Special Cluster in Conjunction with IEICE General Conference 2020
Measurement accuracy of Wi-Fi FTM on actual devices
2020 年 9 巻 12 号 p. 567-572
詳細
2020 年 9 巻 12 号 p. 567-572
Demand for positioning services such as object tracking systems and navigation systems is increasing. The current Wi-Fi positioning system uses the algorithm using mainly the signal strength. However, the signal strength is susceptible to multipath propagation, thus the ranging error generally large. The IEEE802.11mc specifies the fine timing measurement (FTM) protocol based on round trip time (RTT). As of now, few commercial products support the FTM function. The objective of this letter is to evaluate the accuracy of the Wi-Fi FTM using the actual devices and to perform one-dimensional positioning by a simple algorithm. In the one-dimensional positioning, average positioning accuracy is 0.10m in outdoor and 0.23m in indoor.
