An All-Optical Metro Network With Hybrid Optical Circuit Switching and Optical Time-Slot Switching for Heterogeneous Access Services

IF 7.9 2区计算机科学 Q1 ENGINEERING, MULTIDISCIPLINARY

IEEE Transactions on Network Science and Engineering Pub Date : 2025-06-16 DOI:10.1109/TNSE.2025.3579594

Bitao Pan;Yu Wang;Zhaoyang Liu;Fulong Yan;Jiawei Zhang;Jie Zhang

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引用次数: 0

Abstract

Next-generation optical metro networks need to support massive radio access nodes, edge computing nodes and residential users with a higher level of dynamicity and flexibility, lower and deterministic latency, and improved energy efficiency. In this context, an all-optical end-to-end network infrastructure enabling massive connectivity and dynamical reconfiguration is necessary. In this paper, we investigate the state-of-the-art all-optical metro network technologies. We analyze their limitations and propose a new network architecture called MOON (Metro Optical Circuit Switching and Optical Time-slot Switching Network). MOON is an all-optical metro network with the “One Fits All” concept, designed to serve converged fixed, mobile, and edge computing services. In the optical layer, MOON utilizes hybrid optical switching (HOS), which combines optical circuit switching (OCS) and optical time-slot switching (OTS) to offer variable granular optical channels for diverse access traffic. This approach ensures efficient wavelength utilization and immediate response to communication requests. In the transport layer, MOON encapsulates diverse client traffic and implements network slicing using optical service unit (OSU) technologies. In addition, a hierarchical QoS-aware scheduling method is proposed to map different client traffic flows into MOON network while meeting their QoS requirements. Numerical results show that MOON achieves up to 28% and 77% of wavelength savings compared to OCS-based networks under different network scales, and MOON with the proposed network slicing can allocate the appropriate amount of network resources to different types of client traffic according to their QoS requirements.

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面向异构接入业务的混合光路交换和光时隙交换全光城域网络

下一代光城域网络需要支持大规模无线接入节点、边缘计算节点和住宅用户，具有更高的动态性和灵活性、更低的确定性延迟以及更高的能源效率。在这种情况下，支持大规模连接和动态重构的全光端到端网络基础设施是必要的。在本文中，我们研究了最先进的全光城域网络技术。我们分析了它们的局限性，提出了一种新的网络架构，称为MOON（城域光电路交换和光时隙交换网络）。MOON是一个具有“一刀切”理念的全光城域网络，旨在提供融合的固定、移动和边缘计算服务。在光层，MOON利用混合光交换（HOS），将光电路交换（OCS）和光时隙交换（OTS）相结合，为不同的接入业务提供可变粒度的光通道。这种方法确保了有效的波长利用和对通信请求的即时响应。在传输层，MOON封装了不同的客户端流量，并使用光服务单元（OSU）技术实现了网络切片。此外，提出了一种分层QoS感知调度方法，将不同的客户端流量映射到MOON网络中，同时满足其QoS要求。数值结果表明，在不同的网络规模下，MOON比基于ocs的网络分别节省了28%和77%的波长，并且基于所提出的网络切片的MOON可以根据不同类型的客户端流量的QoS需求分配适当的网络资源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Network Science and Engineering Engineering-Control and Systems Engineering

CiteScore

12.60

自引率

9.10%

发文量

393

期刊介绍： The proposed journal, called the IEEE Transactions on Network Science and Engineering (TNSE), is committed to timely publishing of peer-reviewed technical articles that deal with the theory and applications of network science and the interconnections among the elements in a system that form a network. In particular, the IEEE Transactions on Network Science and Engineering publishes articles on understanding, prediction, and control of structures and behaviors of networks at the fundamental level. The types of networks covered include physical or engineered networks, information networks, biological networks, semantic networks, economic networks, social networks, and ecological networks. Aimed at discovering common principles that govern network structures, network functionalities and behaviors of networks, the journal seeks articles on understanding, prediction, and control of structures and behaviors of networks. Another trans-disciplinary focus of the IEEE Transactions on Network Science and Engineering is the interactions between and co-evolution of different genres of networks.