LTE/3G KPI Improvement Report
Contents
1. Summary 2
1.1. Summary of actions 2
1.2. Map of cluster 3
1.3. Site list 4
2. OSS KPI Achievement 4
2.1 RNC level improvement achievement 4
2.2 Cluster level improvement achievement 6
2.3 Cluster level KPI comparison 7
3. DT results 9
3.1. DT comparison plots and Issues 9
3.2. Static Test comparison 10
4. Issues 10
4.1. Hardware Issues 10
4.2. Inconsistency check 10
4.3. Waiting CRs 10
5. Summary of CRs 11
6. Knowledge Transfer 11
7. Customer Complain Report 12
8. WC analysis and actions 12
8.1. Before WC List 13
8.2. Latest WC List 13
8.3. General worst NodeB shown in below table 14
8.4. Worst Cell Improvement Trends 15
Summary of actions
We have to started second cluster optimization on Cluster_2. Cluster_6 generally contains Mazandaran provinces sites. There are totally 45 NodeB in second cluster. General problem is High drop rate and low accessibility rate due to some kind of congestion and transmission Link capacity problems.
We have solved congestion problems even Uplink Power congestion and HSUPA User congestion. After solving of congestion there are PDU retransmission rate is started to deteriorate due to transmission link capacity and link quality problems. Totally 11 CRs where implemented..
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Number of Cell based parameter changed
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Parameter Name
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Count
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Intra Neighboring Addition
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144
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SIB7
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648
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DL 64QAM
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648
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Downlink Call Admission
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648
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Uplink Call Admission
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648
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HS-SCCH Code Num
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648
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E-AGCH Code Num
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648
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E-RGCH Code Num
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648
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Maximum HSUPA User Number
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648
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Pcpich Power
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648
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Total
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5976
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Map of cluster
Site list
Site list: Total 45 NodeB’s
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Site ID
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MAZ0010
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MAZ0039
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MAZ0151
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MAZ0221
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MAZ5543
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MAZ0225
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MAZ0012
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MAZ0040
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MAZ0201
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MAZ0222
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MAZ5544
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MAZ0232
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MAZ0021
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MAZ0041
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MAZ0206
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MAZ0226
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MAZ5558
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MAZ0213
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MAZ0030
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MAZ0042
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MAZ0208
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MAZ0227
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MAZ6004
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MAZ0085
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MAZ0031
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MAZ0043
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MAZ0211
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MAZ0228
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MRK2500
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MAZ0033
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MAZ0034
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MAZ0044
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MAZ0212
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MAZ0231
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MRK2501
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MAZ0200
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MAZ0035
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MAZ0074
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MAZ0214
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MAZ0233
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MRK2503
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MAZ0036
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MAZ0096
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MAZ0218
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MAZ0235
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MRK2800
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MAZ0037
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MAZ0118
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MAZ0219
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MAZ0236
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MRK2502
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MAZ0038
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MAZ0140
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MAZ0220
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MAZ5541
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MAZ0224
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OSS KPI Achievement (RNC Base)
RNC level improvement achievement
RNC level KPI improvement
Due to international gate way problem, 5th till 13th of October have exclude from all KPI calculations on all RNCs
Cluster level improvement achievement
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CR Description
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CR Number
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Results
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Explanation
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Intra Neighboring addition
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CR_150711_1_CL1
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7-Nov-15
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SHO improvement
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Max Transmit Power Change..
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CR_150711_2
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7-Nov-15
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Throughput improvement
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Uplink Call Admission Change
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CR_150711_3
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7-Nov-15
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Upkink Power congestion clearence
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Downlink Call Admission Change
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CR_150711_3
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7-Nov-15
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Downlink Power congestion clearence
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Maximum HSUPA User increment
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CR_150711_3
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7-Nov-15
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HSUPA User congestion clearence
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HS-SCCH Increment
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CR_150711_3
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7-Nov-15
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Throughput improvement
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E-AGCH increment
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CR_150711_3
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7-Nov-15
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Throughput improvement
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R-AGCH increment
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CR_150711_3
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7-Nov-15
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Throughput improvement
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SIB_7 Activation
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CR_150711_3
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7-Nov-15
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Rtwp Improvement
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FACH User Num Not Ctrl Switch Activation
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CR_150711_3
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7-Nov-15
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FACH Congestion clearence
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PCPICH Power changes
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CR_150711_4
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7-Nov-15
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Pcpich Consistency correction
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Cluster level KPI comparison
Cluster KPI Comparison (Cluster_1 )
R99 PS RAB SSR affacted after implemenation of call re establishment CR and still under monitoring. We found which swithces affected this KPI and right now it is more than 99%.
Degredation on PS Traffic is because of internation GW (5-13 and 21-22 October) and DL Throughput is because of Mazandaran and Markazi TX problem.
4`th Cluster Improvement Trends.
DT results
DT comparison plots and Issues
We cannot compare DT result due to we were not perform after DT. Because there are high PDU Retransmission Rate, IP Path Lost Rate on Mazandaran provinces. If we were perform DT, DT result will not show any success rates due to those problems.
Static Test comparison
We cannot compare Static DT result due to we were not perform after DT. Because there are high PDU Retransmission Rate, IP Path Lost Rate on Mazandaran provinces. If we were perform DT, DT result will not show any success rates due to those problems.
Issues
Hardware Issues
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Problem description
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Escalation Date
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Explanation
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Result
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SCTP Link Fault
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9/28/2015
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Mazandaran & Kerman
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NOT SOLVED
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High Channel Element Board Usage
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11/1/2015
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TOTAL 12 NodeB need board addition
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SOLVED
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Base Station Service Overload
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11/1/2015
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2 Nodeb Need WMPT to UMPT Replacemtn
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SOLVED
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High IP Path Lost Rate
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11/1/2015
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MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
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SOLVED
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High IP Path Lost Rate
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11/1/2015
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MAZANDARAN
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NOT SOLVED
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High IP Path Lost Rate
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11/1/2015
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KERMAN
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NOT SOLVED
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IP Path Delay Problem
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11/1/2015
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MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
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SOLVED
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IP Path Delay Problem
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11/1/2015
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MAZANDARAN
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NOT SOLVED
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IP Path Delay Problem
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11/1/2015
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KERMAN
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NOT SOLVED
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PDU Retransmission Rate
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11/1/2015
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MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
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SOLVED
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PDU Retransmission Rate
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11/1/2015
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MAZANDARAN
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NOT SOLVED
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PDU Retransmission Rate
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11/1/2015
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KERMAN
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NOT SOLVED
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RET Problem
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11/1/2015
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MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
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NOT SOLVED
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RET Problem
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11/1/2015
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MAZANDARAN
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NOT SOLVED
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RET Problem
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11/1/2015
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KERMAN
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NOT SOLVED
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Inconsistency check
There is no any inconsistency…
Waiting CRs
There is no any waiting CR…
Summary of CRs
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CR Description
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CR Number
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Results
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Explanation
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Intra Neighboring addition
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CR_150711_1_CL1
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7-Nov-15
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SHO improvement
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Max Transmit Power Change..
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CR_150711_2
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7-Nov-15
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Throughput improvement
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Uplink Call Admission Change
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CR_150711_3
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7-Nov-15
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Upkink Power congestion clearence
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Downlink Call Admission Change
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CR_150711_3
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7-Nov-15
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Downlink Power congestion clearence
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Maximum HSUPA User increment
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CR_150711_3
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7-Nov-15
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HSUPA User congestion clearence
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HS-SCCH Increment
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CR_150711_3
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7-Nov-15
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Throughput improvement
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E-AGCH increment
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CR_150711_3
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7-Nov-15
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Throughput improvement
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R-AGCH increment
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CR_150711_3
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7-Nov-15
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Throughput improvement
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SIB_7 Activation
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CR_150711_3
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7-Nov-15
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Rtwp Improvement
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FACH User Num Not Ctrl Switch Activation
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CR_150711_3
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7-Nov-15
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FACH Congestion clearence
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PCPICH Power changes
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CR_150711_4
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7-Nov-15
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Pcpich Consistency correction
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WC analysis and actions
For worst cell we were perform analysis for found reason of worst cells… After analysis we were found all cells has high PDU Retransmission Rate, High Uplink Power congestion, High HSUPA User Congestion, High Downlink Power congestion… For solution we follow below issues…
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Problem description
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Explanation
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High PDU Retransmission Rate
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Transmission Bandwidth increment
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High IP Path Delay Time
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Transmission Bandwidth increment
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High Uplink Power congestion
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Uplink Call Admission Threshold change
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High Downlink Power congestion
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Downlink Call Admission Threshold change
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High HSUPA User Congestion
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Max HSUPA User Number increment
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SCTP Link Congestion
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Transmission Bandwidth increment
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Before WC List
Latest WC List
General worst NodeB shown in below..
MRK2503, MRK2508, MRK2800…
After analysis cells of above Node’s, we were found; high uplink power congestion, high downlink power congestion, high HSUPA user congestion. Due to the congestions cell RAB Setup Success Rate, RRC Setup Success Rate, throughput rate, drop rate was bad conditions…
For solutions we were done below specific action actions shown in tables…
Note: Transmission issue is not solved yet on Mazandaran provinces… It is pending on TX team…
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Problem description
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Explanation
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High PDU Retransmission Rate
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Transmission Bandwidth increment
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High IP Path Delay Time
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Transmission Bandwidth increment
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High Uplink Power congestion
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Uplink Call Admission Threshold change
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High Downlink Power congestion
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Downlink Call Admission Threshold change
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High HSUPA User Congestion
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Max HSUPA User Number increment
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SCTP Link Congestion
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Transmission Bandwidth increment
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