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Paper Abstract and Keywords
Presentation 2026-03-04 15:00
Predictive Self-Healing Restoration in Optical Networks: A Quantitative Comparison with Reactive and Protection-Based Schemes
Sugang Xu, Yusuke Hirota, Taiga Suzuki, Masaki Shiraiwa, Yoshinari Awaji (NICT) PN2025-73
Abstract (in Japanese) (See Japanese page) 
(in English) This report presents an analytical framework to quantify the benefits of Predictive (Self-Healing) Restoration in optical networks. We model and compare four representative schemes: (A) manual repair and service re-creation after failures, (B) conventional reactive restoration triggered after failure detection, (C) conventional 1+1 protection with fully redundant resources, and (D) predictive self-healing restoration based on failure anticipation and make-before-break reconfiguration. Two key performance metrics are analyzed: Expected Annual Downtime and Expected Annual Total Cost, which jointly capture service availability, operational expenditure. We derive closed-form expressions for downtime and cost under each scheme as functions of failure rate, protection overhead, and proactive path availability. The analysis reveals the fundamental tradeoffs among the four schemes and identifies operating regions where predictive self-healing restoration outperforms both reactive restoration and 1+1 protection. In particular, predictive restoration significantly reduces downtime without incurring the persistent capacity overhead of protection schemes, offering a favorable balance between availability and cost.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical Network Resilience / Prediction / Self-Healing Restoration / Availability / Cost / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 372, PN2025-73, pp. 156-161, March 2026.
Paper # PN2025-73 
Date of Issue 2026-02-23 (PN) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF PN2025-73

Conference Information
Committee PN  
Conference Date 2026-03-02 - 2026-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To PN 
Conference Code 2026-03-PN 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Predictive Self-Healing Restoration in Optical Networks: A Quantitative Comparison with Reactive and Protection-Based Schemes 
Sub Title (in English)  
Keyword(1) Optical Network Resilience  
Keyword(2) Prediction  
Keyword(3) Self-Healing Restoration  
Keyword(4) Availability  
Keyword(5) Cost  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Sugang Xu  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Yusuke Hirota  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Taiga Suzuki  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Masaki Shiraiwa  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Yoshinari Awaji  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2026-03-04 15:00:00 
Presentation Time 25 minutes 
Registration for PN 
Paper # PN2025-73 
Volume (vol) vol.125 
Number (no) no.372 
Page pp.156-161 
#Pages 6 
Date of Issue 2026-02-23 (PN) 

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