Identifying the closest fog node is crucial for mobile clients to benefit from fog computing. Relying on geographical location alone us insufficient for this as it ignores real observed client access latency. In this paper, we analyze the performance of the Meridian and Vivaldi network coordinate systems in identifying nearest fog nodes. To that end, we simulate a dense fog environment with mobile clients. We find that while network coordinate systems really find fog nodes in close network proximity, a purely latency-oriented identification approach ignores the larger problem of balancing load across fog nodes.

翻译：确定最近的雾节点是移动客户端从雾计算中获益的关键。仅依赖地理位置并不足以实现这一目标，因为它忽略了实际观测到的客户端访问延迟。在本文中，我们分析了Meridian和Vivaldi网络坐标系统在识别最近雾节点方面的性能。为此，我们模拟了一个包含移动客户端的密集雾环境。我们发现，尽管网络坐标系统确实能找到网络邻近度高的雾节点，但纯粹以延迟为导向的识别方法忽略了在雾节点间平衡负载这一更广泛的问题。