to you, Analyzer is able to analyze cdma2000, GSM,
        GPRS and EDGE, as well as UMTS data. Analyzer provides a core set of capabilities to
        analyze network performance data:

            •   Interfaces to a large number of network performance data sources

            •   Support for a wide variety of wireless protocols from the air-interface to the core
                network

            •   Filtering and binning module

            •   Finite state event detection engine

            •   Time-series and multi-dimensional statistical query module

            •   Data merging and synchronization / correlation module

            •   Mapping, charting, and reporting modules

            •   Messaging and protocol stack browsers

            •   Network element database

            •   Open data import and export module


        Analyzer’s flexibility allows it to be configured for a wide range of network performance-
        data analysis tasks.




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Actix Analyzer UMTS Analysis Guide November 2005                                Feature Overview 13



3.2 Application Layers
                                                                                                      2
        Application Layers can be added to Analyzer to implement task or application specific
        functionality. Analyzer includes the following application layers:
        UMTS Accelerated Network Rollout Solution

            •   Neighbor List Analysis Module

            •   Handoff State Analysis Module

            •   CPICH Pollution Module

            •   Emulated Active Set Module
        UMTS CPICH Level Analysis

            •   CPICH before RRC Connection Request Module

            •   CPICH before call end or drop Module

            •   CPICH during call Module

            •   CPICH after call end or drop Module
        UMTS Call Setup Analysis

            •   Call Setup Status Module

            •   Call Sequence Analysis Module
        UMTS Call Statistics

            •   Call Statistics Module

            •   Call Statistics PS Module

            •   Call Sustainability Module

            •   Call Timing Analysis Module
        UMTS Drive Test Summary

            •   File Summary Module

            •   Coverage Summary Module
        UMTS Handoff Analysis

            •   Handoff Breakdown Analysis Module

            •   SHO per event 1a-1b-1c Module
        UMTS Quality Analysis

            •   Overall BLER Module

            •   BLER Per call Module

            •   BLER during SHO Module



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Actix Analyzer UMTS Analysis Guide November 2005                                     Feature Overview 14


3.2.1 Neighbor List Analysis Module
        The Neighbor List Analysis provides an automated approach for generating optimal                   2
        neighbor lists and overcoming major service-degrading problems such as missing
        neighbors.
        The key components of the neighbor-list analysis module are:
        Generation of recommendations for optimal neighbor list settings based on UMTS/WCDMA
        scanner drive test data.
        Integration with Network Element Database to audit existing neighbor lists and suggest
        changes, and to correlate non-unique measured data attributes such as Scrambling Code
        with unique identifiers such as Sector ID.
        The Neighbor List Module implements the following algorithm:
        Ec/Io measurements below a noise floor are filtered out of the data set before analysis.
        User definable binning is used to reduce the number of measurements points in each bin to
        create one value per bin – optionally, no binning at all can be applied and the analysis will
        run on the full data set.
        At each point along the drive test, a list of prospective neighbors is accumulated as
        indicated in Figure 19. If a neighbor signal is within a user-definable threshold of the best
        server in the active set, then it is considered as a potential neighbor.
        Using the geographic information in the log file and the SC, the network element database
        is searched to identify the Sector and Cell IDs of the SC.
        A symmetrical neighbor array is created in memory which records the number of times
        each sector ID is seen as a prospective neighbor of another sector ID as shown in Table 1.
        Once all bins in the log file have been compiled into the symmetrical matrix, the results
        are compared against actual neighbor lists contained in the network element database and
        the following are calculated:

            •   a list of sector IDs included in the matrix, but not the actual neighbor list

            •   a list of sector IDs included in the actual list but not in the matrix




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Actix Analyzer UMTS Analysis Guide November 2005                                          Feature Overview 15




                                                                                                                   2




         C                                            D
         Neighbour 2                                  Not a Neighbour




                                                                                     A
                                                                                     Best Server


B
                         Drive Test
Neighbour 1
                         Route                                   E
                                                                 Excluded from Analysis




        Figure 19: Cell A is the best server by CPICH Ec/Io. Cells B and C are within a user-specified threshold
           of Cell A’s Ec/Io, and so are counted as potential neighbors of A. Cell D is not within the required
             threshold and so is not counted as a prospective neighbor, nor is Cell E which did not have a
                               measurable signal contribution at this point in the drive test.




                                              A       B      C       D
                                       A     N/A     10      2      15
                                       B      10    N/A      40      0
                                       C      2      40     N/A     12
                                       D      15      0      12     N/A
                Table 1: A sample symmetric prospective neighbor array using sector IDs A, B, C, and D




        Limitations of the algorithm:
        Results are only produced in areas that have been tested, so the test areas should be
        carefully considered before removing any Sectors from the neighbor lists
        Drive tests do not necessarily emulate the radio environment encountered by pedestrian
        and in-building users; however, walk tests and in-building tests may be included in the
        analysis as desired
        Results are presented in the following application reports:

            •    Neighbor List Summary



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Actix Analyzer UMTS Analysis Guide November 2005                                     Feature Overview 16


            •   Neighbor List Audit

            •   Recommended Neighbor Lists                                                                 2




                             Figure 20: A sample Recommended Neighbor Lists report




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 17


3.2.2 CPICH Pollution Analysis Module
        The CPICH or Pilot Pollution Analysis uses an emulated Active Set to estimate which pilots        2
        would have been actively demodulated by the UE, and then detects other pilots above a
        user-definable threshold that cause excessive interference. Please see the Emulated Active
        Set Module section for more details on how the Active Set is estimated based on WCDMA
        scanner measurements.
        The pilot pollution algorithm has these components:

            •   Ec/Io measurements below a noise floor are filtered out of the data set prior to
                analysis.

            •   User definable binning is used to reduce the number of measurements points in
                each bin to create one value per bin – optionally, no binning at all can be applied
                and the analysis will run on the full data set.

            •   At each point along the drive test, CPICH Ec/Io data for each Scrambling Code is
                used to assign SCs to an Active Set or a Pollution Set (please see the Emulated
                Active Set Module section for more details).

            •   The Pollution Set consists of all SCs that are not in the Active Set, and have a
                CPICH Ec/Io within a user specified pollution threshold of the strongest CPICH
                Ec/Io in the Active Set (see Figure 21).

            •   Using the geographic information in the log file and the SC, the network element
                database is searched to identify the Sector and Cell IDs of the SC.

            •   A pollution array is created in memory which records the number of times each
                sector ID is seen as a source of pilot pollution as shown in Table 2

            •   All bins in the log file are then processed into the pollution matrix.




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Actix Analyzer UMTS Analysis Guide November 2005                                              Feature Overview 18




                                                                                                                       2



                                                               D
                                                               Pollution Source
            C
            Active Set




                                                                                        A
                                                                                        Active Set


                       Drive Test
  B
                       Route                             E
  Active Set
                                                         Not a Pollution Source, or in
                                                         Active Set




            Figure 21: Cell A, B and C are part of the Active Set, as determined by the Emulated Active Set
         module. Cell D has a CPICH Ec/Io within a user-specified pollution threshold of the Active Set’s best
         server Ec/Io, and so is counted as a contributor to pilot pollution at this point in the drive test. Cell E
                  has a CPICH Ec/Io that is not within this threshold and so is not a pollution source.




                                        Sector ID             Pollution
                                                               Count
                                              A                     0
                                              B                   150
                                              C                    45
                                              D                    12
         Table 2: A sample pollution array indicating the number of points at which each sector caused pilot
                                        pollution for sector IDs A, B, C, and D




        Results are presented in the Pilot Pollution Analysis application report as shown in Figure
        22. In addition, Pilot Pollution may be geographically analyzed for each SC by accessing
        the Pollution_for_SC attribute in the workspace view.




                                                                                                   www.actix.com
Actix Analyzer UMTS Analysis Guide November 2005                                          Feature Overview 19




                                                                                                                   2




        Figure 22: The Pilot Pollution Analysis report indicates the worst interferers sorted by Scrambling Code


3.2.3 Handoff State Analysis Module (for scanner)
        The Handoff State Analysis module uses the emulated Active Set to determine the handoff
        state at each point along a drive test. Statistics on handoff state may then be calculated
        and presented in a report format. Excessive handoff state reduces capacity and increase
        infrastructure costs for a given traffic level. Please see the Emulated Active Set Module
        section for more details on how the Active Set is estimated based on WCDMA scanner
        measurements.
        The handoff state algorithm has the following components:

            •   The Active Set of pilots is determined using the Emulated Active Set module

            •   Using the geographic information in the log file and the SC, the network element
                database is searched to identify the Sector and Cell IDs of the SC

            •   Handoff state is calculated by determining the configuration of the sectors in the
                Active Set as shown in Figure 23

            •   All bins in the log file are then processed into the handoff state matrix
        Reports showing the percentage of handoff state for each sector and for the total drive test
        may then be calculated as shown in Figure 24.




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Actix Analyzer UMTS Analysis Guide November 2005                                         Feature Overview 20



           Single-sector                      3-way Softer

                                                                                                                 2



                                               3 sectors
                                               same node B

             Softer                                 Soft




            2 sectors
            same node B

             3-way soft                         Soft-softer




                                        2 sectors
                                        same node B


        Figure 23: The Handoff State Analysis examines Sector IDs involved in call at a given drive test point
                   and determines which of the above states applies, based on UMTS scanner data




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Actix Analyzer UMTS Analysis Guide November 2005                                        Feature Overview 21




                                                                                                              2




           Figure 24: A report showing the percentage of drive test in each handoff state for scanner data




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Actix Analyzer UMTS Analysis Guide November 2005                                       Feature Overview 22


3.2.4 Emulated Active Set Module
        CPICH Pollution Analysis and Handoff Analysis are both based on a calculated Active Set,               2
        which is determined by the Emulated Active Set module. The Emulated Active Set module
        implements the 3GPP handoff algorithm and uses scanner Ec/Io measurements in
        conjunction with user-specific 3GPP handoff thresholds to emulate the Active Set at each
        point along a drive test. Figure 25 shows a sample set of scanner data for three individual
        SCs with color and vertical lines indicating transitions of pilots into and out of the Active
        Set.




         Figure 25: Using Scanner Ec/Io measurements to implement 3GPP handoff algorithms for the Active
                                                      Set




        Figure 26 shows the list of attributes available for modification by the user, as indicated in
        the 3GPP specifications:




        Figure 26: Setting 3GPP handoff algorithm attributes including Reporting Range: Hysteresis Event and
                                                Time to Trigger Event




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Actix Analyzer UMTS Analysis Guide November 2005                                     Feature Overview 23


3.2.5 CPICH before RRC Connection Request Module
        The CPICH before RRC Connection Request module helps the engineer to understand the                2
        environment right before the call started or to be more precise, before the first RRC
        connection request happens. For every call in the log file, the report can show the
        following parameters:

            •   Call Identification, based on the attribute “Uu_Call_id”

            •   Time of the first RRC Connection Request for a specific call

            •   Site the call was placed, based on the attribute “ServingCellid”

            •   Scrambling Code the call originated on, based on the attribute
                “Uu_ActiveSet_SC_0”

            •   Ec/Io of that same Scrambling Code, based on the attribute
                “Uu_ActiveSet_EcNo_0”

            •   RSCP of that same Scrambling Code, based on the attribute
                “Uu_ActiveSet_RSCP_0” or the calculated RSCP if the regular RSCP values are not
                present or were not logged.

            •   Site, SC, Ec/Io and RSCP of the Monitored Set if applicable

            •   End result of that particular call
        For any of these parameters, the module searches 5 seconds before the first RRC
        Connection Request for the specific details. If it cannot find the parameters during those 5
        seconds, the value “No Data” is shown.
        Figure 27 shows a typical analysis executed by the CPICH before RRC Connection Request
        module. For the engineer, it is an easy way to look at the conditions before the call started
        and the end result.




           Figure 27: Example of a log file analyzed by the CPICH before RRC Connection Request module




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Actix Analyzer UMTS Analysis Guide November 2005                                        Feature Overview 24


3.2.6 CPICH before call end or drop Module
        The CPICH before call end or drop module helps the engineer to understand the                         2
        environment right before the call ended or dropped. For every call in the log file, the report
        can show the following parameters:

            •   Call Identification, based on the attribute “Uu_Call_id”

            •   Time when the call ended or dropped (see event definitions)

            •   Site ID of the active site when the call ended or dropped (attribute ServingCellid)

            •   Scrambling Code of the 1st finger in the Active Set

            •   Ec/Io of that same Scrambling Code

            •   RSCP of that same Scrambling Code

            •   Site, SC, Ec/Io and RSCP of the Monitored Set if applicable

            •   End result of that particular call
        Figure 28 shows a typical analysis executed by the CPICH before call end or drop module.
        For the engineer, it is an easy way to look at the conditions right before the call ended.




                Figure 28: Example of a log file analyzed by the CPICH before call end or drop module




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Actix Analyzer UMTS Analysis Guide November 2005                                       Feature Overview 25


3.2.7 CPICH during call Module
        The CPICH during call module helps the engineer to understand the environment during a               2
        particular call. For every call in the log file, the report can show the following parameters:

            •   Call Identification

            •   Site ID of the most common active site (site associated with the scrambling code
                of the first finger in the active set)

            •   Most common Scrambling Code of 1st finger in the Active Set

            •   Average Ec/Io during the entire call

            •   Average RSCP during the entire call

            •   Site ID of the most common monitored site (site associated with the scrambling
                code of the first finger in the monitored set)

            •   Most common Scrambling Code in the Monitored Set

            •   Average Ec/Io during the entire call

            •   Average RSCP during the entire call

            •   End result of that particular call
        Figure 29 shows a typical analysis executed by the CPICH during call module. For the
        engineer, it is an easy way to look at the average conditions during the call.




                     Figure 29: Example of a log file analyzed by the CPICH during call module




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Actix Analyzer UMTS Analysis Guide November 2005                                       Feature Overview 26


3.2.8 CPICH after call end or drop Module
        The CPICH after call end or drop module helps the engineer to understand the environment             2
        right after the call ended or dropped. For every call in the log file, the report can show the
        following parameters:

            •   Call Identification

            •   Time when the call ended or dropped

            •   Site ID of the active site when the call ended or dropped

            •   Scrambling Code of the 1st finger in the Active Set

            •   Ec/Io of that same Scrambling Code

            •   RSCP of that same Scrambling Code

            •   Site, SC, Ec/Io and RSCP of the Monitored Set if applicable

            •   End result of that particular call
        Figure 30 shows a typical analysis executed by the CPICH after call end or drop module.
        For the engineer, it is an easy way to look at the conditions right after the call ended.




                Figure 30: Example of a log file analyzed by the CPICH after call end or drop module




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Actix Analyzer UMTS Analysis Guide November 2005                                       Feature Overview 27


3.2.9 Call Setup Status Module
        The Call Setup Status module offers a general overview on how and when the call failed.              2
        The normal call sequence should go like this:

        •   RRC Connection Request (MOC)                          •   Security Mode Command
            or Paging Type1 (MTC)
                                                                  •   Security Mode Complete
        •   RRC Connection Setup
                                                                  •   CC Setup
        •   RRC Connection Complete
                                                                  •   CC Call Proceeding
        •   MM CM Service Request (MOC) or
            Paging Response (MTC)                                 •   Radio Bearer Setup

        •   MM CM Service Accept                                  •   Radio Bearer Setup Complete

        •   Authentication Request                                •   CC Alert

        •   Authentication Accept                                 •   CC Connect
        If all messages are received properly, the call is a success. If it fails to reach the CC
        Connect, it should be pegged as a call failure and this module should give the reason for it.
        Refer to section 3.2 Event Definitions for more details.
        Figure 31 shows a typical analysis executed by the call setup status module.




                     Figure 31: Example of a log file analyzed by the call setup status module




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Actix Analyzer UMTS Analysis Guide November 2005                                       Feature Overview 28


3.2.10 Call Sequence Analysis Module
        The Call Sequence Analysis module offers a general overview on how call failed and when              2
        they failed. This module has the same structure and analysis as the call setup status
        module except for a few differences. It doesn’t summarize as what is the cause of the
        failure. On the other hand, it gives the call sequence with detailed information on every
        call and the outcome of it. It gives the engineer the possibility to look at individual calls on
        a message-by-message basis.




                   Figure 32: Example of a log file analyzed by the call sequence analysis module




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 29


3.2.11 Call Statistics Module (CS or PS)
        The Call Statistics Module helps the engineer to have a quick look at the overall                 2
        performance during a specific drive test. The following parameters' statistics are defined in
        each file:
        Total Number of calls: Number of Mobile Originated Calls (MOC) + Number of Mobile
        Terminated Calls (MTC). This includes all calls, even failures.
        Successful Incoming Calls: Number of successful Mobile Terminated Calls (MTC). To be
        successful, a call needs to follow the call sequence as mentioned in section 3.2
        Successful Outgoing Calls: Number of successful Mobile Originated Calls (MOC). To be
        successful, a call needs to follow the call sequence as mentioned in section 3.2


        Total Successful Calls:
        Successful Incoming Calls +
        Successful Outgoing Calls
        Connected Percentage: Total
        Successful Calls/Total number
        of calls * 100
        Call Failures – Incoming:
        Access Failure for a Mobile
        Terminated Call (MTC) as
        defined in section 3.2
        Call Failures – Outgoing:
        Access Failure for a Mobile
        Originated Call (MOC) as
        defined in section 3.2
        Access Failure Rate: Total
        Access Failures/Total number
        of calls * 100
        Total Drops: Total number of
        dropped calls. A dropped call is
        defined as one of the
        following:
        Drop Rate percentage: Total
        Drops/Total Successful Calls *
        100
        Total Completed Calls: Total
        number of completed calls. A
        completed call is defined as
        the following:
        Success Rate: Total completed
        calls/Total Successful Calls *
        100




                                                      Figure 33: Example of a log file analyzed by the
                                                                   Call Statistics Module




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Actix Analyzer UMTS Analysis Guide November 2005                                      Feature Overview 30




3.2.12 Call Sustainability Module                                                                           2

        The call sustainability
        module helps the
        engineer to have a
        quick view at the call
        duration for all calls
        during the drive route.
        The statistic is
        calculated on a per call
        basis and is the
        difference in time
        when the call ends and
        when the call starts.
        More precisely:
        Call Sustainability =
        Time when RRC
        Connection request
        happens (or paging
        type 1) – Time when
        call drops or ends.
        Figure 34 shows the
        call sustainability
        statistics and the call
        duration distribution.




                                                   Figure 34: Example of a log file analyzed by the
                                                              call sustainability module




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Actix Analyzer UMTS Analysis Guide November 2005                                        Feature Overview 31


3.2.13 Call Timing Analysis Module
        The Call Timing Analysis gives various time statistics on differences between specific                2
        messages. In cases where the RRC Connection Request terminology is used, it relates to
        the first RRC Connection Request message transmitted.




                    Figure 35: Example of a log file analyzed by the call timing analysis module




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Actix Analyzer UMTS Analysis Guide November 2005                            Feature Overview 32


3.2.14 File Summary Module
        The file summary module helps the                                                         2
        engineer to visualize quickly the
        content of a file. The thresholds for
        the coverage and quality charts are:
        Coverage:
        Good: RSCP > -80 dBm
        Fair: -80 dBm >= RSCP >= -95 dBm
        Poor: -95 dBm > RSCP


        Quality:
        Good: Ec/Io > -8 dB
        Fair: -8 dB >= Ec/Io >= -15 dB
        Poor: -15 dB > Ec/Io




                                                   Figure 36: Example of a log file analyzed
                                                         by the file summary module




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 33


3.2.15 Coverage Summary Module
        The file summary module helps the engineer to visualize quickly the statistics related to         2
        the strongest RSCP and the strongest Ec/No for a particular file.




                                 Figure 37: Example of a log file analyzed by the
                                           coverage summary module




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Actix Analyzer UMTS Analysis Guide November 2005                             Feature Overview 34


3.2.16 Handoff Breakdown Analysis Module (Handset)
        The Handoff State Analysis                                                                    2
        module for handset uses the Real
        Active Set from the handset to
        determine the handoff state at
        each point along a drive test.
        Statistics on handoff state may
        then be calculated and presented
        in a report format. Excessive
        handoff state reduces capacity
        and increase infrastructure costs
        for a given traffic level. Please see
        section 3.2.3 for more details on
        the Handoff State Analysis for
        scanner.
        The handoff state algorithm has
        the following components:
        Using the geographic information
        in the log file and the SC, the
        network element database is
        searched to identify the Sector
        and Cell IDs of the SC
        Handoff state is calculated by
        determining the configuration of
        the sectors in the Active Set as
        shown in Figure 23 – Section
        3.3.3
        All bins in the log file are then
        processed into the handoff state
        matrix
        The Actual SHO Overhead
                                                   Figure 38: Example of a log file analyzed by the
        represents the sum of all soft-                         handoff state analysis for handset
        handoff configurations
        Reports showing the percentage
        of handoff state for each sector
        and for the total drive test may
        then be calculated as shown in
        Figure 38.




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 35


3.2.17 SHO per event 1a-1b-1c Module
        The SHO per event 1a-1b-1c module gives a brief summary about the different types of              2
        handoff that occur in a file. It shows quickly the number of:
        Addition: Event 1a
        Removal: Event 1b
        Replacement: Event 1c


        Also, it reports the number of completion for each of those events and calculates a
        percentage of success.




                                 Figure 39: Example of a log file analyzed by the
                                       soft-handover performance module




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Actix Analyzer UMTS Analysis Guide November 2005                                      Feature Overview 36


3.2.18 Overall BLER Module
        The overall BLER (Block Error                                                                          2
        Rate) module gives a brief
        summary about the
        distribution and statistical
        analysis of BLER for an entire
        file.




                                                   Figure 40: Example of a log file analyzed by the Overall
                                                                       BLER module




3.2.19 BLER Per call Module
        The BLER per call module
        gives a summary of the main
        statistics associated with the
        BLER on a call-by-call basis.
        The maximum value
        The minimum value
        The average value for that
        particular call




                                                   Figure 41: Example of a log file analyzed by the BLER per
                                                                         call module




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 37


3.2.20 BLER during SHO Module
        The BLER during SHO (soft handover) module provides statistics on the downlink transport          2
        channel BLER aggregated across all SHOs and on a call-by-call basis (note that only the
        calls with BLER measurements during the SHO procedure will be included in this report.




                                 Figure 42: Example of a log file analyzed by the
                                            BLER during SHO module



3.3 Filters
        Filters can be added to Analyzer to implement task or application-specific functionality.
        Analyzer includes the following pre-defined filters:

            •   Poor Mobile Receive Power
                CPICH_RSCP_in_ActiveSet[0] < -95 dBm

            •   High Mobile Transmit Power
                UeTransmittedPower > 0 dBm

            •   Low Mobile Transmit Power
                UeTransmittedPower < -30 dBm

            •   High Mobile Receive Power
                CPICH_RSCP_in_ActiveSet[0] > -80 dBm

            •   Poor Ec/No
                CPICH_EcNo_in_ActiveSet[0] < -15 dB

            •   High Ec/No
                CPICH_EcNo_in_ActiveSet[0] > -8 dB




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 38



3.4 Stateforms
                                                                                                          2
        Stateforms can be added to Analyzer to implement task or application-specific
        functionality. Analyzer includes the following stateforms:

        •   UMTS Data Event                                      •    UMTS UE Call Information

        •   Navigator                                            •    UMTS UE Measurements Charts

        •   UMTS Data Session                                    •    UMTS UE Radio Parameters

        •   UMTS Throughput                                      •    UMTS UE Transport Channel Info

        •   UMTS Top 10 Scan                                     •    UMTS Voice
            Measurements
                                                                 •    Event Navigator
        •   UMTS UE Active + Monitored Set


3.4.1 UMTS Data Event Navigator
        The UMTS Data Event Navigator stateform allows the engineer to view the entire drive test
        with just one quick look. During a data session, it is possible to keep track of the following
        events:

        •   GPRS_PDPContextAct_Successful

        •   GPRS_PDPContextDeact_Successful

        •   GPRS_Attach_Successful

        •   GPRS_Detach_Successful

        •   GPRS_PDPContextAct_Failure

        •   GPRS_RAU_Successful

        •   Event_Task_Start
        While keeping track of the current SC in the active set. Figure 42 shows an example of
        those different events at different moments in time with the track at the top showing the
        SC.




                                 Figure 43: Example of a log file analyzed by the
                                      UMTS Data Event Navigator Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 39


3.4.2 UMTS Data Session
        The UMTS Data Session stateform allows the engineer to view the data testing information          2
        collected during a data session.




                                 Figure 44: Example of a log file analyzed by the
                                          UMTS Data Session Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 40


3.4.3 UMTS Throughput
        The UMTS Throughput stateform chart allows the engineer to view the application and IP            2
        downlink throughput graphically for the entire drive test. This information comes from the
        data testing information collected during the drive test.




                                 Figure 45: Example of a log file analyzed by the
                                          UMTS Throughput Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 41


3.4.4 UMTS Top 10 Scan Measurements
        The UMTS Top 10 Scan Measurements stateform allows the engineer to view important                 2
        details regarding the scanner measurements. The following parameters are displayed at
        any specific moment during the drive test replay:

            •   Top 10 Scrambling Code based on their Ec/Io

            •   Top 10 Ec/Io for these respective SC

            •   Top 10 RSCP for these respective SC

            •   Global RSSI




                                 Figure 46: Example of a log file analyzed by the
                                   UMTS Top 10 Scan Measurements Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 42


3.4.5 UMTS UE Active + Monitored Set
        The UMTS UE Active + Monitored Set stateform allows the engineer to visualize rapidly the         2
        content of the active and monitored sets at any specific moment during the drive test. The
        following parameters are represented for both the active and the monitored sets.

            •   The Scrambling Code

            •   The Ec/No for each of those scrambling code

            •   The RSCP for each of those scrambling code

            •   The Pathloss if applicable
        It is a very quick way for the engineer to follow the active and monitored sets. Using the
        replay tool, the engineer can follow the drive test and analyze very quickly any particular
        events.




                                 Figure 47: Example of a log file analyzed by the
                                   UMTS UE Active + Monitored Set Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                      Feature Overview 43


3.4.6 UMTS UE Call Information
        The UMTS UE call information stateform allows the engineer to have a quick view at the              2
        following events:

        •   IMSI – Mobile’s Identification                        •    Paging
            number used for testing
                                                                  •    In Call
        •   Called Party – Number called for
            that particular test/call                             •    Security Mode Command

        •   Calling Party – In case of mobile                     •    Security Complete
            terminated calls, the number of
            the party that called                                 •    CC Setup

        •   Call id – The call identification                     •    Authentication Request
            based on the UMTS call tracker
                                                                  •    Authentication Response
        •   Call State – The state the mobile
            is on. Different states are:                          •    CC Call Proceeding

        •   Init                                                  •    RAB Setup

        •   Idle                                                  •    RAB Complete

        •   RRC Con Request                                       •    Channel Reconfig

        •   RRC Con Setup                                         •    Radio Bearer Reconfig

        •   RRC Setup Complete                                    •    GSM Mode

        •   Outgoing Call Setup                                   •    LAC

        •   Incoming Call Setup                                   •    RAC




                                  Figure 48: Example of a log file analyzed by the
                                        UMTS UE Call Information Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 44


3.4.7 UMTS UE Measurements Charts
        The UMTS UE Measurements Charts stateform allows the engineer to look at the most                 2
        important information in a log file. It is very easy to visualize rapidly the following
        parameters:

            •   EcNo – Uu_ActiveSet_EcNo

            •   RSSI – UTRA_UE_CarrierRSSI

            •   TxPower – UE_TxPow

            •   SIR – Uu_SIR

            •   SIR_Target – Uu_TargetSIR




                                 Figure 49: Example of a log file analyzed by the
                                    UMTS UE Measurements Charts Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 45


3.4.8 UMTS UE Radio Parameters
        The UMTS UE Radio Parameters stateform allows the engineer to view radio parameters at            2
        a specific moment during the drive test. The available parameters are:

            •   TxPower

            •   RSSI

            •   SIR

            •   SIR Target

            •   UTRA_ARFCN_DL




                                 Figure 50: Example of a log file analyzed by the
                                      UMTS UE Radio Parameters Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                    Feature Overview 46


3.4.9 UMTS UE Transport Channel Info
        The UMTS UE Transport Channel Info allows the engineer to visualize the BLER per channel          2
        and also the aggregate BLER.




                                 Figure 51: Example of a log file analyzed by the
                                   UMTS UE Transport Channel Info Stateform




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Actix Analyzer UMTS Analysis Guide November 2005                                       Feature Overview 47


3.4.10 UMTS Voice Event Navigator (CS Only)
        The UMTS Voice Event Navigator stateform allows the engineer to view the entire drive                2
        test with just one quick look. During a session, it is possible to keep track of the following
        events:

            •    Uu_OutgoingCallOK

            •    Uu_IncomingCallOK

            •    Uu_OutgoingCallSetupFail

            •    Uu_IncomingCallSetupFail

            •    Uu_CallDropped

            •    Uu_CallCompleted


        While keeping track of the current SC in the active set. Figure 51 shows an example of
        those different events at different moments in time with the colored track at the top
        showing the SC.




                Figure 52: Example of a log file analyzed by the UMTS Voice Event Navigator Stateform




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Actix Analyzer UMTS Analysis Guide November 2005   Feature Overview 48




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