在分解和多运营商环境中将光频谱作为服务运营 [特邀]

IF 4 2区 计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE
Kaida Kaeval;Klaus Grobe;Jorg-Peter Elbers
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引用次数: 0

摘要

光纤通信网络是我们互联数字环境的支柱。受供应商中立性和更好地利用密集波分复用(DWDM)网络中空闲光频谱的影响,运营商对在其网络中实施光频谱即服务(OSaaS)很感兴趣。在 OSaaS 服务模式中,DWDM 网络运营商允许终端客户直接访问 DWDM 系统中的频谱资源,而收发器设备的购买、运行和未来升级则由服务终端客户负责。如果相邻网段的光谱资源可用,且单个网段的性能足够好,OSaaS 允许光信号穿越多个域,在数千公里的范围内运行。这些网域可能由不同的运营商拥有,并采用不同的 DWDM 网络技术,使用不同的组件和信道规划。这可能会对网络的完整性构成威胁,因为目前还没有专门的分界点来根据下一网域的要求对接收和传输的信号进行管理。本文回顾了在运营商网域之间提供分界功能的现有设备,并介绍了一种与基础设施、DWDM 技术、供应商和网域无关的光分界设备,称为网域接口设备(NeDID)。我们将讨论 NeDID 如何提供信号管理和兼容性监控,从而实现一种全新的、独立于基础设施的网络概念--透明光覆盖网络(TOON)。我们进一步解释了 NeDID 设备的所有权,并研究了在任何底层光网络基础设施上运行灵活、安全的 OSaaS 的技术经济效益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Operation of optical spectrum as a service in disaggregated and multi-operator environments [Invited]
Fiber optical communication networks are the backbone of our interconnected digital environments. Motivated by vendor neutrality and better utilization of the vacant optical spectrum in dense wavelength-division multiplexing (DWDM) networks, the operators are interested in implementing optical spectrum as a service (OSaaS) in their networks. In the OSaaS service model, the DWDM network operator grants the end customer direct access to the spectral resources in the DWDM system, and the transceiver equipment purchase, its operation, and future upgrades are the responsibility of the service end customer. If the spectral resources are available in adjacent network segments and the performance of the individual segment is adequate, OSaaS allows optical signals to be operated over thousands of kilometers, traversing multiple domains. These domains can be owned by different operators and built using different DWDM network technologies, utilizing different components and channel plans. This can pose a threat to the network integrity, as today, no dedicated demarcation points exist to police the received and transmitted signals as per the next domain’s requirements. This paper reviews the readily available equipment to provide demarcation functions between the operator domains and introduces an infrastructure-, DWDM technology-, vendor-, and domain-independent optical demarcation device called the network domain interface device (NeDID). We discuss how NeDID provides signal policing and compatibility monitoring, enabling a new, infrastructure-independent networking concept—a transparent optical overlay network (TOON). We further explain the ownership of the NeDID devices and investigate the techno-economic benefits of operating flexible and secure OSaaS over any underlying optical network infrastructure.
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来源期刊
CiteScore
9.40
自引率
16.00%
发文量
104
审稿时长
4 months
期刊介绍: The scope of the Journal includes advances in the state-of-the-art of optical networking science, technology, and engineering. Both theoretical contributions (including new techniques, concepts, analyses, and economic studies) and practical contributions (including optical networking experiments, prototypes, and new applications) are encouraged. Subareas of interest include the architecture and design of optical networks, optical network survivability and security, software-defined optical networking, elastic optical networks, data and control plane advances, network management related innovation, and optical access networks. Enabling technologies and their applications are suitable topics only if the results are shown to directly impact optical networking beyond simple point-to-point networks.
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