owj200301 introduction to genex probe and assistant

11 11www.huawei.com Huawei confidential, 2005-04

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Huawei 3G Radio Network OptimizationHuawei 3G Radio Network Optimization

GENEX Series ProductsGENEX Series Products


HUAWEI

GENEX Probe

GENEX Assistant

System Components

Functions and Features

Application Examples



Overview of GENEX Series


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HUAWEI

GENEX Probe Is a drive-test system targeted for network performance.

It is significant for troubleshooting, verification, optimization, and maintenance of

UMTS and GSM networks.

GENEX Assistant Is a post-processing system that incorporates

analysis of drive test data and RNC data. Now it can analyze drive test data

of UMTS and RNC data at one time.

GENEX U-Net Is a network planning system for GSM, UMTS and

CDMA2000. It supports network dimensioning, coverage prediction, system

simulation, propagation model calibration, radio data tuning and auto site

selection.

GENEX Nastar Is a network performance analysis platform,

supports 2G and 3G networks. By analyzing configuration and performance

data, such as CDR data, RFMT data and RSSI data, it can develop a good

solution to network problems.


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MSC/SSP/VLR

HLR/AC

GMSC/SSP

PSTNPLMNISDN

iManagerTM M2000

GENEX Nastar 3G

GENEX Assistant 3G

GENEX Probe WCDMA

CN

Node B

Node B

Node B

RNC

RNC

Node B

Node B

Node B RNS

RNS

Network pre-planning / planning

Wireless test data

Various test data source

Integrated several optimizing & planning assistant tool

Obtain test data

GENEX Series tool kits

Parameter optimizing file

GENEX Probe

AGILENT

QUALCOMM

HUAWEI RNC

RAN Auto-deploying Platform

Performance / Deploy / Alarm /

Project parameter integration analysis

GENEX U-Net

Auto-delivery

RNC test Data

Analysis conclusion

Note: This page is based on WCDMA. Flow of CDMA2000 is similar.


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As a important tools for Huawei 3G network planning and deployment optimization, GENEX series products provides professional and highly effective planning and optimization services for customers around the world, such as Hongkong (SUNDAY), UAE (ETISALAT), Malaysia, Mauritius (EMTEL), Holland, and Tunis, and many customer pilots.

、

Dubai

Moscow

Shanghai

Shenzhen

Beijing

Hongkong

Minsk

Lisbon


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GENEX Probe

GENEX Assistant

System Components







HUAWEI

GPSGPSGPSGPS

3G UE3G UE3G UE3G UEprofessional professional

scannerscannerprofessional professional

scannerscanner

HUAWEI GENEX Probe HUAWEI GENEX Probe WCDMAWCDMA

HUAWEI GENEX Probe HUAWEI GENEX Probe WCDMAWCDMA

Probe drive test system


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Huawei U626 dual-mode commercial/testing UE LG,

Sanyo…

Qualcomm TM6250Dual-mode UE

Qualcomm TM6200dual-mode UEGARMIN series

Trimble seriesDTI SCANNER(built-in GPS) Anritsu ML8720B


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GENEX Probe

GENEX Assistant

System Components







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Visual display of data information

Display on Chart

Display on list Messages and Signaling

Display on real-time map


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Comprehensive and complete

signaling collection and decoding


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Support tests of various services Voice Call test, and VP test

PS data service test, for example,

HTTP, FTP, PING, and Video Streaming

Voice Call test

Data service test


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Support simultaneous parameter

display of voice and data services

Support status analysis of concurrent

services and event

Support concurrent service

tests

UE1 dials UE2 during dial-up network access

Concurrently record data and voice services


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WCDMA window

Synchronous decoding of 2G/3G

messages

2G/3G power information and cell

information

Events can be displayed in various

modes

2G/3G re-selection and handover test

GSM window

Customize window

Check handover time in event window


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Top N Pilot test

Top N pilot test

Specified pilot test

Spectrum analysis

Multi-frequency scanning

CW test

Multi-path signal analysis

Professional Scanner test

Spectrum test

Multi-frequency test

Multi-path signal analysis


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Rich and comprehensive predefined

events, for example, call setup, call

drop, handover and so on

Data service analysis events

2G/3G handover events

Concurrent service events

Events displayed on graphs and maps

Co-Activation of event, signaling data

and measurement data facilitates

problem location

Customized event icons and alert tones

Radio network events auto-detection


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Voice service, and VP (Call by

Call or Continuous Call)

Data service (HTTP, FTP, PING,

Video Streaming…)

Top N Pilot scan

User list Pilot scan

Sharable test plan and standard

test definition and implementation

Concurrent voice and data

services

…

Support practical test items:

Customize test plan and share experience


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Indoor walking

test

Vertical test

Provide easy-to-use indoor test module


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Configuration information and event list

You may directly observe the

statistical information of test

status, process, and test results

in the Information window

You may preview the information

when replay many log files to fast

locate the desired log file.

Test process can be observed

Test statistic list

Event statistic list


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GENEX Probe

GENEX Assistant

System Components







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Example 1. Inter-system handover test

Example 2. WCDMA inter-frequency handover test

Example 3. Multi-frequency Scanning


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Inter-system handover test

Log file:

Event observation——Location of handover point


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Messages and measurement from different networks

Inter-system handover

Time of Handover signaling


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The signal frequency in active set is 2137.40 when the test starts

WCDMA inter-frequency handover

Log file:

Signaling window


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Signaling observation before

handover

WCDMA inter-frequency handover process


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Observe it again, and the frequency handover to 2132.40

WCDMA inter-frequency handover process


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1. Set multi-frequency

Simultaneous scanning of multi-frequency

2. Scanned multi-frequency

3. Select specified frequency to observe it


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Simultaneous observation of different frequencies

Simultaneous scanning of multi-frequency


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GENEX Probe

GENEX Assistant

System Components







HUAWEI

Support different types of test data

Genex Probe

Agilent E7476A

Agilent E6474A

Anritsu Scanner

DTI Scanner

Huawei RNC


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Support 4 types of binning modesSupport 3 types of data sampling modesSupport discrete algorithmImported data are saved in the data set, and the user can reload the data set anytimeUser can load and delete data information to and from the same data set easily


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Support simultaneous analysis of

WCDMA and GSM data

Rich parameters and events

Flexible and convenient operations


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Display on map

Display on Chart

Support several data display modes

Support data export in all display modes, including figures of BMP/JPG/GIF/PNG format, and documents of txt and Excel formats

Each display mode integrates common operations

Displayed in table

Display signaling


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Layer offset

Histogram

Support realtime lines of Cells on the map; support such functions as layer offset, filtering of overlapped paths, regional memory, and automatic matching of site color

The time sequence diagram and histogram of specified parameters can be displayed in the chart; support such functions as dynamic modification and drag of data curve, zoom and rotation of graphics, and customizing chart type.

Data sheet supports such functions as searching, copying and calculating, and display of statistical information of specified parameters.


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Support multi-window Co-Activation, including messages,

events, maps and charts


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Provides many practical reports of UE and scanner data


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Filter data by specific parameter

Delete loaded files from data set

Before filtering

After filtering


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显示信令

Complete layer-3 signaling decoding

Support layer-3 RRC, NAS, and GSM RR signaling decoding;

Support finding function of signaling content


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Support combination of multi-UE and

multi-scanner data

Support RNC data

Associate analysis of UE and RNC

signaling to implement synchronous

analysis of uplink and downlink data

Load RNC data

Synchronization of uplink and downlink data


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Simulate Scanner events, and support settings of

Cell Independent Offset (CIO) parameters

Set thresholds for Scanner event simulation


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Support customized modification of legend of all parameters and events

Parameter legend modification

Event legend modification


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GENEX Probe

GENEX Assistant

System Components







HUAWEI


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There is a call drop event on this

mapPlease pay attention to the Ec/Io and RSCP around this call drop icon.We will find that receive signals in red box are very poor, especially before the call drop. So we need to observe Ec/Io and RSCP on chart in more detail.


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On these charts, we will find that Ec/Io and RSCP in Active Set and Monitored Set became worse and worse.

UE has send “Measurement Report” many times, but there was no right cell to provide valid coverage.

Finally, Call-dropped.


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Analysis

The distance from call drop point to SC212(nearest working cell in Active Set) is 2078m, and the azimuth of SC212 is reverse to call drop area. There is a much nearer cell-SC190, but it seems not to work. SolutionsCheck the site in red box, and turn on itAdjust project parameters of cells nearbySet up a new site


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Pay attention to the call drop in red box, and compare

Active Set/Monitored Set information before call drop

with these after call drop.


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Observe the Active Set/Monitored Set before call

dropBefore call drop, Ec/Io of SCs in both Active Set and Monitored Set are very poor, UE should handover to a better cell.


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After call drop, UE initializes Active Set, and find a good Cell-SC325. If UE handover to SC325, call drop should not happen.

So this call drop dues to Missing Neighbor.

Solution ： Add SC325 to the Neighbor list of SC 442.

Observe the Active Set/Monitored Set after call

drop


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Pay attention to the call drop on the map, we will find that Ec/Io of SC329 in Active Set is very poor (maybe the azimuth reason), and Ec/Io of SC328 in Monitored Set is much better. Usually, a SHO is necessary.


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Before call drop, Ec/Io of SC238(in Monitored Set) is much better than SC239(in Active Set), and this status keeps for long time, and match the thresholds of SHO.So we should get more information with the help of message browser.

Compare the best Ec/Io in Active Set with Monitored Set


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In message browser, we will find that UE has sent “Measurement Report” many times and asked for handover (to SC328 and so on).But there was no response replied from network side. So the call drop happened.Troubleshooting: It is possible that there are some mistakes of parameters configuration of network side. User should contact with vendor’s engineers.


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Pay attention to this call drop, we will find that there are over 3 strong pilots in both Active Set and Monitored Set before call drop. It matches the threshold of Pilot Pollution.So we think this call drop dues to Pilot Pollution.


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ObservationThere are too many sites around the call drop point, and because of neighbor list, UE can also receive farside cell SC165’s signal at this point. Solution

Adjust the azimuth of antennas nearby

Adjust the antenna’s down tilt of farside sites


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Each time enter or leave the tunnel, the signal become worse

sharply.Enter tunnel: At the entrance, the best Ec/Io of Active Set sharply drop to -20db, and the signal in tunnel is very strong, if UE can’t handover to the cells in tunnel in time, a call drop should happen.

Leave tunnel: Similar with above

in out


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Analysis with messagesUE has reported the Event 1a, but before the handover completed, the call dropped. So this call drop dues to SHO too late or not in time.Call drop which happens when open and close door in elevator is similar with this.

1. Adjust the SHO parameters, make SHO more quickly and easily.

2. Change the SHO area by adjusting the RF parameters.

Solution


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owj200301 introduction to genex probe and assistant

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