HFC network optimization and PNM in the field - Proactive Service
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The document details an analysis of the performance of HFC node si-064, highlighting significant noise interference affecting service segments, particularly segment B, from 5pm to 7am. Following cable repairs, improvements were observed, with the node successfully transitioning to 64-QAM modulation and marked enhancements in metrics such as MER and NPI. The analysis underscores the importance of proactive network maintenance to address technical issues and improve service quality.
HFC network optimization and PNM in the field - Proactive Service
- 1. Engineering Services Raising the performance Giovanni Ferrenan
- 2. © 2017 HFC/FO UNIT - Giovanni Ferrenan 2 Executive summary HFC Node: SI-064 Segments in service: A, B, C. Analysis: 26-May-2017 Initial MER Avg.: 30.05dB Initial NPI Avg.: 45/100 High noise from 5.30pm to 7am. KPIs after a week of monitoring 02-Jun-2017 NPI improved from 57 to 89 MER reached to 39.7dB
- 3. © 2017 HFC/FO UNIT - Giovanni Ferrenan 3 Node SI-064 running in low-modulation (32QAM) due to B segment. SSM dashboard - Glimpse of the three segments: A, B, C ---- MER ---- MER No Ec ---- NOISE C SEGMENT: A SEGMENT: B SEGMENT: Severe impact on daily performance
- 4. © 2017 HFC/FO UNIT - Giovanni Ferrenan 4 Affected segment: SI-064-B. Affected time span: 5pm – 07am MACtrak View Additional detail High noise producing low MER
- 5. © 2017 HFC/FO UNIT - Giovanni Ferrenan 5 After analysis: the area to find issues was delimited A03 Av. Pezet Av.Romanet P 2 P 4 1073 STB + CM Lobby ACI TAP 0303 RG11 Cable QAM Leak Cochera Piso 1 Piso 4
- 6. © 2017 HFC/FO UNIT - Giovanni Ferrenan 6 QAM Egress confirmation QAM Egress detected and confirmed with the instruments. The leaking was found under garaje.
- 7. © 2017 HFC/FO UNIT - Giovanni Ferrenan 7 It was found different damages on one cable
- 8. Results from the same day after repairing 01/06/2017
- 9. © 2017 HFC/FO UNIT - Giovanni Ferrenan 9 Performance after cable replacement – Now the Node is running on 64QAM SSM Timeline: Performance at glance • Better node’s performance. • Saving cost / CMTS. • More bandwith with the Same Infrastructure. Reached Goals MACTRAK: Technical DrillDown
- 10. © 2017 HFC/FO UNIT - Giovanni Ferrenan 10 Thanks!!!
- 11. PNM - Proactive Network Maintenance SB-036 Giovanni Ferrenan
- 12. © 2017 HFC/FO UNIT - Giovanni Ferrenan 12 Nodo SBR036 – 399 CM 51 CM - two Groups: A (34 modems) y B (17 modems)
- 13. © 2017 HFC/FO UNIT - Giovanni Ferrenan 13 BSS shows alarmed Nodes –> Node SB036 BSSPNM
- 14. © 2017 HFC/FO UNIT - Giovanni Ferrenan 14 Localization of the possible issue Common pointFailed Element Affected CM
- 15. © 2017 HFC/FO UNIT - Giovanni Ferrenan 15 Findings and Fixing: broken pin acting as an antenna causing noise ingress Pin removed to fix subscriber issues
- 16. © 2017 HFC/FO UNIT - Giovanni Ferrenan 16 No more groups => No more affected CM
- 17. © 2017 HFC/FO UNIT - Giovanni Ferrenan 17 PathTrak and BSS Verification Indicadores de Afectación Lineal Customer’s BSSPathtrak
- 18. © 2017 HFC/FO UNIT - Giovanni Ferrenan 18 Thanks!!!