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Paper Abstract and Keywords
Presentation 2025-12-19 10:20
[Invited Talk] Assessing and Fortifying Communication Networks against Earthquake Risks Using Conduit Damage Prediction Techniques
Takeru Inoue (Univ. of Yamanashi), Kengo Nakamura, Masaaki Nishino, Nana Matsuda, Akira Ito (NTT) NS2025-176 RCS2025-201
Abstract (in Japanese) (See Japanese page) 
(in English) This talk introduces a novel approach for assessing and fortifying communication networks against earthquake risks, based on an interdisciplinary framework combining civil engineering and network engineering. Conventional studies have often separately treated the physical vulnerability of communication facilities (e.g., underground conduits) and the connectivity of the entire network. First, we establish a model to predict the damage probability of underground conduits using machine learning trained on tens of thousands of facility inspection records from past major earthquakes. Second, based on these predictions, we propose a reliability evaluation method using Binary Decision Diagrams (BDD) to efficiently and rigorously calculate the connectivity of the entire network. We demonstrate that conventional methods, which disregard facility characteristics, may significantly misestimate risks. Furthermore, we describe an algorithm that derives an optimal plan for upgrading aging conduits to earthquake-resistant ones to maximize network reliability under budget constraints.
Keyword (in Japanese) (See Japanese page) 
(in English) Communication Networks / Natural Disasters / Damage Assessment / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 301, NS2025-176, pp. 140-145, Dec. 2025.
Paper # NS2025-176 
Date of Issue 2025-12-11 (NS, RCS) 
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 NS2025-176 RCS2025-201

Conference Information
Committee NS RCS  
Conference Date 2025-12-18 - 2025-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukui International Activities Plaza + Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. 
Paper Information
Registration To NS 
Conference Code 2025-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Assessing and Fortifying Communication Networks against Earthquake Risks Using Conduit Damage Prediction Techniques 
Sub Title (in English)  
Keyword(1) Communication Networks  
Keyword(2) Natural Disasters  
Keyword(3) Damage Assessment  
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1st Author's Name Takeru Inoue  
1st Author's Affiliation University of Yamanashi (Univ. of Yamanashi)
2nd Author's Name Kengo Nakamura  
2nd Author's Affiliation NTT (NTT)
3rd Author's Name Masaaki Nishino  
3rd Author's Affiliation NTT (NTT)
4th Author's Name Nana Matsuda  
4th Author's Affiliation NTT (NTT)
5th Author's Name Akira Ito  
5th Author's Affiliation NTT (NTT)
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Speaker Author-1 
Date Time 2025-12-19 10:20:00 
Presentation Time 45 minutes 
Registration for NS 
Paper # NS2025-176, RCS2025-201 
Volume (vol) vol.125 
Number (no) no.301(NS), no.302(RCS) 
Page pp.140-145(NS), pp.85-90(RCS) 
#Pages 6 
Date of Issue 2025-12-11 (NS, RCS) 

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