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Tsinghua Science and Technology 2020, 25(1): 81-92 https://doi.org/10.26599/TST.2018.9010105
Open Access | Issue | Published: 22 July 2019

Design and Optimization of VLC Enabled Data Center Network

Show Author's Information Yudong Qin,  Deke Guo( ),  Xu Lin,  Geyao Cheng
Science and Technology on Information Systems Engineering Laboratory, National University of Defense Technology, Changsha 410073, China.
School of Computer Science and Technology, Xidian University, Xi’an 710000, China.
Keywords:
Data Center Network (DCN), Visible Light Communication (VLC), topology design
Cite this article:
Qin Y, Guo D, Lin X, et al. Design and Optimization of VLC Enabled Data Center Network. Tsinghua Science and Technology, 2020, 25(1): 81-92. https://doi.org/10.26599/TST.2018.9010105
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Abstract Full text About this article

Visible-Light Communication (VLC) has the potential to provide dense and fast connectivity at low cost. In this paper we propose SFNet, a novel VLC-enabled hybrid data center network that extends the design of wireless Data Center Networks (DCNs) into three further dimensions: (1) fully wireless at the inter-rack level; (2) no need for a centralized control mechanism on wireless links; and (3) no need for any infrastructure-level alterations to data centers. Previous proposals typically cannot realize these three rationales simultaneously. To achieve this vision, the proposed SFNet augments fat-tree by organizing all racks into a wireless small-world network via VLC links. The use of VLC links eliminates hierarchical switches and cables in the wireless network, and thus reduces hardware investment and maintenance costs. To fully exploit the benefits of the topology of SFNet, we further propose its topology design and optimization method, routing scheme, and online flow scheduling algorithm. Comprehensive experiments indicate that SFNet exhibits good topological properties and network performance.


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About this article

Design and Optimization of VLC Enabled Data Center Network

Show Author's information Yudong Qin, Deke Guo( ), Xu Lin, Geyao Cheng
Science and Technology on Information Systems Engineering Laboratory, National University of Defense Technology, Changsha 410073, China.
School of Computer Science and Technology, Xidian University, Xi’an 710000, China.

Abstract

Visible-Light Communication (VLC) has the potential to provide dense and fast connectivity at low cost. In this paper we propose SFNet, a novel VLC-enabled hybrid data center network that extends the design of wireless Data Center Networks (DCNs) into three further dimensions: (1) fully wireless at the inter-rack level; (2) no need for a centralized control mechanism on wireless links; and (3) no need for any infrastructure-level alterations to data centers. Previous proposals typically cannot realize these three rationales simultaneously. To achieve this vision, the proposed SFNet augments fat-tree by organizing all racks into a wireless small-world network via VLC links. The use of VLC links eliminates hierarchical switches and cables in the wireless network, and thus reduces hardware investment and maintenance costs. To fully exploit the benefits of the topology of SFNet, we further propose its topology design and optimization method, routing scheme, and online flow scheduling algorithm. Comprehensive experiments indicate that SFNet exhibits good topological properties and network performance.

Keywords: Data Center Network (DCN), Visible Light Communication (VLC), topology design

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Publication history

Received: 12 June 2018
Accepted: 24 June 2018
Published: 22 July 2019
Issue date: February 2020

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