418 results about "Beam switching" patented technology

The invention discloses a dynamic beam adaptive optimization method for the Internet of Vehicles, and the method comprises the steps: firstly obtaining the current position, speed and driving direction of a vehicle, and carrying out the prediction of a future trajectory through combining historical trajectory information and employing a Kalman filtering technology and the like; and selecting a candidate beam direction from the predefined beam codebook. The system receives channel quality feedback information of a communication link in real time, and dynamically updates a beam forming weight based on an improved recursive least square algorithm. According to the algorithm, a composite adaptive adjustment mechanism of an error size and an error change trend is introduced, a multi-objective optimization function is constructed, and performance indexes such as link quality maximization, interference power minimization and beam switching frequency minimization are effectively balanced in a dynamic environment, so that an optimal beam direction is obtained. Finally, the real-time switching of the antenna array beams is realized through a low-overhead and low-delay control protocol. According to the method, track perception and a self-adaptive feedback mechanism are fused, and good real-time performance, stability and expandability are achieved.

The invention discloses a large-scale phased array multi-channel partition beam control method and device based on an FPGA and a storage medium. The method comprises the steps that a control instruction of an antenna control unit is acquired; analyzing the control instruction which is verified to be correct, judging an instruction type according to an analysis result, when the instruction type is a beam switching instruction, determining a beam control parameter in the instruction, and calculating a base code of the phased-array antenna according to the beam control parameter; the array elements of the phased-array antenna are divided into a plurality of areas, according to the base codes and the position coordinates of the array elements, the wave control codes of the array elements are calculated in parallel by adopting a multi-channel partitioning method, and the wave control codes are normalized and then written into a beam forming chip in parallel; and after the operation is completed, a corresponding response instruction is sent to the antenna control unit. The method has the advantages of being high in beam switching speed, small in resource consumption and good in universality, an array can form a sparse array in the mode of sending a control instruction, and therefore side lobes are restrained, and power consumption is reduced.

The disclosure relates to a communication technique for combining, with IoT technology, a 5th generation (5G) or pre-5G communication system to support a higher data transfer rate than a 4th generation (4G) communication system such as Long Term Evolution (LTE), and a system thereof. The disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety related services, etc.) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present invention, a method and apparatus for transmitting and receiving multiple data in a wireless cooperative communication system may be provided. In addition, a method for a terminal in the communication system of the present invention is characterized by comprising the steps of: sending UE capability information including beam switching-related information to a base station; receiving configuration information including information related to a control channel from the base station; receiving at least one of first control information or second control information from the base station on the basis of the information related to the control channel; identifying whether a first time offset between a first control channel and a first data channel corresponding to the first control information, and a second time offset between a second control channel and a second data channel corresponding to the second control information are smaller than the beam switching-related information; and receiving data over the first data channel or the second data channel by using default quasi co-located (QCL) information when the first time offset and the second time offset are smaller than the beam switching-related information.

The invention belongs to the technical field of radar beam control, and discloses a beam control system and method applied to a satellite-borne phased array radar antenna array plane. A hierarchical control architecture is adopted, computing resources are reasonably distributed, the beam conversion time is shortened, and universality is achieved; according to the invention, a main and standby circuit cross hot backup, series connection and parallel connection combined form is adopted at a sub-array wave control unit level, so that the number of output signals of a wave control extension set is reduced, and the system cost is reduced; component-level temperature amplitude phase compensation can be achieved, the component wave control chip collects temperature in real time and sends the temperature to the wave control unit through a BIT channel, and the wave control unit completes calculation compensation; according to the invention, subarray-level deformation phase compensation can be realized, and the wave control unit realizes deformation phase compensation at the subarray level according to the subarray deformation quantity measured by the deformation measurement system.

The invention provides a beam management method and device and a storage medium, and relates to the technical field of communication. In the beam management method, a terminal measures a first measurement object and / or a second measurement object to obtain the resource quality of the first measurement object and / or the resource quality of the second measurement object, the first measurement object is a measurement object corresponding to a current beam, and the second measurement object is a measurement object corresponding to a candidate beam; and if the resource quality of the first measurement object and / or the resource quality of the second measurement object meet the beam management condition, first information is sent to the network device, and the first information is used for one or more of reporting a beam measurement result, requesting beam measurement and requesting beam switching. Therefore, beam management is actively performed through the terminal, and the change of the channel state at the terminal side is fed back in time.

A terminal according to one aspect of the present disclosure includes a control section that, if scheduling offset between reception of a downlink control channel for communication of downlink control information for scheduling an aperiodic channel state information-reference signal (A-CSI-RS) and reception of the A-CSI-RS is less than a threshold determined on the basis of a reported period value for beam switch, and there is a different downlink signal in the same symbol as the A-CSI-RS, and the A-CSI-RS and the different downlink signal are related to the same control resource set (CORESET) pool index, gives priority to quasi-co-location (QCL) for the different downlink signal; and a receiving section that receives the A-CSI-RS. According to one aspect of the present disclosure, collision between a plurality of channels / signals can be handled appropriately.

The invention provides a communication resource scheduling method and system for a low-orbit satellite, and the method comprises the steps: transmitting a spot beam to a target region by the low-orbit satellite through a directional antenna, and starting to provide communication services for all target terminals in the coverage range of the spot beam; when the preset switching period is ended, the satellite resource control center determines a new low earth orbit satellite taking over the target area according to the real-time motion information of the low earth orbit satellite; controlling the new low-orbit satellite to adjust the pointing angle of the directional antenna so as to enable the spot beam emitted by the new low-orbit satellite to cover the target area; meanwhile, beam switching instructions are generated and sent to all target terminals in batches; and all the target terminals execute a beam switching action so as to continuously provide communication services for all the target terminals through the spot beams emitted by the new low-orbit satellites. According to the invention, unified beam switching of all user terminals in the target area is realized, the situation of high concurrency of switching instructions of a satellite resource control center when the number of users is large is avoided, and the communication response speed of the users is improved.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use a first communication beam to communicate with a network entity. While using the first communication beam, the UE may determine a second communication beam for use after the first communication beam. Based on the determination, the UE may predict a change in a communication parameter of the UE associated with to the second communication beam. Before switching from the first communication beam to the second communication beam, the UE may transmit to the network entity a message that indicates the predicted change in the communication parameter and a time to switch to the second communication beam.

The invention discloses a multi-photon optical fiber array endoscopic imaging device and method based on hollow spiral scanning, and belongs to the technical field of biological imaging. The device comprises a laser collimation and beam expansion module, a pulse chirp module, a light beam switching module, an endoscopic detection module and a fluorescence acquisition module. The light beam switching module comprises an optical switch and an optical fiber array composed of at least two low-group-velocity dispersion single-mode optical fibers. The endoscopic detection module drives the optical fiber array to execute hollow spiral scanning through the resonance driver, the track starting point is not located at the view field original point, and central dense sampling is avoided. According to the method, the optical fibers are switched through the optical switch, so that the optical fibers execute spatial non-coincident hollow spiral scanning, multi-photon signals such as fluorescence, second harmonic and fluorescence lifetime are acquired, a central hole is complemented through image reconstruction and fusion, and a complete field imaging result is obtained. Light damage of the central area is remarkably reduced, the imaging resolution uniformity is improved, the fused image is true and reliable based on physical sampling, and the system stability is high.

The invention discloses a phased array distributed hierarchical control wave control system and a wave beam control method, and relates to the technical field of signal processing, the wave control system comprises a main control FPGA module, a plurality of sub-control FPGA modules and a plurality of T / R wave beam forming modules; the master control FPGA module is used for receiving a user instruction and outputting a phase shift control instruction according to the user instruction; the plurality of sub-control FPGA modules are in interactive connection with the main control FPGA module, and the sub-control FPGA modules are used for receiving the phase shift control instruction and outputting a phase shift code according to the phase shift control instruction; the plurality of T / R beamforming modules are respectively connected with the sub-control FPGA module and the antenna unit, and the T / R beamforming modules are used for receiving the phase shift codes and performing phase adjustment on the antenna unit according to the phase shift codes, so that not only can beam switching be quickly realized, but also the layout and wiring of a wave control board can be simplified, and the cost is reduced. And meanwhile, the requirements on the resources and the performance of the single FPAG and the cost of a wave control system are effectively reduced.

An embodiment receives a data stream comprising a plurality of sets of wave samples over a defined period of time, wherein receiving the data stream comprises receiving a transmitted signal at a receiver device from a transmitter device, and wherein the receiver device comprises an antenna array. The embodiment adjusts a beam shape at the receiver a number of times while the transmitted signal is being received during the defined period of time using the antenna array, wherein adjusting the beam shape a number of times produces a modulated plurality of wave samples based on different beam shapes. The embodiment determines the angle of arrival of the transmitted signal based at least in part on the modulated plurality of wave samples.

Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE transmits capability information corresponding to one or more antenna modules of the UE to a network entity. The capability information may include a quantity of boresight directions associated with each antenna module of the one or more antenna modules. The UE may receive from the network entity, after the capability information is transmitted, an indication of a beam switch and / or an antenna module switch. The beam switch indicates a switch from an active beam to a target beam. The antenna module switch indicates a switch from an active antenna module to a target antenna module.

A user equipment (UE), or other network device (e.g., next generation NodeB (gNB)) component can operate to process or configure a search space information element (IE) that is configured with at least one of: a transmission configuration indicator (TCI) state identifier (ID) of a TCI, or a physical downlink control channel (PDCCH) repetition field indicating a number of PDCCH repetitions, or a number of UE-specific search space (USS) repetitions for the PDCCH. A UE can perform search space set group (SSSG) beam switching based on one or more TCI states and at least one of: a search space set (SSS) index, an SSSG index, or a beam switching request (BSR) field value. A physical downlink control channel (PDCCH) associated with the search space can be transmitted for beam switching according to a search space information element.

Systems, methods, apparatuses, and computer program products for facilitating explicit latency mode determination in beam switching. One method may include receiving, by a user equipment, at least one beam switch command from at least one network entity. The user equipment may further determine at least one latency and switching mode, and perform beam switch based on the at least one latency and switching mode.

The invention discloses a monitoring multi-beam phased array control system based on FPGA (Field Programmable Gate Array) control, which belongs to the technical field of radars and comprises a control module, an antenna array, a memory, an upper computer and a serial port-to-parallel port communication module. According to the invention, dynamic loading and online updating of beam parameters are realized, rapid switching of multi-beam modes is supported, amplitude-phase compensation parameters stored in a memory and data of a temperature sensor are linked in real time, the duty ratio can be dynamically adjusted, the environmental adaptability of the system is improved, and the storage structure is optimized. The logic resource consumption of large-scale array control is reduced, state code real-time feedback enhances the system maintainability, and quick response and safe turn-off in a high-temperature scene are ensured in combination with over-temperature protection interruption.

Certain aspects of the present disclosure provide techniques for predictive tracking for antenna switching and beam switching in extended reality. A method for wireless communication by a user equipment (UE) includes collecting data using one or more sensors; predicting a future orientation and position of the UE based on the collected data; preparing a configuration of the UE for at least one of antenna switching or beam switching in response to the predicted future orientation and position of the UE; and performing the at least one of the antenna switching or beam switching, using the prepared configuration of the UE, in response to a detected current orientation and position of the UE.

Methods, apparatus and systems are provided for beam prediction and means for measuring a first set of reference signal resources of a configured set of reference signal resources for respective beams of a network entity for use in determining at least one predicted beam, wherein the configured set of reference signal resources are associated with prediction-based beam reporting or prediction-based beam switching; means for receiving from the network entity an indication that a target transmission configuration indicator, TCI, state corresponding to the at least one predicted beam is to be activated or indicated; means for determining, based on at least one of: the at least one predicted beam and the measured first set of reference signal resources, whether the target TCI state is known or unknown; and means for switching to the target TCI state within a time period based on a determination indicating the target TCI state is known.

Techniques discussed herein can facilitate power ramping of PRACH (Physical Random Access Channel), for example, in connection with change of best gNB (next generation Node B) Tx (Transmit) beam and / or dynamic beam switching for control and / or data channels. Power ramping techniques discussed herein can comprise techniques for determining at least one of a power ramping counter or power offset for PRACH in connection with a change in best DL (Downlink) Tx (Transmit) beam. Dynamic beam switching techniques discussed herein can comprise employing DCI comprising at least one beam indication field indicating a beam index of a new beam of a BPL (Beam Pair Link) for at least one of a data channel or a control SS (Search Space).

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 terminal beam switching method and device based on a low-orbit satellite communication system, and relates to the technical field of low-orbit satellite communication, and the method comprises the steps: responding to the position change of a user terminal, and transmitting adjacent beam measurement configuration information to the user terminal; acquiring measurement report information based on the adjacent beam measurement configuration information; determining a target beam according to the measurement report information; and sending switching information to the user terminal based on the target beam, so that the user terminal performs beam switching. The method has the effect of improving the success rate and reliability of beam switching of the terminal.

The invention discloses an uninterrupted phased array beam switching method, which relates to the field of satellite communication, and comprises the following steps: dividing a phased array antenna array plane into N independent phased array sub-arrays, arranging antenna array elements and transmitting and receiving component modules with the same number in each phased array sub-array, and configuring an independent control interface for each phased array sub-array; the wave control FPGA receives a wave beam pointing updating instruction from a satellite main control computer, analyzes a phase control value required by each phased array sub-array, and initializes a sub-array counter N to be equal to 1; and the wave control FPGA sends a phase control value to the transmitting and receiving assembly module of the Nth phased array sub-array through the Nth SPI interface, so that the Nth phased array sub-array enters a switching state, and a timer is started at the same time. According to the invention, the phased array is divided into a plurality of sub-arrays which are independently controlled, and a time-sharing switching strategy is adopted, so that the technical problem of a traditional overall switching mode in a high-speed transmission scene is effectively solved.

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.

The present application discloses a beam switching method for an intermediate node, applied to a wireless communication system. The wireless communication system includes a network device, an intermediate node apparatus, and user equipment. On a user node side, control information is received, wherein the control information includes a beam switching indication for the intermediate node; within a first threshold duration after receiving the control information, downlink control signaling and / or data are / is forwarded by using a beam controlled by an intermediate node before switching; and after a sum of the first threshold duration and a second threshold duration following receiving of the control information, the downlink control signaling and / or the data are / is forwarded by using a beam controlled by an intermediate node after switching. The present application further includes a device and system for implementing the method described. The present application solves a problem of loss of downlink control signaling and downlink data in a beam switching process of the intermediate node.

Provided are a communication method, a communication device and a computer readable storage medium, the method comprising: in response to detecting one or more switching events, sending first information, the first information being used for beam management or beam switching. The scheme provided by the invention is beneficial to reducing the time delay of beam management or beam switching.

The invention relates to a multi-beam switching antenna applied to a wind finding radar and a working method of the multi-beam switching antenna. The antenna comprises a connecting device, a feed device and a lens device, the connecting device is a subminiature push-in connector, the input end of the connecting device is connected with the wind finding radar, and the output end of the connecting device is connected with the feed device; the feed device comprises a GCPW-SIW conversion structure and a feed source antenna. Wherein the feed source antennas are sixteen antipodal Vivaldi antennas and are used for radiating spherical waves to the lens device; the lens device is a metasurface lens, and the feed device and the lens device are arranged in an offset-focus mode. Therefore, phase compensation is carried out on spherical waves radiated by a feed device located at the focus of the lens, and the spherical waves are converted into plane waves of the emergent surface of the lens. Compared with the prior art, the method has the advantages that the actual application requirement of a wind measurement radar system is met, and accurate wind field measurement and data acquisition are achieved.

The present application discloses a communication method and a related apparatus. The method comprises: a terminal device acquires first information, the first information comprising the signal quality of a wireless link between the terminal device and a network device, and / or the signal quality of a beam between the terminal device and the network device; the terminal device receives second information from the network device, the second information being related to the power margin of the network device; and the terminal device performs beam failure monitoring and recovery and / or wireless link monitoring and recovery on the basis of the first information and the second information. When the terminal device detects and recovers the beam and / or wireless link, the power margin of the network device is taken into account, so as to avoid the terminal device executing reconstruction or beam switching in advance when the network device still has the power margin, thereby reducing the network energy consumption and reducing the energy consumption loss.

Methods, systems, and devices for wireless communications are described. The described techniques provide for a user equipment (UE) to perform a UE initiated transmission configuration indicator (TCI) state management operation based on transmission of a CSI report. The UE may measure reference signals associated with a set of TCI states and may transmit a CSI report indicating one or more of the TCI states. In some cases, the UE may perform a TCI state management operation associated with the one or more TCI states without receiving control signaling from a network entity indicating to perform the TCI state management operation. In some cases, the UE may autonomously perform the TCI state management operation after a time offset from transmitting the CSI report or after a time offset from receiving a confirmation of the CSI report from the network entity.

Disclosed in the present invention is a microfluidic antenna with a reconfigurable frequency and directivity pattern. The microfluidic reconfigurable antenna consists of six parts, which are a metal floor, a metal radiation patch, a top reflector, a middle dielectric substrate, a coaxial feeder line penetrating the dielectric substrate, and an annular microfluidic channel packaged with a magnetic liquid metal column, respectively. Different modes can be excited by means of manipulating the length of the magnetic liquid metal column in the microfluidic channel, thus realizing the switching between radiation frequency bands; an antenna directivity pattern is reconfigured by means of manipulating the position of the magnetic liquid metal column; the microfluidic antenna involves main beam switching in a total of ten azimuthal planes within three bands of 5.98-6.10 GHz, 6.08-6.23 GHz and 6.85-7.47 GHz, and the maximum gain values in the states of the three bands are 8.5 dB, 7.4 dB and 8.1 dB, respectively; and the front-to-back ratios are 13 dB, 17 dB and 16 dB, respectively. The present invention has the characteristics of a simple structure, easy integration, a good performance, no introduction of extra distortion, low noise, a high-power operation capability and flexible application.