Original article, the author Lu Dongming, please indicate.
In daily treatment chamber city weak coverage TOP cell division, the bank stores State Building Green bath springs 70 -ZLWE-1 cells March weak coverage MR, MR coverage (%) less than 90% .
| date | District name | RSRP total sampling points | RSRP weak coverage sampling point | MR coverage (%) |
| 2019/3/8 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 28423 | 10440 | 63.26 |
| 2019/3/9 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 30515 | 7294 | 76.09 |
| 2019/3/10 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 17231 | 3068 | 82.19 |
| 2019/3/11 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 21540 | 6510 | 69.77 |
| 2019/3/12 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 22584 | 7915 | 64.95 |
| 2019/3/13 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 9728 | 575 | 84.08 |
| 2019/3/14 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 32836 | 9048 | 72.44 |
| 2019/3/15 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 37741 | 9454 | 74.95 |
| 2019/3/16 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 29273 | 7551 | 74.2 |
| 2019/3/17 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 37724 | 7884 | 79.1 |
| 2019/3/18 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 33723 | 6107 | 81.89 |
| 2019/3/19 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 29607 | 9097 | 69.27 |
| 2019/3/20 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 27099 | 6189 | 77.16 |
1 , alarm investigation
Query the current state of the normal cell, the cell had no effect on current and historical service alarm.
2 , arranged neighboring investigation
No All neighboring relations have been configured according to station location information verification surrounding macro station. And neighbor relations data has been configured for verification, to find out if there is an error configuration (such as: frequency, TAC, PCI, etc.). Indicators handover success rates are as follows:
| date | Cell Chinese name | An inter-frequency handover execution request frequency | The number of successful inter-frequency handover | Handover success rate |
| 2019/3/8 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 3104 | 2854 | 91.9458 |
| 2019/3/9 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 3347 | 3114 | 93.0385 |
| 2019/3/10 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 1924 | 1792 | 93.1392 |
| 2019/3/11 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 2226 | 2073 | 93.1266 |
| 2019/3/12 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 1790 | 1706 | 95.3072 |
| 2019/3/13 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 491 | 469 | 95.5193 |
| 2019/3/14 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 2943 | 2794 | 94.9371 |
| 2019/3/15 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 3555 | 3373 | 94.8804 |
| 2019/3/16 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 4582 | 4344 | 94.8057 |
| 2019/3/17 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 4685 | 4454 | 95.0085 |
| 2019/3/18 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 3485 | 3362 | 96.4429 |
| 2019/3/19 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 4442 | 4195 | 94.4394 |
| 2019/3/20 | Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 2043 | 1941 | 94.868 |
FIG position information as follows:
The success rate of the handover indicator can be seen that inter-frequency handover handover problem exists, from the position of the base station there can be seen surrounding band D, F band, FDD1800, State Analyzing springs can store the bank bath Green Building 70 -ZLWE-1 cells with the presence or missing neighboring handover parameter unreasonable case the switch fails, thus affecting the MR coverage.
3 , on-site investigation
Presence of field testing found weak coverage, mainly lead switching is not urgent, the verification background switching, and switching threshold discovery, the background switches between A5, threshold 1 is set to -108dB, threshold 2 is set to -90dB, resulting in switching the difficult modification -105dB handover threshold 1, threshold 2 is -100dB, adjusted normal switch, cut out in time where weaker coverage. Indicators are as follows:
| District name | RSRP total sampling points | RSRP weak coverage sampling point | MR coverage (%) |
| Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 17086 | 71 | 99.58 |
| Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 21771 | 60 | 99.72 |
| Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 13655 | 125 | 99.08 |
Switch indicators
| Cell Chinese name | An inter-frequency handover execution request frequency | The number of successful inter-frequency handover | Handover success rate |
| Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 3821 | 3784 | 99.0476 |
| Cui Qing springs bathing embankment shop, Building 70 -ZLWE-1 | 2043 | 2043 | 100 |
Follow-up Summary:
In field tests found not missed neighboring distribution caused, but since the switching threshold setting unreasonable due to, limit set flat Analysis The field test data and back doors, modified A5 threshold, Threshold 1 a -108 adjusted to -105, threshold 2 from the - 90 adjustment is -100, after adjustment problem is solved.
The existing network switching event A1 / A2 / A3 / A4 / A5 reasonable threshold set to avoid the threshold is set too high because the switch is not timely, frequent switching threshold is set too low.