167 results about "Beam switching" patented technology

The invention belongs to the technical field of satellite communication, and discloses a satellite communication beam switching method. The positions of a satellite and an aircraft are determined under a geocentric inertial coordinate system, an elevation angle is calculated, and visible wave beams are screened to form a neighbor cell list. And screening out a candidate beam list from the neighbor cell list based on the received power threshold. And if the list is not empty, constructing a decision matrix containing the receiving power, the signal-to-noise ratio, the number of available channels and the satellite residual service time for each candidate beam. And objectively calculating the weight of each performance index based on a matrix by using a CRITIC method. And by using the weight, a TOPSIS model based on Tanimoto similarity optimization is adopted to calculate the relative close degree of each candidate wave beam. And finally, selecting the candidate beam with the maximum relative closeness as the optimal beam to trigger switching. According to the method, through the objective weight and the optimization model, unnecessary frequent switching is reduced, and the communication stability and the system resource utilization rate are improved.

The invention discloses a portable multi-band unmanned aerial vehicle interference method and system based on a directional antenna array, and belongs to the field of unmanned aerial vehicle countering. The invention discloses a portable multi-band unmanned aerial vehicle interference method and system based on a directional antenna array. The method comprises the following steps: detecting and tracking a multi-sensor fused target; generating a multi-band interference signal; multi-band signal interference based on a directional antenna array; the system comprises a detection and tracking module, a signal generation and processing module, a directional interference array module, a main control and interaction module and an integrated platform and support module. The problems that in the prior art, a high-speed maneuvering unmanned aerial vehicle is difficult to track, and a modern unmanned aerial vehicle using multiple communication frequency bands at the same time cannot be effectively handled are solved. The method is high in interference efficiency and long in acting distance, wide effectiveness of unmanned aerial vehicles of different models and different communication configurations is guaranteed, multi-band coverage is achieved, the beam switching speed reaches the millisecond level through electronic beam forming, and the capacity of coping with complex targets is high.

The invention provides a communication method and a communication device for a wireless access network and a core network, and the method comprises the steps that terminal equipment can determine a first reference point list, the first reference point list comprises a plurality of points where beams are projected to the ground, and a second beam is determined based on the first reference point list and the motion direction of a first satellite. When the access beam is selected, the movement direction of the first satellite is considered, so that the problem of beam switching in the access process caused by satellite movement can be avoided, a broadcast beam with the largest beam coverage range in the movement direction is selected based on the reference points in the first reference point list, and smooth access is ensured.

The invention discloses a low-orbit satellite beam switching method and a communication terminal, and belongs to the technical field of satellite communication, and the method comprises the steps: synchronously collecting real-time multi-source data; preprocessing the real-time multi-source data to obtain a real-time multi-dimensional feature vector, and based on the real-time multi-dimensional feature vector, performing link quality prediction on links of all visible beams in a period of time in the future by adopting a prediction model to obtain an updated candidate beam set, and providing a time window for decision making; and constructing a comprehensive decision function fused with a multi-dimensional optimization target, calculating a comprehensive score of the updated candidate beam set, identifying a global optimal beam, and performing switching judgment and execution. According to the invention, the switching strategy conversion from passive response to active optimization is realized, the time delay and interruption probability of beam switching are obviously reduced, and the system resource utilization rate and the communication quality are improved.

This communication device comprises: a control unit that, when a beam relating to a communication operation executed between a base station and a terminal by the communication device is switched to a first beam, sets a specific period before a first period in which the first beam is used, and switches said beam to the first beam; and a communication unit that transmits or receives a signal by using the first beam.

The invention relates to the technical field of intelligent sensors, in particular to an unmanned aerial vehicle track intelligent tracking method based on a millimeter-wave radar, which comprises the following steps: receiving echo signals collected by the front end of the millimeter-wave radar, carrying out constant false alarm rate detection and Doppler frequency shift extraction on the echo signals, generating an unmanned aerial vehicle target space coordinate set, and carrying out target tracking on the unmanned aerial vehicle. And mapping the target space coordinate set of the unmanned aerial vehicle to a three-dimensional Euclidean space. According to the method, a non-convex optimization objective function containing beam switching time cost and precision constraint is constructed, and mathematical optimal solution of radar beam resources is realized. The generated adaptive scheduling instruction is used for adjusting the pulse repetition frequency and the beam residence time, it is ensured that radar front-end parameters dynamically evolve along with the target state, overall centroid tracking is emphasized for rigid body formation so as to save resources, independent high-frequency refreshing is emphasized for discrete targets so as to ensure the precision, and the accuracy is improved. And the continuity and robustness of trajectory tracking of the unmanned aerial vehicle in a complex electromagnetic environment are improved.

Various aspects of the present disclosure generally relate to wireless communication. For example, a user equipment (UE) may determine a probability of each beam in an initial set of candidate beams being a target beam (for example, a best beam given current channel conditions) according to a current source beam and one or more parameters that relate to a propagation path from a transmitter to the UE. Accordingly, the UE may select, among the beams in the initial set of candidate beams, a set of candidate beams to measure in a beam management procedure according to the respective probabilities of each candidate beam being the target beam, which may reduce power consumption at the UE, reduce a beam selection or beam switching latency, and / or improve performance associated with beamformed communications.

This invention relates to beam switching following a Listen-After-Speak (LBT) procedure. Apparatus, methods, and systems for performing beam switching after an LBT procedure are disclosed. One apparatus (500) includes a processor (505) and a transceiver (525) operable on unlicensed spectrum, wherein the transceiver (525) supports multiple device panels. The processor (505) performs (805) a first Listen-After-Speak (“LBT”) procedure using omnidirectional sensing to obtain a first Channel Occupancy Time (“COT”), and in response to a successful LBT, performs (810) a first uplink transmission of a first Transport Block (“TB”) during the first COT and using a first device panel. Here, the first uplink transmission uses a first portion of the first COT. The processor (505) performs (815) a directed LBT procedure for a second device panel to obtain the remainder of the first COT.

Some embodiments include a system, method, and computer program product for managing beam switching at a higher subcarrier spacing (SCS) at millimeter wavelength (mmWave) frequencies in a 5G wireless communications system. A user equipment (UE) transmits a beam switching gap (BSG) capability to a 5G Node B (gNB). The UE receives a transmission configuration indicator (TCI) state from the gNB, and performs a beam switch to the TCI state corresponding to a first beam. The UE can receive a first control resource set (CORESET) on the first beam and a second CORESET on a second beam where the BSG occurs between the first CORESET and a second CORESET. The UE can perform beam switching within the BSG from the first beam to a second beam, and receive the second CORESET on the second beam. The UE can determine and transmit modified candidate values of beam switching parameters to the gNB.

The application discloses a kind of distributed multi-curved surface array full airspace beam continuous control methods, comprising: setting satellite TT&C relay trigger event, trigger according to including satellite and TT&C station uplink and downlink state monitoring, orbit control instruction and pre-configured trigger instruction of switching condition;With satellite TT&C relay as the control core of random access node, utilize curved surface array tracking receiver state parameters and the partial satellite orbit information cached, based on TT&C relay trigger event, adaptively trigger curved surface array inter-beam switching process, ensure the continuous tracking of curved surface array to satellite.The present application can realize low-latency and low TT&C resource overhead distributed multi-curved surface array full airspace beam continuous control, support the low-latency TT&C relay demand of satellite in future large-scale constellation, realize on-demand switching without pre-planning, real-time capacity optimization, improve the adaptability to station network resources and the dynamic change of satellite motion state.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for faster beam switching in a wireless network. A wireless transmit / receive unit (WTRU) may receive configuration information including QCL relation information for TCI states. The WTRU may receive beam switching information indicating a first replacement RS beam is associated with a first variable RS beam. The WTRU may determine measurements using the first source RS beam which is associated with a set of RS beams, including the first variable RS beam, as a QCL source for a TCI state according to the QCL relation information. The WTRU may determine measurements using the first replacement RS beam. The WTRU may send, in response to the beam switching information, information indicating that the TCI state is updated to be associated with the first replacement RS beam as the QCL source for the first set of variable RS beams based on the measurements.

The application discloses a kind of multi-photon fiber array endoscopic imaging device and method based on hollow spiral scanning, belong to biological imaging technical field.The device includes laser collimation and beam expansion module, pulse chirp module, beam switching module, endoscopic detection module and fluorescence acquisition module.The beam switching module contains optical switch and at least two low group velocity dispersion single-mode fiber array;Endoscopic detection module drives fiber array to perform hollow spiral scanning by resonant driver, its track starting point is not located at the origin of field of view, to avoid central dense sampling.The method switches fiber by optical switch, so that each fiber performs spatial non-overlapping hollow spiral scanning, collects multi-photon signals such as fluorescence, second harmonic and fluorescence lifetime, and completes the central cavity by image reconstruction and fusion, to obtain complete field of view imaging result.The application significantly reduces the central region light damage, improves the uniformity of imaging resolution, and the fused image is based on physical sampling to ensure authenticity and reliability, with high system stability.

Embodiments of the present application provide a communication method and device, relating to the technical field of communication. The method can combine dynamic objects and static objects to predict the beam of the terminal device, thereby improving the accuracy of beam prediction and improving the link stability of vehicle networking communication. The method comprises: sending first information, the first information comprising vehicle information, position information and link quality information of the terminal device. The vehicle information is pre-set in the terminal device. Trajectory information is sent, the trajectory information comprising at least one position information of the terminal device within a first time length in the future. Third information is sent, the third information comprising information of at least one non-networked blocking vehicle, the blocking vehicle being capable of blocking the communication beam used by the terminal device. A first indication is received, the first indication being used to instruct the terminal device to perform beam switching or beam interruption. The first indication is generated by the network device according to the first information, the trajectory information and the third information.

This application discloses a method, apparatus, device, and storage medium for configuring a transmission strategy, relating to the field of wireless communication. The method, applied to a terminal device, includes: sending configuration signaling to a first terminal, the configuration signaling including a transmission strategy for an uplink channel; wherein the transmission strategy is used to determine a first transmission resource and a second transmission resource for two adjacent repeated transmissions of the uplink channel, where different transmission beams are used to transmit to different transmission points (TRPs) of the same network device; the first transmission resource and the second transmission resource have a beam switching time for switching beam directions; the first transmission resource corresponds to the earlier transmission opportunity among two adjacent transmission opportunities for uplink channel transmission; and the second transmission resource corresponds to the later transmission opportunity among two adjacent transmission opportunities for uplink channel transmission. This method can introduce beam switching time into the uplink channel transmission.

The application discloses a high-low orbit intersatellite spectrum access method based on spectrum prediction, and belongs to the field of intersatellite spectrum access. In order to solve the technical problems that the existing access method cannot adjust the access conditions in real time to carry out beam switching, causes interference to GSO satellites by accessing the channel being used by high-orbit satellites, and does not consider the minimum switching times, thereby failing to guarantee the stability of continuous communication, the technical points of the application are as follows: firstly, the occupation of the channel is predicted to serve as data input for access, and a deep reinforcement learning method is used to dynamically adjust the available channels of LEO constellation access to GSO satellite beams. In view of the complete transmission data problem of single-satellite data of the scene, the optimization target is set to minimize the satellite switching times, and the DQN algorithm is used to realize the overall long-term optimal access effect.

The utility model relates to the technical field of vehicle lamps, in particular to a double-light lens vehicle lamp adopting a direct light source to supplement light, which comprises a lens support, a vehicle lamp rear shell, a fixing support and a lens module, and a direct light source substrate, a high-beam light source substrate and a low-beam light source substrate are arranged in the vehicle lamp rear shell. The rear end of the fixing support is provided with an inclined plane substrate fixing piece for fixing the high beam light source substrate, the inclined plane substrate fixing piece is provided with a high beam reflection cup covering the high beam light source substrate, the low beam light source substrate is provided with a low beam reflection cup with a light outlet facing the lens module in a covering mode, and the front end of the fixing support is fixedly provided with a high beam switching mechanism. And a heat dissipation mechanism is arranged at the lower end part of the low-beam light source substrate. According to the utility model, the direct light source substrate can directly project light to the front and work cooperatively with the high beam / low beam light source, so that a blind area or a light fault during switching of the high beam and the low beam is eliminated, and smooth transition is realized.

The invention provides a wave beam cooperative scheduling method based on a distributed random wave beam grid, and belongs to the technical field of high-frequency-band communication. The method comprises the following steps: S1, obtaining beam feature information of UE at different positions, and constructing a beam fingerprint database; s2, when the network side receives the beam switching instruction and the UE rough fingerprint information, UE position information is acquired, and a target grid is matched according to the UE position information; s3, the network side inquires a beam fingerprint database by taking the target grid and the UE rough fingerprint information as indexes, and decides a target service beam according to a preset optimization principle; and S4, the network side instructs the UE to switch to the beam ID of the target service beam through downlink signaling, and the UE receives the instruction and directly responds to the switching command. According to the method, operations such as beam switching, optimization and interference coordination can be completed without real-time and full-amount beam scanning measurement of a user, the user experience rate is remarkably improved, the expenditure is saved, and the performance of a high-frequency-band communication system is improved.

Various solutions for mobility procedure with respect to an apparatus and a network are described. An apparatus may receive at least one candidate cell configuration comprising at least one candidate transmission-reception point (TRP) configuration, at least one candidate bandwidth part (BWP) configuration, or at least one candidate transmission configuration indicator (TCI) state configuration from a network node, wherein one of the at least one candidate cell configuration is used as a serving cell configuration. The apparatus may receive a switching command from the network node. The apparatus may perform an inter-cell TRP or beam switching, or an intra-cell TRP or beam switching according to the at least one candidate cell configuration and the switching command.

The application provides a beam switching method based on a diamond search in a high-speed moving scene and a corresponding device, wherein the method comprises the following steps: taking all fine beams in a target coarse beam where a current communication fine beam of a receiving end is located and all fine beams in at least two coarse beams adjacent to the target coarse beam as a beam range of the diamond search, determining a first target fine beam corresponding to a first radio frequency chain by using a diamond search mode, and switching a fine beam used by the first radio frequency chain by using the first target fine beam; and based on the first target fine beam, determining fine beams used by other radio frequency chains. The method can reduce a search area and a search times during beam switching, can significantly reduce beam switching complexity, can reduce beam switching time, and can guarantee normal communication quality.

This invention discloses a software-defined MF-TDMA multi-beam access method and apparatus, belonging to the field of satellite communication technology. The network control center generates software-defined control commands based on user resource requests and the overall network service load. The gateway station encapsulates the forward data according to the control commands and sends the encapsulated data to a low-Earth orbit (LEO) satellite using time-division multiplexing technology. The LEO satellite performs beam-level switching on the encapsulated data according to a beam-hopping pattern and sends the switched data to the user terminal via the corresponding downlink beam. The user terminal allocates resources based on the received data according to the control commands and sends the multi-beam uplink signal to the LEO satellite. This invention overcomes the shortcomings of existing static or semi-static resource allocation methods in terms of insufficient dynamic adaptability. It can flexibly schedule resources according to user requests and the overall network service status, significantly improving resource utilization, enabling flexible beam switching, and effectively improving transmission efficiency.

The utility model relates to the technical field of vehicle lamps, in particular to a double-light-lens vehicle lamp which comprises a vehicle lamp front shell and a vehicle lamp rear shell which are arranged front and back, a lens is sleeved on the front end portion of the vehicle lamp front shell, and a fixing support is connected between the vehicle lamp front shell and the vehicle lamp rear shell. A high beam switching mechanism arranged behind the lens is fixed to the front end of the fixing support, a radiator is arranged in the automobile lamp rear shell, a cooling fan is arranged at the lower end of the radiator, the front end of the radiator is concaved downwards to form a step, and a high beam light source substrate and a prism arranged above the high beam light source substrate in a covering mode are fixed to the step. The prism is arranged right behind the high beam switching mechanism, a high beam shading plate covers the prism, a low beam light source substrate is fixed to the upper end of the radiator, and a low beam reflection cup with a light outlet facing the lens covers the low beam light source substrate. According to the automobile lamp, high-beam and low-beam efficient switching can be achieved, meanwhile, the brightness of a low-beam mode is enhanced through auxiliary lighting, and the overall performance and practicability of the automobile lamp are improved.

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). In an embodiment of the disclosure, the method performed by a base station is provided. The method comprises transmitting to an UE a RS for at least one of a direct BS candidate beam and an RIS candidate beam and receiving from the UE a measurement report comprising a RSRP. In case that the RSRP meets the RSRP criteria, the method comprises selecting a first mode configuration for the RIS among a plurality of mode configurations for the RIS based on a link between the BS and the UE. The method comprises switching from the RIS candidate beam to direct BS candidate beam and scattering the multiple beams from the RIS in different directions.

An uplink channel transmission method, performed by a terminal device, including: performing two adjacent repetitive transmissions of same data in an uplink channel on a first transmission resource and a second transmission resource respectively; where the two adjacent repetitive transmissions use different transmitting beams to transmit to different Transmit-Receive Points (TRP) of a same base station, a beam switching time for switching a beam direction is presented between time-domain resources of the first transmission resource and the second transmission resource; the first transmission resource corresponds to a former transmission occasion in two adjacent transmission occasions for uplink channel transmitting; the second transmission resource corresponds to a latter transmission occasion in the two adjacent transmission occasions for uplink channel transmitting.

Aspects of the present application relate to communication between the transmitter and the receiver regarding the association between channel paths and beams. One of the transmitter and the receiver may process parameters and measurements received from the other of the transmitter and the receiver. A result of the processing may be that given beams are associated with given channel paths. One of the transmitter and the receiver may use the information for beam switching / tracking / refinement and beam failure recovery.

The invention provides a measurement content indication method, equipment and device and a storage medium, and the method comprises the steps that a terminal transmits a measurement report related message to network equipment; the measurement report related message comprises measurement content indication information, and the measurement content indication information is used for indicating that the measurement related message is related to an MIMO measurement report process or an LTM measurement report process. Therefore, under the condition that the terminal simultaneously triggers the MIMO measurement reporting process and the LTM measurement reporting process, the network equipment can also determine whether the measurement reporting related message sent by the terminal is related to the MIMO measurement reporting process or the LTM measurement reporting process, thereby ensuring that the network equipment timely triggers cell switching or beam switching. And the beam switching time delay / cell switching time delay caused by the fact that the network equipment cannot distinguish various measurement results reported by the terminal is further reduced.

Disclosed is a method comprising transmitting a beam switch request from a first distributed unit to a second distributed unit. The first distributed unit then receives a beam switch acknowledgment from the second distributed unit. The first distributed unit transmits a beam switch notification to a central unit, wherein the first distributed unit and the second distributed unit are at least partly controlled by the central unit. The first distributed unit further transmits a beam switch command to a terminal device.

In order to reduce power consumption, an access node may turn off transmissions from one or more rows or columns of antennas in a mMIMO array. To help prevent the beam from overshooting (i.e., going beyond) an intended area of coverage when the access node turns off transmission by one or more rows, the access node also increases the electrical down tilt of the beam (i.e., angle of depression) to help contain the beam within its intended area of coverage. To help prevent problems with SSB beam selection and / or beam switching, when the access node turns off transmission by one or more columns, the access node reduces the number of SSB beams that are transmitted while sweeping SSBs over the sector thereby reducing the overlap of the (now) wider SSB beams.

This application discloses a downlink hybrid beamforming precoding method, apparatus, and active antenna unit (AAU). The method involves: obtaining a first channel estimation matrix from the uplink signals transmitted by a terminal device using antenna units connected to multiple digital receiving channels. This achieves uplink channel estimation in a single uplink channel measurement, reducing resource consumption compared to related technologies that require multiple analog beam switching measurements. Then, the analog beamforming weights are obtained from the hybrid digital-analog precoding matrix obtained through matrix decomposition. The channel estimation for the corresponding analog beam is removed from the first channel estimation matrix to obtain a second channel estimation matrix. Beamforming is performed based on the second channel estimation matrix to obtain the digital beamforming weights. Downlink hybrid beamforming precoding is then performed on at least one hybrid digital-analog transmit channel based on the digital and analog beamforming weights, reducing complexity and achieving superior hybrid beamforming performance.