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Paper Abstract and Keywords
Presentation 2025-05-15 15:35
[Invited Lecture] Scheduling of Multi-robot System for Deadlock Avoidance in Warehouse Transport
Shinya Yasuda, Sarin Kittisares (NEC), Yoshikazu Kobayashi (NAS), Taichi Kumagai, Hiroshi Yoshida (NEC) NS2025-18
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a scheduling technique to avoid deadlocks, which is a problem when planning routes for multiple transport robots in a warehouse. Assuming a grid-based managed warehouse area, we consider a system where robots reserve the grid they want to move to in advance, and if the reservation fails, they stop and wait to avoid collisions. In such cases, single-agent path planning is prone to deadlocks, leading to a decrease in transportation capacity. On the other hand, multi-agent path planning, which can achieve optimal solutions, has the challenge of high computational cost. Therefore, we define critical grids that contribute to the occurrence of deadlocks as nonstop areas. By dynamically extending the reservation range so that robots do not stop or wait within these areas, we demonstrate that the incidence of deadlocks can be significantly reduced.
Keyword (in Japanese) (See Japanese page) 
(in English) Deadlock avoidance / Path planning / Warehouse automation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 24, NS2025-18, pp. 12-15, May 2025.
Paper # NS2025-18 
Date of Issue 2025-05-08 (NS) 
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 NS2025-18

Conference Information
Committee NS  
Conference Date 2025-05-15 - 2025-05-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University + Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) High level protocol, Networking technologies (IP and high-layer routing/filtering, Multicast, Quality/Routing control), IP network application technologies (P2P, P4P, Overlay, SIP, NGN), Network system related technologies (System configuration, Interface, Architecture, Hardware/Software/Middleware), Security, Blockchain etc. 
Paper Information
Registration To NS 
Conference Code 2025-05-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Scheduling of Multi-robot System for Deadlock Avoidance in Warehouse Transport 
Sub Title (in English)  
Keyword(1) Deadlock avoidance  
Keyword(2) Path planning  
Keyword(3) Warehouse automation  
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1st Author's Name Shinya Yasuda  
1st Author's Affiliation NEC Corporation (NEC)
2nd Author's Name Sarin Kittisares  
2nd Author's Affiliation NEC Corporation (NEC)
3rd Author's Name Yoshikazu Kobayashi  
3rd Author's Affiliation NEC Aerospace Systems (NAS)
4th Author's Name Taichi Kumagai  
4th Author's Affiliation NEC Corporation (NEC)
5th Author's Name Hiroshi Yoshida  
5th Author's Affiliation NEC Corporation (NEC)
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Speaker Author-1 
Date Time 2025-05-15 15:35:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2025-18 
Volume (vol) vol.125 
Number (no) no.24 
Page pp.12-15 
#Pages 4 
Date of Issue 2025-05-08 (NS) 

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