WCDMA Single Site VerificationISSUE 1.0 Huawei Confidential. All Rights Reserved Internal Use The single site function verification is critical in the process of the WCDMA network optimization, which mainly includes the test purpose, methods, process, input and output. 2 Chapter 1 Single site verification overview Chapter 2 Single site verification preparation Chapter 3 Single site verification Chapter 4 Problem example for site verification Internal Use 3 Single Site Verification Overview Internal Use 4 Single Site Verification Overview Internal Use 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. handover and so on. such as call access. call quality. 5 . Single Site Verification Overview Content: Through the single site function verification. the following functions for each cell shall be checked as normal : Internal Use Verify coverage ( CPICH RSCP & Ec/Io ) Verify scrambling code Verify no installation faults (e. crossed feeders) Make service call test 6 .g. UE status. solve problem and so on. Data collection software: used to display and log the signal strength. Motorola A835. analysis signal. Actix Analyzer software. 7 .Single Site Verification Overview Tools: Internal Use Drive test scanner : used for collecting the pilot signal data. Huawei U626 mobile. signal message and so on in time. Data analysis software: used to resolve message. Qualcomm 6200. Test UE : used for service verification and system message collection. Agilent E6474A software. Agilent E6455C. Chapter 1 Single site verification overview Chapter 2 Single site verification preparation Chapter 3 Single site verification Chapter 4 Problem example for site verification Internal Use 8 . we should ensure the following conditions are met.Single Site Verification Preparation Before the single site verification. Internal Use Alarm Check Cell Status Check Parameter Check 9 . 10 . It is important for the optimization engineer prior to any field test to check with product support engineer regarding any alarms especially intermittent alarms.Single Site Verification Preparation Alarm Internal Use Check The product support engineer will be responsible for checking and resolving all the alarms. It is important for the network optimization engineer prior to any field test to confirm with product support engineer regarding cell state.Single Site Verification Preparation Cell Status Check Internal Use The product support engineer will be responsible for checking and resolving all the cell state problems. 11 . 12 . In the list the radio part parameters includes: the scrambling code. neighbor cell list. power setting.Single Site Verification Preparation Parameter Internal Use Check The optimization engineer need to ensure the radio part parameters configuration list has been achieved. handover parameter etc. Chapter 1 Single site verification overview Chapter 2 Single site verification preparation Chapter 3 Single site verification Chapter 4 Problem example for site verification Internal Use 13 . LAC/RAC.Single Site Verification Items Installations: Installations CPICH RSCP. Voice/VP/PS soft handover. PS service. Voice 3G->2G handover. Cell reselection parameters. VP (MT & MO). 14 . CPICH Ec/Io. Rx Antenna Swap Test Settings: Settings Frequency & SC. Neighbor List. Functions: Functions Internal Use LA/RA update 3G<->2G Cell reselection SMS (MT & MO) Voice (MT & MO). PS Attach & Detach. Notes: If the ‘WC’ is shown on the mobile. Method: Power on the Qualcomm mobile. it means the LA update is OK. the RA update procedure is OK.Single Site Verification Test Process 1 Internal Use Items: LA update / RA update / PS Attach Purpose: Verify the LA update and RA update functions are normal. it means the LA update procedure is OK. If the ‘P’ is shown on the mobile. the PS attach is OK. 15 . the PA attach function is normal. if the ‘WCP’ indication is shown on the mobile screen. it means the RA update and the PS attach is OK. if the ‘WCP’ indication is changed to ‘WC’ indication on the mobile screen.Single Site Verification Test Process 2 Internal Use Items: PS Detach Purpose: Verify the PA detach function is normal Method: Choose “Menu -> 5 -> 9 -> 2” on Qualcomm mobile. PS detach is OK. Notes: N/A 16 . maybe the parameter setting or the Tx antenna installation have some mistake. observe cell frequency and scrambling code from UMTS CPICH View window. Notes: N/A 17 . Check the frequency and scrambling code for the verified cell is as same as planning. If it’s wrong.Single Site Verification Internal Use Test Process 3 Items: Frequency and Scrambling Code Purpose: Check the frequency and scrambling code for the verified cell is right or not. Method: Setup the Agilent E6474A software. Single Site Verification Internal Use 18 . observe CPICH RSCP and CPICH Ec/Io from UMTS Status View window. Method: In the Agilent E6474A software. Check if CPICH RSCP is higher than -85dBm and CPICH Ec/Io is higher than -8dB. If it’s abnormal. maybe the Tx antenna installation or the downlink interference have some problems. 19 .Single Site Verification Test Process 4 Internal Use Items: CPICH RSCP and CPICH Ec/Io Purpose: Check the CPICH RSCP and CPICH Ec/Io for the verified cell is normal or not. When we use the Qualcomm mobile to check the CPICH RSCP and CPICH Ec/Io. 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 Internal Use 20 .Single Site Verification Notes: The mobile shall be near the site The CPICH RSCP and Ec/Io can be seen from scanner or Qualcomm mobile. Single Site Verification Internal Use 21 . one for the terminating call and another one for the originating call. Notes: Qualcomm or Motorola mobile Internal Use 22 .Single Site Verification Test Process 5 Items: Voice Call (MT & MO) Purpose: Verify the voice call function is normal and the voice call quality is good Method: Perform dial test of 3G speech service between two 3G mobiles. Notes: Motorola mobile Internal Use 23 . one for the terminating call and another one for the originating call.Single Site Verification Test Process 6 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. which include WWW browsing and file downloading. Notes: Qualcomm or Motorola mobile 24 .Single Site Verification Test Process 7 Internal Use 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. Notes: Internal Use Motorola mobile 25 . one for the terminating call and another one for the originating call.Single Site Verification Test Process 8 Items: SMS (MT & MO) Purpose: Verify the SMS function is normal Method: Make the dialing test of 3G SMS service between two 3G mobiles. Neighbor List Purpose: Check the parameters setting for the verified cell Method: UE shall read the system information when UE is in idle mode. Collect UE reserved message and check the parameters with Actix Analyzer software after the drive test. LAC/RAC.Single Site Verification Test Process 9 Internal Use Items: Cell reselection parameters. Notes: Cell reselection parameters: SIB3 LAC/RAC: SIB1 Neighbor list: SIB 11 26 . 2G->3G cell reselection Purpose: Verify the 3G->2G handover and 3G<->2G cell reselection functions are normal. Move from 2G to 3G. Notes: Use the Motorola mobile to do the test. Move from 3G to 2G. the mobile with voice call shall handover to 2G and the mobile in idle mode shall reselect to 2G. One mobile is keeping a voice call and another one is in idle mode.Single Site Verification Test Process 10 Internal Use Items: 3G->2G voice handover. Method: Find a place where there is 2G signal without 3G signal. 3G->2G cell reselection. the ‘3G’ or ‘2G’ indication is shown on the mobile screen 27 . the mobile in idle mode shall reselect to 3G. check the RSCP changed or not. Notes: Check the RSCP from scanner Internal Use 28 .Single Site Verification Test Process 11 Items: Antenna swapping test Purpose: Verify the Rx feeder installation is right. If no change happened. Method: Switch the transmitter from one feeder to another. it means that the feeder is correct. Single Site Verification Internal Use 29 . PS) Purpose: Verify the soft handover function is normal Method: Take a speech service or VP service or PS service call and keep it. observe the CPICH scrambling code changing from Agilent UMTS CPICH View. and observe the active set update message from UMTS Protocol Messages View.Single Site Verification Test Process 12 Internal Use Items: Soft handover (Voice. During the process. Verify the soft handover from one sector to another sector. Notes: N/A 30 . VP. Single Site Verification Internal Use 31 . Single Site Verification Internal Use 32 . Internal Use 33 . Track the problems until they are solved.Single Site Verification Troubleshooting: The problem recording list should be filled in and the product support engineer should be encouraged to solve the problems. The test points should not be chosen under the site as the signal of other sectors of same site are also strong. 34 .Single Site Verification Notice items 1: Test Point Choice Internal Use We should choose the test point where the CPICH RSCP of target sector is high enough. The test points should be chosen near the site and ideally with line-of-sight to the site. Single Site Verification Notice items 2: Test Route Choice The driving test route should connect the test points of the sectors. Internal Use 35 . It is required that signals not be shadowed by buildings along the test route to avoid turning the test into a coverage test. Internal Use 36 . the uplink diversity receive gain is loss.Single Site Verification Notice items 3: Antenna Swapping Test Purpose If the receive antenna crossed. and the uplink interfere is doubled. If the RTWP is too high in nonloaded situation and no other interference. we can swap the Tx/Rx feeder and Rx feeder to check the downlink power. It will affect the uplink capability. Chapter 1 Single site verification overview Chapter 2 Single site verification preparation Chapter 3 Single site verification Chapter 4 Problem example for site verification Internal Use 37 . Problem Example for Site Verification In site verification. the CPICH RSCP is 20dB lower than before. Internal Use 38 . 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. check the datasheet in RNC. 39 .Answers Scrambling Code Setting is wrong Internal Use The Scrambling Code may be wrong 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. Answers After feeder swapped. 40 . the CPICH RSCP is 20dB lower than before: Internal Use The RX feeder is crossed to the antenna of another sector. Check the connection between the feeder and the antenna. In this case. the CPICH RSCP will be high in the coverage area of the other antenna. Huawei Confidential. All Rights Reserved .