281 results about "Direct path" patented technology

Embodiments of the present application relate to methods and apparatuses of handling a mobility configuration upon a reception of a notification message in a layer-2 (L2) UE-to-Network (U2N) relay case. According to an embodiment of the present application, a user equipment (UE) includes a processor and a transceiver coupled to the processor: and the processor is configured: to access a serving cell via a direct path or an indirect path, wherein the indirect path is associated with a relay UE; and to receive an radio resource control (RRC) reconfiguration message via the transceiver from the serving cell, wherein the RRC reconfiguration message includes at least one indication of: a measurement configuration; a conditional handover (CHO) configuration associated with at a candidate cell; an indication indicating whether the UE is triggered to report a measurement result of a candidate relay UE in response to identifying a cell change of the candidate relay UE; or a relay operation related configuration used by remote UE in response to accessing the serving cell via the indirect path.

Disclosed in the present invention are an intelligent communication countermeasure method and a system. The method comprises: acquiring geographic locations of a transmitter and a receiver of a communication party, calculating a channel function of each channel, and constructing a communication party utility model; acquiring the geographic location of a jammer, calculating the gain of each channel, and constructing a jammer utility model; constructing a communication countermeasure process on the basis of a Stackelberg game theory, taking the communication party as a leader in the game process, and taking the jammer as a follower in the game process; and when the utility of the communication party and the utility of a jammer party finally converge after multiple rounds of games, outputting policies of the communication party and the jammer party in a stable state. According to the present invention, an intelligent reflecting surface is introduced into the communication party, the intelligent reflecting surface reflects useful signals on the basis of the location of the receiver, and signals of a direct path and a reflection path are mutually counteracted by changing phases of jamming signals, so as to suppress the jamming signals, thereby effectively improving the anti-jamming capability of the communication party.

Embodiments of this disclosure provide a method and apparatus for transmitting failure information and a system. The method for transmitting failure information includes: transmitting configuration information to a remote user equipment, the configuration information including information for adding and / or modifying and / or deleting a path, the path being a direct path and / or an indirect path between the remote user equipment and a network device.

A multi-path configuration apparatus, includes: a transmitter configured to transmit configuration information to a remote terminal equipment, the configuration information including information for adding a path such that the remote terminal equipment and a network device are connected via more than one path, the path being a direct path and / or an indirect path between the remote terminal equipment and the network device.

This application discloses a multi-path establishment method, a terminal, and a network side device, and belongs to the wireless communication field. The multi-path establishment method in an embodiment of this application includes: receiving, by a first terminal through a first path to a first base station, path addition signaling sent by the first base station, where the first path is a direct path between the first terminal and the first base station, the path addition signaling carries an identifier of a second terminal through which a second path passes, and the second path is an indirect path between the first terminal and the first base station.

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.

The invention relates to an optimal path selection method for data exchange in a cross-network scene, and belongs to the field of computers. The method comprises the following steps of: initializing a communication relationship among nodes in all network systems exchanged and associated across the network systems into a data exchange routing information table; enumerating a switching path and calculating a path length; obtaining QoS attribute vectors of the enumerated exchangeable path link, including response time, reliability and stability, as link quality parameters, and meanwhile, comprehensively forming an exchange path attribute parameter by taking an exchange path length as a security evaluation factor; weight is distributed to each parameter, and optimal path calculation is carried out, so that the optimal path of data exchange in the cross-network scene is obtained. According to the method and the device, the data exchange can be completed when the direct path is blocked in the cross-network scene without opening the exchange link, so that the economic cost caused by opening the link and the time overhead of offline exchange can be effectively saved.

Embodiments of the present application relate to methods and apparatuses for handling establishment and failure in a multi-path case. According to an embodiment of the present application, a user equipment (UE) includes a processor and a transceiver coupled to the processor; and the processor is configured: to access a serving cell of a network node via a path, wherein the path is a direct path or an indirect path between the UE and the network node; to receive configuration information regarding a path addition procedure via the transceiver from the network node, wherein the path addition procedure is for adding a further path between the UE and the network node; to initiate the path addition procedure; and to start a timer related to the path addition procedure.

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.

An access network device determines to add, for a remote terminal device, a direct path for connecting a first cell. The remote terminal device is connected to a second cell through an indirect path. The access network device sends an RRC reconfiguration message to indicate the remote terminal device to switch to the direct path. The RRC reconfiguration message further indicate not to release the indirect path. When being indicated to switch to the direct path, the remote terminal device may further be indicated not to release the indirect path.

The invention discloses a fading characteristic analysis method for signal transmission in a cascade channel and a related product, and relates to the technical field of wireless communication. The method comprises the following steps: acquiring values of a first parameter, a second parameter and a third parameter of each channel in cascade channels; the first parameter represents the propagation characteristic of the signal under the influence of the nonlinear effect; the second parameter represents the relative intensity between the direct component and the scattering component in the corresponding channel; the third parameter represents the number of the multipath clusters in the corresponding channel; inputting the values of the first parameter, the second parameter and the third parameter of each channel into a product distribution model, and determining the fading characteristics of the cascade channels through a probability density function and a cumulative distribution function in the product distribution model; the product distribution model is used for depicting the fading behavior of the multipath cluster signal containing the direct path when the multipath cluster signal passes through the cascade channel under the effect of the nonlinear effect. The method can simulate the fading behavior of a multipath cluster signal containing a direct path when the multipath cluster signal passes through a cascade channel under a nonlinear effect.

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.

Embodiments of this disclosure provide a multi-path configuration method and apparatus and a system. The multi-path configuration method includes: transmitting configuration information to a remote terminal equipment, the configuration information including information for adding and / or modifying and / or deleting a path, the path being a direct path and / or an indirect path between the remote terminal equipment and a network device.

Provided herein are examples of bead worn supports, such as eyewear, configured to provide passive venting by providing pathways between a lens and a frame and / or by providing a smooth anterior profile to allow a laminar flow of air on an anterior surface of the lens. The pathways through the frame and lens of the eyewear can be configured such that they do not provide a direct path to the eye of a wearer. The headworn supports provided hemin can provide venting while reducing or preventing unwanted light, particles, or other debris from contacting the eye of the user. The headworn supports can also be configured to exhibit excellent ballistic performance.

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.

The invention discloses an inter-symbol interference elimination method and system for an ultra-large time delay air-ground communication scene, and the method comprises the steps: calculating a needed guard interval length before a signal is transmitted; acquiring a received signal; wherein the received signal comprises an improved data frame; the improved data frame comprises a front grouping training sequence and a rear grouping training sequence which are consistent in unit sequence length, and a guard interval; calculating a direct path Doppler frequency deviation estimation value by combining the front grouping training sequence; calculating a reflection path Doppler frequency offset estimation value in combination with the post grouping training sequence; determining a reflection path time delay estimation value in combination with the reflection path Doppler frequency offset estimation value and the guard interval length; and eliminating inter-symbol interference according to the calculated estimated value to obtain an orthogonal frequency division multiplexing symbol. According to the invention, the inter-symbol interference of a high-mobility, large-time-delay and high-speed air-ground cruise scene can be stably and efficiently eliminated, and the method can be widely applied to the technical field of communication.

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 maximum multipath time delay calculation method based on propagation path length in an offshore sight distance range. The method comprises the following steps: when an electric wave for communication between a first ship and a second ship is propagated through a direct path, obtaining the length of the direct path for propagation of the electric wave within a seaborne sight distance range based on the height of a transmitting antenna, the height of a receiving antenna and the distance between the first ship and the second ship. The method solves the problems that in an existing marine sight distance communication scene, due to the fact that signals of a transmitting end reach a receiving end through a direct path and multiple reflection paths, the lengths of all the paths are different, the time for the signals to reach the receiving end is different, multi-path time delay is generated, large multi-path time delay will cause inter-symbol interference, and the communication performance is poor. The signal quality of a receiving end is reduced, the bit error rate is increased, and the system performance is further reduced.

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.