1. Project hammer T00278 LTE DT Analysis Celcom CA Project 2017-04-25
© Ericsson AB 2016

2. T00278 CA-report – DT KPI overview – 4G
Celcom CA Project
T00278 CA-report – DT KPI overview – 4G
© Ericsson AB 2016

3. PROJECT BAU MODERNIZATION
CONTENTS
SINR Analysis
CSFB Call Setup Time Analysis

4. T00278_DT KPI—4G DT KPI lte sinr
Celcom CA Project
T00278_DT KPI—4G DT KPI lte sinr
Summary:
2 areas are identified with bad SINR issue, circled as the left.
Area1
Area2
EL30040 PA
Comments 1
Bad SINR due to poor coverage 2
EL30040
Area1
© Ericsson AB 2016

5. T00278_DT KPI—4G DT KPI lte sinr PA1
Celcom CA Project
T00278_DT KPI—4G DT KPI lte sinr PA1
Area1
SINR
DL THP
Area1
SINR Satellite view
EL30040
Area1
Area1
RSRP Satellite view
1200m
900m
Sector view EL30039_8_3
Area 1:
Analysis:
1. SINR is bad due to bad RSRP in area 1.
2.Average DL THP>7M of this area is acceptable and the subscriber experience won't be influenced.
3.Area 1 was covered by EL30039_ PAKA_8_3.The signal from EL30039_PAKA_8_3 was blocked by dense trees.
4.The Existing E-tilt of EL30039_PAKA_8_3 is 2,don’t suggest to up tilt of this cell
© Ericsson AB 2016

6. T00278_DT KPI—4G DT KPI lte sinr PA2
EL30040
Area2
Area2
Area2
SINR Satellite view
RSRP Satellite view
2680m
2560m
RSRP Satellite view
Area 1:
Analysis:
SINR is bad due to bad RSRP in area 2.
All cell are serving the target are with site lobe, no dominant cell are dedicated for target area.
Poor coverage of this area is due to long distance with EL30161_
TMPAKA (Height:44m) and EL30040_MJDPAKA(Height:36m).
4. DT SINR result matches with simulation, both of them are not good
Area2

7. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time
Celcom CA Project
T00278 CA SSO dt kpi—4G DT KPI A CSFB call setup time
Analysis:
There are 189 times CSFB, and 69.84% of samples CSFB Call Setup time is less than 6.5s.
57 times of CSFB Call Setup time are more than times of CSFB Call Setup time are more than 9s.
© Ericsson AB 2016

8. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #1
Celcom CA Project
T00278 CA SSO dt kpi—4G DT KPI A CSFB call setup time #1
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
0:47:09.704
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.294
RRCConnectionRelease
0:47:09.998
RRCConnectionRelease -> CM_SERVICE_REQUEST
1.421
CM_SERVICE_REQUEST
0:47:11.419
CM_SERVICE_REQUEST -> SETUP
11.405
SETUP
0:47:22.824
SETUP -> ALERTING
3.998
ALERTING
0:47:26.822
Total
17.118
Analysis:
1.Top 1 CSFB call take s from EXETENDED_SERVICE_REQUEST to ALERTING.
2.There are s from CM_SERVICE_REQUEST to SETUP which mainly caused long CSFB call setup time.
3. 5 times RRC_CONNECTION_REQUEST during the 11s is due to poor ECNO.
© Ericsson AB 2016

9. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #2
Celcom CA Project
T00278 CA SSO dt kpi—4G DT KPI A CSFB call setup time #2
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
0:50:29.507
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.197
RRCConnectionRelease
0:50:29.704
RRCConnectionRelease -> CM_SERVICE_REQUEST
0.807
CM_SERVICE_REQUEST
0:50:30.511
CM_SERVICE_REQUEST -> SETUP
6.103
SETUP
0:50:36.614
SETUP -> ALERTING
3.495
ALERTING
0:50:40.109
Total
10.602
Analysis:
1.Top 2 CSFB call take s from EXETENDED_SERVICE_REQUEST to ALERTING.
2.There are 6.103s from CM_SERVICE_REQUEST to SETUP which mainly caused long CSFB call setup time.
3.Poor ECNO caused long CSFB call setup time.
© Ericsson AB 2016

10. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #3
Celcom CA Project
T00278 CA SSO dt kpi—4G DT KPI A CSFB call setup time #3
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
2:53:04.297
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.292
RRCConnectionRelease
2:53:04.589
RRCConnectionRelease -> CM_SERVICE_REQUEST
1.005
CM_SERVICE_REQUEST
2:53:05.594
CM_SERVICE_REQUEST -> SETUP
4.503
SETUP
2:53:10.097
SETUP -> ALERTING
4.795
ALERTING
2:53:14.892
Total
10.595
Analysis:
1.Top 3 CSFB call take s from EXETENDED_SERVICE_REQUEST to ALERTING.
2.There are 4.795s during SETUP to ALERTING which mainly caused long CSFB call setup time.
3.During CALL PROCEDDING to ALERTING，there are many ACTIVE_SET_UPDATE . It was proved that unstable UMTS wireless environment.
4.Measurement_report displays poor RSCP and ECNO during the test.
© Ericsson AB 2016

11. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #4
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
1:33:57.421
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.195
RRCConnectionRelease
1:33:57.616
RRCConnectionRelease -> CM_SERVICE_REQUEST
0.403
CM_SERVICE_REQUEST
1:33:58.019
CM_SERVICE_REQUEST -> SETUP
5.504
SETUP
1:34:03.523
SETUP -> ALERTING
4.2
ALERTING
1:34:07.723
Total
10.302
Analysis:
1.Top 4 CSFB call take s from EXETENDED_SERVICE_REQUEST to ALERTING.
2.There are 5.504s from CM_SERVICE_REQUEST to SETUP which mainly caused long CSFB call setup time.
3.Poor RSCP&ECNO caused long CSFB call setup time.

12. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #5
Celcom CA Project
T00278 CA SSO dt kpi—4G DT KPI A CSFB call setup time #5
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
2:59:31.713
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.193
RRCConnectionRelease
2:59:31.906
RRCConnectionRelease -> CM_SERVICE_REQUEST
4.209
CM_SERVICE_REQUEST
2:59:36.115
CM_SERVICE_REQUEST -> SETUP
1.203
SETUP
2:59:37.318
SETUP -> ALERTING
4.103
ALERTING
2:59:41.421
Total
9.708
Analysis:
1.Top 5 CSFB call take 9.708s from EXETENDED_SERVICE_REQUEST to ALERTING.
2.There are 4.209s from RRCConnectionRelease to CM_SERVICE_REQUEST which mainly caused long CSFB call setup time.
3. RRCConnectionRelease message displays that Utra-FDD is 3012 but Measurement Report message shows UE resident in PSC341(EW30161_1_6 UARFCN:10762, EW30161_2_6 UARFCN:10737).It was doubted that UE take much times for searching suitable cell. During the process , there are many system message.
© Ericsson AB 2016

13. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #6
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
0:53:57.569
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.297
RRCConnectionRelease
0:53:57.866
RRCConnectionRelease -> CM_SERVICE_REQUEST
2.006
CM_SERVICE_REQUEST
0:53:59.872
CM_SERVICE_REQUEST -> SETUP
2.9
SETUP
0:54:02.772
SETUP -> ALERTING
4.296
ALERTING
0:54:07.068
Total
9.499
RRCConnectionRelease
4.504 s
RRC_CONNECTION_SETUP_COMPLETE
Analysis:
1.Top 6 CSFB call take 9.499s from EXETENDED_SERVICE_REQUEST to ALERTING.
2. The main reason is that It takes 4.504s from 4G RRCConnectionRelease fall back to 3G RRC_CONNECTION_SETUP_COMPLETE, during the fallback time.

14. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #7
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
0:59:03.641
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.298
RRCConnectionRelease
0:59:03.939
RRCConnectionRelease -> CM_SERVICE_REQUEST
0.204
CM_SERVICE_REQUEST
0:59:04.143
CM_SERVICE_REQUEST -> SETUP
5.201
SETUP
0:59:09.344
SETUP -> ALERTING
3.696
ALERTING
0:59:13.040
Total
9.399
RRCConnectionRelease
5.007 s
RRC_CONNECTION_SETUP_COMPLETE
Analysis:
1.Top 7 CSFB call take 9.399s from EXETENDED_SERVICE_REQUEST to ALERTING.
2. The main reason is that It takes 5.007s from 4G RRCConnectionRelease fall back to 3G RRC_CONNECTION_SETUP_COMPLETE, during the fallback time.

15. T00278 CA SSO dt kpi—4G DT KPI A.19.4.10.19 CSFB call setup time #8
Signal Point
Time
Sample Latency(s)
EXTENDED_SERVICE_REQUEST
0:52:42.103
EXTENDED_SERVICE_REQUEST -> RRCConnectionRelease
0.313
RRCConnectionRelease
0:52:42.416
RRCConnectionRelease -> CM_SERVICE_REQUEST
0.506
CM_SERVICE_REQUEST
0:52:42.922
CM_SERVICE_REQUEST -> SETUP
3.6
SETUP
0:52:46.522
SETUP -> ALERTING
4.599
ALERTING
0:52:51.121
Total
9.018
RRCConnectionRelease
3.705s
RRC_CONNECTION_SETUP_COMPLETE
Analysis:
1.Top 8 CSFB call take 9.018s from EXETENDED_SERVICE_REQUEST to ALERTING.
2. The one reason is that It takes 3.705s from 4G RRCConnectionRelease fall back to 3G RRC_CONNECTION_SETUP_COMPLETE, during the fallback time. Another reason is that It takes 4.599s to wait responding from CN.

16. Celcom CA Project
© Ericsson AB 2016