05 Genex Assistant Wcdma(Ver2.3)

www.huawei.com Huawei confidential, 2010-051

Huawei GENEX SeriesHuawei GENEX Series

GENEX Assistant WCDMA(V200R003)


After studying, you will learn:

• How to analyze the drive test data by using the GENEX Assistant

• How to use the analysis function provided by the GENEX Assistant


Functions and Features of the GENEX Assistant

� Basic Features

� Special Features of the HSDPA

� Special Features of the HSUPA

Cases

Contents


Application Designing of the GENEX Assistant

�Requirements for drive test data post-processing software Being the data post-processing software designed for drive test, that is, air interface test, the GENEX Assistant enables

you to effectively and accurately analyze data, learn the network performance, locate network problems, and export the results. Thus, the GENEX Assistant is designed to have the following features:

�Providing multiple data processing mechanisms, such as binning, filtering, and combining

�Directly displaying data

�Automatically generating various kinds of optimization reports

�Effectively and quickly processing a large amount of data

�Providing user-friendly interface and human-based functions

�Functions:�Decreasing the technical requirements for optimization engineers and improving work efficiency

�Quickly optimizing the network, thus helping to shorten the project period, and reduce the cost of human power and time

�Finding potential network problems in time

�Exporting analysis results according to standards and providing accurate evaluation

�Helping to back up or archive projects and cases


Effective Data Processing Mechanism of the GENEX Assistant

�Types of data supported by the GENEX Assistant

The GENEX Assistant can support the drive test data collected by the Probe. The GENEX Assistant is the only post-processing software that can support the combined analysis on the drive test data and the user tracing data on the Huawei RNC side.

The GENEX Assistant applies to the LTE, WCDMA, HSDPA, GSM, WiMAX, GPRS, or EDGE.

�Data processing method of the GENEX Assistant

The GENEX Assistant processes data by dataset, thus helping to manage a large amount of data securely, effectively and stably, and to improve the methods of updating, backing up and archiving previous optimization projects. In addition, the GENEX Assistant can provide:

�Four geographic binning modes

�Three data sampling methods

�Data dispersing

The GENEX Assistant can use different data binning and sampling methods to significantly improve the analysis efficiency.


Powerful Intelligent Report System

�Types of reports that can be generated by the GENEX Assistant intelligent report system

WCDMA DT report, WCDMA KPI report, WCDMA delay report, WCDMA call analysis report, WCDMA application layer analysis report, GSM analysis report, and so on. All types of reports in the GENEX Assistant are integrated into the GENEX Assistant intelligent report system.


Detailed Report Function

Excel Report


Scanner neighboring cell analysis report, comparison and analysis report of the UE CPICH measurement results before a call end or before and after a call drop, UE soft handover performance analysis report, and so on

WCDMA Scanner neighboring cell list

WCDMA UE inter-frequency handover success rate

CPICH measurement results before a call end or before and after a call drop

Analysis Report



Word ReportIncludes custom report and WCDMA DT report



Word Report Settings

Right-click the Dataset node, and then choose Analysis Report > Report Wizard. Click Next. Double-click Custom Report, and then set the options of the Word report. Three types of reports can be generated. They are IE, EVENT, and KPI. You can select one as required.

IE

Event

Set the sequence of reports.

KPI

Select a technology.


GENEX Assistant Settings�Assistant settings

You can set the following parameters in the GENEX Assistant:

�WCDMA BLER epinasty ratio threshold

�GSM analysis settings, including:

1. Coverage Drop

2. RxQual Drop

3. RxLev Drop

4. IsLand

5. Frequent Handover

�Import filtering settings

You can determine whether to import neighboring GSM cells and GSM Mac signaling.

�Load attribute threshold settings

If the size of the file to be imported is greater than this threshold, the attribute data is not loaded.

�WCDMA KPI settings, including:

1. EC/IO and RSCP thresholds of coverage

2. PDP activation success rate

Set to the RRC request statistics mode or the PDP request statistics mode.

3. Whether to display PS data service events and KPIs. By default, they are not displayed.


Viewing Test Plans and History Operation Records

�Viewing test plans and history operation records

� Viewing test plansIn the GENEX Assistant, you can view the test plans set in the GENEX Probe.

� Viewing history operation recordsYou can view the time a project is operated, the time a data set is created, and the time spent in importing data, and so on.


To analyze drive test data by using the GENEX Assistant, do as follows:

1. Install the GENEX Assistant. The GENEX Shared components must also be installed.

2. Insert the dongle. USB dongle are supported.

3. Create a project. Set the save path of the project and the map path.

4. Create datasets. Select the geographic binning mode and data collection mode.5. Import test data.

6. If multiple test data is available, you can combine the devices to analyze all test data.

7. Import configuration parameters, for example, engineering parameters.

8. Display the data in the format of map, chart, or table, and analyze the data.9. Generate various kinds of analysis reports.

10. Generate a final report based on the analysis reports and the data exported.

Workflow of the GENEX Assistant


Precautions for Data Analysis Through the GENEX Probe and GENEX Assistant

� Before the analysis, obtain the test files from the related owner and check the test records to know the general details of the test.

� The version of the GENEX Assistant must be the latest. If you are not sure whether the version is the latest, contact the project leader.

� Auto combination and UE combination can be used for the data import of the GENEX Assistant. Pay attention to the differences between the two combinations. Currently, the Auto combination is recommended. The differences between the two combinations are as follows:

• Auto combination

• 1. This combination is applicable to the case that multiple files are divided during a drive test.

• 2. Each UE is used for testing the same service.

• 3 . Time overlapping cannot occur in data. Events are judged according to signaling. Therefore, if time overlapping occurs in the data, calls overlap with each other and the events are misjudged.

• UE combination

• If time overlapping does not occur in two UEs and the time difference is greater than 10 seconds, the events of the UEs are accumulated but not re-judged.

• If time overlapping occurs in two UEs, the time of the latter UE is offset by one day so that the time overlapping can be avoided.

• If the IMSIs of two UEs are different, the events of the UEs are accumulated but not re-judged.


Precautions for Data Analysis Through the GENEX Probe and GENEX Assistant

� The GENEX Assistant can perform all the chart statistical functions and analyze

problems. Analysis engineers need to be familiar with the signaling process.

Moreover, the GENEX Assistant can replay data. The GENEX Probe is used for foreground tests, and the GENEX Assistant is used for background analysis.

� By using the GENEX Probe, you can collect statistics and provide charts and

reports. If you need to observe more indexes for locating a certain problem, you

can use the GENEX Probe to replay data. Currently, the software version is updated frequently. Therefore, it is suggested that you start the GENEX Probe

during the replay and choose Configuration > System Configuration > Others >

Event Re-judge to re-judge data events. Pay more attention to the replay of earlier data.


Setting Datasets

Four binning modes:•No binning•Distance binning•Grid binning: groups the measurement results by grid, and selects the central part of the grid.•Time binning: averages the measurement data collected within a period of time by time interval.Three data sampling modes:•Average value: indicates the average value of the data collected from all points in an area after the currently performed binning.•Max value: indicates the maximum value of the data collected from all points in an area after the currently performed binning.•Min value: indicates the minimum value of the data collected from all points in an area after the currently performed binning.•Data dispersing:Disperses the data. In the case of bus stop in a drive test, test data is concentrated on one point. The GENEX Assistant disperses the data collected during bus stop into the data collected several seconds before the bus starts off. In this way, the data can be evenly displayed on the map.


You need to select special data processing methods for different scenarios.

Data binning can effectively reduce the affects brought by fast fading.

No Binning

No binning is based on the analysis of original test data. In general, no binning applies to the synchronous analysis of events and signaling.

Advantage:

�You can locate each event and signaling, and solve the problem.

Disadvantages:

�You need to process a large amount of data.

�The original test data is distributed in a non-coherent way.

Data Binning


Distance BinningDistance binning is usually used to analyze drive test data, and can also be used to quickly process the CW

test data and analyze the network coverage.

Advantages:

�Distance binning samples data by equidistance on the unidirectional route.

�Distance binning avoids congregation of sampling points. The point congregation can be caused by long time stops, for example, the car stops caused by traffic stop signals.

�Distance binning is of high efficiency.

Disadvantage:

�Distance binning is not applicable to repeated routes. There are various kinds of repeated routes, for example, the route in the scenario of crossing a bridge.

Example of distance binning: compares the average data before and after the distance binning which takes 5 meters as interval. The prerequisite for distance binning is that the vehicle cannot be in high speed.

5 meter

Data Binning


Grid BinningGrid binning effectively complements the geographic binning mode by being applied to repeated routes.

Advantages:

�Grid binning can be used to perform geographic binning on repeated routes.

�Grid binning avoids congregation of sampling points caused by long time stops. For example, the car stops because of traffic stop signals.

�Grid binning is of high efficiency.

Disadvantages:

�Time delays occurs on the repeated routes.

�The size of the grid cannot be too large.

Example of data binning: compares the average data before and after the grid binning which takes 5 meters * 5 meters as a grid.

5m x 5m

Data Binning


Time BinningTime binning requires that the vehicle runs at a stable rate and can be used to analyze special KPIs within a continuous period.

Advantages:

�Time binning is used to analyze the data that is tested at a stable rate.

�Time binning samples the maximum or minimum data by using a predefined interval within a continuous period, and analyzes some special KPIs.

�Time binning is of high efficiency.

Disadvantage:

�If the vehicle runs at an unstable rate during testing, the intervals of test data cannot be the same.

Example of time binning: compares the average data before and after the time binning which takes 1 second as interval.

1 second

Low speed

Data Binning

High speed


Time BinningFor example, to learn the BLERs in some intervals, you need to:

1. Set Binning Param Time Span (s) to four.

2. Set Value Fetch to Min Value.

The table below shows that the minimum BLER value within four seconds is greater than 5%. In this case, you can infer that problems may occur during data transmission.

The minimum BLER value within four seconds is greater

than 5%.

Data Binning


The GENEX Assistant can support the

test data of the following devices:

� GENEX Probe

� Huawei RNC

� MDM

� TXT

� WiMAX LMT

� LTE LMT

Importing Test Data

The GENEX Assistant can analyze the network of the LTE, WCDMA, HSDPA, HSUPA, GSM, GPRS, EDGE, CDMA and WiMAX.


You can perform the following operations in the map window:

•Setting the layer deviation

•Displaying the actual serving cells

•Playing the test routes forward or backward

•Displaying the coverage area of a cell or a BTS

•Displaying drive test tracks

•Searching for a BTS

•Locking a certain area

•Automatically synchronizing the color of a BTS

•Managing map layers

•Measuring distance

•Copying the interface to image

•Filtering, for example, filtering by time or area

Displaying Test Data on the Map


Displaying Data in the Format of Chart

The GENEX Assistant supports the following types of charts:

•Time chart

•PDF chart

•CDF chart

•Double-axis chart

•Pie chartDisplaying Data in the Format of TableTo display data in the format of table, do as follows:�Search for information about a cell on the list. �Find the maximum and minimum value. �Calculate the average value or mean deviation of the data in the selected area.

Displaying Test Data in the Format of Chart or Table


This function can be used to simultaneously display the relevant information in multiple windows, thus helping to quickly query the event and the information related.

Multi-Window Co-Activation


Presentation of Test Indicators on Google Earth

Assistant V200R003 supports the embedded Google Earth. Therefore, the test indicators can be displayed on the Google Earth. This facilitates the in-depth analysis on the Assistant.


�Filtering by Logical ConditionFiltering by logical condition is used to filter bad spots or locating problematic areas.

�Filtering by Time

Filtering Test Data

Before

After

Filtering by time is used to identify repeated routes.


�Filtering by Special Area

Filtering Test Data

Before filtering

After filtering

�Displaying the Coverage Area of a BTS or a Cell

Select a set of data on the open map, and then click Lock Selected Items.

After filtering

•Select a BTS or a cell on the map.•Right-click the BTS or the cell, and then choose Show Range of Cell or ServingCell Coverage.•Select the cell whose coverage area you plan to view.


Method:

• Select a BTS on the map.

• Right-click the selected BTS, and then choose Show ConfigNeighbor Cell.

• In the left pane, select a service cell.

• The neighboring relation is displayed in the right pane. If you select only one neighboring cell, only one neighboring cell is displayed on the map. You can also hold down Shift to select multiple neighboring cells.

Displaying Neighboring Cell Configuration on the Map


Customizing IE legends

Customizing event legends

Customizing Legend


Word Collector

The data in a chart or table in the GENEX Assistant can be directly exported in .doc format by using the Word Collector.


Analyzing Indexes

• Selecting the items to be analyzed under the indicator node

Each indicator can be geographically displayed in the data table, pie chart, bar chart, chart, or on the map.


The simulation events are as follows:

• Soft handover

• Pilot pollution

They are used for:

• Neighboring cell optimization

• Pilot pollution analysis

• Call drop analysis

The GENEX Assistant also supports the CIO settings to ensure that the simulation is more like the actual network.

For details, see "Case1. Analyzing Pilot Pollution Problem" and "Case2. Handover Event simulation by Scanner Data."

Scanner Simulation Event


Evaluation of site reparenting/site being removed from service and evaluation of the impacts of emergency faults in hot spots

What the impacts on the network when a site or cell is removed from service? This seems a prediction task at the network planning stage. It, however, still needs to be evaluated at the optimization stage.

The GENEX Assistant provides such an evaluation function. It can be used to predict the impacts if the cell (SC45) shown in the following figure is disabled.

Using Planning methods for Optimization Analysis

Compare the predication result and the actual measurement result plus the offset.


Uplink and downlink data synchronization analysis

The GENEX Assistant supports the import of Huawei RNC data, including the signaling of UEs, NodeBs, and CN.

After the imported data is synchronized with the GPS time, the GENEX Assistant can display the drive test data and the test data of the RNC concurrently for analyzing the uplink and downlink data including the data of the RNC single UE signaling trace.

Analysis by Using RNC Data

RNC data

Drive test data

Uplink Uplink datadata

Downlink dataDownlink data


Uplink and downlink data synchronization analysis (Continued)

Analysis by Using RNC Data

Advantages of RNC data:• It can completely display the signaling interaction information about radio interfaces• After being synchronized with the GPS time, it can be displayed on the map for locating the area where the uplink coverage is faulty.


Contents


� Basic Features



Cases


HSDPA KPIs:

• HSDPA rate statistics

• HSDPA channel quality

• HSDPA decoding statistics

HSDPA Test Data AnalysisHSDPA Test Data Analysis


HSDPA KPI DisplayHSDPA KPI Display

HSDPA rate statistics and channel quality

Indicates the average number of codes used by a UE. The average period is 200 ms

HS-PDSCH Codes

Indicates the retransmission rate of the HS-DSCH channel (transient value)

HS-DSCH Retrans Rate (Delta)

Indicates the channel quality indicatorHS-DPCCH CQI

Indicates the usage ratio of the HS-SCCH channel (transient value)SCCH Success Rate (Delta)

Indicates the block error rate at the MAC layer (transient value)DSCH SBLER (Delta)

Channel quality

Indicates the rate delta of transmission at the MAC layer, excluding the rate of failed transmissions and retransmissions

MAC Layer Rate (Delta)

Indicates the rate delta of transmission at the MAC layer, including the rate of failed transmissions and retransmissions

Served Rate (Delta)

Indicates the rate delta of scheduling data at the MAC layerScheduled Rate (Delta)

Rate statistics

DescriptionCounter NameCounter Type


Decoding statistics

There are three types:

• Collecting statistics of decoding counters by drive test files

• Collecting statistics of decoding counters by all TBS statistics

• Collecting statistics of by each TBS

HSDPA KPI DisplayHSDPA KPI Display

By drive test files

Statistics of all TBS

By each TBS


HSDPA KPI DisplayHSDPA KPI DisplayHSDPA decoding statistics

Indicates the number of frames that fail to be transmitted at the RLC layer. After several failures at the MAC layer, the RLC initiates the retransmission

Block -

Indicates the SBLER of the first frame at the MAC layer 1st

Indicates the served block error rate. This parameter is calculated based on the following formula: Number of transmission failures / Total number of transmissions x 100%

SBLER

Indicates the number of frames successfully transmitted at the MAC layer during the first transmission 1

Indicates the block error rate at the RLC layer. This parameter is calculated based on the following formula: Number of frames that fail to be transmitted at the RLC layer/ Total number of transmissions at the RLC layer x 100%

Res. BLER

Indicates the number of frames successfully transmitted at the RLC layer. The Block+ equals SB+ Block +

Indicates the number of frames successfully transmitted in the fourth retransmission after the first three transmissions fail 4

Indicates the number of frames successfully transmitted in the third retransmission after the first transmission and the second retransmission fail

3

Indicates the number of frames successfully transmitted in the second retransmission after the first transmission fails 2

Indicates the number of frames successfully transmitted in the sixth or later retransmission after all the previous transmissions fail >=6

Indicates the number of frames successfully transmitted in the fifth retransmission after the first four transmissions fail 5

Indicates the number of exceptional frames, for example, the frame whose TBS of the current successful retransmission is different from that of the latest successful transmission

Other

Indicates the number of NACK messages to which the NodeB translates the ACK messages returned by the UE upon successful decoding

Dup. SB +

Indicates the number of frames successfully transmitted at the MAC layer SB +

Indicates the number of frames modulated in 16 quadrature amplitude modulation (16QAM) mode 16QAM

Indicates the number of frames modulated in QPSK mode QPSK

Indicates the transport block size. Each frame transmits only one TB TBS

DescriptionCounter Name


Contents


� Basic Features



Cases


HSUPA KPIs:

• HSDPA rate statistics

• HSDPA power statistics

• HSDPA decoding statistics

HSUPA Test Data AnalysisHSUPA Test Data Analysis


HSUPA KPI DisplayHSUPA KPI DisplayHSUPA decoding statistics


Documents

05 Genex Assistant Wcdma(Ver2.3)