1. Celcom LTE CA Project_OSS
celcom LTE FDD CA project
PC_CA_ERE_06 oss KPI justification - Appendix
© Ericsson AB 2017

2. Celcom LTE CA Project_OSS
4G OSS Justification
© Ericsson AB 2017

3. Celcom LTE CA Project_OSS
4G oss kpi justification
© Ericsson AB 2017

4. Celcom LTE CA Project_OSS
Data CSSR & RRC CSSR & RRC Service & erab CSsr
Analysis:
The CSSR for Data ,RRC, and RRC service of the neighbor sites are 99.83%, 99.92%, 99.94% which has a slight degradation compare with the baseline 99.84%, 99.95%, 99.97%.
The degradation is mainly cause by the adjusting of qrxlevmin (from -120 to -124) which aiming to keep more users on 4G, the subscribe at the cell edge will stick to LTE with low poor RF condition while the 4G total volume increased as a result, it’s an exceptional decrease just as below summary in mail.
Baseline
qrxlevmin
Result
© Ericsson AB 2017

5. Celcom LTE CA Project_OSS
eRAB Drop Call Rate
Analysis:
The eRAB DCR for the neighbor site is 0.17% which is worse than baseline 0.11% was mainly due to the CA layer management parameters changed on whole OKV.
CA layer management parameters was aiming to keep more users on 4G, which means the subscribe in cell edge will stick to LTE with low poor RF condition while the 4G total volume increased as a result, it’s an exceptional decrease just as below summary in mail.
Baseline
CA layer management parameters change
Result
Result
© Ericsson AB 2017

6. Celcom LTE CA Project_OSS
UL Packet Loss Rate
Analysis:
The UL Packet Loss Rate for the neighbor site is 0.16% which is a litter worse than baseline(0%).
UL Packet Loss Rate increase since feature TCPO activated. Feature TCPO will impact on counter pmpdcpPktLostUI shows in Alex. The TCP Optimization feature is useful to provide a low queuing delay, while maintaining high link utilization and thereby improving the perceived end-user performance in terms of system responsiveness without sacrificing throughput. The feature is also capable of maintaining a more stable cell throughput under load, and will benefit the DL packet loss as below;
UL Package Loss Rate=100*[pmpdcpPktLostUI/(pmpdcpPktLostUI+pmpdcpPktReceivedUI)]
Feature TCPO Activated
Result
Baseline
© Ericsson AB 2017

7. Celcom LTE CA Project_OSS
IRATHO Success Rate
Analysis:
The IRAT Success Rate is 95.33% for neighbor sites which is a little worse than baseline 97.19% was mainly due to the CA layer management parameters changed on whole OKV.
The decreasing B2 and A2&Timer adjustment were aiming to keep more users on 4G, it’s harder to transfer to WCDMA for UE in cell edge than before, which means the subscribe will stick to LTE with low poor RF condition while the 4G total volume increased as a result, it’s an exceptional decrease just as below summary in mail. B2
A2&Timer
Baseline
Result
© Ericsson AB 2017

8. Celcom LTE CA Project_OSS
Voice Traffic (LTE+3G+2G)
Analysis:
The Voice Traffic (LTE+3G+2G) for the neighbor site is which is a little lower than baseline
More users have more activities on data instead of voice. So we can see that data traffic increased a lot through below picture.
Baseline
Result
© Ericsson AB 2017

9. Celcom LTE CA Project_OSS
CSFB Setup SR(%)
Analysis:
The CSFB Setup SR is 97.72% for the neighbor site which is worse than baseline % ,it was mainly caused by the co-site of EL30007 which exists Sync Frequency PDV Problem, and the alarm recover after May 3th.the Kpi is also recover after that.
Baseline
Result
CA On Air
© Ericsson AB 2017

10. Celcom LTE CA Project_OSS
© Ericsson AB 2017