TY - JOUR
T1 - WiFi round-trip time (RTT) fingerprinting
T2 - an analysis of the properties and the performance in non-line-of-sight environments
AU - Feng, Xu
AU - Nguyen, Khuong An
AU - Luo, Zhiyuan
PY - 2023/8/11
Y1 - 2023/8/11
N2 - Indoor positioning systems based on WiFi round-trip time (RTT) measurement were reported to deliver sub-metre-level accuracy using trilateration, under ideal indoor conditions. However, the performance of WiFi RTT positioning in complex, non-line-of-sight environment remains an open research question. To this end, this article investigates the properties of WiFi RTT in several real-world indoor environments on heterogeneous smartphones. We present three datasets collected on a large-scale building floor, an office room and an apartment. The datasets contain both RTT and received signal strength (RSS) signal measures with correct ground-truth labels for further research. Our results indicated that in a complex indoor environment, RTT fingerprinting system delivered an accuracy of 0.6 m which was 107% better than traditional RSS fingerprinting and 6 m better than RTT trilateration which failed to deliver sub-metre accuracy as claimed.
AB - Indoor positioning systems based on WiFi round-trip time (RTT) measurement were reported to deliver sub-metre-level accuracy using trilateration, under ideal indoor conditions. However, the performance of WiFi RTT positioning in complex, non-line-of-sight environment remains an open research question. To this end, this article investigates the properties of WiFi RTT in several real-world indoor environments on heterogeneous smartphones. We present three datasets collected on a large-scale building floor, an office room and an apartment. The datasets contain both RTT and received signal strength (RSS) signal measures with correct ground-truth labels for further research. Our results indicated that in a complex indoor environment, RTT fingerprinting system delivered an accuracy of 0.6 m which was 107% better than traditional RSS fingerprinting and 6 m better than RTT trilateration which failed to deliver sub-metre accuracy as claimed.
KW - Indoor Positioning
KW - WiFi Round-Trip Time
KW - Non-line-of-sight
UR - http://www.scopus.com/inward/record.url?scp=85167787152&partnerID=8YFLogxK
U2 - 10.1080/17489725.2023.2239748
DO - 10.1080/17489725.2023.2239748
M3 - Article
SN - 1748-9725
VL - 17
SP - 307
EP - 339
JO - Journal of Location Based Services
JF - Journal of Location Based Services
IS - 4
ER -