WCDMA OR 3G KPI Improvement Report


WCDMA OR 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..
Number of Cell based parameter changed
Parameter Name
Count
Intra Neighboring Addition
144
SIB7
648
DL 64QAM
648
Downlink Call Admission
648
Uplink Call Admission
648
HS-SCCH Code Num
648
E-AGCH Code Num
648
E-RGCH Code Num
648
Maximum HSUPA User Number
648
Pcpich Power
648
Total
5976

                 

Map of cluster

Map of cluster

Site list

Site list: Total 45 NodeB’s
Site ID
MAZ0010
MAZ0039
MAZ0151
MAZ0221
MAZ5543
MAZ0225
MAZ0012
MAZ0040
MAZ0201
MAZ0222
MAZ5544
MAZ0232
MAZ0021
MAZ0041
MAZ0206
MAZ0226
MAZ5558
MAZ0213
MAZ0030
MAZ0042
MAZ0208
MAZ0227
MAZ6004
MAZ0085
MAZ0031
MAZ0043
MAZ0211
MAZ0228
MRK2500
MAZ0033
MAZ0034
MAZ0044
MAZ0212
MAZ0231
MRK2501
MAZ0200
MAZ0035
MAZ0074
MAZ0214
MAZ0233
MRK2503
MAZ0036
MAZ0096
MAZ0218
MAZ0235
MRK2800
MAZ0037
MAZ0118
MAZ0219
MAZ0236
MRK2502
MAZ0038
MAZ0140
MAZ0220
MAZ5541
MAZ0224

OSS KPI Achievement (RNC Base)

RNC level improvement achievement

RNC level improvement achievementRNC level improvement achievementRNC level improvement achievementRNC level improvement achievement

RNC level KPI improvement

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

CR Description
CR Number
Results
Explanation
Intra Neighboring addition
CR_150711_1_CL1
7-Nov-15
SHO  improvement
Max Transmit Power Change..
CR_150711_2
7-Nov-15
Throughput improvement
Uplink Call Admission Change
CR_150711_3
7-Nov-15
Upkink Power congestion clearence
Downlink Call Admission Change
CR_150711_3
7-Nov-15
Downlink Power congestion clearence
Maximum HSUPA User increment
CR_150711_3
7-Nov-15
HSUPA User congestion clearence
HS-SCCH Increment
CR_150711_3
7-Nov-15
Throughput improvement
E-AGCH increment
CR_150711_3
7-Nov-15
Throughput improvement
R-AGCH increment
CR_150711_3
7-Nov-15
Throughput improvement
SIB_7 Activation
CR_150711_3
7-Nov-15
Rtwp Improvement
FACH User Num Not Ctrl Switch Activation
CR_150711_3
7-Nov-15
FACH Congestion clearence
PCPICH Power changes
CR_150711_4
7-Nov-15
Pcpich Consistency correction

  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.

4th Cluster Improvement Trends

Cluster level improvement achievement
Cluster level improvement achievementCluster level improvement achievementCluster level improvement achievement

 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

Problem description
Escalation Date
Explanation
Result
SCTP Link Fault
9/28/2015
Mazandaran & Kerman
NOT SOLVED
High  Channel Element Board Usage
11/1/2015
TOTAL 12 NodeB need board addition
SOLVED
Base Station Service Overload
11/1/2015
2 Nodeb Need WMPT to UMPT Replacemtn
SOLVED
High IP Path Lost Rate
11/1/2015
MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
SOLVED
High IP Path Lost Rate
11/1/2015
MAZANDARAN
NOT SOLVED
High IP Path Lost Rate
11/1/2015
KERMAN
NOT SOLVED
IP Path Delay Problem
11/1/2015
MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
SOLVED
IP Path Delay Problem
11/1/2015
MAZANDARAN
NOT SOLVED
IP Path Delay Problem
11/1/2015
KERMAN
NOT SOLVED
PDU Retransmission Rate
11/1/2015
MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
SOLVED
PDU Retransmission Rate
11/1/2015
MAZANDARAN
NOT SOLVED
PDU Retransmission Rate
11/1/2015
KERMAN
NOT SOLVED
RET Problem
11/1/2015
MARKAZI ( MRK2503 – MRK2508 – MRK2800 )
NOT SOLVED
RET Problem
11/1/2015
MAZANDARAN
NOT SOLVED
RET Problem
11/1/2015
KERMAN
NOT SOLVED

 Inconsistency check

There is no any inconsistency…

Waiting CRs

There is no any waiting CR…

Summary of CRs

CR Description
CR Number
Results
Explanation
Intra Neighboring addition
CR_150711_1_CL1
7-Nov-15
SHO  improvement
Max Transmit Power Change..
CR_150711_2
7-Nov-15
Throughput improvement
Uplink Call Admission Change
CR_150711_3
7-Nov-15
Upkink Power congestion clearence
Downlink Call Admission Change
CR_150711_3
7-Nov-15
Downlink Power congestion clearence
Maximum HSUPA User increment
CR_150711_3
7-Nov-15
HSUPA User congestion clearence
HS-SCCH Increment
CR_150711_3
7-Nov-15
Throughput improvement
E-AGCH increment
CR_150711_3
7-Nov-15
Throughput improvement
R-AGCH increment
CR_150711_3
7-Nov-15
Throughput improvement
SIB_7 Activation
CR_150711_3
7-Nov-15
Rtwp Improvement
FACH User Num Not Ctrl Switch Activation
CR_150711_3
7-Nov-15
FACH Congestion clearence
PCPICH Power changes
CR_150711_4
7-Nov-15
Pcpich Consistency correction

 Knowledge Transfer

CR meeting date
CR Number(s)
04.11.2015
All CR

Customer Complain Report

TT number
Result (closed-pending to get support- waiting to get feedback from call center)
2004-1101-024-940303-1
Closed
2004-1210-009-940207-1
Closed
2004-1210-005-940514-1
Closed
2004-1220-002-940611-1
Closed
2004-1220-004-940618-1
Closed
2004-1101-026-940608-1
Closed
2004-1101-030-940602-1
We need to customer coordination

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…
Problem description
Explanation
High PDU Retransmission Rate
Transmission Bandwidth increment
High IP Path Delay Time
Transmission Bandwidth increment
High Uplink Power congestion
Uplink Call Admission Threshold change
High Downlink Power congestion
Downlink Call Admission Threshold change
High HSUPA User Congestion
Max HSUPA User Number increment
SCTP Link Congestion
Transmission Bandwidth increment

 Before WC List

 

 

 

 

Latest WC List

General worst NodeB shown in below..

MRK2503, MRK2508, MRK2800…
General worst NodeBGeneral worst NodeBcid:image020.jpg@01D126C7.7316B370

 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…
Problem description
Explanation
High PDU Retransmission Rate
Transmission Bandwidth increment
High IP Path Delay Time
Transmission Bandwidth increment
High Uplink Power congestion
Uplink Call Admission Threshold change
High Downlink Power congestion
Downlink Call Admission Threshold change
High HSUPA User Congestion
Max HSUPA User Number increment
SCTP Link Congestion
Transmission Bandwidth increment

 

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  1. August 10, 2018

    […] Please read also: WCDMA (3G) KPI Improvement Report […]

  2. August 29, 2018

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