The Fine Time Measurement (FTM) protocol introduced by IEEE 802.11 includes a new
ranging method, named Wi-Fi Round Trip Time (Wi-Fi RTT), which can be used for indoor …

Currently, people's daily study, work, leisure are more and more concentrated in high-rise
buildings. It is often difficult to quickly obtain the floor information when they are in a complex …

To ensure effective management and security in large-scale public events, it is imperative for
the event organizers to be aware of potentially critical crowd densities. This article, therefore …

The fine timing measurement (FTM) protocol is designed to determine precise ranging
between Wi-Fi devices using round-trip time (RTT) measurements. However, the multipath …

With the rapid development of robotics, miniaturized and inexpensive robots have gradually
entered the public's field of vision. Smartphone-based robots have the potential to provide …

Indoor localization using fine time measurement (FTM) round-trip time (RTT) with respect to
cooperating Wi-Fi access points (APs) has been shown to work well and provide 1–2 m …

Accurate indoor positioning is critical to a variety of use cases including tracking, proximity,
mapping, and navigation. Existing positioning methods are either inaccurate (eg RSSI …

As one of the key technologies of the 5G, the device-to-device (D2D) can realize
communication between terminals without any base station, thus achieving more …

With the widespread deployment of the fifth-generation (5G) network indoors, commercial
5G signals are highly attractive in the field of indoor positioning because of their ubiquity …

Floor positioning is an important aspect of indoor positioning technology, which is closely
related to location-based services (LBSs). Currently, floor positioning technologies are …