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SUV

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SUV

SUV

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Transcript

  • 1. WCDMA RNO SINGLE SITE VERIFICATION
  • 2. Single Site Verification Overview Security Level: Internal
  • 3. 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 call access, call quality, handover and so on.
  • 4. 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
  • 5. 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.
  • 6. 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.
  • 7. 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: the scrambling code, power setting, neighbor cell list, handover parameter etc.
  • 8. Single Site Verification  Site Verification Items:  Installations: CPICH RSCP, CPICH Ec/Io, Rx Antenna Swap Test  Settings: Frequency & SC, Cell reselection parameters, LAC/RAC, Neighbor List.  Functions: LA/RA update, 3G<->2G Cell reselection, SMS (MT & MO), Voice (MT & MO), VP (MT & MO), PS Attach & Detach, PS service, Voice/VP/PS soft handover, Voice 3G->2G handover.
  • 9. 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.
  • 10. Single Site Verification  Notice items 1: Test Point Choice  We shall choose the test point where the CPICH RSCP of 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.
  • 11. 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.
  • 12. Single Site Verification  Notice items 3: Antenna Swapping Test Purpose  If the receive antenna crossed, the uplink diversity receive gain is loss, and the uplink interfere is doubled. It will affect the uplink capability.
  • 13. 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
  • 14.  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.
  • 15. Security Level: Internal