529 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 provides a broadband millimeter wave phased array dispersion effect optimization and adaptive calibration method, and relates to the field of satellite communication. According to the method, a beam pointing error of a millimeter wave satellite communication phased-array antenna caused by a dispersion effect is reduced based on a real-time delay module switched by an optical fiber and an optical switch, and a calibration interval is determined by using a vector average algorithm in combination with working frequency and bandwidth; data obtained after equiphase surface compensation is used as compensation data of a corresponding frequency band to be stored in the antenna, when the antenna works at different frequencies, the pre-stored compensation data in the corresponding frequency band is called according to polarization characteristics, and corresponding resolving phase data of each unit at the current frequency point and pointing direction are superposed to obtain an overlapped resolving phase data; and directional diagram beam pointing under the frequency point is realized. The problem that the antenna beam pointing error is caused by the dispersion of the broadband millimeter wave satellite communication phased-array antenna is solved. According to the method, the beam pointing precision of the millimeter wave satellite communication phased-array antenna is improved, and rapid frequency switching and beam switching are realized.

A user equipment (UE), a base station (e.g., next generation NodeB (gNB)), or other network component can operate to configure a beam failure recovery (BFR) timing based on a time offset and a number of symbols in a BFR procedure, as well as enable beam switching and bandwidth part (BWP) switching to be correlated. A beam failure recovery request (BFRQ) can be processed or transmitted in response to a detection of a beam failure. A beam failure recovery response (BFRR) can be generated via a physical downlink control channel (PDCCH) based on at least four slots after the BFRQ and a time offset for a non-terrestrial network (NTN).

The disclosure relates to fast activation of L1 measurement and beam switching of target- secondary-cells without early measurements performed while connected with the serving cell. The disclosure provides RACH-less L1 / L2 triggered mobility with preconfigured uplink grants or LTM Switching command to include MAC Control Element to activate a channel state information reference signal CSI-RS measurement and reporting for secondary cells immediately after switching, wherein a resource location is expected at a pre-configured time from the LTM command.

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 wave position division method and device, electronic equipment, a storage medium and a program product, and relates to the technical field of communication. According to the method, the position of the terminal is predicted and the beam position is divided in advance, so that the beam position range of the terminal at different service scheduling moments can be more accurately judged, beam switching preparation is made in advance, beam resources can be dynamically adjusted according to the movement condition of the terminal, the beam coverage range better meets the actual requirement of the terminal, and the user experience is improved. Therefore, the utilization rate of satellite communication resources is improved.

Aspects of the present disclosure provide solutions to UE-initiated beam switching, beam pair switching, or link switching based on use of an association of at least two types of reference signals. The at least two types of reference signals include, but are not limited to, a beam management reference signal (BM-RS), a tracking reference signal (T-RS) and a channel state information acquisition reference signal (CSIA-RS).

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.

The invention provides a dynamic target beam tracking method based on a coverage error range and an adaptive codebook. The method comprises the following steps: constructing a beam tracking scene for a dynamic target; the base station calculates the maximum error range of the dynamic target trajectory in the current time period; the base station adaptively adjusts the beam width and calculates the optimal beam width and the optimal beam orientation; the base station obtains the optimal code word; and the base station obtains a beam tracking result of the dynamic target. According to the invention, the base station calculates the beam orientation by using the trajectory prediction information, the influence of the trajectory prediction error on the beam tracking precision is considered, the generated beam width covers the error range, the influence on the tracking precision due to the increase of the training frequency is avoided, and since the base station adaptively adjusts the beam with the purpose of minimizing the beam switching overhead, the tracking precision is improved. The beam switching frequency is reduced, the problems of high system overhead and long time delay in the prior art are solved, and the real-time performance of beam tracking is further improved.

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 provides a communication method, the communication method is applied to a terminal device, and the communication method comprises the following steps: receiving measurement configuration information from a network device, the measurement configuration information comprising an event triggering condition; the physical PHY layer measures a reference signal to be measured, determines that an event triggering condition is satisfied and sends first indication information to a medium access control (MAC) layer; and the MAC layer sends a measurement result to the network equipment through MAC layer signaling according to the first indication information. In the application, the PHY layer can measure the reference signal to be measured to determine the measurement result; the MAC layer can send the measurement result through MAC layer signaling (such as MAC CE), so that the network equipment can perform mobility management such as scheduling strategy updating or cell switching, beam switching and the like based on the measurement result. According to the method, the uplink resource occupation of the terminal equipment can be reduced while the measurement result is reported quickly and timely.

The embodiment of the invention provides a communication method and device, relates to the field of communication, and can perform beam switching in time. The method comprises the following steps: sending first indication information, and receiving second indication information; wherein the first indication information is used for requesting to measure a spatial parameter of a first channel or a first signal, the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or the first indication information is used for requesting to switch the spatial parameters of the first channel or the first signal, or the first indication information is used for requesting to recover the spatial parameters of the first channel or the first signal; the second indication information is used for indicating a first space parameter, and the first space parameter is used for transmitting a first channel or the first signal; or the second indication information is used for indicating the first reference signal resource set, and at least one reference signal resource included in the first reference signal resource set respectively corresponds to one spatial parameter.

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.

A user equipment (UE) in a wireless communication network determines that a radio link failure (RLF) has previously occurred within a threshold distance from a current location of the UE. Responsive to determining that the RLF has previously occurred, the UE determines an expected beam to be encountered and that is associated with the RLF. The UE generates a first beam measurement report for the expected beam. The beam measurement report includes an adjusted power measurement for the expected beam indicating that the expected beam is an optimal beam compared to at least one neighboring beam. The UE transmits the first beam measurement report to the cellular network.

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.

Methods and apparatuses are disclosed for performing fast beam switching in a high-frequency wireless communication environment. Higher frequencies reduce transmission wavelength, which allows for an increased number of antennas and an increased number of beams. Therefore, beams become narrower and are more prone to failure. The UE must be capable of quickly identifying the beam failure and switching to a new beam. Therefore, the UE is capable of receiving multiple beams from the base station and configures both for testing and immediate use. In some cases, the UE can receive multiple beams for testing and assumes a default beam while feeding back to the base station a preferred beam. To support the larger number of available beams, MAC-CE and DCI are modified to identify this increased number of states. Alternatively, two MAC-CEs are sent, each containing a different group of states, and the DCI identifies both the group and the selected state.

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.

A method of receiving a PDSCH, by a terminal, in a wireless communication system includes: receiving, from a base station through higher layer signaling, configuration information as to whether information of a transmission configuration indication (TCI) field included in downlink control information (DCI) is to be applied; receiving, from the base station, at least one physical downlink control channel (PDCCH) for scheduling a first PDSCH and a second PDSCH transmitted from different base stations from each other; and when it is configured to apply the TCI field, and when a scheduling time offset between the at least one PDCCH and at least one of the first PDSCH and the second PDSCH is longer than or equal to a beam switching time limit, receiving each of the first PDSCH and the second PDSCH based on a quasi co-location (QCL) parameter of a TCI state indicated by a codepoint of a TCI field included in DCI transmitted through the at least one PDCCH.

The invention discloses a communication method and device, and relates to the field of communication. The method comprises: excluding N time units adjacent to a time domain of a first time-frequency resource from a first candidate resource set to obtain a second candidate resource set, N being a positive integer greater than 0, and the first time-frequency resource being used for receiving or sending first sidewalk information; determining a second time-frequency resource according to the second candidate resource set; and sending the second sidewalk information to the second terminal device on the second time-frequency resource. According to the invention, side information transmission errors caused by untimely beam switching can be reduced.

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).