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1 Nokia Siemens Networks Presentation / Author / Date
Basic RF optimizationWhat is possible to do with PM counters?
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Bad downlink vs good downlink, live networkexample
0
10000000
20000000
30000000
40000000
50000000
60000000
70000000
100589 100953
Sum of M8010C036 UE Reported CQI Level 00
Sum of M8010C037 UE Reported CQI Level 01
Sum of M8010C038 UE Reported CQI Level 02
Sum of M8010C039 UE Reported CQI Level 03
Sum of M8010C040 UE Reported CQI Level 04Sum of M8010C041 UE Reported CQI Level 05
Sum of M8010C042 UE Reported CQI Level 06
Sum of M8010C043 UE Reported CQI Level 07
Sum of M8010C044 UE Reported CQI Level 08
Sum of M8010C045 UE Reported CQI Level 09
Sum of M8010C046 UE Reported CQI Level 10
Sum of M8010C047 UE Reported CQI Level 11
Sum of M8010C048 UE Reported CQI Level 12
Sum of M8010C049 UE Reported CQI Level 13
Sum of M8010C050 UE Reported CQI Level 14
Sum of M8010C051 UE Reported CQI Level 15
BTS
Data
CQI = 14
Good DL coverage
Fairly bad DL
coverage (or DL
interference)
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Bad uplink coverage vs good uplink coverage, livenetwork example
0
50000
100000
150000
200000
250000
300000
350000
400000
450000
500000
100589 100953
Sum of M8005C054 UE Power Headroom for
PUSCH Level 1
Sum of M8005C055 UE Power Headroom forPUSCH Level 2
Sum of M8005C056 UE Power Headroom forPUSCH Level 3
Sum of M8005C057 UE Power Headroom forPUSCH Level 4
Sum of M8005C058 UE Power Headroom forPUSCH Level 5
Sum of M8005C059 UE Power Headroom forPUSCH Level 6
Sum of M8005C060 UE Power Headroom forPUSCH Level 7
Sum of M8005C061 UE Power Headroom forPUSCH Level 8
Sum of M8005C062 UE Power Headroom forPUSCH Level 9
Sum of M8005C063 UE Power Headroom forPUSCH Level 10
Sum of M8005C064 UE Power Headroom forPUSCH Level 11
Sum of M8005C065 UE Power Headroom forPUSCH Level 12
Sum of M8005C066 UE Power Headroom forPUSCH Level 13
Sum of M8005C067 UE Power Headroom forPUSCH Level 14
Sum of M8005C068 UE Power Headroom forPUSCH Level 15
Sum of M8005C069 UE Power Headroom forPUSCH Level 16
Sum of M8005C070 UE Power Headroom forBTS
Data
UE Power Headroom: --
1dB
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UL Power Headroom
For PUSCH, subframeipower headroom is:
UL power headroom presents the available UE txpower
Note: negative values allowed max UE tx powerTable below shows UE reporting range
)()()()())((log10)(TFO_PUSCHPUSCH10CMAX
ifiPLjjPiMPiPH
Reported value Measured quantity value (dB)
POWER_HEADROOM_0 -23 PH -22
POWER_HEADROOM_1 -22 PH -21
POWER_HEADROOM_2 -21 PH -20
POWER_HEADROOM_3 -20 PH -19
POWER_HEADROOM_4 -19 PH -18
POWER_HEADROOM_5 -18 PH -17
POWER_HEADROOM_61 38 PH 39
POWER_HEADROOM_62 39 PH 40
POWER_HEADROOM_63 PH 40
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Transmission share, PDSCH
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
20.00
MCS1
MCS2
MCS3
MCS4
MCS5
MCS6
MCS7
MCS8
MCS9
MCS10
MCS11
MCS12
MCS13
MCS14
MCS15
MCS16
MCS17
MCS18
MCS19
MCS20
MCS21
MCS22
MCS23
MCS24
MCS25
MCS26
MCS27
MCS28
Cell1
Cell2
Cell3
DL MCS distr ibutions
Share of DL Traffic per MCS
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
20.00
MCS0
MCS1
MCS2
MCS3
MCS4
MCS5
MCS6
MCS7
MCS8
MCS9
MCS10
MCS11
MCS12
MCS13
MCS14
MCS15
MCS16
MCS17
MCS18
MCS19
MCS20
MCS21
MCS22
MCS23
MCS24
MCS25
MCS26
MCS27
MCS28
Cell1
Cell2
Cell3
. Transmission share per MCS startswith MCS1, having 28 categories for
MCS. MCS 0 is missing.
MCS 10 and 17 are used very
seldom.
In most cases higher MCSs carry
more traffic compared to
transmission share of those.
However, in some cells the there is
opposite trend (could be due to
different MIMO mode distribution?)
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
OL div OL spatial mux
Cell1
Cell2
Cell3
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UL MCS distr ibutionsTransmission share, PUSCH
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
MCS
0
MCS
1
MCS
2
MCS
3
MCS
4
MCS
5
MCS
6
MCS7
MCS
8
MCS
9
MCS
10
MCS
11
MCS
12
MCS
13
MCS
14
MCS
15
MCS
16
MCS
17
MCS
18
MCS
19
MCS
20
MCS
21
MCS
22
MCS
23
MCS
24
MCS
25
MCS
26
MCS
27
MCS
28
Cell1
Cell2
Cell3
Share of UL Traffic per MCS
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
100.00
MCS0
MCS1
MCS2
MCS3
MCS4
MCS5
MCS6
MCS7
MCS8
MCS9
MCS10
MCS11
MCS12
MCS13
MCS14
MCS15
MCS16
MCS17
MCS18
MCS19
MCS20
Cell1
Cell2
Cell3
Maximum MCS is used mostly in UL. Inthis case, having higer MCSs available in
UL would bring capacity gain.
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UE Tx power
Level1: -23-21dB => UE tx power
Level31: 37..39dB
UE Power Headroom
0
100
200
300
400
500
600
Level1
Level2
Level3
Level4
Level5
Level6
Level7
Level8
Level9
Level10
Level11
Level12
Level13
Level14
Level15
Level16
Level17
Level18
Level19
Level20
Level21
Level22
Level23
Level24
Level25
Level26
Level27
Level28
Level29
Level30
Level31
Level32
Cell1
Cell2
Cell3
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Cell load, PRBs
Utilization is either very low (
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CQI vs. MCS/MIMO distributionUE reported CQI per level
0
10,000
20,000
30,000
40,000
50,000
60,000
Level0
0
Level0
1
Level0
2
Level0
3
Level0
4
Level05
Level0
6
Level07
Level0
8
Level0
9
Level1
0
Level1
1
Level1
2
Level1
3
Level1
4
Level15
Cell1
Cell2
Cell3
Transmission share, PDSCH
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
MCS1
MCS2
MCS3
MCS4
MCS5
MCS6
MCS7
MCS8
MCS9
MCS10
MCS11
MCS12
MCS13
MCS14
MCS15
MCS16
MCS17
MCS18
MCS19
MCS20
MCS21
MCS22
MCS23
MCS24
MCS25
MCS26
MCS27
MCS28
Cell1
Cell2
Cell3
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
OL div OL spatial mux
Cell1
Cell2
Cell3
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Reporting Suite RL10 example
Need NetAct OSS
Period start time PLMN NameCell Avail Cell Avail excl BLU MO_S att MT att MO_D att Others att RRC SSR Rel SR Stp att Data stp SR Data SR Data DR
LTE_5750A LTE_5239A LTE_5232A LTE_523 LTE_5234A LTE_5235A LTE_5218 LTE_521 LTE_522 LTE_5116 LTE_5003A LTE_5117 LTE_5004
03.08.2011 NTN 92.02 96.30 71 8 359 0 99.32 786 50.25 549 100.00 96.26 3.74
03.09.2011 NTN 95.65 100.00 247 230 872 0 98.89 2 244 54.32 1 741 99.20 97.69 2.31
03.10.2011 NTN 95.55 99.94 400 41 1 121 0 94.88 1 952 55.48 2 466 97.49 86.57 13.43
03.11.2011 NTN 95.61 99.91 3 820 64 1 256 0 42.35 2 637 73.23 3 016 99.67 93.72 6.28
03.12.2011 NTN 95.65 100.00 1 23 687 0 94.66 673 61.96 670 100.00 62.24 37.76
03.13.2011 NTN 95.65 100.00 0 0 0 0 0 0
03.14.2011 NTN 95.61 100.00 1 142 133 4 117 0 87.30 4 860 75.39 8 799 98.42 90.83 9.1703.15.2011 NTN 94.99 99.30 2 193 35 7 358 0 82.95 7 980 90.65 10 227 98.69 97.44 2.56
03.16.2011 NTN 91.30 95.20 2 051 39 9 680 0 82.12 9 881 91.84 10 063 99.72 98.12 1.88
03.17.2011 NTN 91.68 95.66 2 504 59 6 518 0 81.51 8 092 81.14 7 603 99.72 96.57 3.43
03.18.2011 NTN 91.65 95.59 1 527 3 7 937 0 88.87 9 115 85.09 11 825 99.04 98.19 1.81
03.19.2011 NTN 91.68 95.65 615 0 8 574 0 98.05 9 010 93.50 8 607 99.98 99.60 0.40
03.20.2011 NTN 91.68 95.65 645 0 8 785 0 97.01 9 150 93.28 8 876 99.97 99.58 0.42
03.21.2011 NTN 91.67 95.65 826 0 10 858 0 93.39 9 353 93.49 9 594 99.75 98.97 1.03
Cell Availability RRC connections Radio Bearer
example_rs_report_RL10.xls
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KPI reporter example
The counter data is stored in iOMS xmlfilesBU directory
https://isource.access.nokiasiemensnetworks.com/projects/kpireporter/
https://isource.access.nokiasiemensnetworks.com/projects/kpireporter/https://isource.access.nokiasiemensnetworks.com/projects/kpireporter/8/12/2019 08_d Basic RF Optimization Based on Counters
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Some PM obstacles RL10/RL20
No Timing Advance statistics
Cannot identify overshooting cells No PRACH statistics for discarded preambles due to
excessive distance Cannot troubleshoot PRACH problems for overshooting cells
No active state (scheduled) UE/cell throughput
Not possible to directly tell actual per-tti UE/cell tput as in HSDPA No UL noise rise measurement
Radio drop reasons not identified in counters No TA timer expiry or Radio Link Failure counters (just generic radio
drop counter) Emil needed for detailed drop call analysis
No bearer holding time available (directly) cannot calculateradio drops per minuteAlways-on applications reserve bearers for long time and even a few
drops can result in poor-looking drop ratio
Minutes per drop might be a better KPI..