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Actix Release Notes

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									Release Notes
Actix drive test troubleshooting solutions


February 2005 Release
                                                                                                   Release Notes



Contents
  1   SYSTEM REQUIREMENTS ................................................... 4
                   Hardware requirements ....................................................................... 4

  2   NEW: CLUSTER ACCEPTANCE ........................................... 5
            WHAT IS CLUSTER ACCEPTANCE? ............................................ 5
                   Actix cluster acceptance compared with traditional processes............ 6
                   Traditional RF testing process ............................................................. 6
                   Traditional data service testing process .............................................. 6
            THE ACTIX CLUSTER ACCEPTANCE PROCESS............................. 7
                   Cluster acceptance with other Actix processes ................................... 7
            BUILDING AN ACTIX CLUSTER ACCEPTANCE SOLUTION ............... 8

  3   NEW: EGPRS DT TROUBLESHOOTER ............................... 9
                   Load the data....................................................................................... 9
                   Identify and prioritize the issues using the Dashboard ........................ 9
                   Diagnose the cause ........................................................................... 10
                   Confirm problem resolution................................................................ 10

  4   WHAT ELSE IS NEW OR IMPROVED? ................................. 11
            UMTS DT TROUBLESHOOTER............................................... 11
                   New UMTS thresholds....................................................................... 12
                   UMTS_DT_Troubleshooter_CriticalIssues_Threshold ...................... 12
                   UMTS_DT_Troubleshooter_ImportantIssues_Threshold .................. 12
                   UMTS_DT_Troubleshooter_MissingNeighbours_Threshold ............. 12
                   Uu_MaxTimeBetweenRRC_REQandCallStart .................................. 12
                   Uu_Scan_PilotPollutionThreshold ..................................................... 12
                   Uu_Scan_TooManyServersThreshold............................................... 12
            CUSTOMIZING TROUBLESHOOTER .......................................... 13
                   Actix-defined KPIs ............................................................................. 14
            SCREEN LAYOUTS ................................................................ 14
                   To create a Screen Layout ................................................................ 14
                   To open a Screen Layout .................................................................. 16
                   Different screen resolutions ............................................................... 16
                   Screen Layout configuration files....................................................... 16
                   Share Screen Layouts ....................................................................... 17
            BUG FIXES ........................................................................... 17
                   UMTS Event Engine fix...................................................................... 17

  5   KNOWN ISSUES .............................................................. 18



                                                Actix drive test troubleshooting solutions • Page 2
                                   Release Notes




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                                                                                        Release Notes




1                  System requirements
                                   This section defines the recommended and minimum system
If you install an Actix Solution   requirements for successfully running Actix Solutions.
on a system that does not
meet the recommended
configuration requirements,        Hardware requirements
you may suffer from:
                                   Actix Solutions are 32-bit applications that run on the following
    Inability to process large     Microsoft operating systems (Windows XP or 2000 is strongly
    amounts of data                recommended) and their latest service packs:
    Delays when trying to
    perform certain tasks
                                   Recommended:          MS Windows XP

    Failure of some mapping        Alternative:          Microsoft Windows 2000
    capabilities
                                   Because Actix Solutions use system memory in a much more
    Low performance of             efficient way on later operating systems (especially Windows
    advanced correlation and       2000), we strongly recommend that you upgrade to one of these
    analysis capabilities
                                   systems.


Hardware                           Optimal performance             Minimal performance
Processor:                         P4 2.6+ GHz                     Pentium 1 GHz
Memory (RAM):                      1+ GB                           512 MB
Disk space:                        60+ GB available                1 GB available
CD-ROM drive:                                        – To install the application –
One Parallel or USB                               – For single-user hardware key –
Port:
Monitor:                           1280x1024x64K color             1024x768x256 color resolution
                                   resolution or higher
Other:                                                – Mouse and keyboard –


                                   Actix Solutions perform best when the Windows Virtual Memory
                                   Paging size is set to between 1000 and 1500 MB. The method for
                                   setting this parameter varies by operating system. Please consult
                                   your OS help for specific instructions regarding this parameter.



                                                    Actix drive test troubleshooting solutions • Page 4
                                                                      Release Notes




2       New: Cluster Acceptance

What is cluster acceptance?
                Cluster acceptance, also known as bubble acceptance, field
                integration test (FMT) or first market application (FMA), is
                critical to ensuring quality during the rollout of any new RF
                technology. It is the process by which operators test that specified
                quality targets are actually achieved, both consistently and
                efficiently across the network.

                Targets are specified in the form of key performance indicators
                intended to represent both network performance and user-
                perceived service performance. Regional rollout teams work
                through the network to build and validate clusters of around 20
                cells at a time. When these teams believe that a cluster has met
                target performance, they are required to validate this with KPI
                reports. Rollout is often performed by the vendor as a turn-key
                solution. In this case it is even more important to implement a
                cluster acceptance process to ensure that vendors meet their
                contractual obligations.

                A reliable cluster acceptance process ensures that:
                •   Vendors keep their contractual commitments
                •   Quality targets are met and achieved consistently in all regions
                •   Deadlines can be met reliably and efficiently
                Cluster acceptance can be a very complex, manual, error-prone and
                time-consuming process. Now, however, Actix can provide a
                cluster acceptance solution, ensuring:
                •   Fast and cost-effective rollout by generating KPI reports in
                    minutes not days.
                •   Simple, standard process for every engineer, every vendor, and
                    every region.
                •   Maximum launch performance.



                                 Actix drive test troubleshooting solutions • Page 5
                                                                                     Release Notes


Actix cluster acceptance compared with traditional processes

Traditional RF testing process                        Traditional data service testing process
An RF-testing process ensures that coverage           A data-testing process ensures that data service
and interference performance meets targets. It        performance meets targets which model the
should also verify basic voice service KPIs.          subscriber experience.




The traditional process is:                            The traditional process is:
    •   Complicated                                        •   Ad-hoc
    •   Time-consuming                                     •   Sample only
    •   Labor-intensive                                    •   Unreliable – at the mercy of too many
    •   Repetitive                                             external factors
                                                           •   Labor-intensive
    •   Error-prone
                                                           •   Time-consuming




                                                 Actix drive test troubleshooting solutions • Page 6
                                                                               Release Notes




The Actix cluster acceptance process
                         Actix simplifies RF testing and data service testing. It can:
                         •   Replace a series of complex steps with a single, automated
                             process
                         •   Provide radio performance as well as data services
                             performance
                         •   Standardize the process so that every engineer / vendor / region
                             can work to same benchmark
                         •   Be easily configured to reflect your business priorities




Cluster acceptance with other Actix processes
                         Cluster acceptance complements a customer’s rollout processes. It
                         is a key process in a complete rollout solution, and can be
                         integrated into existing processes. For example, an Actix-
                         configured cluster acceptance process fits together with the
                         troubleshooter process. KPI reports can be designed to guide users
                         to problem files when KPIs fail to meet acceptable targets.




                                          Actix drive test troubleshooting solutions • Page 7
                                                                    Release Notes




Building an Actix cluster acceptance solution
                Every operator has different cluster acceptance requirements.
                These will be influenced by their view of engineering priorities,
                demographic issues and the planned service mix. In particular, a
                good cluster acceptance process should exactly match the vendor’s
                contractual obligations to ensure the delivered network performs as
                promised.

                An Actix cluster acceptance solution is not a ready-made
                product. It is a configured solution, embedding an operator’s
                business goals and processes, as well as the vendor’s
                contractual commitments.




                                Actix drive test troubleshooting solutions • Page 8
                                                             Release Notes




3   New: EGPRS DT Troubleshooter
         With eGPRS DT Troubleshooter, you can diagnose complex
         GPRS/EDGE issues faster than ever, in these easy steps:
         •   Load the data
         •   Identify and prioritize
             the issues
         •   Diagnose the cause
         •   Confirm the problem
             resolution

         Load the data
         •   Configure event
             recognition thresholds
         •   Load multiple logfiles
             simultaneously
         •   Select/deselect logfiles
             and individual devices
             as required

         Identify and prioritize
         the issues using the
         Dashboard
         The DT Troubleshooter
         Dashboard displays
         aggregated information
         from the loaded data.

         The Dashboard:
         •   Highlights the critical issues: Low Throughput, RAU Failures,
             Attach Failures, and PDP Context Activation Failures .
         •   Highlights the important issue: High Cell Reselection
         •   Reviews events and design quality
         •   Summarizes all logged cell data


                          Actix drive test troubleshooting solutions • Page 9
                                                      Release Notes


Diagnose the cause
With one click from the Dashboard, you can drill down into the
data set. Follow the issues through to an analysis page, which
identifies one or more of these diagnoses for each offending
device:
•   Poor radio conditions
•   Rapidly changing radio conditions
•   Interference
•   Excessive power
    reduction
•   Low bandwidth
    allocation
•   Co/adjacent
    channel
    allocations
    between
    neighbours
•   Distant serving
    cells

Confirm problem resolution
Now, prove the diagnosis with one click. This opens appropriate
data views that let you review the diagnosis – if the diagnosis is
successful, move on to the next issue!




                  Actix drive test troubleshooting solutions • Page 10
                                                                 Release Notes




4      What else is new or improved?

UMTS DT Troubleshooter
              UMTS DT Troubleshooter now allows you to investigate packet-
              switched data as well as circuit-switched data.

              These new investigation pages are provided:
              •   Packet Switched Dropped Call
              •   Packet Switched Call Setup Failure
              •   Excessive Call Setup (Circuit-Switched)




                             Actix drive test troubleshooting solutions • Page 11
                                                                           Release Notes


New UMTS thresholds

                      UMTS_DT_Troubleshooter_CriticalIssues_Threshold
                      This threshold is used to filter out critical issues from the UMTS
                      dashboard that are equal to or less than this value. Recommended
                      value is 0.

                      UMTS_DT_Troubleshooter_ImportantIssues_Threshold
                      This threshold is used to filter out Missing Neighbour issues from
                      the UMTS dashboard that are equal to or less than this value.
                      Recommended value is 0.

                      UMTS_DT_Troubleshooter_MissingNeighbours_Thresho
                      ld
                      This threshold is used to filter out critical issues from the UMTS
                      dashboard that are equal to or less than this value. Recommended
                      value is 0.

                      Uu_MaxTimeBetweenRRC_REQandCallStart
                      This threshold is used for determining UMTS CS calls with
                      excessive setup time. Recommended value is 6000 ms.

                      Uu_Scan_PilotPollutionThreshold
                      In calculating Pilot Pollution, this threshold sets up the level of
                      interference required for pegging the events (based on scanner
                      info). When 4 or more pilots are above this threshold, it creates a
                      pilot pollution event. Recommended value is -15 dB and should be
                      in the range -18 and -10 dB.

                      Uu_Scan_TooManyServersThreshold
                      In calculating “Too Many Servers”, when 4 or more pilots
                      (including the best server) are within the threshold value in dB of
                      the best server, it creates a “Too Many Servers” event (based on
                      scanner info). Recommended value is 5 dB and should be in the
                      range 1 to 10 dB.




                                      Actix drive test troubleshooting solutions • Page 12
                                                                   Release Notes


Customizing Troubleshooter
               The DT Troubleshooter modules are designed to make it easy to
               diagnose wireless network problems by providing a user-friendly
               task-oriented interface that guides the user through the
               troubleshooting process. The modules can be used "out of the box"
               or customized to meet specific requirements. This section explains
               the customization options that are currently available and provides
               detailed information about how to use them. Using the techniques
               described in this section to customize the DT Troubleshooting
               modules requires knowledge of some advanced Analyzer features
               (such as creating screen layouts), but does not need any scripting
               or programming knowledge.




               All of the DT Troubleshooter modules follow a broadly similar
               design, central to which is the dashboard page. This provides an
               overview of network performance and lists issues (known as key


                              Actix drive test troubleshooting solutions • Page 13
                                                                                   Release Notes


                            performance indicators or KPIs) under Critical, Important, and
                            Information headings. The user can click links about critical and
                            important KPIs to open a detailed investigation. This consists of an
                            investigation page and a screen layout that are specific to that KPI.

                            Actix-defined KPIs
                            The DT Troubleshooter modules come with a number of Actix-
                            defined KPIs (sometimes simply called Actix KPIs), which can be
                            customized as follows:
                       •         You can change how a KPI is calculated by modifying the
                                threshold that is used in its formula. (Thresholds are user-
                                definable constants.) For example, the GSM formula for poor
                                signal strength is defined as any value below the
                                G_RxLevSub_Min threshold. This has a default value of -95 dBm,
                                but you can change this to any other value.
                       •         You can create a custom screen layout for the investigation. For
                                example, you could add a custom state form to the default screen
                                layout.


Screen Layouts
To create a Screen Layout
                            1     Arrange the views on your screen as required:




                                              Actix drive test troubleshooting solutions • Page 14
                                                    Release Notes


2   From the View menu, select Screen Layouts, Save Screen
    Layout to open this dialog:




    The Save Screen Layout dialog allows you determine what
    happens when the screen layout is re-opened.

    Windows to Save - This area shows a list of currently open
    windows.

    - Uncheck any windows that you do not want to include in the
    screen layout configuration.

    - Click on the window name to edit the name (for example,
    Map1 in the above example). Changing the name here will
    change the title of the window when the screen layout is re-
    opened. Note that you can only edit the names of windows.

    Close all windows before opening this layout - This
    checkbox determines what happens to other windows when the
    screen layout is opened. If the box is not checked, the new
    windows will appear on top of other windows which are
    already open.

    File Name – Specify the name and location of the Screen
    Layout configuration file.




                Actix drive test troubleshooting solutions • Page 15
                                                                               Release Notes


To open a Screen Layout
                          1    From the View menu, select Screen Layout, Open Screen
                               Layout.
                          2    Select the layout file.

                               You can also right-click on the stream name and select Screen
                               Layouts, Open Screen Layout.




Different screen resolutions
                          Screen Layouts are designed to work well on a variety of screen
                          resolutions, so Layouts designed for one resolution still function
                          well on a larger or smaller screen.

                          Stateforms and Replay are restored at a fixed rather than relative
                          size.

Screen Layout configuration files
                          When you save a Screen Layout .asl file, a layout folder with the
                          same name plus an appended "_VT" is also created in the same
                          location. The layout folder contains a configuration file for each
                          individual view within the screen layout:




                                           Actix drive test troubleshooting solutions • Page 16
                                                                                    Release Notes


Share Screen Layouts
                          Screen Layouts can be a handy tool to share an optimization
                          process throughout a group or organization. Be sure to copy the
                          sub-folder as well as the layout file.

                          For example: A team leader may define a Screen Layout for
                          troubleshooting a handover problem. By giving a copy of the
                          layout files to other users, they may all use the same process each
                          time they troubleshoot the same type of problem.



Bug fixes
UMTS Event Engine fix
                          Previously there was an issue with the UMTS event engine loading
                          log files containing “RRC connection Reject”. The previous event
                          indicated a Call Setup failure after it had received a “RRC
                          Connection Reject”, but what should happen is that the event
                          engine should highlight a Call Setup Failure after several “RRC
                          Connection Reject”.

                          This is the effect it can cause:

                  Load file VIP_050121.dt1
                                                Previous      Nemo          New
                                                 Events       Events       Events
                   Call Setup failures             38           20           20
                   Drop Calls                      3             3            3
                   Call OK                         9             9            9
                   Calc Call Setup failure      80.85%        68.97%       68.97%


                          The UMTS event engine has now been updated.




                                             Actix drive test troubleshooting solutions • Page 17
                                                                 Release Notes




5   Known Issues
         CDMA Troubleshooter script errors
         Loading files into the Troubleshooter through the File | Open
         dialog is likely to cause script error messages. To mitigate this,
         load files directly through the Troubleshooter task pages.

         Attribute Explorer occasionally blank after loading files
         Load a file from the UMTS DT Troubleshooter load data page,
         select Display Attribute Explorer from the View menu to see the
         loaded data. Click the Close All Files button and then load a new
         data file. Select Display Attribute Explorer again, and the Attribute
         Explorer is blank.

         Windows application switching locks Analyzer
         Start UMTS or CDMA DT Troubleshooter, load data, go to the
         Dashboard. Open Analysis Manager, switch to another application,
         then switch back to Analyzer. Analyzer is now frozen and has to
         be closed using the Windows Task Manager.

         UMTS DT Pilot Pollution problem
         From both handset and scanner Pilot Pollution pages, if you select
         a point on the map, selecting any subsequent operation simply
         refreshes the page and Analyzer has to be closed using the
         Windows Task Manager.

         Analysis Manager corrupts ‘Generate Aggregate Data Set flag’
         If you edit a query that contains this flag set to ‘false’, the Analysis
         Manager overrides it and re-sets it to ‘true’, which causes problems
         in the Troubleshooters. Do not override the current setting if the
         current setting is ‘false’.

         Analysis Manager query order
         Analysis Manager changes the position of a user query in the list
         once the query has been edited.




                         Actix drive test troubleshooting solutions • Page 18

								
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