Updated
Analysis : GSM Dashboard Interference Increase : South
<Background>
MA OPT observe GSM Interference increase in
Weekly dashboard monitoring
KPI impact : GSM Interference (4-5)% Band.
GSM Technology
KPI
<Region Degraded>
• Top cells belongs to Mongla boarder.
• Previously since W04 the degradation was due to 2 Top sites
(SHE00322 & SHE00159) (Still High interference)
• In latest WK09 KPIs , another 03 top sites (SHE00393,
SHE00336 & SHE00027) seen increased interference.
Baseline WK04
WK05
WK06
WK07
WK08
WK09
TCH DR (%)
1.17
1.05
1.03
1.04
1.10
1.10
1.17
CS CSSR (%)
94.29
94.91
94.92
95.19
94.76
94.90
94.45
HOSR (%)
93.50
94.48
94.71
94.50
93.76
TCH Cong (%)
3.00
1.48
1.4
1.4
94.06
94.26
Interference
Increase
1.5
1.5
Mute call ratio
Interference (4,5
%)
0.93
0.22
0.2
0.3
0.4
0.6
1.1
0.37
0.42
0.45
0.47
0.52
0.45
0.48
SDCCH Cong (%) 0.60
0.88
0.83
0.76
0.60
0.52
0.76
64880
58766
58174
58051
59418
58661
57007
99.14
97.69
97.88
97.71
97.73
97.75
97.75
CS Traffic (Erl)
Cell Availability
(%)
1.5
<Next Action>
• All 5 cells (SHE region: Mongla ) keep further monitoring.
Wk-8
SHE Region
Wk-9
SHE00393
SHE00336
20
Wk-8
SHE00027
SHE00322
2022-02-26
2022-02-25
2022-02-24
2022-02-23
2022-02-22
2022-02-21
2022-02-20
2022-02-19
0
2022-02-18
2022-02-26
2022-02-25
2022-02-24
2022-02-23
2022-02-22
2022-02-21
2022-02-20
2022-02-19
2022-02-18
2022-02-17
2022-02-16
2022-02-15
2022-02-14
3
40
2022-02-17
3,5
60
2022-02-16
4
Interference
reduced in 2 old
top cells
80
2022-02-15
4,5
100
2022-02-14
120
100
80
60
40
20
0
SHE region
degraded and
recovered
5
2022-02-13
SHE Region
5,5
Interference Band [4-5]%
BBH
2022-02-13
Interference Band [4-5]%
BBH
Top 3 sites
WK09 Degradation cells
Wk-9
SHE00159
1