Up to 2700 km Field Trial of Novel Cross Domain Protection Mechanism Against Multi-Point Failure in Long Distance Network Based on Segmented Dual-Node Interconnection
With the rapid deployment of 5G networks and the increasing demand for high-reliability services across industries such as smart grids, healthcare, and unmanned aerial vehicle (UAV) trajectory tracking, the need for robust and efficient transport network protection mechanisms has become critical. Tr...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/12/4/327 |
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| Summary: | With the rapid deployment of 5G networks and the increasing demand for high-reliability services across industries such as smart grids, healthcare, and unmanned aerial vehicle (UAV) trajectory tracking, the need for robust and efficient transport network protection mechanisms has become critical. Traditional protection schemes, such as optical layer and electrical layer linear protection, face significant challenges in handling multi-point failures and achieving fault isolation in cross domain scenarios. To address these limitations, this paper proposes a novel cross-domain protection mechanism based on segmented Dual-Node Interconnection (DNI). By constructing a DNI topology between adjacent domains and leveraging a three-point bridge mechanism, the proposed solution enables efficient fault isolation and rapid service recovery in the event of multi-point failures. The proposed protection mechanism also introduces periodic status interaction messages between nodes, ensuring coordinated protection switching across domains. We conducted the first field trial to validate the proposed protection mechanism in a multi-domain, multi-vendor network spanning over 2700 km. The results demonstrate that the proposed protection scheme achieves protection switching times of less than 50 ms under various fault scenarios, including intra-domain and inter-domain failures, significantly outperforming traditional linear protection methods. This work represents a significant advancement in cross domain protection, offering a robust solution for enhancing the reliability of long-distance transport networks. |
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| ISSN: | 2304-6732 |