说明：  PhaseU，一种 实时LOS识别方案，既适用于静态也适用 商用WiFi基础设施的移动场景。 各种室内场景的实验结果表明了这一点 PhaseU始终优于以前的方法，实现了总体LOS和NLOS检测率为94.35％和 静态情况下为94.19％，移动电话均高于80％ 上下文。 此外，PhaseU实现了实时功能 连接AP的毫秒级延迟和1秒延迟 对于未连接的AP，这远远超出现有方法
(PhaseU, a real-time LOS identification scheme that works in both static and mobile scenarios on commodity WiFi infrastructure. Experimental results in various indoor scenarios demonstrate that PhaseU consistently outperforms previous approaches, achieving overall LOS and NLOS detection rates of 94.35% and 94.19% in static cases and both higher than 80% in mobile contexts. Furthermore, PhaseU achieves real-time capability with millisecond-level delay for a connected AP and 1-second delay for unconnected APs, which is far beyond existing approaches)