迈向5G故障恢复能力：服务转移
Towards Failure Resiliency in 5G: Service Shifting
摘要：
可以通过多个VNF图来提供许多真实世界的服务，例如，服务本身的高质量和低质量变体。基于这一观察，我们将网络编排中的服务扩展概念扩展到服务转移，即，在实现相同服务的VNF图之间切换。服务转移可以服务于多个目标，从降低运营成本到应对基础设施问题。此外，它增强了网络运营商和第三方内容提供方（“垂直”）之间的服务级别协议的灵活性。在本文中，我们介绍并描述了服务转移的概念，其优点以及相关的挑战，特别是如何将服务转移集成到现实世界的5G架构和实现中。我们的结论是，现有的网络编排框架可以很容易地扩展到支持服务转移，它的采用有可能使运营商在高负载条件下更容易管理5G网络切片，同时仍然满足垂直行业的要求。
英文摘要：
Many real-world services can be provided through multiple VNF graphs, corresponding, e.g., to high- and low-quality variants of the service itself. Based on this observation, we extend the concept of service scaling in network orchestration to service shifting, i.e., switching between the VNF graphs implementing the same service. Service shifting can serve multiple goals, from reducing operational costs to reacting to infrastructure problems. Furthermore, it enhances the flexibility of service-level agreements between network operators and third party content providers ("verticals"). In this paper, we introduce and describe the service shifting concept, its benefits, and the associated challenges, with special reference to how service shifting can be integrated within real-world 5G architectures and implementations. We conclude that existing network orchestration frameworks can be easily extended to support service shifting, and its adoption has the potential to make 5G network slices easier for the operators to manage under high-load conditions, while still meeting the verticals' requirements.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
