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Paper Abstract and Keywords
Presentation 2026-03-04 13:00
Performance evaluation of ultra-low latency network L4S using FQ-CoDel
Takumi Ogura, Rikima Mitsuhashi, Sataru Sunahara, Katsuyoshi Iida, Yoshiaki Takai (Hokkaido Univ.) NS2025-280
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, L4S defined in RFC 9330, has gained attention as a means to realize ultra-low-latency networks. While there are many previous studies on L4S, most are limited to performance evaluations of existing TCP communication with L4S communication. Consequently, the performance of L4S in environments with numerous competing flows, such as real networks, has not been sufficiently verified. Therefore, this study implements L4S using FQ-CoDel as the AQM and conducts a fundamental performance evaluation. Specifically, it varies Classic and L4S communications to assess their impact on bottleneck queuing delay. In this experiment, we investigated the number of flows that satisfy the condition of “very low
queuing latency” in network environments with different RTTs.
Keyword (in Japanese) (See Japanese page) 
(in English) L4S / Congestion control / Low latency / AQM / FQ-CoDel / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 385, NS2025-280, pp. 351-356, March 2026.
Paper # NS2025-280 
Date of Issue 2026-02-25 (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 NS2025-280

Conference Information
Committee IN NS  
Conference Date 2026-03-04 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-Ken Shichoson Jichi Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2026-03-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance evaluation of ultra-low latency network L4S using FQ-CoDel 
Sub Title (in English)  
Keyword(1) L4S  
Keyword(2) Congestion control  
Keyword(3) Low latency  
Keyword(4) AQM  
Keyword(5) FQ-CoDel  
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1st Author's Name Takumi Ogura  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Rikima Mitsuhashi  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Sataru Sunahara  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
4th Author's Name Katsuyoshi Iida  
4th Author's Affiliation Hokkaido University (Hokkaido Univ.)
5th Author's Name Yoshiaki Takai  
5th Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Speaker Author-1 
Date Time 2026-03-04 13:00:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2025-280 
Volume (vol) vol.125 
Number (no) no.385 
Page pp.351-356 
#Pages 6 
Date of Issue 2026-02-25 (NS) 

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