Communication systems are used not only by voice or file exchange applications, but also by other types of applications due to the coexistence of multiple and different verticals. Each vertical has its own requirements in terms of key performance indicators (KPIs) for their applications. Mapping the verticals KPIs into network quality of service (QoS) parameters and enforcing it at the network level is a complex procedure. Network slicing allows the deployment of multiple virtual networks (one per vertical) to work in parallel with their specific QoS based on the KPIs. This article presents and experimentally validates a KPI-enabled network function virtualization (NFV) management and orchestration (MANO) architecture able to manage network slices, to monitor the vertical KPI requirements and react in case they are not met. We address this objective from a holistic perspective, defining the network QoS parameters that enable meeting vertical KPIs along all levels of the NFV MANO architecture: the NSs using the 5G QoS Identifier parameter, the NFV network services using service level agreements, and the networking and computing services with QoS parameters. Finally, the described architecture is validated through an experimental use case based on a vertical realtime communications application.

中文翻译：

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支持 KPI 的 NFV MANO 架构，用于具有 QoS 的网络切片

通信系统不仅被语音或文件交换应用程序使用，而且由于多个不同垂直行业的共存，还被其他类型的应用程序使用。每个垂直行业在其应用程序的关键绩效指标 (KPI) 方面都有自己的要求。将垂直 KPI 映射到网络服务质量 (QoS) 参数并在网络级别执行它是一个复杂的过程。网络切片允许部署多个虚拟网络（每个垂直一个）与基于 KPI 的特定 QoS 并行工作。本文介绍并通过实验验证了支持 KPI 的网络功能虚拟化 (NFV) 管理和编排 (MANO) 架构，该架构能够管理网络切片、监控垂直 KPI 要求并在未满足时做出反应。我们从整体的角度来解决这个目标，定义了网络 QoS 参数，这些参数能够满足 NFV MANO 架构所有级别的垂直 KPI：使用 5G QoS 标识符参数的 NS，使用服务级别协议的 NFV 网络服务，以及网络和具有 QoS 参数的计算服务。最后，通过基于垂直实时通信应用程序的实验用例验证所描述的架构。