Modern 5G networks promise more bandwidth, less delay and more flexibility for an ever increasing number of users and applications, with Software Defined Networking, Network Function Virtualization and Network Slicing as key enablers. Within that context, efficiently provisioning the network and cloud resources of a wide variety of applications with dynamic user demand is a real challenge. We study here the network slice reconfiguration problem. Reconfiguring network slices from time to time reduces network operational costs and increases the number of slices that can be managed within the network. However, this affect the Quality of Service of users during the reconfiguration step. To solve this issue, we study solutions implementing a make-before-break scheme. We propose new models and scalable algorithms (relying on column generation techniques) that solve large data instances in few seconds.

中文翻译：

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在重新配置期间可扩展并拯救我的切片

现代 5G 网络承诺为越来越多的用户和应用程序提供更多带宽、更少延迟和更大灵活性，其中软件定义网络、网络功能虚拟化和网络切片是关键推动因素。在这种情况下，有效地为具有动态用户需求的各种应用程序提供网络和云资源是一项真正的挑战。我们在这里研究网络切片重新配置问题。不时重新配置网络切片可降低网络运营成本并增加可在网络内管理的切片数量。但是，这会在重新配置步骤期间影响用户的服务质量。为了解决这个问题，我们研究了实现先行后断方案的解决方案。