W RNO Single Site Verification Guide

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WCDMA RNO Single Site Verification Guide For internal use only

Document code Product name

Target readers Product version

Edited by WCDMA RNPDocumentversion 3.0

WCDMA RNO Single Site

Verification Guide

(For internal use only)

Drafted by: Wang Xiangxiong Date: 2006-01-16

Reviewed by:

Xie Zhibin, Xu Dengyu,Hua Yunlong, Chen Jing,Wang Hanhua, Yan Lin,and Ai Hua

Date: 2006-02-17

Reviewed by: Wang Chungui Date:

Approved by: Date:

Huawei Technologies Co., Ltd.

All Rights Reserved

2006-03-13 Huawei Confidential. No Spread WithoutPermission.

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Revision Records

DateRevised

version

Description Author

2004-10-19 1.00 Initial transmittal. Zhou Xinjie

2004-12-20 1.01 Revision according to reviewers. Zhou Xinjie

2006-02-17 3.00

Add the divided work for on-siteengineers and radio networkoptimization engineers, regional siteverification, and HSDPA function test.Redesign the whole document andenhance operability.

The SMS service verification involves

intelligent network, so it is excludedhere.

Whether handover involves function orperformance is difficult to decide, so it isexcluded here.

HSDPA throughput involvesperformance, so it is excluded here.

The reselection between 3G and 2G andtest of voice services handover between3G and 2G involves working efficiency,and it is difficult to divide them as a

function or performance problem.Therefore they are excluded here.

In antenna diversity check, resettinguplink service SIRtarget involvesparameters related to RNP and is notrecommended. Therefore this part isremoved.

The RTWP test is unrelated to singlesite function verification, so it isexcluded.

The antenna diversity check is not a

routine task in single site verification,and it is triggered by test specified byoperators.

Wang Xiangxiong


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Table of ContentsChapter 1 Introduction to Single Site Verification......................................................................6

Chapter 2 Basic Processes........................................................................................................... 62.1 Working Process................................................................................................................ 62.2 Work Division..................................................................................................................... 8

2.2.1 Single Site Verification and Test by On-site Engineers............................................82.2.2 Single Site Verification and Test by RNO Engineers................................................8

Chapter 3 Verifications by On-site Engineers.............................................................................83.1 Preparations before Test....................................................................................................8

3.1.1 Site Status Check.................................................................................................... 83.1.2 Configuration Data Collection and Check................................................................93.1.3 Testing Point Selection........................................................................................... 133.1.4 Test UE Setup........................................................................................................ 143.1.5 Other Preparations................................................................................................ 14

3.2 Verification in Idle Mode...................................................................................................14

3.2.1 Frequency Check................................................................................................... 153.2.2 Scramble Check.................................................................................................... 153.2.3 LAC/RAC Check....................................................................................................163.2.4 CPICH_RSCP/CPICH_EcIo (Near Site) Test......................................................... 16

3.3 Verification in Connected Mode........................................................................................173.3.1 Originating and Terminating Connection Test of Voice Service..............................173.3.2 Originating and Terminating Connection Test of VP Service..................................173.3.3 Connection Test of PS Services............................................................................. 17

3.4 Solving Problems............................................................................................................. 18

Chapter 4 Verifications by RNO Engineers............................................................................... 194.1 Preparations before Test..................................................................................................19

4.1.1 Cell Status Confirmation........................................................................................194.1.2 Testing Route Selection ........................................................................................ 194.1.3 Precautions............................................................................................................20

4.2 Coverage DT Check......................................................................................................... 214.2.1 Aim......................................................................................................................... 214.2.2 Method...................................................................................................................214.2.3 Remarks................................................................................................................21

4.3 HSDPA Access Function Test...........................................................................................214.3.1 Aim......................................................................................................................... 214.3.2 Method...................................................................................................................214.3.3 Remarks................................................................................................................23

4.4 Antenna Diversity Check.................................................................................................. 244.4.1 Aim......................................................................................................................... 244.4.2 Method...................................................................................................................244.4.3 Remarks................................................................................................................27

4.5 Solving Problems............................................................................................................. 28

Chapter 5 Conclusion of Single Site Verification......................................................................28


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List of Figures

Figure 1.1Flow chat of network optimization................................................................................6

Figure 1.2Flow chat of single site verification..............................................................................7

Figure 1.1Method for exporting MML scripts..............................................................................10

Figure 2.1Importing MML scripts in Nastar (1)............................................................................10



Figure 5.2Querying RNC parameter configuration data in Nastar ............................................12

Figure 5.3Querying basic information in Nastar.........................................................................13

Figure 1.1Method for starting testing mode of Huawei U626 test UE.......................................14

Figure 1.1Schematic drawing of route for verifying and testing area.......................................20

Figure 3.1Method for setting PS DialUP continuous call of PS services in Probe.............. ....22

Figure 1.1Selecting data to be recorded in HSDPA test.............................................................23

Figure 1.2Selecting data to be recorded in Layer1 and Layer2 pane........................................23

Figure 1.1Window of WCDMA HSDPA Link Statistics in Probe.................................................24

Figure 3.1RTWP without subscribers in antenna diversity check.............................................25

Figure 4.1RTWP measurement result of correct antenna diversity receiver............................26

Figure 4.2RTWP measurement result of incorrect antenna diversity receiver.........................26

Figure 1.1Test by exchanging antenna feeders..........................................................................27

Figure 1.2Schematic drawing for checking receiver diversity...................................................27


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WCDMA RNO Single Site Verification Guide

Key words: WCDMA, HSDPA, network optimization, single site verification, and regional

verification

Abstract: This document describes the tasks to be completed in single site verification stage,

including work division of on-site engineers and radio network optimization (RNO)

engineers, complete test process for verifying single site, test preparations, the goals,

methods, and instructions for each measurement indexes.

Acronyms and abbreviations


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Acronyms Full Spelling

RSCP Received Signal Code Power

RTWP Received Total Wideband Power

VP Video Phone

HSDPA High Speed Downlink Packet Access


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Chapter 1 Introduction to Single Site Verification

In WCDMA RNO, completing automatic check and test of functions of equipment in eachsite is necessary and ensures that the basic functions (such as access and call) of eachcell and site in the area to be optimized are normal. By single site verification, you canachieve the following goals:

To distinguish the call drop and access problems due to poor coverage from thosedue to equipment performance.This helps locate and solve problems in later stages, and raise efficiency of networkoptimization.

To familiarize the site location and configuration, the ambient radio environment.This helps engineers in the following optimizations.

Single site verification involves the following aspects:

Parameter setting check in idle mode Services call (AMR/VP/PS) function check in connected mode HSDPA function check CPICH RSCP&Ec/Io Installing problems check (whether the feeder is reversely connected)

This document includes the following content:

Chapter 1 introduces the goals and content of single site verification. Chapter 2 provides the basis processes and work division of single site verification. Chapter 3 describes the methods for single site verification in each stage with

Nastar4.0 and Huawei U626 test UE. describes the tasks and methods for single site verification of RNO engineers

based on Probe1.3. Chapter 5 concludes the whole document.

Chapter 2 Basic Processes

2.1 Working Process

Figure 1.1 shows the flow of network optimization. According to the figure, after sites areconstructed and tested, the network optimization proceeds to the single site verification

stage. Single site verification includes automatic test of equipment functions for cells andin this stage you check whether the equipment of each cell functions normally.

When all the cells in the area to be optimized pass single site verification without functionproblem, the single site verification ends. Consequently, optimization proceeds to RFoptimization stage.

Figure 1.1 Flow chat of network optimization


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Figure 1.2 Flow chat of single site verification

Single site verification includes preparations before test, single site test, and solvingproblems.

In the stage of preparations before test, you must input the Radio Parameter PlanningData Table output in radio network planning (RNP). After check configured data, outputthe Radio Parameter Configuration Data Table and select proper test points and testroute.

In the stage of single site test, output the Single Site Verification Checklistaccording tothe template.

In the stage of solving problems, on-site engineers and product support engineers solve

the function problems.


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Preparations beforetest

Checking

site statusCheckingconfigureddata

Others

Radio

parameter

planning data

table

Radio

parameter

configuration

data table

Single site test

Frequencycheck

Scramble

checkLAC/RACcheck

CPICHRSCP&Ec/Io check bysite

Service callfunctioncheck(voice/VP/PS)

CoverageDT check

HSDPAfunctioncheck

Antennadiversitycheck(optional)

Single siteverificationchecklist

Solving the problem


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2.2 Work Division

The project dimensioning, staff, site distribution, and work division vary. The single siteverification is completed by both on-site engineers and RNP engineers. Thereforeengineers of different types complete different tasks.

2.2.1 Single Site Verification and Test by On-site Engineers

The on-site engineers must complete the following tasks.

1) Prepare as described in 3.1, "Preparation before test".2) Before the NodeB is enabled, check by test UEs that the basic functions of each cell

are normal.The indexes to be checked includes cell status and service connection in the idlemode and connected mode as below: Idle mode

Frequency checkScramble checkCoverage check: CPICH_RSCP (within 100 meters from site) > 75 dBm.CPICH_EcIo (within 100 meters from site) > 8 dBm.

Connected modeOriginating and terminating connection conditions of voice serviceOriginating and terminating connection conditions of VP servicesPS service connection conditions

3) Output Single Site Verification Checklistof each site

2.2.2 Single Site Verification and Test by RNO Engineers

The RNO engineers complete the following tests of single site verification:

Coverage DT Check HSDPA Access Function Test Antenna Diversity Check (if specified by operators in verification)

Chapter 3 Verifications by On-site Engineers

On-site engineers verifies single sites by test UEs and check the cell status and serviceconnection conditions in the Verification in Idle Mode and Verification in ConnectedMode. The following sections take Huawei U626 handset as example for completing

single site verification. For handsets of other types, the method for starting testing modeand measurement interface is different, but the following sections can still serve asreference for configuring testing parameters.

3.1 Preparations before Test

3.1.1 Site Status Check

Before site test, list all the cells of one or more NodeBs in the areas to be measured andensure that the status of the cells to be measured is normal.

For each cell to be measured, check by LMT or M2000 the following indexes:


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Figure 1.1 Method for exporting MML scripts

The method for generating RNC configuration data is below:

Generate the configuration data table by using MML script files and Nastar software, withthe method below:

1) Run Nastar.2) Select System > Import RNC Data, as shown in Figure 2.1.

Figure 2.1 Importing MML scripts in Nastar (1)

3) Select Data Type Setting and then select Config Data, as shown in Figure 3.1.


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4) Click Browse to set the directory where MML script files are saved.5) Click OK to import MML script files, as shown in Figure 5.1.


The method for querying RNC parameter configuration data by Nastar is below:

After importing MML scripts, you can see the NE information in WCDMA Network


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Element. Right-click RNC and a menu for querying RNC configuration parameters aredisplayed, including the following parameters:

RNC Algorithm Switch Resource Control

Access Handoff Load Control Power Control NodeB lub Congestion Control

You can query parameter configuration by selecting related submenu.

Figure 5.2 Querying RNC parameter configuration data in Nastar

The method for querying cell parameter configuration data in Nastar is below:

In the Figure 5.2, click + before RNC, and then the cell information is displayed. Rightclick on the target cell and you can see the following information:

Cell Basic Info Coverage-related parameters Access-related parameters Handoff-related parameters RRC-related parameters Power control-related parameters

You can see the content by selecting different submenus.


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Figure 5.3 Querying basic information in Nastar

On-site engineers must key on checking the inconsistencies between configured dataand planned data, including the following indexes:

NODEBNAME LOCELL ID MAXTXPOWER LAC RAC Scramble PSCRAMBCODE Frequency UARFCNDOWNLINK

3.1.3 Testing Point Selection

I. Aim to Select Testing Points

To ensure that the services to be tested are provided by the cell to be measured, youmust test cell equipment functions by selecting a test point meeting the followingconditions:

Where the signals of target cell are strong Where the signals of other cells are weak

II. Methods for Selecting Testing Points

To ensure that the services to be tested are provided by the cell to be measured, themost ideal method is to disable power amplifiers of other cells except the cell to bemeasured. In this situation, no requirements are on the testing points.

If you cannot disable the power amplifier of other cells, select a testing point near thecenter of the cell, with line-of-sight distance to the NodeB. In this way, the signals arestrong enough and do not fluctuate. For a macro cell, select a testing point 100 metersfrom NodeB in the direction of major transmission of cell antenna, with line-of-sightdistance to NodeB.


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3.1.4 Test UE Setup

Set the handset to testing mode before test. For different types of handset, the methodfor starting testing mode is different. For Huawei U626, press the keys * and #, as well as

left navigation key in the same time to start engineering mode, and this serves for lockingfrequency. Press the application key to starting testing mode, as shown in Figure 1.1.

Figure 1.1 Method for starting testing mode of Huawei U626 test UE

3.1.5 Other Preparations

Besides the tasks mentioned previously, you must complete the following tasks:

Check from the operator's optimization engineers whether the power transmission ofeach site is allowed

Obtain the number of test UE Check whether the UE is a test UE in engineering mode or uses a data card and

whether the UE power is enough Print the test table Familiarize the following information about NodeB before test, including:

Site location

Cell ID

Scramble

Omnidirectional/Directional site

Azimuth

3.2 Verification in Idle Mode

Verification in idle mode includes the following aspects:

Frequency Check Scramble Check LAC/RAC Check CPICH_RSCP/CPICH_EcIo (Near Site) Test


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Application key


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3.2.1 Frequency Check

I. Aim

Check whether the frequency number of the cell to be measured is consistent with theplanned data.

II. Method

According to the method mentioned in 3.1.3, press the application key to start testingmode of the handset. Then the handset displays testing mode.

Query WCDMA-Network Information, and the handset displays the basic informationof the serving network, including the uplink and downlink frequency number.

III. Remarks

Check whether the ID of the serving cell (CI) is consistent with the planned one infrequency check. If not, the UE might receive signals from other cells.

1) If the ID of the serving cell is consistent with the planned one, you do as below:Move the UE to a location with stronger signals and wait for two minutes. If themeasured CI is inconsistent with the planned one, the UE does not reselect a cell.You must power off the UE, and then power on the UE to ensure that the UE campson the cell with strongest signals, namely, the primary serving cell. Only when boththe frequency and CI are consistent can the test pass.

2) If the ID of the serving cell is inconsistent with the planned one, you do as below:You must lock frequency. For Huawei U626 handset, press the keys * and #, as wellas the left navigation key at the same time to start engineering mode. PressLocking Frequency, and then Start Locking Frequency. After typing the

frequency point, click OK to complete locking frequency. After frequency locking,you must restart testing mode. If the frequency and CI are consistent, the single siteverification test passes.

If you cannot find the serving CI for a long time, possibly the signals of the primaryserving cell are transmitted abnormally, and the antenna-feeder are reversely connected.You must adjust them and then restart the test.

3.2.2 Scramble Check

I. Aim

Check whether the scramble configuration is consistent with the planned configuration.

II. Method

Press the application key to start testing mode of the handset.

Query WCDMA-Network Information, and the handset displays the basic informationof the serving network, including the primary scramble (P-SC) information.

III. Remarks

Based on consistency of CI, check whether the P-SC is consistent with the planned one.If yes, the site passes the test. If no, you must readjust and retest.


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3.2.3 LAC/RAC Check

I. Aim

Check whether the LAC/RAC of the cell to be measured is consistent with the planedone.

II. Method

Press the application key to start testing mode of the handset.

Query WCDMA-Network Information, and the handset displays the basic information

of the serving network, including LAC and RAC.

III. Remarks

If the measured LAC/RAC is consistent with the planned one, the site passes test. If not,you must readjust and retest.

3.2.4 CPICH_RSCP/CPICH_EcIo (Near Site) Test

I. Aim

Check whether the CPICH RSCP and CPICH Ec/Io received by UE are greater than thethreshold. Check whether there are problems, such as abnormal power amplifier,abnormal connection of antenna-feeder, inconsistent of antenna tilt/azimuth from theplanned one, and blocking by buildings.

II. Method

In the major transmission direction of antenna, fix a location with line-of-sight distancefrom the antenna within 100 meters from the NodeB.

Power on the test UE and start testing mode by pressing the application key.

Query WCDMA-Power/RRC, and the handset displays the information about thereceived signals, including the received signal strength Rx (CPICH_RSCP) and thereceived signal-to-interference radio (SIR) (CPICH Ec/Io).

III. Remarks

The threshold of CPICH RSCP and CPICH Ec/Io are related to site types (macro cell,micro cell) and loading conditions. You must determine them according to the actualsituations.

For macro cells, CPICH RSCP > 70 dBm. For micro cells, CPICH RSCP > 60 dBm. For no-load cells, CPICH Ec/Io > 6 dB. For load-on cells, CPICH Ec/Io > 10 dB.

If the operator also runs a 2G network and the 3G sites and 2G sites share sites, you cancompare the coverage of corresponding 2G sites for checking signal coverage problems.

If no special note is for a cell, the related CPICHH RSCP > 75 dBm, CPICH Ec/Io > 8 dB.

If CPICH RSCP < 75dBm, you must check for the following problems:


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Abnormal power amplifier Abnormal connection of antenna-feeder Inconsistency of antenna tile/direction angle from planned one Blocking by buildings

If CPICH Ec/Io < 8dB (when loading, the CPICH Ec/Io < 10dB), you must inform ofRNO engineers.

3.3 Verification in Connected Mode

3.3.1 Originating and Terminating Connection Test of Voice Service

I. Aim

Check whether the originating and terminating function of voice service function normally

by call quality test (CQT).

II. Method

Use two handsets to call each other for five times. Record the originating and terminatingconnection conditions,

III. Remarks

If the originating or terminating handset fails, you must locate to solve the problem andretest it.

3.3.2 Originating and Terminating Connection Test of VP Service

I. Aim

Check whether the originating and terminating function of VP service function normallyby call quality test (CQT).

II. Method

Use two handsets to call each other for five times. Record the originating and terminatingconnection conditions,

III. Remarks

If the originating or terminating handset fails, you must locate to solve the problem andretest it.

3.3.3 Connection Test of PS Services

I. Aim

Check whether the originating function of PS services are normal by handset onlineservice.


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II. Method

Before test, check whether you can go online with the test UE in normal cells. If thehandset is available for online service, type the website address in the browser. It is a

symbol for connection of PS services that the handset is available for online services andbrowsing web pages.

The method for Huawei U626 handset to browse online is below:

1) Select Main Menu > Data Connection > Data Account. Check the IP address ofdata account. Ensure than the access point name (APN) is correctly configured. Forexample, the ANP for Chine Mobile Monternet is cmwap.

2) Select Main Menu > Browser> Selecting Network Settings. Select the networksettings, press Edit and the handset displays the editing interface. You can editingthe following items: Homepage: type the website address entitled "http://" WAP gateway: if there is a WAP gateway, type the IP address, IP port number,

user name, and password. If not, neglect it

Timeout: the default out time is 60s Data account: select as described in 1 Connection type: select HTTP

3) Select Main Menu > Browser> Homepage. Select OK to browse the homepage. Ifno homepage address is in Network Settings, or you aim to browse other webpages, select Main Menu > Browser> Typing Website Address. After typing awebsite address, select OK. Then you can browse the specified web page.

The method for Moto A835 handset to browse online is below:

1) Edit online settings.Select Menu > Tools > Web Access > Web Sessions. Move the cursor to the

target web session, press , and a menu is displayed. Select Edit to edit onlinesettings as below:

Homepage: type homepage address excluding "http://" Service Type1: HTTP Service Type2: WAP Port1: 8080 GPRS APN: for example, the APN for China Mobile Monternet is cmwap.

2) Select Menu > Tools > Web Access > Web Sessions. Select Launch to browsethe specified web page.

III. Remarks

If you can browse the specified web page with the UE in the cell to be measured, the sitepasses the test. If not, the PS services are unavailable and you must location to retest.

3.4 Solving Problems

If on-site engineers find product function problems or parameter configuration problems,the engineers must location them and retest until the problems are solved and processterminates.


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Chapter 4 Verifications by RNO Engineers

After on-site engineers complete the basis verifications of equipment functions, the RNOengineers do the following tasks:

Coverage DT Check HSDPA Access Function Test Antenna Diversity Check (if specified by customers)

RNO engineers can verify areas by cluster according to new site distribution.

4.1 Preparations before Test

4.1.1 Cell Status Confirmation

Before checking site, you need to inquiry product support engineers whether alarmsexist, whether problems are solved, and whether the cell is in normal status. You mustpay attention to intermittent alarms (such as, transmission alarms automatically reset, butthis causes network to become unstable and affects services)

4.1.2 Testing Route Selection

Before test, you must select a proper testing route according to site distribution and localenvironment, with principles as below:

The testing route needs to cover the coverage are of primary serving cell to bemeasured as possible, as well as all major street around the NodeB to bemeasured.

The testing route involves consideration of local driving habit and avoids waiting fortraffic lights during testing.

Figure 1.1 shows the schematic drawing of route for verifying and testing area.


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Figure 1.1 Schematic drawing of route for verifying and testing area

4.1.3 Precautions

Testing cell coverage and HSDPA access function in area verification requires a quickschedule. If the method is improper, the test of an index might terminate due to one ortwo abnormal cells. For a proper schedule, you must read the details of test, know the

content, and avoid wasting time due to abnormalities.

You must pay attention to the following aspects:

Connect HSDPA terminal and scanner by a laptop and ensure normal work oftesting equipment and testing software.

Control the HSDPA terminal to call PS services continuously with testing softwareand check whether the HSDPA access of the cells to be tested functions normally.

Control the scanner to measure RSCP and Ec/Io of CPICH with testing softwareand check the downlink coverage of the cells to be tested.

In test, the car moves at a speed of about 30 kilometers/hour. It slows down or stopsby street or road when passing the primary serving cell to be measured or in thefollowing situations:

Abnormal HSDPA access function

Abnormal testing equipment Poor CPICH RSCP of a cellIn case of the previous situations, record the abnormalities and continuous the test.When the test is complete, verify the abnormal cells and solve problems.

You must check for the following problems:

Abnormal power amplifier

Abnormal connection of antenna-feeder

Inconsistency of antenna tile/direction angle from planned one

Blocking by buildings


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You must ensure that the downlink rate for defining a subscriber by USIM is greater thanthe HSDPA threshold of downlink BE service.

II. Automatic and Continuous Call

Control the testing software to call PS services automatically and continuously by PSDialUP in Probe. The details are as below:

1) Select Configuration > System Config > Test Plan.2) Select UE in the Device dropdown list.3) Click TestItem, as shown in Figure 3.1.

Figure 3.1 Method for setting PS DialUP continuous call of PS services in Probe

4) Select PS DialUP and set parameters as below: (PS DialUp) Enable = true PDP type = ppp PDP APN (China Mobile Monternet) = cmwap

Traffic Class = Background NeedHandUp = true

Reserve Time = 30s (recommended) Test Time = 999 (recommended) Interval Time = 5s (recommended)

III. Setting Items in Layer1 and Layer2

Check the hardware configuration and port in Probe. Add the items to be measured inLayer1 and Layer2 related to HSDPA in Log Mark. Otherwise, the system does notrecord them and the data related to HSDPA is not displayed in the three windows ofHSDPA. You can configure it as shown in Figure 1.1 and Figure 1.2.


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Figure 1.1 Selecting data to be recorded in HSDPA test

You can select indexes as shown in Figure 1.2.

Figure 1.2 Selecting data to be recorded in Layer1 and Layer2 pane

In Probe, click Start Test, the software starts test and recording the results to testingfiles. The system automatically connects to HSDPA service. Download large files with thefollowing professional downloading software to ensure continuity of data transmission:

Flashget Net Transport NetAnt

4.3.3 Remarks

To test HSDPA functions, you must use the testing software supporting HSDPA (such as


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Probe 1.3).

The HSDPA threshold of downlink BE service is defined as the rate judgment thresholdof background/interactive services loaded on HS-DSCH in PS domain. If the maximumdownlink rate of background/interactive services in PS domain is greater than the HSDPA

threshold, the HS-DSCH is used for loading. Otherwise, DCH is used for loading. Youcan query the threshold by executing LST FRC on RNC LMT.

By information updating of testing window related to HSDPA in testing software, you canjudge whether the service maps on HS-DSCH. If it is an R99 service, the HSDPA-relatedwindow does not display data or the data is not updated. For example, in the window ofWCDMA HSDPA Link Statistics, you can see the testing information as shown in Figure1.1.

Figure 1.1 Window of WCDMA HSDPA Link Statistics in Probe

4.4 Antenna Diversity Check

Check antenna diversity as required by operators accordingly.

4.4.1 Aim

Check whether the antenna for receiving diversity signals is reversely connected.

4.4.2 Method

The following paragraphs describe methods for checking antenna receiving diversity.

I. Fixed Maximum Transmit Power of UE

In the cell to be measured, if the UE transmits signals at the fixed maximum power (someUE supports transmitting signals at a fixed power, such as Huawei U626), the RTWP of


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the cell to be measured and the neighbor cells increases. When the UE connects to thenetwork in the direction of major lobe in the cell to be measured,

If the diversity receiver antenna is correctly connected, the RTWP of thecorresponding cell increases only and the RTWP of neighbor sectors changes less.

If the diversity receiver antenna is improperly connected, the RTWP of other sectorsalso increases.

In this way, you can judge whether the diversity of the receiver antenna is problematic.

The following paragraphs are based on Huawei U626 test UE and describe the steps forchecking antenna diversity by the method Maximum Transmit Power of UE.

1) Use two U626 handsets to dial each other for VP service.2) In a cell of the target NodeB, press the keys * and #, as well as the left navigation

key to start engineering mode. Select Transmitting at the Maximum Power in

the Specified Frequency, type the frequency number to complete settingTransmitting at the Fixed Maximum Power.

3) Start measuring RTWP of each cell of the target NodeB on RNC LMT.Figure 3.1 shows the RTWP without subscribers in antenna diversity check.

Figure 3.1 RTWP without subscribers in antenna diversity check

4) Move the UE around the NodeB and stop in the direction of major lobe of the threesectors.

Check the measured RTWP on RNC LMT. Check whether the RTWP of thecorresponding sector increases sharply compared with that of other sectors. If yes,the antenna diversity receiver is correct. If no, the antenna diversity receiver mightbe incorrect and need checking and locating for problems. Assume the UE campson cell 10111 (Cell ID = 10111), the RTWP measurement result of correct antennadiversity receiver is as shown in Figure 4.1.


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Figure 4.1 RTWP measurement result of correct antenna diversity receiver

By comparison ofFigure 3.1 and Figure 4.1, if the antenna diversity receiver is correctand the UE camps on cell 10111, the RTWP of cell 10111 changes apparently while thatof rest two cells changes a little.

Assume the UE camps on cell 10111. Figure 4.2 shows the measurement result ofincorrect antenna diversity receiver.

Figure 4.2 RTWP measurement result of incorrect antenna diversity receiver

By comparison of Figure 4.2 and Figure 3.1, when the antenna diversity receiver is

incorrect, the RTWP of both the cell 10111 and 10112 (neighbor) changes apparently.This indicates that the receiver diversity antenna is reversely connected.


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II. Checking Antennas by Exchanging Feeders

Connect the Tx/Rx feeder to the Rx ports and the Rx feeder to the Tx/Rx port. In Figure1.1, part A shows the original connection and part B shows the antenna after exchanging

feeders. Compare the CPICH RSCP before and after exchanging feeders. If they are thesame, the problem is not about reverse connection of antenna feeders (normally afterexchanging feeders the difference of CPICH RSCP before and after exchanging feedersis less than 2 dB).

Figure 1.1 Test by exchanging antenna feeders

When you check antenna diversity receiver by exchanging feeder antennas, the antennaconnection is as shown in Figure 1.2.

Figure 1.2 Schematic drawing for checking receiver diversity

4.4.3 Remarks

The method for UE to transmit signals at the fixed maximum power is a recommendedmethod of test and operation, but it is restricted from whether the UE supports related

functions. To exchange antenna feeders, you must repeatedly adjust the antenna-feedersystem. Adjustment requires abundant labor and is difficult to implement, so engineers


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must cooperate well with each other in test.

4.5 Solving Problems

If RNO engineers find problems about product function, such as originating or terminatingfailure, call drop, quality of talk, they must retest to check whether the problem occursagain. In addition, RNO engineers must ask product support engineers to solve problemsand tracing the solving of problems until problems are solved and closed.

If the problems are about engineering installation, ask on-site engineers to solve them.Meanwhile RNO engineers must trace them until they are solved and closed.

Chapter 5 Conclusion of Single Site Verification

In single site verification stage, engineers check whether equipment functions normally.Single site verification is a basis for the following RF optimization and serviceoptimization. On-site engineers must cooperate well with RNO engineers to ensurequality of projects.

On-site engineers complete the verification by test UE in idle mode and connected mode.The content of verification includes:

Frequency check Scramble check LAC/RAC check CPICH RSCP check and CPICH Ec/Io check near NodeB Connection check of AMR/VP/PS services in connected mode

RNO engineers complete the verification based on distribution of new site. The content ofverification includes:

DT test HSDPA access functions test Antenna diversity check (if specified by customers)

If all verifications about function are accepted, the single site verification is completed. Ifany problem about product function is found, engineers must locate it and retest. Aftersingle site verification, optimization comes to RF optimization.

Compared with WCDMA RNO Single Site Verification Guidance, this version has thefollowing content changed:

Add the divided work for on-site engineers and RNO engineers, regional site verification,and HSDPA function test.

Redesign the whole document and enhance operateability. On-site engineers and RNOengineers can complete all single site verification tasks according to this document.

The SMS service verification involves intelligent network, so it is excluded here. It is alsoremoved from Single Site Verification Checklist Template.

Whether handover involves function or performance is difficult to decide, so it is excludedhere. It is also removed from this document.

HSDPA throughput involves performance, so it is excluded here. This document requiresyou to verify HSDPA access function.

The reselection between 3G and 2G and test of voice services handover between 3Gand 2G involves working efficiency, and it is difficult to divide them as a function or


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performance problem. Therefore they are excluded here. It is recommended thatengineers verify single sites by special optimization in system function verification stageor parameters optimization stage. In this new version, this part is removed.

In antenna diversity check, resetting uplink service SIRtarget involves parameters related

to RNP and is not recommended. Therefore this part is removed.

The RTWP test is unrelated to single site function verification, so it is excluded.

The antenna diversity check is not a routine task in single site verification, and it istriggered by test specified by operators.

The requirements on division of responsibilities for single site verification are just raised.This document is a conclusion of engineers' opinions and the operateability of the book isnot tested, so it must be tested in on-site engineers.

The precondition for this document is as below:

Based on Nastar 4.0 and Huawei U626, on-site engineers describe the working methods

in each stage. Based on Probe 1.3, RNO engineers describe the testing methods forsingle site verification.

This precondition restricts the document by applicable range. Common users can verifymost common single sites according to this document. Inexperienced engineers must beguided by experienced ones if the on-site testing tools change.


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Reference

[1] Xie Zhibin WCDMA RNO Radio Network Optimization Operation Guide. Dec 2003.

Documents

W RNO Single Site Verification Guide