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：辨识最近雾节点对移动客户端充分利用雾计算至关重要。仅依赖地理位置进行辨识并不充分，因为这忽略了实际观测到的客户端访问延迟。本文分析了Meridian与Vivaldi网络坐标系统在识别最近雾节点方面的性能。为此，我们模拟了包含移动客户端的密集雾环境。研究发现，尽管网络坐标系统确实能发现网络邻近度较高的雾节点，但纯面向延迟的识别方法忽略了跨雾节点负载均衡这一更宏观的问题。