Huawei Technologies Co

WCDMA RNO Single Site Verification GuidelineFor internal use only

Huawei Technologies Co. Ltd.Product versionConfidentiality level

For internal use only

Product name: WCDMA RNPTotal 18 pages

WCDMA RNO Single Site Verification GuidelineFor internal use only

Prepared by:WCDMA RNPDate:January 10, 2004

Reviewed by:Date:mm-dd-yyyy

Reviewed by:Date:mm-dd-yyyy

Approved by:Date:mm-dd-yyyy

Huawei Technologies Co., Ltd.

All rights reserved

Revision recordDateRevision versionDescriptionAuthor

Jan 10, 20041.00Initial transmittalZhou Xinjie

Feb 06, 20041.01Modify based the feedback mindsZhou Xinjie

Mar 08, 20041.02Modify based on the UAE ABU single site function verification process: Adjust the document framework; Give a particular description of single site function verification operate steps and add part of test items; Update single site function test data checklistZhou Xinjie

Contents

71Overview

2Preparation72.1Alarm Check72.2Cell Status Check72.3Radio Part Parameters Configuration Check73Single Site Verification73.1Test Preparation83.2Test Process93.3Troubleshooting133.4Notice items143.4.1Site choose143.4.2Test Point Choose143.4.3Test Route Choose143.4.4Diversity Receiver (DRX) check method153.5Delivery of the Test Results164Appendixes174.1Data Record Table of the Single Site Function Verification (template)17

Table of Figures8figure 1Radio Network Optimization Flow

figure 2Test points and test line13

WCDMA RNO Single Site Verification GuidelineKey words: WCDMA, single site, verificationAbstract: This article gives a description on the single site verification that will be done in the process of the WCDMA network optimization, which includes the test purpose, test methods, test process, input and output and others. It also presents the checklist of the site function verification. List of abbreviations: Abbreviations

Full spelling

RANRadio Access Network

RNCRadio Network Controller

RNPRadio Network Planning

WCDMAWideband Code Division Multiple Access

1 OverviewThe single site verification test is a part of the WCDMA network optimization to ensure that the basic functions of the cell are normal, such as call access, call quality, handover and so on. Through the single site function verification, the following functions for each cell shall be checked as normal:

Verify coverage ( CPICH RSCP & Ec/Io )

Verify scrambling code

Verify no installation faults (e.g. crossed feeders) Make service call test

2 PreparationBefore the time-consuming single site verification, we should only ensure the following conditions have been met. 2.1 Alarm CheckUsually, the product support engineer will be responsible for checking and resolving all the alarms. It is important for the optimization engineer prior to any field test to check with product support engineer regarding any alarms especially intermittent alarms.2.2 Cell Status Check Usually, the product support engineer will be responsible for checking and resolving all the cell state problems. It is important for the network optimization engineer prior to any field test to confirm with product support engineer regarding cell state.2.3 Radio Part Parameters Configuration Check The optimization engineer need to ensure the radio part parameters configuration list has been achieved. In the list the radio part parameters includes: the scrambling code, power setting, neighbor cell list, handover parameter etc. 3 Single Site VerificationThe single site verification test includes the following items: Coverage check. Through checking the CPICH RSCP and CPICH Ec/Io, the cell coverage status shall be realized, the downlink transmission power and the additional downlink interfere shall be checked. Scrambling code check. Through comparing the scrambling code from site verification test and from planning in a special place, the crossed feeders shall be found out. Uplink RX diversity antenna swap check. Routine test for voice service, VP service, PS service. Check to ensure the service functions at the control plane and the user plane of the CS/PS domain of all cells are normal. Conduct a simple drive test to check if the handover function is normal. For single site verification, the following tools and software shall be needed.

Drive test scanner, used for collection the pilot signal data. The Agilent E6455C is used as the drive test scanner now; Test UE, used for service verification and system message collection. The Qualcomm 6200 mobile is used for voice and PS service test. Since the Qualcomm mobile could not support the VP service, the Motolora A830 mobile or the Siemens U15 mobile is used for the VP service test.

Data collection software, used to display and log the signal strength, UE status, signal message and so on in time. The Agilent E6474A is being used now.

Data analyze software, used to resolve message, analysis signal, solve problem and so on. The Actix Analyzer and DataAssistant is being used now.The single site verification is often carried out on per-NODEB basis. According to the experiences of the CDMA optimization, the verification of one site usually takes about two to four hours [2]. So we could choose part of sites (10% to 15% sites) for testing if the time be limited. 3.1 Test PreparationThe following work should be done in the test preparation stage. Realize the alarm problem and cell current status of verified site from product support engineer. Get the idle terminal number and the PSTN telephone number for the test. Check the drive test tools (UE + Scanner) working normal.

Copy the checklist to paper, the checklist table is shown in appendix.

The whole XXX Project WCDMA RNP Radio Parameter Configuration List is going to being used.

Learn the instance of verified site before the verification, such as cell ID, scrambling code, omni site or directional site, azimuth and down tilt of antenna, antenna height, propagation environment and so on. Determine the test points and test route on the map and make sure that one test point is selected for one sector. The method of determining the test point and test route shall be found in the following chapters.3.2 Test Process

The following work should be done for the test:

1. Arrive the test point of sector 1.2. Power on the Qualcomm mobile, the WCP indication is shown on the mobile screen. Mobile setup process is complete. It means the LA update procedure is OK, the RA update procedure is OK, the PS attach is OK. (If the WC is shown on the mobile, it means the LA update is OK. If the P is shown on the mobile, it means the RA update and the PS attach is OK. )3. Choose Menu -> 5 -> 9 -> 2 on Qualcomm mobile, PS detach is OK.

4. Setup the Agilent E6474A software, start data logging. Observe the Qualcomm mobile logging data from Agilent software: Observe cell frequency and scrambling code from UMTS CPICH View window, shown in figure 1; Observe CPICH RSCP and Ec/Io, shown in figure 2. (Notes: The CPICH RSCP and Ec/Io shall be got from scanner or Qualcomm mobile. The difference between the scanner and Qualcomm mobile is the antenna of scanner is out-car but the antenna of Qualcomm mobile is in-car. Commend to use the Qualcomm mobile to check the CPICH RSCP and CPICH Ec/Io. When we use the Qualcomm mobile to check the CPICH RSCP and CPICH Ec/Io, the Io and Ec/Io shall be obtained, the CPICH RSCP shall be obtained through calculation: Ec = Ec/Io + Io.)

figure 1 Agilent UMTS CPICH View

figure 2 Agilent UMTS Status View5. Make the dialing test of 3G speech service, which include mobile terminating call and mobile originating call. Test the speech communication quality by your feel. 6. Make the dialing test of 3G VP service, which include mobile terminating call and mobile originating call. Test the speech and photo communication quality by your feel.7. Make the dialing test of 3G PS service, which include WWW browsing and file downloading. Test the PS connection quality by your feel.

8. (Optional) Diversity receiver check, the method shall be found in the following chapters.9. Take a speech service or VP service or PS service call and keep it. Verify the soft handover along the test route. During the process, observe the CPICH scrambling code changing from Agilent UMTS CPICH View, and observe the active set update message from UMTS Protocol Messages View.

figure 3 Agilent UMTS CPICH View (Handover)

figure 4 Agilent UMTS Protocol Messages View (Handover)10. Terminate the conversation, stop the log file and close the Agilent E6474A software.

11. Repeat the steps 2 to 10 in the new sector.

12. After all the drive test has been finished, check the system information parameters by background analysis software ANALYZER. The checked parameters are included: the cell selection and reselection parameters in SIB3, LAC/RAC in SIB1, neighbor cells in SIB11. Optional check items: Cell reselection between 2G and 3G, voice handover from 3G to 2G.

3.3 Troubleshooting

As the problem happened, the test should be made again to make sure if they are repeatable. The problem recording list should be filled in and the product support engineer should be encouraged to solve the problems. Track the problems until they are solved. 3.4 Notice items

3.4.1 Site chooseIf the time be limited we could choose part of sites (10% to 15% sites) for testing. The principles for choosing site according to these rules: 1. Choose site which coverage the keystone area; 2. Choose site which has heave traffic; 3. Choose site which coverage a wide area; 4. Choose site according to the operator request. 3.4.2 Test Point Choose

Since the 3G test mobile can not support the frequency locking and scrambling code locking function now, and we want to ensure that the test service is just happened in the verified cell, we shall choose the test point where the target cell signal strength is strong enough and the other cells signal strength is poor. The test points should be chosen near the cell centers and best with line-of-sight to the base station. In this way we can ensure the signal coverage is good enough and without signal strength undulate. The test points should not be chosen under the site. For the signal strength of other sectors of same site is strong too. If the pilot test has been finished, we are able to choose the test points according to the signal strength distribution of each cell which has been got from the pilot drive test. Otherwise we shall choose the test point through the scanner in the single site verification.3.4.3 Test Route Choose

The driving test route should connect the test points of the sectors. It is required that signals not be shelter from buildings along the test route to avoid turning the test into a coverage test. The figure below shows the way to select the test points and the test route.

figure 5 Test points and test route3.4.4 Diversity Receiver (DRX) check methodWhen the DRX is used, the DRX checking used to affirm that the diversity receiver antenna crossed.

figure 6 DRX verification

If the receive antenna crossed, the uplink diversity receive gain is loss, and the uplink interfere is doubled. It will affect the uplink capability. And this problem is hard to be checked out by general downlink pilot test. So in the single site verification test the DRX check shall be needed. The possible test methods for DRX check include:Method 1: Switch the transmitter of verified cell from one antenna to another, check the downlink transmission power changed or not. If no change happened, it means that there is no crossed-DRX problem.

figure 7 Switch Transmitter Antenna

Method 2: Add the CW transmitter on Rx2, set the same Tx power as the cell. Check the cell downlink transmission power and the CW downlink transmission power are same or not. If no change happened, it means that there is no crossed-DRX problem.

3.5 Delivery of the Test Results

Delivery of the test results includes:

The completed cell function test data table; The drive test files (Optional).4 Appendixes

4.1 Data Record Table of the Single Site Function Verification (template)

References:

[1] Xie Zhibin, WCDMA RNO Radio Network Optimization Operation Guide, 2003/12

[2] Motorola, Optimization Steps for Commercial Deployment of a CDMA System, 1996/08

January 18, 2004All rights reserved Page 7 of total 18

_1140951110.xlsSiteCheckList

Site ChecklistReminder

Data Base Update

Mapinfo Update

Site ID:Site Name:

New Site:Site Connected to RNC:

Site Expansion:Site Expanded from:To:

Site Migration:Site Migrated from RNC:To RNC:

Others:

No.Activity/ProcessNewExpansionMigrationOthersRemarks

Idle Mode1Frequency and Scrambling Code correctly defined

2Cell selection and reselection parameters are as planned ( SIB 3 )

3The LAC/RAC is correctly defined ( SIB 1 )

4The neighbor list and parameters are as planned ( SIB 11 )

5LA update proceduce is checked

6Cell reselection from 3G to 2G is checked

7Cell reselection from 2G to 3G is checked

8MO-SMS and MT-SMS

Connection Mode9CPICH_RSCP > -85 dBm near site

10CPICH_EcIo > -8 dB near site

11Mobile terminating calls and mobile originating calls for voice service is checked

12The voice service quality is good by the engineer feeling

13Mobile terminating calls and mobile originating calls for VP service is checked

14The VP service quality is good by the engineer feeling

PS15PS attach is checked

16PS detach is checked

17PS PDP activation and deactivation is checked

18The PS service quality is good by the engineer feeling

19RA update proceduce is checked

Handover20Soft handover for voice service to and from the 3G cells checked OK

21Soft handover for VP service to and from the 3G cells checked OK

22Soft handover for PS service to and from the 3G cells checked OK

23Inter-system handover for voice service to the 2G cells checked OK

Gen24Installed antenna is of the planned type

25Overall performance and coverage area as expected by a brief drive test

26Antenna Swapping Test

Remarks (Further comments):

Checked by:

1-Name/Designation:Signature:Data:

2-Name/Designation:Signature:Data:

Notes: If the item is OK, mark the '' on the ''; If the item is not OK, mark the '' on the ''; If the item is not checked, mark the '' on the ''.