Adaptive Flow Control Mechanism for Optical Switching Data Center Networks

doi:10.1109/JLT.2025.3586903

	Adaptive Flow Control Mechanism for Optical Switching Data Center Networks
	Yang, Changsheng 1; Xue, Xuwei 1; Guo, Bingli 1; Qiu, Zihan 1; Li, Wenzhe 2; Shen, Shikui 3; Guo, Yuanzhi 1; Wu, Xianchen 1; Yu, Guo 1; Yuan, Guojun 2; Wei, Buzheng 3; Yang, Hui 1; Li, Xiao 1; Huang, Shanguo
	2025-09-01
发表期刊	JOURNAL OF LIGHTWAVE TECHNOLOGY
ISSN	0733-8724
卷号	43 期号:17 页码:8245-8253
摘要	Optical switching is anticipated to be an alternative to electrical switching in Data Center Networks (DCNs), as it can provide higher bandwidth at a relatively lower cost and energy consumption. However, deploying optical switching systems remains a significant challenge due to the lack of an adaptive flow control (FC) mechanism to provide elastic bandwidth to cope with traffic bursty and complexity. Implementing adaptive FC requires addressing two important technical challenges, including high-precision time synchronization among network nodes and low-latency scheduling for dynamic time-slot allocation. We have designed a high-precision time synchronization mechanism that enables nanosecond rapid optical switching control. Additionally, we proposed a low-latency scheduling strategy to facilitate the dynamic time-slot allocation while effectively eliminating packet contention. Experimental results demonstrate that the proposed adaptive FC mechanism has achieved zero packet loss and zero packet error rates across various bursty traffic patterns, significantly outperforming the fixed time-slot method with a packet loss rate of 61.2%. Additionally, the system has achieved a very low synchronization offset of 1.65 ns, an extremely low timer jitter (sigma = 11.06 ps), and no observed drift during long-term operations. Furthermore, the proposed scheduling mechanism in our system completely avoids optical packet contention and reduces control time to 30.72 ns, representing a tenfold reduction compared to the typical 'Request-Grant' (350.72 ns) approach.
关键词	Optical switches Optical packet switching Synchronization Optical buffering Adaptive optics Resource management Adaptive systems Optical fibers Dynamic scheduling Delays Adaptive flow control data center network optical switching network packet contention resolution
DOI	10.1109/JLT.2025.3586903
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2024YFB2908303] ; National Natural Science Foundation of China[62220106002] ; National Natural Science Foundation of China[62125103] ; National Natural Science Foundation of China[62171059] ; National Natural Science Foundation of China[62401082] ; BUPT-China Unicom Joint Innovation Center ; BUPT innovation and entrepreneurship support program[2025-YC-A022]
WOS研究方向	Engineering ; Optics ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Optics ; Telecommunications
WOS记录号	WOS:001553665800008
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/41789
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Xue, Xuwei
作者单位	1.Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China 3.China Unicom Res Inst, Beijing 100176, Peoples R China
推荐引用方式 GB/T 7714	Yang, Changsheng,Xue, Xuwei,Guo, Bingli,et al. Adaptive Flow Control Mechanism for Optical Switching Data Center Networks[J]. JOURNAL OF LIGHTWAVE TECHNOLOGY,2025,43(17):8245-8253.
APA	Yang, Changsheng.,Xue, Xuwei.,Guo, Bingli.,Qiu, Zihan.,Li, Wenzhe.,...&Huang, Shanguo.(2025).Adaptive Flow Control Mechanism for Optical Switching Data Center Networks.JOURNAL OF LIGHTWAVE TECHNOLOGY,43(17),8245-8253.
MLA	Yang, Changsheng,et al."Adaptive Flow Control Mechanism for Optical Switching Data Center Networks".JOURNAL OF LIGHTWAVE TECHNOLOGY 43.17(2025):8245-8253.