研究目的
To analyze the faults due to passive elements at the last mile of the GPON FTTH network by monitoring optical transceiver performance and correlating it with fault data.
研究成果
The aerial FDP has the highest fault rate, with over 65% of faults due to optical fibers and the rest from connectors. Three patterns of ONURx degradation before failure were identified: sudden disconnection, fluctuation, and gradual degradation. This information is crucial for developing predictive maintenance strategies for passive elements in FTTH networks.
研究不足
The study is limited to a specific legacy area in Malaysia with 300 subscribers over four months, which may not be representative of all FTTH networks. The reliance on GPON EMS for monitoring and manual analysis of trouble tickets could introduce biases or miss some faults.
1：Experimental Design and Method Selection:
The study monitored optical transceiver performance (OLTTx and ONURx) hourly for four months using a GPON EMS system to correlate with passive element faults in the last mile of FTTH networks.
2：Sample Selection and Data Sources:
300 GPON FTTH subscribers in a legacy area in Malaysia were selected, with FDP types including aerial (58%), building (20%), street cabinet (18%), and underground (2%). Data on optical power and fault tickets were collected.
3：List of Experimental Equipment and Materials:
GPON EMS system for monitoring, optical fibers, connectors, and various FDP types.
4：Experimental Procedures and Operational Workflow:
Hourly monitoring of OLTTx and ONURx via GPON EMS, analysis of trouble tickets one month after monitoring began, focusing on passive element faults.
5：Data Analysis Methods:
Optical power data was plotted against fault occurrences, and fault rates were calculated for different FDP types and passive elements.
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