Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking

Chenxi Ling; Zhuyun Qi; Shuangping Zhan; Yan Liu; Xingbo Feng; Ruide Cao; Jingbin Feng; Jiashuo Lin; Jian Cheng; Yi Wang

doi:10.1109/IWQoS65803.2025.11143518

Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking

Chenxi Ling
, Zhuyun Qi^*
, Shuangping Zhan
, Yan Liu
, Xingbo Feng
, Ruide Cao
, Jingbin Feng
, Jiashuo Lin
, Jian Cheng
, Yi Wang^*

^*Corresponding author for this work

Department of Computer Science

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

While Multi-CQF enables deterministic networking over wide-area networks(WANs) by decoupling transmission and reception, it introduces significant queuing delays. We propose Effective Phase Alignment (EPA), which mitigates queuing delay by adjusting transmission offsets to align the effective phase, defined as the phase difference between the sending and receiving windows. EPA lowers the upper bound of average queuing delay from 2T to 1.5T, and achieves T under perfect alignment. © 2025 IEEE.

Original language	English
Title of host publication	2025 IEEE/ACM 33rd International Symposium on Quality of Service (IWQoS)
Publisher	IEEE
Number of pages	2
ISBN (Electronic)	979-8-3315-4940-4
DOIs	https://doi.org/10.1109/IWQoS65803.2025.11143518
Publication status	Published - 2025
Event	33rd IEEE/ACM International Symposium on Quality of Service (IWQoS 2025) - Gold Coast, Australia Duration: 2 Jul 2025 → 4 Jul 2025 https://iwqos2025.ieee-iwqos.org/

Publication series

Name	IEEE International Workshop on Quality of Service, IWQoS
ISSN (Print)	1548-615X

Conference

Conference	33rd IEEE/ACM International Symposium on Quality of Service (IWQoS 2025)
Abbreviated title	IEEE/ACM IWQoS 2025
Place	Australia
City	Gold Coast
Period	2/07/25 → 4/07/25
Internet address	https://iwqos2025.ieee-iwqos.org/

Bibliographical note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Funding

This work is supported by the Guangdong High-Level Talents Special Support Program (2021TX05X205), the Guangdong Basic and Applied Basic Research Foundation (2024A0101010001), Pengcheng Laboratory The Major Key Project of PCL (PCL2023A03).

Research Keywords

Alignment
Cyclic Queuing and Forwarding
Deterministic Networking
Queuing Delay

Access Output

10.1109/IWQoS65803.2025.11143518

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Cite this

Ling, C., Qi, Z., Zhan, S., Liu, Y., Feng, X., Cao, R., Feng, J., Lin, J., Cheng, J., & Wang, Y. (2025). Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking. In 2025 IEEE/ACM 33rd International Symposium on Quality of Service (IWQoS) (IEEE International Workshop on Quality of Service, IWQoS). IEEE. https://doi.org/10.1109/IWQoS65803.2025.11143518

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title = "Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking",

abstract = "While Multi-CQF enables deterministic networking over wide-area networks(WANs) by decoupling transmission and reception, it introduces significant queuing delays. We propose Effective Phase Alignment (EPA), which mitigates queuing delay by adjusting transmission offsets to align the effective phase, defined as the phase difference between the sending and receiving windows. EPA lowers the upper bound of average queuing delay from 2T to 1.5T, and achieves T under perfect alignment. {\textcopyright} 2025 IEEE.",

keywords = "Alignment, Cyclic Queuing and Forwarding, Deterministic Networking, Queuing Delay",

author = "Chenxi Ling and Zhuyun Qi and Shuangping Zhan and Yan Liu and Xingbo Feng and Ruide Cao and Jingbin Feng and Jiashuo Lin and Jian Cheng and Yi Wang",

note = "Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).; 33rd IEEE/ACM International Symposium on Quality of Service (IWQoS 2025), IEEE/ACM IWQoS 2025 ; Conference date: 02-07-2025 Through 04-07-2025",

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doi = "10.1109/IWQoS65803.2025.11143518",

language = "English",

series = "IEEE International Workshop on Quality of Service, IWQoS",

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}

Ling, C, Qi, Z, Zhan, S, Liu, Y, Feng, X, Cao, R, Feng, J, Lin, J, Cheng, J & Wang, Y 2025, Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking. in 2025 IEEE/ACM 33rd International Symposium on Quality of Service (IWQoS). IEEE International Workshop on Quality of Service, IWQoS, IEEE, 33rd IEEE/ACM International Symposium on Quality of Service (IWQoS 2025), Gold Coast, Australia, 2/07/25. https://doi.org/10.1109/IWQoS65803.2025.11143518

Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking. / Ling, Chenxi; Qi, Zhuyun; Zhan, Shuangping et al.
2025 IEEE/ACM 33rd International Symposium on Quality of Service (IWQoS). IEEE, 2025. (IEEE International Workshop on Quality of Service, IWQoS).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Effective Phase Alignment

T2 - 33rd IEEE/ACM International Symposium on Quality of Service (IWQoS 2025)

AU - Ling, Chenxi

AU - Qi, Zhuyun

AU - Zhan, Shuangping

AU - Liu, Yan

AU - Feng, Xingbo

AU - Cao, Ruide

AU - Feng, Jingbin

AU - Lin, Jiashuo

AU - Cheng, Jian

AU - Wang, Yi

N1 - Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

PY - 2025

Y1 - 2025

N2 - While Multi-CQF enables deterministic networking over wide-area networks(WANs) by decoupling transmission and reception, it introduces significant queuing delays. We propose Effective Phase Alignment (EPA), which mitigates queuing delay by adjusting transmission offsets to align the effective phase, defined as the phase difference between the sending and receiving windows. EPA lowers the upper bound of average queuing delay from 2T to 1.5T, and achieves T under perfect alignment. © 2025 IEEE.

AB - While Multi-CQF enables deterministic networking over wide-area networks(WANs) by decoupling transmission and reception, it introduces significant queuing delays. We propose Effective Phase Alignment (EPA), which mitigates queuing delay by adjusting transmission offsets to align the effective phase, defined as the phase difference between the sending and receiving windows. EPA lowers the upper bound of average queuing delay from 2T to 1.5T, and achieves T under perfect alignment. © 2025 IEEE.

KW - Alignment

KW - Cyclic Queuing and Forwarding

KW - Deterministic Networking

KW - Queuing Delay

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U2 - 10.1109/IWQoS65803.2025.11143518

DO - 10.1109/IWQoS65803.2025.11143518

M3 - RGC 32 - Refereed conference paper (with host publication)

T3 - IEEE International Workshop on Quality of Service, IWQoS

BT - 2025 IEEE/ACM 33rd International Symposium on Quality of Service (IWQoS)

PB - IEEE

Y2 - 2 July 2025 through 4 July 2025

ER -

Effective Phase Alignment: Reducing Queuing Delay in Multi-CQF for Deterministic Networking

Abstract

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Bibliographical note

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Research Keywords

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