Abstract: A method for determining a distance between an initiator radio transceiver and a reflector radio transceiver is provided. The method comprises the initiator radio transceiver transmitting a first radio signal at a first transmission time and the reflector radio transceiver receiving the first radio signal at a first reception time. The reflector transceiver samples the first radio signal using a sampling clock signal having a sampling period and determines a first reception-time value at a temporal resolution that is finer than the sampling period, including a fractional component representative of a fraction of the sampling period. The reflector transceiver transmits a second radio signal at a second transmission time that is offset from the sampling clock signal by an amount that depends on said fractional component so as to provide a predetermined dwell time that is determined to an accuracy finer than the sampling period.

Abstract: A system that is capable of detecting a Man in the Middle attack is disclosed. The system includes a receive circuit for receiving incoming packets. The system also includes a digitized model of at least part of the receive circuit and optionally part of the transmit circuit. The system compares the output from the digitized model with the output from the read circuit to determine the likelihood of a Man in the Middle Attack. In certain embodiments, the digitized model is a finite impulse response filter with multiple taps. The system correctly identifies Man in the Middle attacks more than 90% of the time when the signal to noise ratio is greater than 20 dB.

Abstract: Wireless communication between two electronic devices may be used to determine a distance between the two devices, even in the presence of an otherwise-disruptive attacker. A wireless receiver system of one device may receive a true wireless ranging signal from a first transmitting device and a false wireless ranging signal from an attacker. The wireless receiver system may correlate the wireless signals with a known preamble sequence and perform channel estimation using the result, obtaining a channel impulse response for the wireless signals. The wireless receiver system may filter the channel impulse response for the plurality of wireless signals by removing at least part of the channel impulse response due to the false wireless ranging signal while not removing at least part of the channel impulse response due to the true wireless ranging signal. The receiver system may perform a wireless ranging operation using the filtered channel impulse response.

Abstract: Systems and methods of measuring distance between two wireless devices by combining phase shift and time-of-flight measurements. A first wireless devices sends a first packet to the second wireless device. After receiving the first packet, the second wireless device sending to the first wireless device a second packet. After sending the second packet, the second wireless device sends a first continuous wave signal to the first wireless device. After receiving the first continuous wave signal, the first wireless device sends to the second wireless device a second continuous wave signal. The first wireless device then calculates a time-of-flight measurement based on a time between the first wireless device sending the first packet and receiving the second packet, and calculates a second measurement based on a phase shift of the first continuous wave signal and the second continuous wave signal, and combines the two measurements.

Abstract: The present disclosure provides radio-frequency (RF) systems that can detect the presence of RF signals received by the system, as well as determine characteristics such as the operating frequency of RF signals, the type of RF source that transmitted each RF signal, and/or the location of each RF source with high precision and sensitivity while using low cost, scalable electronics that are versatile enough for deployment in a variety of environments. Such systems can employ a network of RF sensors that can coordinate in response to communication with a computer to perform any such detection and/or determination using trained models executed onboard the RF sensors and/or the computer. RF signals may have unique characteristics when received at one or more RF sensors that may be detected using trained models described herein, even in high noise or non-line of sight (LOS) environments and with low cost, low resolution RF receiver hardware.

Abstract: Disclosed is a distance measuring system for measuring distance of a first transceiver from second transceivers, comprising the first transceiver having a first time zone, a second transceiver having a second time zone, and a control unit having a control-unit time zone. The second transceiver ascertains a time-zone relationship between the second transceiver and the first transceiver, and transmits the time-zone relationship to the control unit. The control unit receives the time-zone relationship, and ascertains, using the received time-zone relationship, a time-zone relationship between the control-unit time zone and the first transceiver. The first transceiver transmits at a defined instant in time or for a defined time period of the first time zone a distance measurement command to the second transceiver. The first transceiver transmits a measurement signal at a further defined instant in time, and the second transceiver switches from an inactive into an active receiving or measuring state.

Abstract: A method for dynamically matching energy demand of a population of electric vehicles (EVs) with energy supply of a population of charging stations within a geofenced perimeter includes receiving, via a cloud-based server, EV information from each respective EV, and receiving charging station information from each respective charging station. The method includes generating an SoC map and a charging station power map from the EV information and the charging station information, respectively, and predicting the energy supply and demand using the maps. The server dynamically matches the EVs to at least one of the charging stations or vice versa using a reward function, the predicted energy supply, and the predicted energy demand, including generating a rank-ordered listing for each of the EVs and/or each of the charging stations in a manner that maximizes an expected discounted future reward.

Abstract: A method of distributing intention signaling messages for a vehicle. The vehicle having a plurality of directional radio antennas oriented to transmit radio signals in predetermined and distinct directions. Responsive to the intended change in the vehicle motion, at least one of a plurality of directional radio antennas is selected. The selected directional radio antenna facing in the direction of surrounding traffic which would be affected by the intended change in motion is selected. An intention signaling message is formed and transmitted. The intention signaling message corresponds to the intended change in the vehicle motion by means of the selected directional radio antenna.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a management network node may receive, from a communication network node, a service activation request for a non-data wireless service (NDWS). The management network node may transmit, to a verification network node, a request associated with providing an NDWS configuration for the communication network node. The management network node may receive, from the verification network node, a configuration indication associated with the management network node providing the NDWS configuration for the communication network node. Numerous other aspects are described.

Abstract: A technique for determining a relative position of a preceding vehicle with respect to a succeeding vehicle in a vehicle platoon is disclosed, wherein the succeeding vehicle comprises at least two front tags and the preceding vehicle comprises at least two back tags, the front and back tags being configured to perform ranging measurements among each other using radio technology. A method implementation of the technique comprises determining (S202) pairwise distances between the front and back tags using ranging measurements performed by the front and back tags using the radio technology, and determining (S204) the relative position of the preceding vehicle with respect to the succeeding vehicle based on the determined pairwise distances.

Abstract: Ultra-Wideband (UWB) wireless technology transmits digital data as modulated coded impulses over a very wide frequency spectrum with very low power over a short distance. Accordingly, the inventors have established UWB devices which accommodate and adapt to inaccuracies, errors, or issues within the implemented electronics, hardware, firmware, and software. Beneficially, UWB receivers may accommodate offsets in absolute frequency between their frequency source and the transmitter, accommodate drift arising from phase locked loop and/or from relative clock frequency offsets of the remote transmitter and local receiver. UWB devices may also employ modulation coding schemes offering increased efficiency with respect to power, data bits per pulse transmitted, and enabled operation at higher output power whilst complying with regulatory emission requirements.

Abstract: A method of operating a first target device for transmitting and receiving data through an ultra-wideband (UWB) channel in a wireless communication system includes receiving a ranging initiation message from an electronic device, transmitting, to the electronic device, a ranging response message in response to receiving the ranging initiation message, receiving, from the electronic device, a measurement report message comprising measured time information measured by the electronic device, based on a plurality of ranging response messages of a plurality of target devices, wherein the plurality of target devices includes the first target device and a second target device, determining time information of the first target device for determining a distance to the electronic device, based on the measurement report message, and determining the distance to the electronic device based on the time information.

Abstract: In various examples, a current claimed set of points representative of a volume in an environment occupied by a vehicle at a time may be determined. A vehicle-occupied trajectory and at least one object-occupied trajectory may be generated at the time. An intersection between the vehicle-occupied trajectory and an object-occupied trajectory may be determined based at least in part on comparing the vehicle-occupied trajectory to the object-occupied trajectory. Based on the intersection, the vehicle may then execute the first safety procedure or an alternative procedure that, when implemented by the vehicle when the object implements the second safety procedure, is determined to have a lesser likelihood of incurring a collision between the vehicle and the object than the first safety procedure.

Abstract: A method of measuring a wireless OFDM PRS at a user equipment includes: selecting a symbol subset of a symbol group of the OFDM PRS, the OFDM PRS comprising a slot of symbols comprising the symbol group, the symbol group consisting of a first symbol quantity of consecutive ones of the symbols, the symbol group being fully staggered in frequency domain, the symbol subset consisting of a second symbol quantity of the symbols of the symbol group, the second symbol quantity being smaller than the first symbol quantity, and the symbol subset being less than fully staggered in the frequency domain; and measuring the symbol subset without measuring all of the symbols of the symbol group.

Abstract: According to one embodiment, an electronic apparatus includes a processor configured to estimate positions of wireless devices communicating each other from a plurality of position candidates based on position candidate information indicating the position candidates of the wireless devices and communication information between the plurality of wireless devices located in any of the plurality of position candidates, and determine a first position among the position candidates according to a likelihood of the wireless devices estimated to be located in the position candidates.

Abstract: Aspects of the subject disclosure may include, for example, determining anchor pairs from among a group of anchors and a first mobile device that is operating in an anchor mode, where the determining the anchor pairs is based at least in part on anchor locations, and where the anchor locations are known by the server for the group of anchors and for the first mobile device; generating a schedule for communications between the anchor pairs and one or more second mobile devices; and providing the schedule to the anchor pairs, wherein the communications between the anchor pairs and the one or more second mobile devices enables each of the one or more second mobile devices to determine its respective device position. Other embodiments are disclosed.

Abstract: Moving communication devices present challenges for conventional antenna beam sweeping techniques. According to embodiments of mobility-aware antenna beam tracking as disclosed herein signaling is communicated between a User Equipment (UE) and a moving communication device in a wireless communication network. The signaling is indicative of a beam trajectory along which an antenna beam, that is associated with the moving communication device, is moving. The moving communication device itself is also moving, along a device trajectory that may or may not be the same as the beam trajectory. The antenna beam is used for subsequent directional communications between the UE and the moving communication device.

Abstract: A positioning device operates in cooperation with a signal receiver for receiving a plurality of signal waves arriving from at least one synchronous transmission unit including a plurality of signal transmitters that operates in synchronization with each other. The positioning device includes: a time-of-arrival detecting unit for detecting time of arrival of each of the plurality of signal waves on the basis of a reception signal output from the signal receiver and a distance difference calculating unit for calculating a difference in distance from the plurality of signal transmitters to the signal receiver as a set of observation values on the basis of a difference in the time of arrival that has been detected; and a positioning arithmetic unit.

Abstract: An area determination system includes a decision unit, a calculation unit, and a determination unit. The decision unit decides, based on a strength of a radio signal transmitted from a transmitter and received by a receiver, a location of the transmitter. The calculation unit calculates a presence determination value. The presence determination value is based on a number of times that the location of the transmitter is determined to be in a presence determination region during a presence determination time period. The presence determination region corresponds to a target area. The determination unit, when a presence condition is satisfied, determine that the transmitter is in the target area. The presence condition is that a state where the presence determination value is greater than or equal to a presence threshold continues for a presence determination time.

Abstract: The present disclosure is directed to a device and method for generating and transmitting a TDM signal including both raw data and processed data. The device includes a sensor having a time division multiplexing (TDM) interface. The TDM interface transmits both raw data and processed data in a single TDM signal by reserving one or more slots inside a TDM frame for transmission of the processed data. The sensor also embeds additional information inside a data stream of raw data by repurposing one or more of values of the raw data as an exception code, flag, or another type of notification. The device is also enabled to transmit data, and disabled when not in use in order to conserve power.

Abstract: A distance measuring device according to an embodiment includes a first device including a first transceiver configured to transmit a first known signal and a second known signal and receive a third known signal corresponding to the first known signal and a fourth known signal corresponding to the second known signal, a second device including a second transceiver configured to transmit the third known signal and the fourth known signal and receive the first and second known signals and a calculating section configured to calculate a distance between the first device and the second device on a basis of phases of the first to fourth known signals, and the first transceiver and the second transceiver transmit/receive the first and third known signals one time each and transmit/receive the second and fourth known signals one time each, performing transmission/reception a total of four times.

Abstract: An apparatus for indicating a direction of a radio transmission is described. The apparatus includes at least one vector detection device including two or more antennas and an attenuating material between at least one of the antennas and a source of a radio transmission. The attenuating material is arranged to vary an amount of attenuation with an angle of the source with respect to at least one of the antennas. The apparatus is configured to generate a signal indicating a direction of the radio transmission by comparing received signal strengths from the two or more antennas.

Abstract: A pair of radar nodes, each with full azimuthal coverage, cooperate to identify the position of an object without explicit measurements of the object's azimuthal coordinate. A first radar node, operating within a first azimuth field of view (FOV), measures a first elevation angle and a first slant range of the object. A second radar node, operating within a second azimuth FOV, measures a second elevation angle and a second slant range of the object. The second radar node transmits the data to the first radar node, which identifies, based on the first and second azimuth FOVs, an object half space within which the object is located. The first radar node then calculates the position of the object without an ambiguous solution. Alternatively, the first radar uses the first and second azimuth FOVs to identify and reject the ambiguous solution.

Abstract: A contact tracking method and a related server are provided. In the method, the positioning information of multiple user equipments (UEs) is obtained. The UEs transmit wireless signals. The positioning information is determined based on the wireless signal. The wireless signal indicates a network provider identifier, a signal strength, or geolocation. The travel routes of the UEs are determined. Each travel route records the positioning information of one UE over time. The travel routes are analyzed to determine a contact situation between a first UE and a second UE of the UEs based on a contact criteria.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a method of wireless communication performed by a first pedestrian user equipment (PUE) includes performing a ranging operation to a set of UEs, the set including at least a second PUE, and providing ranging data to a third entity, the third entity comprising a vehicle user equipment (VUE) or a road-side unit (RSU). The set of UEs may be randomly selected or selected using a selection algorithm. The set of UEs may be selected by the PUE or by the third entity. The ranging data may include the location of the first PUE, and may include a report on the battery status of the first PUE. The third entity may use the ranging data to update estimated positions of the first PUE and the set of UEs.

Abstract: In implementations of systems for estimating three-dimensional trajectories of physical objects, a computing device implements a three-dimensional trajectory system to receive radar data describing millimeter wavelength radio waves directed within a physical environment using beamforming and reflected from physical objects in the physical environment. The three-dimensional trajectory system generates a cloud of three-dimensional points based on the radar, each of the three-dimensional points corresponds to a reflected millimeter wavelength radio wave within a sliding temporal window. The three-dimensional points are grouped into at least one group based on Euclidean distances between the three-dimensional points within the cloud. The three-dimensional trajectory system generates an indication of a three-dimensional trajectory of a physical object corresponding to the at least one group using a Kalman filter to track a position and a velocity a centroid of the at least one group in three-dimensions.

Abstract: An apparatus for playing back an audio object associated with a position includes a distance calculator for calculating distances of the position to speakers or for reading the distances of the position to the speakers. The distance calculator is configured to take a solution with a smallest distance. The apparatus is configured to play back the audio object using the speaker corresponding to the solution.

Abstract: Disclosed are techniques for using ranging signals to determine a position of a pedestrian user equipment (P-UE). In an aspect, a UE receives a plurality of ranging signals transmitted by one or more UEs, measures one or more properties of each of the plurality of ranging signals, and calculates an estimate of the position of the P-UE based on the one or more properties of each of the plurality of ranging signals. In an aspect, the P-UE transmits a plurality of ranging signals, receives a first message and a second message from first and second vehicle UEs (V-UEs), the first and second messages including first and second estimated positions of the P-UE and associated first and second confidences, and calculates an estimate of the position of the P-UE based on the first estimated position, the first confidence, the second estimated position, the second confidence, or a combination thereof.

Abstract: Methods and systems for localization within an environment include determining a topology estimate of nodes located in a dynamic indoor environment, based on distances measured between the nodes. Rigid k-core sub-graphs of the topology estimate are generated to determine relative localizations of the nodes. Relative localizations are transformed into absolute localizations to generate a map of positions of the nodes within the environment. A feature of the map is deployed to a device in the environment.

Abstract: A communication system uses multiple communications links, preferably links that use different communications media. The multiple communications links may include a high latency/high bandwidth link using a fiber-optic cable configured to carry large volumes of data but having a high latency. The communications links may also include a low latency/low bandwidth link implemented using skywave propagation of radio waves and configured to carry smaller volumes of data with a lower latency across a substantial portion of the earth's surface. The two communications links may be used together to coordinate various activities such as the buying and selling of financial instruments.

Abstract: A method and system measure a characteristic of a signal under test (SUT) using a signal measurement device. The method includes receiving the SUT through first and second input channels; digitizing first and second copies of the SUT to obtain first and second digitized waveforms; repeatedly determining first and second measurement trends to obtain measurement trend pairs; cross-correlating the first and second measurement trends in each measurement trend pair to obtain cross-correlation vectors; extracting zero-displacement values from the cross-correlation vectors, respectively; summing the zero-displacement values to obtain a sum of measurement products for the measurement trend pairs; divide the sum of zero-displacement values by a total number of measurement products to obtain an average value of the measurement products, corresponding to MSV of the measured SUT characteristic; and determining a square root of the average value of the MSV to obtain an RMS value of the measured SUT characteristic.

Abstract: A method and a traffic control entity (100) for controlling a group of vehicles (104) capable of autonomous driving without requiring a driver, to allow an emergency vehicle (102) to pass the group of vehicles (104) which are travelling concurrently in multiple lanes on a road. When detecting that the emergency vehicle (102) is approaching the group of vehicles (104) e.g. from behind, the vehicles in the group (104) are identified based on information (108) about current position and movement of the vehicles (104). The traffic control entity (100) then issues a command (106) instructing the identified vehicles to adjust their lateral positions relative the lanes to create a passage along the group of vehicles (104). Thereby, the emergency vehicle (102) is able to move through the passage without having to slow down significantly.

Abstract: The present application relates to determining a location of an object in response to a sensor output, generating a first vehicle path in response to the location of the object and a map data, determining an undrivable area within the first vehicle path, generating a waypoint outside of the undrivable area, generating a second vehicle path from a first point on the first vehicle path to the waypoint and a third vehicle path from the waypoint to a second point on the first vehicle path such that the second vehicle path and the third vehicle path are outside of the undrivable area, generating a control signal in response to the second vehicle path, the third vehicle path and and controlling a vehicle in response to the control signal such that the vehicle follows the second vehicle path and the third vehicle path.

Abstract: A system is disclosed for determining a physical metric such as position. The system comprises a local signal generator (8) configured to provide a local signal and a receiver (4) configured to receive a signal having properties corresponding to those in a signal transmitted by a trusted remote source. An inertial measurement unit (12) is configured to provide a measured or assumed movement of the receiver. A correlator (6) is configured to provide a correlation signal by correlating the local signal with the received signal. A motion compensation unit (14) is configured to provide motion compensation of at least one of the local signal, the received signal, and the correlation signal based on the measured or assumed movement.

Abstract: One example of a computer-implemented method of adjusting vehicle sensitivity comprises receiving, at a first vehicle, a vehicle profile of a second vehicle. The vehicle profile of the second vehicle correlates measured responses of one or more actuators on the second vehicle to measured user control inputs on the second vehicle. The method further comprises receiving a user control input for the first vehicle; and modifying a response of one or more actuators on the first vehicle to the received user control input based on the received vehicle profile of the second vehicle such that the one or more actuators on the first vehicle mimic the one or more actuators on the second vehicle.

Abstract: The behavior of automated agents, such as autonomous vehicles, drones, and the like, can be improved by control systems and methods that implement a combination of neighbor following behavior, or neighbor-averaged information transfer, with delayed self-reinforcement by utilizing time-delayed movement data to modify course corrections of each automated agent. Disclosed herein are systems and methods by which a follower agent, or a multiple follower agents in formation with a plurality of automated agents, can be controlled by generating course correction data for each follower agent based on the movement of neighboring agents in formation, and augmenting the course correction data based on time-delayed movement data of the follower agent.

Abstract: A location engine uses the empirical measurements made by a scouting wireless terminal (i) to discover the existence of a reference radio within a geographic region; (ii) to generate an estimate of the location of the newly-discovered reference radio, and (iii) to generate an estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio. The location engine then uses: (i) the estimate of the location of the newly-discovered reference radio, and (ii) the estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio, and (iii) measurements, made by a user wireless terminal, of the power of each of the downlink control channel radio signals transmitted by each of the reference radios to generate an estimate of the location of the user wireless terminal.

Abstract: A distance measurement system for transmitting and receiving a distance measurement signal including a phase detection signal between first and second devices and calculating a distance between the devices based on a phase detection result of the received phase detection signal includes a modulation circuit configured to generate the distance measurement signal including a modulated signal obtained by modulating an identification signal, a transmission circuit configured to transmit the distance measurement signal, a reception circuit configured to receive the distance measurement signal, a demodulation circuit configured to demodulate the modulated signal in the received distance measurement signal, and a control circuit configured to judge a restored state of the identification signal obtained from a demodulation result of the demodulation circuit.

Abstract: A secure ranging system can use a secure processing system to deliver one or more ranging keys to a ranging radio on a device, and the ranging radio can derive locally at the system ranging codes based on the ranging keys. A deterministic random number generator can derive the ranging codes using the ranging key and one or more session parameters, and each device (e.g. a cellular telephone and another device) can independently derive the ranging codes and derive them contemporaneously with their use in ranging operations.

Abstract: A system and method for monitoring emergency personnel during an emergency incident is disclosed. The emergency personnel wear wireless communication units (CU) including a short-range radio and a long-range radio. CUs are configured to periodically transmit a unique identification from the short-range radio of the CU, receive the unique identification transmitted from the short-range radio of any other CU within range of the short-range radio, and transmit a data packet from the long-range radio, each data packet containing the unique identification of the CU and all the unique identifications recently received from any other CUs. The system can include an incident command monitoring system including a computing device to access a personnel and unique identifier database and analyze the data packets and initiate an alert if the unique identification associated with one of the emergency personnel has not been received by the communication unit of a team member.

Abstract: An electronic device, a control method, and a non-transitory computer-readable recording medium are disclosed. In one embodiment, an electronic device comprises a position detector, a communication unit, and at least one processor. The position detector is configured to detect position information of the electronic device based on a signal output by a satellite. The communication unit is configured to communicate with another device. When the at least one processor determines that detection accuracy of the position detector has deteriorated when a detecting function of the position detector is valid, the at least one processor reduces communication with the another device.

Abstract: Systems and methods for monitoring worker movement within a warehouse setting are provided. According to one implementation, a wearable apparatus comprises an audio unit configured to receive audio input signals from a user and convey audio output signals to the user. Also, the wearable apparatus includes a step count unit configured to detect walking movements of the user.

Abstract: Cross traffic alert system for a host vehicle engaged in a forward or reverse gear position, includes an object detection sensor configured to detect relative positions of a plurality of target objects present in a coverage zone proximate the vehicle, and a processor for receiving the target positional data, detecting established environmental states based on the received data, and classifying a driving environment (e.g., road, parking lot, etc.) based on the detection or not of established environmental states. Threshold alert areas are dynamically adjustable in the coverage zones based on the classified driving environment, where indications of targets in the alert areas may be generated.

Abstract: The present disclosure relates to a vehicle tracking method, a computer readable storage medium, and an electronic device. The method includes: determining a predicted value of state information of a target tracking vehicle based on a sequential Kalman filtering model according to a most recently acquired tracking value of the state information of the target tracking vehicle, wherein the state information at least includes location information; obtaining a detected value of the state information of the target tracking vehicle; and in response to the obtained detected value, acquiring a new tracking value of the state information of the target tracking vehicle based on the sequential Kalman filtering model according to the detected value and the most recently determined predicted value. Through the above technical solution, the tracking value of the state information of the target tracking vehicle may be determined more accurately.

Abstract: A distance measuring device according to an embodiment includes a first device including a first transceiver configured to transmit a first known signal and a second known signal and receive a third known signal corresponding to the first known signal and a fourth known signal corresponding to the second known signal, a second device including a second transceiver configured to transmit the third known signal and the fourth known signal and receive the first and second known signals and a calculating section configured to calculate a distance between the first device and the second device on a basis of phases of the first to fourth known signals, and the first transceiver and the second transceiver transmit/receive the first and third known signals one time each and transmit/receive the second and fourth known signals one time each, performing transmission/reception a total of four times.

Abstract: The invention present application relates to a method for determining a current position (xk+1, yk+1) of a motor vehicle relative to an initial position (xk, yk) previously held by the motor vehicle. Changes in the wheel position between the initial position (xk, yk) and the current position (xk+1, yk+1) are measured for at least two wheels of the motor vehicle. A motion vector of the motor vehicle is individually calculated from each of the wheel position changes. The individual motion vectors are then averaged. The current position (xk+1, yk+1) is then determined by adding the averaged motion vector, which, starting from a reference direction, has been rotated by a yaw angle of the motor vehicle, wherein the yaw angle is determined using a yaw rate provided by a yaw rate sensor of the motor vehicle. The invention also relates to a position determination system and to a motor vehicle equipped with such a system.

Abstract: A method is disclosed for group ranging in a wireless network. The wireless network comprises a plurality of nodes, including an initiator node and a plurality of responder nodes. The method includes performing, for each frequency in a plurality of frequencies, a measurement procedure involving a two-way phase measurement between the initiator node and each of the responder nodes. The measurement procedure includes the initiator node transmitting a carrier signal having the frequency, each responder node of the plurality of responder nodes receiving and performing a phase measurement of the carrier signal, each responder node of the plurality of responder nodes transmitting a carrier signal having the frequency, and the initiator node receiving and performing a phase measurement of the carrier signal. The method further includes calculating, between the initiator node and each responder node of the plurality of responder nodes, a distance, based on the performed two-way phase measurements.

Abstract: Provided is a method for determining positions of one or more target receivers, wherein the one or more target receivers and one or more reference receivers receive a plurality of signals transmitted at unknown times from a plurality of sources that are located at unknown positions and not synchronized with each other. The method includes: obtaining times of arrival of the plurality of signals at the one or more target receivers; obtaining a plurality of times of arrival of the plurality of signals at the one or more reference receivers; and computing, based on the plurality of times of arrival of the plurality of signals at the one or more reference receivers, a plurality of reference positions of the one or more reference receivers, and the times of arrival of the plurality of signals at the one or more target receivers. The method may include determining directions of the plurality of sources.

Abstract: The present invention provides a method for reducing a wireless positioning error by a target node in a multi-node system. Specifically, the method comprises the steps of: receiving information on the positions of anchor nodes from the anchor nodes, respectively; performing ranging of each of the anchor nodes; and when the target node is in a first state, transmitting information on the position of the target node to neighboring nodes except for each of the anchor nodes. The target node is capable of communicating with at least one of another target node, a target node related to an autonomous driving vehicle, a base station or a network.

Abstract: A method for generating data indicative of a customer interaction with a product on display includes acquiring, by one or more sensors attached to a product on display in a product display area, sensor data; wirelessly transmitting the sensor data to at least one wireless receiver located in the vicinity of the product display area; and transmitting the sensor data from the at least one wireless receiver to a computer. The method further includes executing, by the computer, a machine learning algorithm in order to determine that a potential customer has interacted with the product on display and to generate insights about an interaction between the customer and the product on display.