195 results about "Direct path" patented technology

The invention discloses a dynamic channel transmission characteristic optimization method for a boundary layer meteorological observation aircraft, and the method comprises the steps: supposing that a direct path between a transmitting end and a receiving end is shielded by an obstacle in the air-to-ground communication in a boundary layer in which the meteorological observation aircraft participates; and one part of the signal sent by the transmitting end is reflected to the receiving end through the moving scatterer, and the other part of the signal directly reaches the receiving end without interference. According to the invention, a communication environment between a mobile transmitting terminal and a mobile receiving terminal is described by adopting a geometric stochastic modeling mode, a DRL enabling boundary layer meteorological observation aircraft channel transmission characteristic dynamic optimization method based on geometric characteristics is established, and a nonlinear relationship between motion characteristics of a meteorological observation aircraft and a channel model is revealed. The method has important application value for evaluating the performance of the air-to-ground wireless communication system in the DRL auxiliary boundary layer.

Embodiments of the present disclosure relate to methods and apparatuses for a connection handling mechanism in a Layer-2 (L2) UE-to-network (U2N) relay case in a communication system. According to an embodiment of the present application, a user equipment (UE) includes a transceiver and a processor coupled to the transceiver; and the processor is configured to: access a network node over an indirect path associated with a source relay node; in response to reception of a radio resource control (RRC) reconfiguration message for path switch via the transceiver from the network node, perform a path switch procedure from the indirect path to a target path, wherein the target path is a direct path between the UE and the network node or is another indirect path between the UE and the network node associated with a target relay node; and receive data via the transceiver from the source relay node over a source link between the UE and the source relay node during the path switch procedure.

The invention refers to a method performed by a wireless device, remote UE (10), wherein the remote UE (10) is connected to a cell established by a base station, gNB (50), wherein the UE performs the steps of: maintaining a first and a second communication path, wherein each the first and the second communication path is either a direct path (110), where the communication is exchanged directly between the remote UE and the gNB, or an indirect path (120, 130), wherein the communication is exchanged between the UE and the gNB via a relay UE (20, 30); determining that one of communication paths becomes or will become unavailable; and activating a third communication path (140, 150) to replace the communication paths that becomes or will become unavailable; the invention further refers to corresponding methods in a relay UE and in a gNB, and to corresponding devices comprising the remote UE, the relay UE and the gNB.

In the present disclosure, as device may perform a procedure for configuring a direct path connected to a network, receive, in a radio resource control (RRC) connected state in which the direct path is configured, configuration information regarding an indirect path between the device and the network, and receive a sidelink message from another device configured as a relay device for the indirect path, wherein, based on failure information being included in the sidelink message from the another device, the device may perform bearer suspension for a first bearer related to the indirect path.

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.

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.

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.

Embodiments of this application provide a multi-path configuration method, an apparatus, and a system, to provide a procedure in which remote user equipment (UE) establishes a plurality of paths by using a single path. The method includes: A first terminal device receives a first message from a network device through a first path, where the first message indicates the first terminal device to establish a second path between the first terminal device and the network device, and the second path is different from the first path; the first terminal device establishes the second path in a second cell by using the first message; and the first terminal device maintains a media access control (MAC) entity, where the MAC entity is used by the first terminal device to communicate with the network device through a direct path in the first path or the second path.

Disclosed in the present invention is an active and passive collaborative sensing fusion method for a dual-function radar communication system. The method comprises: 1, embedding a dedicated sensing symbol in a signal sent by a base station; 2, using an optimization problem to solve power distribution; 3, a receiving access point receiving a passive sensing signal, and using a whitening filter to process direct path interference, such that the direct path interference becomes white noise; 4, the receiving access point using a generalized likelihood ratio detector to determine whether there is a target, and then the receiving access point and the base station transmitting a binary decision result and a target detection probability to a fusion center; and 5, the fusion center performing vote aggregation on received information, and determining whether there is a target. The present invention can improve the accuracy and efficiency of target detection, target positioning and environment information acquisition and reconstruction, and may significantly improve the performance of a wireless communication sensing network.

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 embodiment of the invention provides a communication method and device, a storage medium and a program product, relates to the technical field of communication, and is used for improving the robustness of a network in a multi-path communication scene. The method comprises: receiving a first configuration message from an access network device, the first configuration message being used for configuring a plurality of communication paths between a remote terminal and the access network device, the plurality of communication paths comprising a direct path and a plurality of indirect paths; and communicating with the access network device based on the first configuration message.

An acquisition unit in a control apparatus acquires information about interference received, from a signal transmitted from a non-terrestrial network apparatus, by a signal directly transmitted from a non-terrestrial network apparatus to a terminal apparatus. A path control unit selects a usage communication path from a direct path and an indirect path, based on the information about the interference. The “direct path” is a path in which a signal is directly transmitted from the non-terrestrial network apparatus to the terminal apparatus. The “indirect path” is a path in which a signal transmitted from the non-terrestrial network apparatus indirectly reaches the terminal apparatus via an RIS of a terrestrial relay apparatus.

A data transmission method is disclosed. The method includes: transmitting, by a first terminal, data with a network-side device through a multi path, wherein the multi path comprises a direct path through which the first terminal is in directly communication with the network-side device and / or an indirect path through which the first terminal is in communication with the network-side device via a second terminal; and suspending, in a case that the first terminal detects that a first path of the multi path fails, data transmission through the first path.

The invention discloses a low-orbit satellite propagation channel modeling method. The method comprises the following steps: generating an optimal signal propagation path from a satellite to a target receiving point by adopting an RRT algorithm; simulating propagation of a direct path component and a multipath component according to a Corazza model; attenuation simulation is carried out on the direct path component according to Lognormal distribution; time delay distribution simulation is carried out on the multipath component, and reflection, refraction and scattering conditions in an actual space environment are simulated to determine amplitude and phase changes of the multipath component; synthesizing the direct path component and the plurality of multipath components; doppler frequency shift is calculated, and distribution of the Doppler frequency shift is simulated by using Gaussian distribution; and constructing a low-orbit satellite propagation channel model based on a synthesis result of the direct path component and the plurality of multipath components and additive Gaussian white noise. According to the method, by accurately simulating the multi-path effect and Doppler frequency shift, important theoretical basis and practical guidance are provided for design and optimization of a wireless communication system, and the performance and reliability of the system in a complex environment are remarkably improved.

The invention provides a switching method and device, a storage medium and a program product, relates to the technical field of communication, and is used for reducing network interruption duration in a switching process of cross-access network equipment. The method comprises: a source access network device sending a switching request message to a target access network device, the switching request message being used for requesting to switch a first terminal to the target access network device; wherein the first terminal is connected with the source access network equipment through a first path and a second path, the first path is a direct path between the first terminal and the source access network equipment, and the second path is an indirect path through which the first terminal is connected with the source access network equipment through the second terminal; and receiving a switching request response from the target access network equipment.

The embodiment of the invention relates to a method and equipment for multi-path transmission. Embodiments of the present application provide a user equipment (UE) comprising: a transceiver configured to receive one or more information reports regarding one or more relay nodes from a base station (BS) or one or more relay nodes; and a processor coupled to the transceiver and configured to: select at least one path from two or more paths between the UE and the BS for data transmission based at least in part on the obtained one or more information reports, wherein the two or more paths comprise one or more indirect paths corresponding to the one or more relay nodes and at least one direct path between the UE and the BS.

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.

Processing sound signals acquired by at least one microphone, to locate a sound source emitting from a plurality of discrete positions at respective discrete points in time, in a space comprising at least one planar reflective surface. The method includes: obtaining: a first vector {right arrow over (u)}0(k) determining a direction of a first acoustic path, direct between the source and the microphone, a second vector {right arrow over (u)}n(k) representing a second acoustic path resulting from a specular reflection and arriving at the microphone, and a delay τn(k) of second path at the microphone, compared to the direct path; exploiting a property of the specular reflection according to which a Euclidean distance between two positions of the source at two discrete points in time is equal to a Euclidean distance between two respective positions of images of the source and derived from one or more same reflections, respectively at said two discrete points in time.

The invention relates to a model-based method for determining false detections during radar detections in radar data, in conjunction with cross paths which arise on account of different transmit and receive angles of paths for a radar target, in which method a radar cube having range-Doppler cells is generated by Fourier transform on the basis of the radar data, wherein first a range and then a Doppler Fourier transform is carried out, such that channel data are thereby available for each range-Doppler cell, wherein false detections are determined via the channel data of a plurality of neighbouring range-Doppler cells, in that multi-dimensional models for multipath propagation spanning said range-Doppler cells are used to determine the detection parameters range, Doppler and angle of the detections, wherein the following models are used as models for multipath propagation: - a multipath model, which comprises a direct path, an indirect path and an associated cross path for a radar target; and / or - a cross path model, which comprises only one cross path for a radar target (and no direct or indirect path); and / or - a plurality of individual target models, which comprise a plurality of direct independent paths or a plurality of independent radar targets.

The invention discloses a UWOC system optimal relay position determination method based on an AUV relay in a complex marine environment, and belongs to the technical field of underwater wireless optical communication. According to received signals of a UWOC system at a relay node and a destination node in a complex ocean fading environment with underwater obstacles, an average outage probability mathematical expression Pout (psi s, psi d) of a two-hop UWOC system working in an R-space for AUV relay is solved, namely, the system outage probability is a binary function of a source elevation angle psi s and a destination elevation angle psi d. And calculating a change curve of Pout (psi s, psi D) along with the target elevation angle psi d in a mode of fixing the source elevation angle psi s, and searching the psi d corresponding to the minimum value of the outage probability of the system, so as to obtain the optimal relay position of the AUV corresponding to different source elevation angles psi s. According to the method for determining the optimal relay position of the UWOC system based on the AUV relay provided by the invention, a strategy of optimal position layout can be carried out on the AUV mobile relay node on a communication link with direct path obstacles and complex ocean fading, so that reference is provided for upper network planning of the system.

The invention provides a touring route planning method and device, and belongs to the technical field of route planning, and the method comprises the steps: 1, constructing a GIS map of an amusement place, and marking entrances and exits, intersections and amusement points as point locations with unique identifiers; 2, connecting the point locations to generate directed paths, wherein the directed paths comprise a one-way path and a two-way path; 3, calculating a shortest path between any two point locations by adopting a Floyd algorithm, and generating a shortest path set RS; and 4, receiving a starting point, an ending point and a traversal point position set input by the user, and generating a planning route through an optimal path point bridging and correction algorithm. According to the touring route planning method and device provided by the invention, the touring route which covers all specified point locations, is shortest in path and minimum in repetition and adapts to dynamic requirements can be quickly generated.

To provide a terminal device, a method, and an integrated circuit, capable of efficiently performing communication control.SOLUTION: A terminal device that communicates with a base station device, is configured to: when detecting a radio link failure of a direct path, determine whether or not an indirect path change procedure is in progress; and based on determining that the indirect path change procedure is not in progress, report the radio link failure of the direct path to the base station device. Therein: the direct path is a path that connects to the base station device via a Uu interface; and the indirect path is a path that connects to the base station device via a relay terminal device.SELECTED DRAWING: Figure 10

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.

Embodiments of the present disclosure relate to a method and apparatus for handling the coexistence of single-hop remote UE and multi-hop relay UE. According to some embodiments of the disclosure, a UE may: access a BS via a direct path; and establish a PC5 connection with a second UE to enable the second UE to access the BS via the UE, wherein the UE supports at least a multi-hop relay connection and the second UE supports a single-hop relay connection.

Embodiments of the present application relate to methods and apparatuses for a relay link change and path switching to a relay UE. According to an embodiment of the present application, a user equipment (UE) includes a transceiver and a processor coupled to the transceiver; and the processor is configured to: receive a radio resource control (RRC) reconfiguration message from a network node, wherein the RRC reconfiguration message includes one of: a relay link change indication if the UE accesses the network node over both a direct path between the UE and the network node and a first indirect path between the UE and the network node associated with a source relay UE; and a path switching indication to a candidate relay UE if the UE accesses the network node over the direct path, the first indirect path, or both the direct path and the first indirect path; and perform relay link change or path switching based on the RRC reconfiguration message. According to another embodiment of the present application, a source network node includes a transceiver; and a processor coupled to the transceiver; and the processor is configured to: transmit a handover request for a path switching operation to one or more candidate network nodes, wherein the handover request includes ID information of a requested target UE served by a target network node; receive a response message from the one or more candidate network nodes, wherein the response message includes ID information of at least one candidate relay UE; and transmit an RRC reconfiguration message associated with the at least one candidate relay UE to a remote UE.

Provided is a systolic array including a plurality of sub processing element (PE) arrays, wherein each of the plurality of sub PE arrays is configured to receive an input signal and to generate an output signal based on the received input signal, and a plurality of output direct path (ODP) circuits is configured to operate in a first mode and in a second mode, wherein an ODP circuit of the plurality of ODP circuits receives the output signal of a previous sub PE array of the plurality of sub PE arrays, wherein the ODP circuit provides the output signal to a next sub PE array of the plurality of sub PE arrays in the first mode, and wherein the ODP circuit outputs the output signal in the second mode.

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.

The invention relates to a device (1) for the chromatic confocal measurement of a parameter of a surface (2) of a sample, the device comprising: a light source (4) configured to generate an illumination light beam (6); an axial chromatic lens (8) configured to apply the illumination light beam (6) to the surface (2) of the sample and to retransmit a backscattered light beam from the surface (2) of the sample to a measurement arm (10), wherein the measurement device comprises a splitter block (20) configured to direct two reflections in a beam splitter (23) to what is referred to as a reflected beam from among the illumination light beam (6) and the backscattered light beam (9), and wherein an optical compensator is (24) arranged in the direct path of the other beam.

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.