The present invention relates to a method for performing positioning in a cellular-vehicle to everything (C-V2X) system, and a device therefor. A method for performing positioning in a terminal mounted on a positioning vehicle in a C-V2X communication system according to one aspect may comprise the steps of: measuring a time of flight (ToF) by performing road side unit (RSU) and round trip time (RTT) ranging; determining a positioning mode, wherein the positioning mode includes a self-positioning mode and a cooperative positioning mode; measuring the relative positions of surrounding vehicles by using a sensor provided in the positioning vehicle on the basis of the determined positioning mode being the cooperative positioning mode, and storing first positioning measurement information corresponding to the measured relative positions; selecting a surrounding vehicle on which to perform cooperative positioning; transmitting the first positioning measurement information to the selected surrounding vehicle; receiving second positioning measurement information from the selected surrounding vehicle; and determining the current location of the positioning vehicle on the basis of the first and second positioning measurement information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE via reflection by one or more passive devices, a first reference signal (RS) that is based at least in part on a shared first key that corresponds to a configuration of the one or more passive devices. The first UE may receive, from the second UE via reflection, a second RS that is based at least in part on the first key. The first UE may generate a second key based at least in part on a measurement of the second RS. The first UE may transmit a positioning reference signal that is based at least in part on the second key and that is associated with a measurement of a range between the first UE and the second UE. Numerous other aspects are described.

An occupant detection device may be configured to detect an occupant in a space where the occupant detection device is installed. The occupant detection device may include an occupant detection circuit that is configured to determine locations of one or more occupants in the space. The occupant detection device may also include a low-power detection circuit that is configured to indicate an occupancy or vacancy condition in the space. The occupant detection device may include a control circuit that is configured to determine that the low-power detection circuit indicates that there are no occupants within the space. The control circuit may determine that there is movement in an occupant map or a region of interest (ROI) as indicated by the locations of the one or occupants as determined by the occupant detection circuit. The control circuit may configure masked regions around the locations of the movement, and store the masked regions in memory. The movement detected by the occupant detection device within the masked regions may be ignored when determining an occupant count for the space.

A portable device is configured to establish a Bluetooth low energy (BLE) communication connection with a vehicle and to communicate with at least one sensor in the vehicle using impulse radio (IR) ultra-wide band (UWB) communication after establishment of the BLE communication connection with the vehicle is completed. A location of the portable device is determined by the vehicle based on ranging using IR UWB communication performed by the at least one sensor.

A method for determining a protection zone with a protection radius about a wireless communication object transponder, wherein the method includes a) ascertaining a first indefinite position of the object transponder using a first locating system, b) ascertaining at least two definite anchor object distances between the object transponder and at least two anchor gateways with respective known positions via a definite distance measuring device using a two-way ranging method, and c) ascertaining the protection radius using a failsafe computing device which receives the first indefinite position from the first locating system and the at least two definite anchor object distances from the distance measuring device and determines the protection radius therefrom using the known positions of the at least two anchor gateways.

An ultra-wideband (UWB) anchor using an UWB ON/OFF operation method to minimize degradation of ranging performance. The UWB anchor includes: a power supply to supply power to the UWB anchor; a transceiver to transmit/receive a UWB signal to and from a UWB tag for performing ranging; and a controller to end a ranging session when a cumulative sum of ranging failures for a specific time unit reaches a maximum number of failed ranging round attempts, and to control the power supply and the transceiver to re-enter a UWB signal-reception standby (or UWB ON) mode when a condition is satisfied.

This disclosure describes systems, methods, and devices related to passive location measurement in wireless communications. A device may perform a ranging measurement with a first device and a second device. The device may identify a first uplink (UL) location measurement report (LMR) received from the first device. The device may identify a second UL LMR received from the second device. The device may cause to send a first broadcast LMR comprising information associated with the ranging determination of the first device and the second device. The device may cause to send a second broadcast LMR comprising the measurement information carried in the first UL LMR and the second UL LMR.

A safety sensing system implements a method for a person in an industrial environment comprises providing a personnel locator device (10) for location on a person and a reference system comprising a plurality of nodes (20) located at predetermined locations in the industrial environment (100). Radio ranging signals are transmitted between the nodes (20) and the personnel locator device (10) and measurements of times of flight of the radio ranging signals are derived. The location of the personnel locator device (10) is calculated based on the measurements of the times of flight of the radio ranging signals and reference information representing the predetermined locations of the nodes (10). It is determined if the calculated location of the personnel locator device (10) is within one or more danger zones in the industrial environment (100) and a warning signal is output in response thereto.

The present disclosure generally pertains to systems and methods for autonomously detecting and correcting anomalies in position information provided to aircraft using radio-frequency signals. By enabling autonomously detecting and correcting for anomalies in the operation of a ground-based solution entirely independent of GPS, systems of the present disclosure can make the provided position information more accurate and robust, thereby enhancing the effectiveness and safety of navigation systems using the provided position information. More precisely, systems of the present disclosure may employ a series of ground-based beacon transmitters to provide radio-frequency (RF) signal pulse with a highly regular frequency. A locating receiver can detect the arrival times of these pulses and use this information to detect and report certain anomalies. These reports may then be used to autonomously correct the detected anomalies.

A self-location estimation device includes a landmark detection unit that detects a landmark from camera information, an association unit that associates the landmark detected by the landmark detection unit with a radar information group, a landmark sorting unit that performs sorting of the landmarks detected by the landmark detection unit based on the radar information groups associated with the landmarks by the association unit, and a positional relation calculation unit that calculates a positional relation between an own vehicle and the landmark employed by the landmark sorting unit, based on the radar information group associated with the landmark.