Description: 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
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