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Paper Abstract and Keywords
Presentation 2026-03-04 17:15
Constraint Graph based Detour Routing Method for 2-Layer Comb-shaped Bottleneck Routing Problem
Ryo Takata, Kunihiro Fujiyoshi (TUAT) VLD2025-84 HWS2025-80 ICD2025-95
Abstract (in Japanese) (See Japanese page) 
(in English) The "bottleneck routing problem," which focuses on reducing the height of a layout by relaxing VH-constraints near regions that become bottlenecks, was proposed by Taniguchi.
In this paper, we propose a constraint graph based routing method for the “two-layer comb-shaped bottleneck routing problem” where terminals are located on both the top and bottom boundary, but no terminal pairs share a column.
The objective of the problem is to minimize the height of the bottleneck region, allowing the routing to take a detour.
The effectiveness of our proposed method was confirmed by experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) Channel Routing / Bottleneck Routing / Detour Routing / Constraint Graph / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 382, VLD2025-84, pp. 48-53, March 2026.
Paper # VLD2025-84 
Date of Issue 2026-02-25 (VLD, HWS, ICD) 
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 VLD2025-84 HWS2025-80 ICD2025-95

Conference Information
Committee ICD HWS VLD  
Conference Date 2026-03-04 - 2026-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To VLD 
Conference Code 2026-03-ICD-HWS-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Constraint Graph based Detour Routing Method for 2-Layer Comb-shaped Bottleneck Routing Problem 
Sub Title (in English)  
Keyword(1) Channel Routing  
Keyword(2) Bottleneck Routing  
Keyword(3) Detour Routing  
Keyword(4) Constraint Graph  
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1st Author's Name Ryo Takata  
1st Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
2nd Author's Name Kunihiro Fujiyoshi  
2nd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
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Speaker Author-1 
Date Time 2026-03-04 17:15:00 
Presentation Time 25 minutes 
Registration for VLD 
Paper # VLD2025-84, HWS2025-80, ICD2025-95 
Volume (vol) vol.125 
Number (no) no.382(VLD), no.383(HWS), no.384(ICD) 
Page pp.48-53 
#Pages 6 
Date of Issue 2026-02-25 (VLD, HWS, ICD) 

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