Optical access networks (OANs) with passive optical network technology have been globally deployed on a massive scale, serving as the fundamental information infrastructure of teleCommunication networks. Some telecom service providers are re-architecting their networks based on cloud central office with software-defined networking and network functions virtualization capabilities to provide service agility, intelligence, and scalability. In this article, we present a synthesized analysis of the inherent value and practical use cases of access network (AN) slicing in the context of software-defined OANs. A novel hierarchical abstraction model and a workflow of end-to-end network slicing are presented to illustrate the support of multi-service and multi-tenancy applications over a converged OAN platform by enabling automatic life cycle management of AN slicing. Two successful trials utilizing the model and the workflow are also demonstrated.

中文翻译：

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软件定义光接入网络网络切片的架构设计和生命周期管理

采用无源光网络技术的光接入网络（OAN）已在全球范围内大规模部署，作为电信网络的基础信息基础设施。一些电信服务提供商正在基于云中心局重新构建他们的网络，具有软件定义的网络和网络功能虚拟化能力，以提供服务的敏捷性、智能性和可扩展性。在本文中，我们对软件定义的 OAN 环境中接入网络 (AN) 切片的内在价值和实际用例进行了综合分析。提出了一种新颖的分层抽象模型和端到端网络切片的工作流程，以通过启用 AN 切片的自动生命周期管理来说明在融合 OAN 平台上对多服务和多租户应用程序的支持。还展示了利用该模型和工作流程进行的两次成功试验。