677results about "Beacon systems using radio waves" patented technology

The invention relates to a wireless system and methods for managing and / or configuring ranging capable devices to form a ranging constellation to support ranging-based positioning services. Multiple challenges in improving configuration and management of the ranging constellation are described.

The invention proposes a transmitter (such as a gateway or base station, both indoors and outdoors) that actively creates multiple virtual anchors which are associated with certain known reflectors by means of a code, to allow low-capability receivers to be localized more easily. By measuring propagation features, such as, e.g., timing of receipt, of three or more coded beams, low capability receivers—even those with only a single antenna—can be localized, e.g., by the transmitter or by the receivers themselves. The receivers might localize themselves if each beam includes e.g. the location of the anchors, the location of transmitter, and the sending time. This has the advantage that the receivers do not have to send any information back to the transmitter.

Techniques and apparatuses are described for determining a position of user equipment by using adaptive phase-changing devices. In aspects, a base station transmits wireless signals for a UE toward respective reconfigurable intelligent surfaces (RISs) of adaptive phase-changing devices. The APDs may direct reflections of the wireless signals in a direction, such as toward the UE, based on a configuration of the RIS of the APD. The base station receives, from the UE via a wireless connection, identifiers of the reflections of the wireless signals that are received by the UE. In some cases, the base station also receives a signal quality parameter associated with the reflection reaching the UE. The base station determines angular information based on the respective identifiers and / or signal quality parameters of the reflections. Based on the angular information and known positions of the APDs, the base station determines a position of the UE.

Embodiments include methods, performed by a network node, for providing positioning assistance data to one or more user equipment (UEs) in a wireless network. Such methods include determining an angular resolution of angular positioning assistance data for each particular beam of a plurality of beams transmitted by one or more transmission reception points (TRPs) in the wireless network. Such methods also include transmitting, to one or more UEs, the angular positioning assistance data for the plurality of beams. For each particular beam, the angular positioning assistance data includes a first part having a first resolution and, when the determined angular resolution for the particular beam is greater than the first resolution, a second part having a second resolution that is greater than the first resolution. Other embodiments include complementary methods performed by a UE, as well as network nodes and UEs configured to perform such methods.

Disclosed are techniques for communication. In an aspect, a first node determines equiphase contour information associated with an antenna of the first node at one or more carrier frequencies, and transmits an indication of the equiphase contour information to a second node. In another aspect, a device determines equiphase contour information associated with an antenna of a first node at one or more carrier frequencies, and corrects measurement information associated with a carrier phase-based position estimation session based at least in part on the equiphase contour information.

The invention provides an RFID trajectory tracking system based on least square speed adaptation, and the method comprises the steps: firstly building a half-wavelength observation distance expansion model, and effectively solving the problem of error divergence caused by a conventional phase unwrapping scheme; then, generating an initial position candidate set by using a triangular centroid weighting algorithm, performing instantaneous speed estimation by using a least square algorithm, and introducing a dynamic threshold-weight constraint mechanism to obtain a high-quality initial state set; thirdly, speed estimation based on least square is fused in the EKF, speed data are updated through the least square method before each round of antenna scheduling is started, target tracking trajectories estimated based on different initial positions are obtained, and the problem that in the target tracking process, the speed suddenly changes or the tracking error is large during steering is solved; and finally, dynamically deleting the tracking trajectory with the zero weight, and selecting the trajectory with the maximum weight value as the final tracking trajectory of the target, thereby effectively reducing the calculation complexity of the algorithm. The invention provides an RFID trajectory tracking system which is convenient and simple to deploy, can realize trajectory tracking of a target tag, and is suitable for most indoor positioning scenes.

In an aspect, a communications device obtains a residual AoA bias associated with a first AoA measurement of a RS-P transmitted from a wireless reference node to a first base station, the wireless reference node associated with a location known to the communications device, obtains a second AoA measurement associated with an uplink signal (e.g., PRACH, SRS, UL-SRS-P, etc.) transmitted from a UE to the first base station, and calibrates the second AoA measurement based on the residual AoA bias. In another aspect, a communications device obtains a residual AoD bias associated with a first AoD measurement of a RS-P transmitted from a first base station to a wireless reference node with a known location, obtains a second AoD measurement associated with a downlink signal (e.g., DL-PRS) transmitted from the first base station to a UE, and calibrates the second AoD measurement based on the residual AoD bias.

Disclosed herein are an apparatus and method for providing crosswalk pedestrian guidance based on an image and a beacon. The method for providing crosswalk pedestrian guidance based on an image and a beacon may include estimating a walking location based on a beacon signal corresponding to at least one traffic light and first-person view sensor information, analyzing a hazard factor around a pedestrian based on an image acquired from a camera corresponding to the traffic light, predicting a hazard around the pedestrian in combination by considering together the walking location, the hazard factor, and status information of the traffic light, and providing walking guidance to a pedestrian guidance terminal based on the predicted hazard around the pedestrian.

The present invention generally relates to a system and method for determining characteristics of traveling ionospheric disturbances (TIDs), and more particularly to a method and system for real time mapping of corresponding ionospheric perturbations, where in the case where the amplitude of each wave represents a height change, then the output field is truly a three dimensional representation of the height perturbations of an iso-ionic contour caused by the TIDs.

A method for reporting positioning measurement information, a terminal, and a network device are provided. The method includes: receiving first configuration information from a network device; and reporting a measurement result of a beam group based on the first configuration information, where the beam group is used to transmit a positioning reference signal PRS, and the beam group includes N beams determined by reference signal received power RSRP or time of arrival TOA, where N is a positive integer, the N beams are beams in a first cell, and the first cell is one of cells participating in positioning.

A method for positioning reference signal configuration comprises receiving, from a network node, one or more first positioning reference signals in a first PRS configuration; performing one or more first measurements on the first PRS to determine one or more first characteristics of the one or more first PRSs; sending, to the network node, a second PRS configuration determined based on the one or more first characteristics; receiving, from the network node, a third PRS configuration, wherein the third PRS configuration comprises one or more third PRSs having at least one different signal characteristic than the one or more first characteristics of the first PRS; and performing one or more second measurements on the one or more third PRSs. The method provides a dynamic configuration for PRS based on the feedback from the UE and a location node, beamforming configuration, or any requirements for physical layer efficiently.

The invention provides an unmanned aerial vehicle positioning method and system based on a wireless positioning beacon and a program product, and relates to the technical field of unmanned aerial vehicle positioning, and the unmanned aerial vehicle positioning method comprises the steps: obtaining the first position information of the wireless positioning beacon, the second position information of an unmanned aerial vehicle, and the measurement distance information between the wireless positioning beacon and the unmanned aerial vehicle; determining a relative error vector of the unmanned aerial vehicle relative to the wireless positioning beacon based on the measurement distance information, the first position information and the second position information; and determining relative position information between the unmanned aerial vehicle and the wireless positioning beacon based on the relative error vector.

A controller for a working vehicle is configured or programmed to, when an attachment is attached to a hitch, if the controller succeeds in selecting one of one or more pieces of identification information that is included in one of one or more wireless signals transmitted from one or more transmitters in or on one or more attachments and received by a receiver according to a predetermined condition, perform a predetermined process based on the selected piece of identification information, and if the controller fails to select any of the one or more pieces of identification information, select, according to a predetermined condition, one of the one or more pieces of identification information that is included in one of the one or more wireless signals received by the receiver when the working vehicle takes action and perform the predetermined process based on the selected piece of identification information.

A controller is configured or programmed to cause a first memory to store, for a period of time, piece(s) of identification information included in wireless signal(s) transmitted from transmitter(s) in or on attachment(s) and received by a receiver in or on a working vehicle, when one of the attachment(s) is attached to a hitch, select a piece of identification information of the attachment attached to the hitch from the piece(s) of identification information stored in the first memory and start a predetermined process according to the selected piece of identification information, and even if the receiver receives wireless signal(s) before the attachment is allowed to be detached from the hitch, continue to perform the predetermined process without performing selection of a piece of identification information again.

Co-channel beacon transmissions are provided with at least one of spectral redundancy and temporal redundancy. A receiver produces a snapshot of a superposition of received co-channel beacon transmissions. Subcarrier demodulation, code nulling, or a Class-C linear minimum-mean-square error (MMSE) operation separates multiples ones of the co-channel beacon transmissions or eliminates inter-symbol interference and inter-subcarrier interference in the snapshot. Receiver operations can be performed at a network user, a network node, or a network operations center.

The invention discloses a self-adaptive optimization method for a heading beacon directional diagram. The method comprises the following steps: initializing LOC antenna array element parameters and obstacle parameters; calculating the angle range of the LOC antenna radiation field influenced by the obstacle; respectively designing expected directional diagrams of CSB signals and SBO signals radiated by the LOC antenna; the directional diagrams of CSB signals and SBO signals radiated by the LOC antenna are adaptively optimized; and evaluating the channel performance of the optimized optimal directional diagram. According to the method, the characteristic of robustness of the adaptive processing technology is fully utilized, the feed amplitude and the feed phase of the heading beacon antenna are adaptively calculated according to the area range of the radiation field influenced by the obstacle, and the horizontal guiding performance of an existing dual-frequency heading beacon system on an airplane can be improved on the premise that the number of antenna array elements is not increased. When the course beacon system is installed and debugged, the feed amplitude and phase can be adjusted in a self-adaptive mode according to the airport environment, and the installation and debugging workload is reduced.

The present application provides a method and system for predicting the maintenance time of an omnidirectional beacon device, which relates to the field of aviation navigation technology and is used to improve the accuracy of predicting the maintenance time of an omnidirectional beacon device. The method includes: obtaining the monitoring data of the omnidirectional beacon ground station and obtaining the operation data of the omnidirectional beacon ground station; the omnidirectional beacon receiver operating in the aircraft calculates the relative position of the operating aircraft according to the monitoring data and the operation data respectively; determining whether the omnidirectional beacon device is abnormal based on the absolute position and the relative position of the operating aircraft; if it is abnormal, obtaining the historical operation data and historical climate data of the omnidirectional beacon ground station or the omnidirectional beacon receiver in a preset time period; determining the feature vector matrix according to the historical operation data and historical climate data in the preset time period; inputting the feature vector matrix into the omnidirectional beacon device maintenance time prediction model to predict the maintenance time of the omnidirectional beacon device.

A beacon-based approach guidance system is disclosed. A disclosed method includes digitizing at least one signal received at an antenna array of a receiver of a vehicle to digitized data streams of I and Q samples, the at least one signal received from a beacon, the at least one signal modulated with a pseudorandom code at the beacon, correlating the I and Q samples to a locally generated pseudorandom code of the receiver to recover carrier signals, and calculating, based on relative phase characteristics of the recovered carrier signals, a direction of arrival of the at least one signal from the beacon in a vehicle reference frame.

Implementations described herein provide systems, methods, and devices for vehicle occupant detection based on wireless transmission(s) from one or more wireless transmitter devices (e.g., beacons) located in the vehicle. The wireless transmitter devices can be standalone devices, such as portable low energy beacons, and / or the wireless transmitter devices can be integrated into other components of the vehicle, such as an on-board dash computer or a door handle. The systems disclosed herein receive the wireless transmission and determine transmission metrics associated with the transmission, such as a signal strength value or a transmission angle. A driver status determination and / or a passenger status determination is based on the transmission metrics. A data file converter generates a driver status data file representing the driver status determination and / or the passenger status determination. The driver status data file is sent to an application for which the driver status data file is configured.

Various example embodiments relate to positioning of a target node. A positioning report may comprise positioning assistance measurements from the target node and at least one anchor node, wherein the positioning assistance measurements are associated with angular differences between a pair of uplink and / or downlink transmission and / or reception beam directions. Apparatuses, methods, and computer pro-grams are disclosed.

A mobile device and base station are enabled to support improved positioning accuracy in the presence of phase noise in high frequency radio network, such as in 5G New Radio network operating in mm Wave. Phase Tracking Reference Signal (PTRS) may be transmitted with Positioning Reference Signals (PRS) and used for positioning and / or used to correct the phase offset between symbols in the PRS (1302). A request may be made to transmit PTRS alone or with the PRS, or that the PRS is transmitted with a specific PRS frame structure, e.g., with a specific comb value, that minimizes the impact of phase noise. The PTRS or a phase ramp of the staggered symbols in the PRS may be used to estimate and correct the phase offset (1304, 1306).

Embodiments of the present disclosure relate to methods, devices and computer readable media of communication. A network device determines information of a repeater device and an indication indicating whether the repeater device is used for communication between the network device and a terminal device, and transmits the information of the repeater device and the indication to a positioning device for positioning the terminal device. In this way, positioning accuracy may be improved.

A method for reporting positioning measurement information, a terminal, and a network device are provided. The method includes: receiving first configuration information from a network device; and reporting a measurement result of a beam group based on the first configuration information, where the beam group is used to transmit a positioning reference signal PRS, and the beam group includes N beams determined by reference signal received power RSRP or time of arrival TOA, where N is a positive integer, the N beams are beams in a first cell, and the first cell is one of cells participating in positioning.

An apparatus for a wireless communication system is provided. The apparatus is to transmit a reference signal on a common set of resource elements (REs), the common set of resource elements being used by one or more further apparatuses in the wireless communication system, so that the reference signal of the apparatus and one or more further reference signals of the one or more further apparatuses use the same resource elements. Moreover, the apparatus is to transmit the reference signal depending on a base sequence or a sequence derived from the base sequence and depending on a set of configuration parameters.

The invention provides an unmanned aerial vehicle positioning method and system based on a wireless positioning beacon and a program product, and relates to the technical field of unmanned aerial vehicle positioning, and the unmanned aerial vehicle positioning method comprises the steps: obtaining the first position information of the wireless positioning beacon, the second position information of an unmanned aerial vehicle, and the measurement azimuth angle information of the unmanned aerial vehicle relative to the wireless positioning beacon; based on the first position information and the second position information, calculating azimuth angle information of the unmanned aerial vehicle relative to the wireless positioning beacon is determined; determining corrected azimuth angle information of the unmanned aerial vehicle relative to the wireless positioning beacon based on the measured azimuth angle information and the calculated azimuth angle information; and determining relative position information between the unmanned aerial vehicle and the wireless positioning beacon based on the corrected azimuth angle information.

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.

The invention pertains to a method for continuously determining a position of one or more moving vehicles of a fleet of vehicles, the fleet of vehicles including a primary vehicle (10) and one or more subordinate vehicles (11), the primary vehicle being equipped with a reference positioning system comprising one or more components - e.g., GNSS antennas - (51, 52), the reference positioning system providing reference position information regarding a position in a reference coordinate system, the method comprising: providing an anchor module (2) at the primary vehicle, comprising at least three radio-frequency sensors (21, 22, 23) that are positioned on the primary vehicle with a known spatial relationship to one another and to the one or more components, each of the radio-frequency sensors being configured to emit and receive radio signals; providing a tag module (3) on each of the subordinate vehicles (11), each tag module being configured to emit and receive radio signals; and at least a first ranging process for continuously determining the position of a first subordinate vehicle, wherein the first ranging process comprises: determining a position of the radio-frequency sensors in the reference coordinate system; exchanging a set of radio signals between a first tag module on the first subordinate vehicle and each of the radio-frequency sensors; calculating a time of flight of each set of radio signals; calculating a distance (d1, d2, d3) between the first tag module and each of the respective radio-frequency sensors based on the determined time of flight of the respective set of radio signals; deriving a position of the first tag module and / or the first subordinate vehicle in the reference coordinate system based on the calculated distances; and providing a report signal indicating the derived position of the first subordinate vehicle.

The invention discloses a personnel protection system and method applied to a coal mine tunneling robot and a medium, mainly relates to the technical field of coal mine tunneling robots, and aims to solve the problems that existing personnel easily enter a robot operation area by mistake, personal protection equipment focuses on post-event protection and lacks the beforehand early warning and active protection capabilities, and in addition, the personnel protection efficiency is greatly improved. According to an existing scheme, only a single environment parameter or a robot state is concerned, and the influence of various environment factors and robot operation states on personnel safety is not comprehensively considered. Comprising the steps that a central processing module determines whether environment abnormity exists; according to the robot coordinate, the robot relative velocity vector, the position coordinate of the operator and the operator velocity vector, whether the operator is in a dangerous state is determined; determining whether the robot operates abnormally; obtaining an abnormal analysis result, and issuing the abnormal analysis result to a protection control module; and the protection control module is used for determining a corresponding preset protection processing program according to the exception analysis result.

This invention discloses a frequency-hopping method and apparatus for magnetic field quality assessment based on radio electromagnetic positioning, relating to the field of radio electromagnetic positioning. The method includes: constructing and calibrating a radio electromagnetic positioning system to obtain a calibration coefficient matrix; traversing each group of excitation signals in the signal combination, inputting the excitation current corresponding to the three different frequencies of excitation signals in each group of excitation signals to the transmitting module; acquiring the induced voltage generated by the receiving module and performing a Fourier transform to obtain a voltage amplitude matrix; calculating the corresponding magnetic flux density matrix based on the voltage amplitude matrix and the calibration coefficient matrix; constructing and solving an objective equation based on the vector formed by the magnetic flux density matrix and its singular values ​​to obtain three singular values; calculating the magnetic field quality coefficient corresponding to each group of excitation signals based on the three singular values, and determining the operating frequency of the radio electromagnetic positioning system for electromagnetic positioning. This invention solves the problem of increased positioning errors caused by magnetic field distortion.

A method of estimating a relative position of a first robot with respect to a second robot at a current timestamp, wherein a first ultra-wideband (UWB) tag is installed on the first robot, the first UWB tag being a rotating tag configured to move in a circular path about a centre of rotation on the first robot, wherein a second UWB tag is installed on the second robot, the method comprising: receiving an estimate of the relative position of the first robot with respect to the second robot calculated at an earlier timestamp; obtaining rotating tag offset values of the first UWB tag with respect to the first robot at the earlier timestamp and at the current timestamp; obtaining a velocity value of the first robot at the earlier timestamp; obtaining a velocity value of the second robot at the earlier timestamp; obtaining distance values between the first UWB tag and the second UWB tag at the earlier timestamp and at the current timestamp; and calculating the relative position of the first robot with respect to the second robot at the current timestamp according to: the estimate of the relative position calculated at the earlier timestamp, the rotating tag offset values of the first UWB tag with respect to the first robot at the earlier timestamp and at the current timestamp, the velocity values of the first robot at the earlier timestamp, the velocity values of the second robot at the earlier timestamp, and the distance values between the first UWB tag and the second UWB tag at the earlier timestamp and at the current timestamp.