Deploying Internet of Things (IoT)-enabled virtual network function (VNF) chains to Cloud-Edge infrastructures requires determining a placement for each VNF that satisfies all set deployment requirements as well as a software-defined routing of traffic flows between consecutive functions that meets all set communication requirements. In this article, we present a declarative solution, EdgeUsher, to the problem of how to best place VNF chains to Cloud-Edge infrastructures. EdgeUsher can determine all eligible placements for a set of VNF chains to a Cloud-Edge infrastructure so to satisfy all of their hardware, IoT, security, bandwidth, and latency requirements. It exploits probability distributions to model the dynamic variations in the available Cloud-Edge infrastructure and to assess output eligible placements against those variations.

中文翻译：

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VNF 链在边缘的概率 QoS 感知放置

将支持物联网 (IoT) 的虚拟网络功能 (VNF) 链部署到云边缘基础设施需要确定满足所有设置部署要求的每个 VNF 的位置，以及满足所有连续功能之间的软件定义流量路由所有设置的通信要求。在本文中，我们提出了一个声明性解决方案 EdgeUsher，以解决如何最好地将 VNF 链放置到 Cloud-Edge 基础设施的问题。EdgeUsher 可以确定一组 VNF 链到 Cloud-Edge 基础设施的所有合格放置，以满足其所有硬件、物联网、安全性、带宽和延迟要求。它利用概率分布对可用 Cloud-Edge 基础设施中的动态变化进行建模，并针对这些变化评估符合条件的输出放置。