105 results about "Direct path" patented technology

In the present disclosure, a method of transmitting a signal by a user equipment (UE) may comprise performing a procedure for configuring an indirect path to a network; and transmitting, to the network, at least one buffer status report (BSR) including a buffer status related to the indirect path, wherein, based on the UE being configured to report both a BSR related to a direct path and a sidelink (SL) BSR related to the indirect path to the network, a specific buffer status related to the indirect path may be excluded from the SL BSR.

The present application relates to methods and apparatuses for simultaneous transmission on multiple paths. One embodiment of the present disclosure provides a relay user equipment (UE), which includes: a transceiver: and a processor coupled with the transceiver and configured to: receive configuration information associated with a data radio bearer (DRB) of a remote UE; and receive, from at least one of a base station (BS) or from the remote UE, a first indication indicating activation or deactivation of a simultaneous transmission on multiple paths of the DRB of the remote UE, wherein the multiple paths include at least a direct path and an indirect path.

The invention provides a passive positioning method based on a wireless fidelity (Wi-Fi) beam forming feedback information (BFI). The passive positioning method comprises the following steps of: firstly, carrying out passive positioning on the basis of the Wi-Fi beam forming feedback information (BFI); the method comprises the following steps: firstly, pre-determining the position of a transceiver, and respectively extracting BFIs of a direct path and a target reflection path of the transceiver; compared with extraction of channel state information (CSI), the BFI is inherent information in a Wi-Fi communication protocol, special acquisition hardware does not need to be additionally deployed, the BFI can be directly extracted from the communication process, the hardware cost and the deployment threshold of a positioning system are greatly reduced, and large-scale popularization and application are easier to realize. And secondly, by constructing a BFI covariance matrix, high-dimensional matrix operation in a traditional MUSIC algorithm is converted into low-dimensional matrix processing, and the calculation complexity is remarkably reduced. And finally, constructing a spectral function to respectively obtain an angle of departure (AOD) of a direct path of the transceiver and a target reflection path and a flight time difference of the two paths, substituting the parameters into the elliptic constraint model for calculation, and finally solving to obtain an estimated position of the target. According to the method designed by the invention, the real-time performance and the deployment flexibility of the system are greatly improved under the condition that the calculation complexity is remarkably reduced and the support of specific hardware is not needed.

The invention provides a beam forming method and device, equipment and a medium. The beam forming method comprises the following steps: receiving a first transmitting signal sent by a base station, a first echo signal of a to-be-positioned target to the first transmitting signal and a first direct path signal received by the base station; and determining a first beam forming matrix sent by the base station to the user based on the first transmitting signal, the first echo signal and the first direct path signal. According to the method, the problem of phase asynchronization between the transmitting signals of the antennas is solved, and the robustness of the system is further enhanced and the positioning precision is improved through the beam forming matrix, the resource allocation scheme obtaining and the fine design of the beam.

The embodiment of the invention provides a multi-path communication method and device. And the remote terminal equipment receives an RRC reconfiguration message which is sent by the network equipment and is used for increasing or changing the indirect path through the direct path, and sends an RRC reconfiguration completion message to the network equipment through the direct path, therefore, the network equipment can know whether the remote terminal equipment successfully executes the configuration in the RRC reconfiguration message or whether the indirect path is successfully increased or changed, so that the remote terminal equipment and the network equipment have consistent understanding on the configuration of the remote terminal equipment, and subsequent configuration conflicts or configuration errors are avoided.

Techniques are described herein for providing bi-directional path selection based on indicated path preferences in policy data. Such techniques may be performed by a network node and may comprise generating a set of paths to a destination, a first path of the set of paths being labeled as a direct path and a second path of the set of paths being labeled as an indirect path. Such techniques may subsequently comprise receiving a communication from a source and directed to the destination, determining, based on a first indicated path preference for the destination and a second indicated path preference for the source, a path category, selecting a forwarding path as one of the first path or the second path based on the determined path category, and routing the communication to a next hop in the selected forwarding path.

The invention discloses a satellite signal processing method and device, equipment and a storage medium, and the method comprises the steps: determining the interference intensity of a satellite signal inputted by an antenna through a control chip, and determining the interference state of the satellite signal according to the interference intensity; according to the interference state, path switching is carried out through a radio frequency switch to determine a target path, and the target path comprises a high-precision straight-through path or an anti-interference path; and processing the satellite signal through the target path and sending the satellite signal to a positioning receiver. The interference intensity of satellite signals is monitored, different target paths are switched through the radio frequency switch according to different interference states, and the satellite signals are processed through the determined target paths, so that an anti-interference path is adopted when positioning is influenced by strong interference, and the positioning accuracy is improved. And a high-precision straight-through path is adopted without being influenced by strong interference, so that dynamic balance of precision and anti-interference is realized, and a single antenna takes into account two use scenes of high-precision positioning and anti-interference.

In the present disclosure, a method of receiving a signal by a first user equipment (UE) in a wireless communication system, may comprise performing a first configuration procedure for a direct path to a base station (BS); performing a second configuration procedure for an indirect path to the BS, based on a second UE connected to the BS; and receiving, from the BS, a paging signal through at least one of the direct path and the indirect path, wherein, based on that a common search space (CSS) set for paging is configured in an active bandwidth part (BWP) of the direct path, the paging signal may be received through the direct path, and wherein, based on that the CSS set for paging is not configured in the active BWP of the direct path, the first UE may request the second UE to relay the paging signal from the BS through the indirect path.

A communication method and apparatus are disclosed, applicable to the field of communication technology. In this method, a first apparatus determines the time delay from when the first network device sends the first reference signal to when the terminal device receives the first reference signal, and the time delay from when the terminal device sends the second reference signal to when the first network device receives the second reference signal, based on a phase measurement obtained from a first reference signal received by a terminal device from a first network device, a phase error obtained from the direct path signals corresponding to the first signal sent and received by the terminal device, a phase measurement obtained from a second reference signal received by the first network device from the terminal device, and the phase error obtained from the direct path signals corresponding to the second signal sent and received by the first network device. Using the time delays determined by this method to locate the terminal device improves positioning performance.

The invention provides an RIS-based TOA anchor-point-free relative positioning method, a medium, equipment and a product, and relates to the technical field of wireless positioning, and the method comprises the steps: deploying a wireless network comprising a to-be-positioned node of an RIS; bidirectional TOA distance measurement is carried out between two nodes, and the distance between a direct path and an RIS reflection path represented by time is obtained based on signal receiving and transmitting time; measuring in a two-dimensional coordinate system of the wireless network to obtain a distance between a direct path and a reflection path represented by coordinates; constructing an initialized node coordinate equation based on the distance between the direct path and the reflection path represented by time and coordinates, and constructing a maximum likelihood function based on the distance between the direct path and the reflection path represented by the coordinates; a maximum likelihood function is utilized to convert a solving problem of node coordinates into a least square problem, a gradient descent method is utilized to obtain positioning of the node coordinates, and iteration is stopped when a convergence criterion is met or a maximum iteration step is reached. The method is high in positioning precision.

Example embodiments of the present disclosure relate to a first UE, a second UE, a method, an apparatus, and a computer readable medium for indirect path failure procedures caused by a Uu link problem of a relay UE (e.g., LTM of the relay UE) in a multipath scenario. In this solution, in response to a first message (notification or release message) received from a second UE (relay UE), the first UE (remote UE) may send a second message to the BS via a direct path, and the second message may include a measurement result. Thus, the BS may know the indirect path failure information and may further use the measurement results to perform further operations. Accordingly, communication for a remote UE may be ensured, and communication efficiency may be improved.

This invention discloses a flexible connection anti-tampering component, a dedicated housing, and an assembly method, belonging to the field of anti-theft and anti-tampering fastener technology. Addressing the industry shortcomings of existing flexible connector locking structures, which only employ exposed, simple combinations without dedicated protective structures, resulting in easy disassembly with tools and adhesive removers, concealable restoration after disassembly, and easy theft and substitution of goods leading to economic losses, this invention adopts the following technical solution: The component includes a first main body, a second main body, a limiting area, a locking and fixing part, an ejector part, and a flexible connector. The housing has a sized through-hole, and the limiting area fully covers the locking area formed by the flexible connector and the locking and fixing part. Utilizing the deformable characteristics of the flexible connector, the ejector part inside the housing pushes the flexible connector to form an irregular bend, completely blocking the direct path of tools from the housing opening to the locking area. A half-type rigid protective housing and standardized assembly process are provided, and a disposable anti-counterfeiting and anti-restore component is provided at the seam of the housing. This invention can be adapted into various forms such as through-and-through, single-through, and wrap-around, to meet the anti-theft binding needs of multiple scenarios. It has a simple structure and is easy to mass-produce.

The invention discloses an indoor positioning method based on two-dimensional sparse array signals. The method comprises the following steps: firstly, deploying a pair of equipment carrying a commercial Wi-Fi network card (Intel 5300) indoors, and configuring and acquiring channel state information (CSI) under multi-time snapshots in a form of'single transmitting antenna + three receiving antennas'; secondly, inhibiting phase distortion in the CSI data by using a linear fitting preprocessing method; thirdly, partitioning the total CSI data according to time snapshots, and inputting the total CSI data into a two-dimensional sparse iteration covariance estimation algorithm to estimate a multipath signal angle-time delay parameter; and finally, through a clustering algorithm, locking direct path features and completing accurate positioning. According to the method, the number of array elements of the receiving array is virtually expanded by using the subcarriers, the bottleneck of limited physical array elements of commercial Wi-Fi equipment is broken through, the positioning precision is greatly improved, the deployment cost is low, the compatibility is high, and the method is suitable for indoor positioning and other scenes.

The application belongs to the technical field of indoor positioning, and particularly relates to a CSI-based indoor high-precision positioning method of a sensing-integrated system, comprising the following steps: S1: an algorithm initialization stage, signal preprocessing is performed; S2: an SVM is used to identify and classify a LoS path, according to a received signal, accurate identification and classification of the LoS path are realized; S3: according to the number of LoS paths, a corresponding positioning method is adopted to obtain a user position; and S4: output of the user position. The application considers the influence of non-direct paths in a complex indoor environment, and based on the CSI characteristics of ISAC signals, through fingerprint and model dual-mode positioning, the signal classification process is mainly to identify whether the signal received by the receiver is a LoS signal through a support vector machine, and the fingerprint positioning is used to accurately determine the position of the user, the algorithm has the advantages of high positioning precision, low complexity and suitability for complex indoor environments, and has a bright future in future indoor positioning.

The application provides a tour route planning method and device, belonging to the technical field of path planning, the method comprises the following steps: step 1: constructing a GIS map of a recreation place, marking the entrance, intersection and play point as a point with a unique identifier; step 2: connecting each point to generate a directed path, the directed path includes a one-way path and a two-way path; step 3: calculating the shortest path between any two points by using the Floyd algorithm to generate a shortest route set RS; step 4: receiving the starting point, ending point and traversal point set input by the user, and generating a planned route through the optimal path point bridging and correction algorithm. The tour route planning method and device provided by the application can quickly generate a tour route covering all specified points, with the shortest path, the least repetition and dynamic requirements.

The invention provides a remote management system and method which can more reliably grasp the state of an object such as a fender while avoiding restrictions of wireless communication, and which can suppress energy consumption in a grasp step. A sensor (2) operated by a battery (4) and a transmission / reception terminal (3) are provided to each fender (9), and when transmission of detection data (M) detected by each sensor (2) to a relay device (5A) by radio waves (W) from each transmission / reception terminal (3), the detection data (M) are transmitted to the relay device (5A) by means of communication based on a predetermined LPWA communication standard. When the communication strength (S) between each transmission / reception terminal (3) and the relay device (5A) is equal to or greater than a reference value (Sc), transmission is performed via a direct path (Rd) from each transmission / reception terminal (3) to the relay device (5A), and when the communication strength (S) is less than the reference value (Sc), transmission is performed via a direct path (Rd) from each transmission / reception terminal (3) to the relay device (5A). A detour path (Rb) of another transmission / reception terminal (3) exists between each transmission / reception terminal (3) and the relay device (5A) for transmission, a management index based on the detection data is stored in the server (5B), and the management index is displayed on specific devices (6a, 6b, 6c) capable of accessing the server (5B).

The application provides a kind of air-ground channel modeling method suitable for millimeter wave phased array, comprising: step 1, establishing the Two-Ray channel geometric model of direct path and multiple reflection paths;Step 2, according to the geometric model, calculate the Rician factor;Step 3, according to the geometric model, determine the time delay of the reflection path;Step 4, according to the carrier frequency and the speed of motion, determine the Doppler frequency offset of the direct path;Step 5, according to the geometric model and Jacks distribution, determine the Doppler power spectrum of the reflection path;Step 6, based on the generalized stationary uncorrelated scattering model, establish the channel model. Through the application, a high-accuracy phased array air-ground channel model can be established, by considering the departure angle of the phased array transmitting antenna and the arrival angle of the receiving antenna in the air-ground channel model, the accuracy of the Rician factor calculation and the accuracy of the Doppler spread power spectrum in the fading channel can be improved.

The invention discloses a three-dimensional indoor positioning method based on visual sense and 5G sensing fusion, and relates to the technical field of indoor positioning and space perception. The method comprises the following steps: modeling an indoor reflecting surface to obtain a virtual anchor point; a user azimuth vector detected, identified and tracked by a camera target is projected to a scene reflection surface to construct a candidate reflection path and identify a direct incidence path, and the candidate reflection path and the direct incidence path are mapped to a beam codebook of a base station, so that a beam search range is narrowed, and a higher angle resolution is obtained; the user terminal establishes a communication link through the reference signal, and the base station acquires channel state information; in the channel parameter processing stage, angle and time delay estimation is carried out on channel parameters; an estimation result is matched with a direct or virtual anchor point path, and pseudo paths which do not conform to scene constraints are eliminated, so that a direct path and an effective reflection path are distinguished; the position of the user is jointly solved by using multi-angle constraints formed by the direct path and the reflection path, and continuous estimation of the three-dimensional position of the user is realized by combining a filter.

This invention relates to a method for improving the accuracy of UWB positioning data, belonging to the field of precise positioning technology in mines. Specifically, the method involves: setting a noise threshold and an empirical medium constant at the positioning receiver, while the positioning system receives the positioning signal; determining whether multipath effects exist in the received signal; if multipath effects exist, calculating the probability PT of no direct path extraction, and using PT to determine whether a direct path is not extracted due to an excessively high noise threshold; the positioning algorithm performs positioning calculations on the successfully extracted direct paths to obtain positioning coordinates (x0, y0, z0); and feeding the positioning coordinates (x0, y0, z0) into a Kalman filter algorithm for filtering to obtain the filtered result (x0, y0, z0). n+1 ,y n+1 ,z n+1 By comparing (x0, y0, z0) and (x n+1 ,y n+1 ,z n+1 The system determines whether the current positioning data is reliable; if the positioning data is reliable, the positioning value is optimized using Kalman filtering, and the current positioning ends. This invention can improve the accuracy and reliability of UWB positioning data, and improve the precision of underground mine positioning.

This application discloses a path establishment method including: determining, by first user equipment (UE), based on a transmission path configuration of a signaling radio bearer SRB1 carrying Uu signaling, whether to send a PC5 radio resource control RRC message to relay UE, where the PC5 RRC message is used to trigger the relay UE to enter a connected state; where a transmission path corresponding to the transmission path configuration of the SRB1 carrying Uu signaling includes at least one of the following: an indirect path between the first UE and a network-side device, and a direct path between the first UE and the network-side device; where the indirect path includes a PC5 link between the first UE and the relay UE and a Uu link between the relay UE and the network-side device.

Systems, methods, apparatuses, and computer program products for controlling the PDCP level data split from a remote UE over MP. One method may include a user equipment, receiving a message from a network entity comprising an indication of a path control via a configured grant, and, based at least in part on the indication of the path control via the configured grant, performing data transmission over at least one of a direct path with the network entity and an indirect path with the network entity via a relay user equipment.

The application discloses a GNSS-R height measurement method and product fusing direct reflection signal separation and strategy switching mechanism, and the method comprises the following steps: step 1: obtaining the unmanned aerial vehicle flight height estimation H from GNSS satellite ephemeris data and the receiver position; step 2: judging whether H is less than the low-altitude height threshold value, and if yes, turning to step 3; otherwise, extracting the delay difference of direct reflection signal peak value to reverse the flight height, and ending; step 3: fitting to obtain the direct path initial parameter including the direct path delay; step 4: reconstructing the main path waveform and stripping to obtain the residual waveform; step 5: searching for the local peak value in the residual waveform to obtain the residual signal energy ratio index SRRM, judging whether the SRRM value is lower than the threshold value, and if yes, recording the reflection signal delay and turning to step 6, otherwise, turning to step 5 to find the secondary peak; step 6: obtaining the flight height from the delay difference of the direct reflection signal; and step 7: verifying the consistency of the flight height and H, and if the verification is satisfied, ending, otherwise, turning to step 5 to find the secondary peak.

This invention discloses a reinforcement learning-based method for optimizing the performance of FAS-assisted satellite-to-ground communication. In air-to-ground communication, when the direct path is blocked by obstacles, the signal is transmitted through a mixture of reflection from moving scatterers and the direct path. This invention describes the communication environment between the mobile transmitter and the ground user through geometric stochastic modeling, establishes a dynamic optimization framework based on FAS, couples satellite motion characteristics with adjustable FAS parameters to construct a three-dimensional channel model, designs an improved Memetic PPO reinforcement learning algorithm to dynamically optimize the FAS configuration set at the ground user in the discrete action space through a local search mechanism, and jointly optimizes channel capacity and modeling accuracy to generate the optimal strategy. This method reveals the nonlinear relationship between satellite motion and channel characteristics, significantly improves communication performance in complex obstruction environments, provides a new method for dynamic channel optimization of satellites, and has significant application value.

Methods and apparatus for selecting from among multiple available path for transporting messages between a train application in a head-of-train area (HOT) and a train application in an end-of-train area (EOT), the multiple paths including at least one direct path and, optionally, one or more indirect paths, each path including at least one wireless segment. A communications manager selects a path using a predetermined method that considers, optionally, how many attempts there have been to transmit an application message and one or more predetermined key performance indicators.

The invention provides a circuit board and electronic equipment. The circuit board comprises a chip and at least two groups of optical port connectors, each group comprises at least one optical port connector, a gap is formed between the two groups of optical port connectors, the chip is adjacent to the gap, and at least part of signal lines, connected with each group of optical port connectors, of the chip pass through the gap. The orthographic projections of the surfaces of the sides, facing the circuit board, of the signal lines are not crossed. By arranging the chips adjacent to the gaps, the distance between the connecting chips and each group of optical port connectors can be shortened, so that the transmission path length of high-speed signals is reduced, the insertion loss is reduced, and the signal strength and quality are improved. Meanwhile, wiring can be carried out by utilizing a gap between the two groups of optical port connectors, a shortest and most direct path is provided between the optical port connectors and a chip, projections of signal lines on a circuit board are not crossed, and the problems of discontinuous impedance and crosstalk caused by crossing of wire harnesses are fundamentally avoided.

The invention discloses a channel parameter estimation and positioning method and device for a double-end super-large-scale array, and relates to the technical field of wireless communication and signal processing, and the method comprises the steps: obtaining the observation data of a receiving end; determining a current scene based on the target distance and the Rayleigh distance, the current scene being any one of a near-field scene and a far-field scene; determining a target channel parameter estimation strategy based on the current scene; based on a target channel parameter estimation strategy, processing observation data of a receiving end to obtain a path time delay estimation value; determining a direct path and a non-direct path based on the path time delay estimation value; and positioning a target position based on the direct path and the non-direct path. Through the above mode, the observation signals received by the large-scale array of the receiving end are processed in the combined dimension of the spatial domain and the frequency domain, the angle, the time delay, the gain and the distance information of each path are accurately estimated, and the position of the target is accurately positioned according to the estimated path parameters of the direct path.

The present application relates to the technical field of communications, and discloses a sensing method and apparatus, a configuration method and apparatus, and a related device. The sensing method in the embodiments of the present application comprises: a first node acquires first configuration information, the first configuration information being used for performing a first measurement; the first node performs the first measurement to obtain first information, the first information being information related to a target path, the target path comprising at least one of the following: a multipath passing through a sensing target, a multipath passing through a first reflector, and a direct path between the first node and a second node, and the first reflector being a static reflector in the environment; and the first node acquires a sensing result on the basis of the first information.

The application discloses a non-line-of-sight vehicle target multipath perception and positioning method and device based on an OFDM signal. Utilizing a base station multi-antenna received sensing integrated signal, after static clutter suppression, candidate propagation paths are extracted in a time delay, Doppler and angle of arrival joint parameter space; according to reflection geometric constraints in a T-shaped road, the candidate paths are divided into direct paths, first wall surface first-order reflection paths, second wall surface first-order reflection paths and interference paths; a multi-target path association and pairing scoring function is established according to time delay consistency, angle consistency, Doppler consistency, path energy credibility and reflection geometric residual, adaptive pairing of multiple target corresponding reflection paths is realized; according to the pairing result, a single reflection path positioning or double reflection path weighted fusion positioning mode is adopted to estimate the position and speed of each target. The application can improve the stability and path association accuracy of multi-target positioning and speed measurement in a non-line-of-sight and weak line-of-sight mixed scene of an urban road.

Example embodiments of the present disclosure relate to a first UE, a second UE, methods, apparatuses, and computer readable medium for indirect path failure procedure due to Uu link problem of a relay UE, e.g. LTM of a relay UE, in multi-path scenario. In this solution, in response to a first message (a notification or release message) received from a second UE (relay UE), the first UE (the remote UE) may transmit a second message to the BS via the direct path, and the second message may include measurement results. As such, the BS may be aware of the indirect path failure information and may further perform further operations by using the measurement results. Therefore, a communication for the remote UE can be guaranteed and the communication efficiency can be improved.

A chromatic confocal measuring device (1) for a parameter of a surface (2) of a sample, the device comprising: a light source (4) configured to generate an illumination beam (6), an axially chromatic objective (8) configured to apply the illumination beam (6) to the surface (2) of the sample and to retransmit a backscattered beam from the surface (2) of the sample to a measuring arm (10), the measuring device comprising a beam splitter block (20) configured to make two reflections in a beam splitter (23) to a so-called reflected beam among the illumination beam (6) and the backscattered beam (9), an optical compensator (24) being disposed in the direct path of the other beam. Figure for the abbreviation: Fig. 1