992results 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.

A method includes sending, by a master beacon device and one or more beacon repeater devices, ultra-wideband (UWB) beacon frames. The UWB beacon frames are transmitted as interleaved pairs of UWB beacon frames. Each interleaved pair includes a first UWB beacon frame and a second UWB beacon frame. For each interleaved pair, the first UWB beacon frame and the second UWB beacon frame are transmitted with a master time delay. The method further includes receiving, by one or more tag devices, at least one of the interleaved pairs of UWB beacon frames.

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.

A local area network comprises a plurality of relay nodes. Each relay node comprises a first transceiver for communicating with one or more other relay nodes; a second transceiver for communicating with one or more mobile devices; a bridge for transferring data between the first and second transceivers. At least one of the relay nodes is configured to form a connection to an upstream server via a gateway to another area network. At least one of the relay nodes is configured to form a connection to the upstream server via the respective first transceiver of one other relay node, such that a single path along a chain of connections is established upstream. Each relay node is configured to transfer the data to the upstream server via the chain of connections.

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.

Systems and methods are provided for worker protection system with ultra-wideband (UWB) based anchors. A plurality of wayside units may be configured for placement on or near a track, with each wayside unit comprising one or more circuits. The wayside units may be configured to transmit and / or receive wireless signals, comprising ultra-wideband (UWB) signals. The plurality of wayside units may automatically form a work zone network comprising one or more activated wayside units from the plurality of wayside units. The one or more activated wayside units may be activated in response to at least one activation condition to a work zone in an area surrounding or in proximity to the plurality of wayside units. When the work zone network is formed, provide in the work zone network, based on communication of UWB signals, worker protection related functions within an area surrounding or in proximity to the plurality of wayside units.

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 method and system to control use of ultra-wideband (UWB) ranging by a device that has a UWB communication interface and at least one non-UWB sensor. The device may use the UWB communication interface as a basis to establish a first measurement of a change in pose of the device from a first pose to a second pose, and the device may use the at least one non-UWB sensor as a basis to establish a second measurement of the change in pose of the device from the first pose to the second pose. The device may further compare the first measurement with the second measurement and establish based on the comparison a level of UWB-ranging confidence. Further, the device may use the established level of UWB-ranging confidence as a basis to control use of UWB ranging by the 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 communication system includes: a plurality of positioning signal transmission devices that transmit positioning signals; a positioning signal reception device that receives the positioning signals; and a location calculation device that calculates a location of a terminal to be positioned on the basis of reception results of the positioning signals by the positioning signal reception device, and the plurality of positioning signal transmission devices output integrity assistance data to be used to calculate integrity of a location of the terminal to be positioned, and the location calculation device calculates integrity of a location calculation result of the terminal to be positioned by using the integrity assistance data output from the plurality of positioning signal transmission devices.

The following generally relates to using Augmented Reality (AR) to enhance the in-vehicle experience. In some examples, AR techniques are applied to provide AR indications of vehicle safety indicia to alert vehicle occupants to information that may not otherwise be perceptible. In other example, AR techniques are applied to provide emergency vehicle warnings to improve the likelihood of safe responses thereto. In yet other examples, AR techniques are applied to generated personalized outdoor displays, for example, to ameliorate conditions that may impair safe operation of a vehicle.

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).

The following generally relates to using Augmented Reality (AR) to enhance the in-vehicle experience. In some examples, AR techniques are applied to provide AR indications of vehicle safety indicia to alert vehicle occupants to information that may not otherwise be perceptible. In other example, AR techniques are applied to provide emergency vehicle warnings to improve the likelihood of safe responses thereto. In yet other examples, AR techniques are applied to generated personalized outdoor displays, for example, to ameliorate conditions that may impair safe operation of a vehicle.

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 positioning method and apparatus, and a device, a storage medium and a chip, which belong to the technical field of mobile communications. The method is executed by a terminal device, and comprises: performing positioning on a zero-power tag device according to a first wireless signal sent by the zero-power tag device (601), wherein the first wireless signal is actively emitted by the zero-power tag device after same receives a second wireless signal, or is passively sent by the zero-power tag device after same performs backscatter modulation on the second wireless signal, and the second wireless signal is used for supplying power to the zero-power tag device, or is used for waking up the zero-power tag device. The solution reduces the energy consumption of device positioning, and also expands the application scenarios of device positioning.