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Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page0
WCDMA RNO Single Site
Verification
Technology Changes.
Communication Lasts.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page1
Course Contents
Chapter 4 Problem example for site verification
Chapter 3 Single site verification
Chapter 2 Single site verification preparation
Chapter 1 Single site verification overview
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page2
Single Site Verification Overview
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page3
Flow chart of single site verification
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page4
Single Site Verification Overview
Purpose: The 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 coverage ,call
access, call quality, parameter setting and so on.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page5
Single Site Verification Overview
Content: 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
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page6
Single Site Verification Overview
Tools:
Drive test scanner, used for collecting the pilot signal data.
DTI;
Test UE, used for service verification and system
message collection. Huawei 626;
Data collection software, used to display and log the
signal strength, UE status, signal message and so on in
time. Genex Probe;
Data analysis software, used to resolve message, analysis
signal, solve problem and so on. Genex Assistant .
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page7
Chapter 4 Problem example for site verification
Chapter 3 Single site verification
Chapter 2 Single site verification preparation
Chapter 1 Single site verification overview
Course Contents
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page8
Single Site Verification Preparation
Before the single site verification, we should only ensure the
following conditions have been met.
Alarm Check
Cell Status Check
Parameter Check
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page9
Single Site Verification Preparation
Alarm Check
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.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page10
Single Site Verification Preparation
Cell Status Check
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.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page11
Single Site Verification Preparation
Parameter Check
The optimization engineer need to ensure the radio part
parameters configuration list has been achieved. In the list
the radio part parameters includes: LAC and
RAC ,frequency, the scrambling code, etc.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page12
Course Contents
Chapter 4 Problem example for site verification
Chapter 3 Single site verification
Chapter 2 Single site verification preparation
Chapter 1 Single site verification overview
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page13
Single Site Verification
Site Verification Items:
Installations: CPICH RSCP, CPICH Ec/Io, Rx Antenna
Swap Test
Settings: Frequency & SC, LAC/RAC
Functions: Voice (MT & MO), VP (MT & MO), etc.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page14
Single Site Verification
Test Process 1
Items: LAC and RAC
Purpose: Verify the LAC and RAC is as same as that of planning
Method: Power on the huawei626 mobile, press the Application Program,
and select 2 WCDMA network information, RAC and LAC in the network
can been seen.
Notes: if the LAC and RAC is not as same as that of RNP, we should
modify it and test it again
Application program
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page15
Single Site Verification
Test Process 2
Items: Frequency and Scrambling Code
Purpose: Check the frequency and scrambling code for
the verified cell if its right or not.
Method: Power on the huawei626 mobile, press the
Application Program, and select 3 WCDMA active
set/monitor set, Frequency DL and Scrambling Code in
the network can been see.
Notes: If the frequency and scrambling code is not as
same as that of the planning, there is some mistakes with
the parameter setting or the Tx antenna installation
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page16
Single Site Verification
Test Process 3
Items: CPICH RSCP and CPICH Ec/Io
Purpose: Check the CPICH RSCP and CPICH Ec/Io for the
verified cell is normal or not.
Method: Power on the huawei626 mobile, press the Application
Program, and select 3 WCDMA active set/monitor set. Check if
CPICH RSCP(Ec) is higher than -85dBm and CPICH Ec/Io is
higher than -8dB.
Notes: (1) The mobile shall be near the site.
(2) If it’s abnormal, maybe the Tx antenna installation
or the downlink interference have some problems.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page17
Single Site Verification
Test Process 4
Items: Voice Call (MT & MO)
Purpose: Verify the voice call function is normal and the
voice call quality is good
Method: Make the dialing test of 3G speech service
between two 3G mobiles, one for the terminating call and
another one for the originating call. Test the speech
communication quality by your feeling.
Notes: huawei626 mobile
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page18
Single Site Verification
Test Process 5
Items: VP Call (MT & MO)
Purpose: Verify the VP call function is normal and the VP
call quality is good
Method: Make the dialing test of 3G VP service between
two 3G mobiles, one for the terminating call and another
one for the originating call. Test the speech and photo
communication quality by your feeling.
Notes: huawei626 mobile
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page19
Single Site Verification
Test Process 6
Items: PS service
Purpose: Verify the PS function is normal and the PS
quality is good.
Method: Make the dialing test of 3G PS service, which
include WWW browsing and file downloading. Test the PS
connection quality by your feeling.
Notes: huawei626 mobile
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page20
Single Site Verification
Test Process 7
Items: Antenna swapping test
Purpose: Verify the Rx feeder installation is right or not
Method: Switch the transmitter from one feeder to another,
check the RSCP changed or not. If no change happened,
it means that the feeder is correct. Check the RSCP from
scanner
If the receive antenna crossed, the uplink diversity receive
gain is loss, and the uplink interfere is doubled. It will
affect the uplink capability. Check the RTWP of the cell.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page21
Single Site Verification
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page22
Single Site Verification
Troubleshooting:
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.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page23
Single Site Verification
Notice items 1: Test Point Choice
We shall choose the test point where the CPICH RSCP of
the target sector is high enough and that of other sector is
poor.
The test points should be chosen near the site and ideally
with line-of-sight to the site.
The test points should not be chosen under the site as the
signal of other sectors of same site is strong too.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page24
Single Site Verification
Notice items 2: Test Route Choice
The driving test route should connect the test points of the
sectors. It is required that signals not be shadowed by 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.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page25
Course Contents
Chapter 4 Problem example for site verification
Chapter 3 Single site verification
Chapter 2 Single site verification preparation
Chapter 1 Single site verification overview
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page26
Problem Example for Site Verification
In the site verification, following problems have been found
Scrambling Code Setting is wrong: The scrambling code
from scanner and mobile is different from the planning
After feeder swapped, the CPICH RSCP is 20dB lower
than before.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page27
Answers
Scrambling Code Setting is wrong
The Scrambling Code may be wrong in RNC, check the
datasheet in RNC.
If the Scrambling Code from scanner is the same as that
of another sector in same site planned, maybe the TX/RX
feeder is crossed to the another sector.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page28
Answers
After feeder swapped, the CPICH RSCP is 20dB lower than
before:
The RX feeder is crossed to the antenna of another sector.
In this case, the CPICH RSCP will be high in the coverage
area of the other antenna. Check the connection between
the feeder and the antenna.
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