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Paper Abstract and Keywords
Presentation 2026-03-04 10:20
Implementation and evaluation of in-Network Congestion Control nodes using eBPF
Yuki Tabuchi, Go Hasegawa (Tohoku Univ.) NS2025-233
Abstract (in Japanese) (See Japanese page) 
(in English) Our research group has been investigating In-Network Congestion Control (NCC) as a novel mechanism to handle the increasing diversity and complexity of the Internet. Unlike conventional congestion control based on the end-to-end principle, NCC deploys control nodes within the network to split feedback loops between sending and receiving terminals, enabling congestion control tailored to specific network characteristics. However, a significant challenge remains: excessive data accumulation at NCC nodes caused by mismatched data transfer rates across different feedback loops. In this report, we propose a data transfer method that leverages eBPF to complete the data relaying process entirely within the kernel space of the NCC node. The proposed method is designed to achieve high throughput, low CPU overhead, and low latency without the need for manual parameter tuning, which is often required in conventional user-space relaying. Experimental results demonstrate that the proposed method maintains or exceeds the throughput of existing approaches while reducing CPU utilization and queuing delay, proving its effectiveness in addressing the data accumulation problem in NCC nodes.
Keyword (in Japanese) (See Japanese page) 
(in English) Congestion Control / Transmission Control Protocol / In-Network Control / Throughput Control / Extended Berkeley Packet Filter / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 385, NS2025-233, pp. 72-77, March 2026.
Paper # NS2025-233 
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 NS2025-233

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) Implementation and evaluation of in-Network Congestion Control nodes using eBPF 
Sub Title (in English)  
Keyword(1) Congestion Control  
Keyword(2) Transmission Control Protocol  
Keyword(3) In-Network Control  
Keyword(4) Throughput Control  
Keyword(5) Extended Berkeley Packet Filter  
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1st Author's Name Yuki Tabuchi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Go Hasegawa  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2026-03-04 10:20:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2025-233 
Volume (vol) vol.125 
Number (no) no.385 
Page pp.72-77 
#Pages 6 
Date of Issue 2026-02-25 (NS) 

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