A Software-Defined Programmable Testbed for Beyond 5G Optical-Wireless Experimentation at City-Scale
A Software-Defined Programmable Testbed for Beyond 5G Optical-Wireless Experimentation at City-Scale
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DOI：
10.1109/mnet.006.2100605
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发表时间：
2022-03
期刊：
影响因子：
9.3
通讯作者：
Tingjun Chen;Jiakai Yu;Artur Minakhmetov;Craig L. Gutterman;Michael Sherman;Shengxiang Zhu;Steven Santaniello;Aishik Biswas;I. Seskar;G. Zussman;D. Kilper
中科院分区：
文献类型：
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作者：
Tingjun Chen;Jiakai Yu;Artur Minakhmetov;Craig L. Gutterman;Michael Sherman;Shengxiang Zhu;Steven Santaniello;Aishik Biswas;I. Seskar;G. Zussman;D. Kilper
在下一代网络中，无线流量将显著增加。因此，需要新颖的光网络前/中/回程（x-haul）架构，其可以向无线和边缘云系统提供超高带宽和超低延迟服务，以及支持各种云无线电接入网络（C-RAN）架构。设计和评估这样的架构需要大规模的实验平台。在这篇文章中，我们提出了一个独特的，远程访问的，分散的，可编程的光网络的设计和实施，作为城市规模的PAWR COSMOS先进的无线测试平台的关键组成部分。我们讨论了一个专用的多功能Ryu软件定义网络（SDN）控制器的设计和实现的测试床的光网络波长信道分配和拓扑结构的重新配置。我们提出了一个示例使用的SDN控制器的波长相关的放大器增益的监测和自动测量部署的可重构光分插复用器（ROADM）单元。我们还展示了一个试点实验，重点是在COSMOS测试平台上的C-RAN架构的无线切换方案，其中高流量可以通过在前传光交换的动态波长分配支持。现场部署的测试平台和SDN控制器可供研究界使用，以推动5G和6 G以外的光网络领域的发展。
Wireless traffic will significantly increase in next-generation networks. Therefore, there is a need for novel optical network front-/mid-/backhaul (x-haul) architectures that can deliver ultra-high bandwidth and ultra-low-latency services to wireless and edge cloud systems, as well as support various cloud radio access network (C-RAN) architectures. Designing and evaluating such architectures requires large-scale experimental platforms. In this article, we present the design and implementation of a unique, remotely accessible, disaggregated, and programmable optical network as the key component of the city-scale PAWR COSMOS advanced wireless testbed. We discuss the design and implementation of a dedicated multi-functional Ryu software-defined networking (SDN) controller for the testbed's optical network wavelength channel assignment and topology reconfiguration. We present an example use of the SDN controller for monitoring and automated measurement of the wavelength-dependent amplifier gain in deployed reconfigurable optical add/drop mul-tiplexer (ROADM) units. We also demonstrate a pilot experiment focusing on a wireless handover scheme for C-RAN architectures in the COSMOS testbed, where high traffic volume can be supported by dynamic wavelength allocation via optical switching in the fronthaul. The field-deployed testbed and SDN controller can be used by the research community to push the envelope in the area of optical networks for beyond 5G and 6G.