252 results about "Beam pattern" patented technology

Aspects presented herein may improve network energy saving by enabling a base station to transmit SSBs in a set of SSBs with different periodicities. In one aspect, a base station configures each SSB in a set of SSBs with an SSB transmission periodicity for a time period, the time period including multiple SSB burst set transmission occasions, where at least a first SSB and a second SSB in the set of SSBs are configured with different SSB transmission periodicities. The base station transmits the set of SSBs based on a corresponding SSB transmission periodicity of each SSB over the time period.

A relay station includes first antennas used for communication with the terminal station, a second antenna used for communication with a base station, and a radio device performing non-regenerative relay. The relay station transmits a first beam pattern with an maximum SINR of a received signal from the terminal station, the received signal including a part of self-interference and measured in a first slot of a wireless frame. An information processing apparatus acquires a beam pattern set based on the first beam pattern and transmits to the relay station. In a second slot, based on SINRs of received signals from the terminal station measured for each of beam patterns included in the beam pattern set in a plurality of symbols, the relay station selects a second beam pattern from the beam pattern set, and updates a beam pattern to be used by the first antennas to the second beam pattern.

An electronic device according to various embodiments may comprise: a housing; an antenna structure comprising a substrate, which comprises a first substrate surface facing a first direction and a second substrate surface facing a second direction opposite from the first substrate surface, and at least one antenna element disposed on the substrate so as to form a beam pattern in the first direction; a first support part disposed so as to at least partially correspond to the second substrate surface; a conductive bracket comprising at least one conductive extension part disposed higher than the second substrate surface with respect to the first support part; and a wireless communication circuit configured to transmit and / or receive a wireless signal in a designated frequency band by means of the at least one antenna element.

The invention discloses a main lobe gain maximization method for an analog-digital hybrid array of a radar communication system. According to the method, the ratio of the maximum minimum main lobe level to the peak side lobe level is used as a target function, and under the main lobe ripple constraint, the simulation weight constant modulus constraint and the digital weight power constraint, the ADMM (Alternating Direction of Multiplexing) is used for carrying out joint design on the simulation weight and the digital weight. In the ADMM framework, a Riemann conjugate gradient method is adopted to solve a simulation weight subproblem with constant modulus constraint; and solving a digital weight by adopting a Lagrange multiplier method. A numerical result shows that the method can generate better main lobe ripples and lower peak side lobe level, and has good beam directional diagram accurate control performance.

The invention provides a joint optimization method and system for MIMO radar waveform design and antenna array arrangement, and belongs to the technical field of radar signal processing. A covariance matrix of a transmitting signal set is converted into a transmitting weight matrix of a time domain, and matching optimization of a radar waveform and an expected beam pattern is realized based on the transmitting weight matrix; according to the method, the directional diagram performance of the optimized radar waveform of the time domain in actual emission can be ensured, meanwhile, the influence of an antenna array arrangement vector on an emission beam pattern is considered, joint optimization is carried out on the radar waveform corresponding to an emission weight matrix and the antenna array arrangement vector, collaborative optimization between waveform design and array design is achieved, and the method has the advantages of being high in practicability and high in practicability. The overall performance potential of the system can be fully excavated, and the actual demand of a target detection task in a complex environment can be well met.

A relay node may receive a pattern index indicating a beam pattern. Further, the relay node may receive resource information indicating a beam type. Also, the relay node may receive one or more first beam indexes associated with the indicated beam pattern. On a condition that the indicated beam type is narrow and a beam index of the one or more first beam indexes corresponds to a wide beam type, the relay node may determine second beam indexes for a set of narrow beams associated with the beam index of the one or more first beam indexes corresponding to the wide beam type. Moreover, the relay node may determine a beam and time-domain resources for each of the determined second beam indexes based on the pattern index and resource information. Accordingly, the relay node may transmit data using the determined beam and at least one of the determined time-domain resources.

The invention is suitable for the technical field of acoustics, array signal processing and sonar, and provides a broadband high-gain beam pattern optimization method suitable for any array. S1, calculating a weight vector matrix of each order of eigen beams; s2, solving a broadband weighting matrix through CVX; s3, synthesizing a broadband high-gain beam pattern; according to the method, the optimal beam pattern is decomposed into characteristic beams with different robustness and directivity based on generalized characteristic decomposition, under the constraint of expected beam pattern performance, the joint weighting coefficient of each order of characteristic beams is optimized, the broadband weighting matrix of the characteristic beams is calculated, and the final broadband high-gain beam pattern is synthesized according to the weighting coefficient. According to the method, the broadband high-gain beam pattern can be obtained under the constraint condition, meanwhile, the effects of constant beam width, robustness and high gain are achieved, compared with a method disclosed in the prior art, the directivity of a beam former is higher, and the method is suitable for any array.

In a biometric identification system, a transparent body can have a curved platen surface. The curved platen surface can be removably contacted by an anatomy of a user. The anatomy can have an anatomical pattern. An illumination source can illuminate the curved platen surface with an illumination beam. The illumination beam can propagate away from the curved platen surface as a return beam having a beam pattern shaped to correspond to the anatomical pattern. An imaging lens can focus the return beam to form a real image of the beam pattern at an image location. Field-curvature-correcting sensor optics can include a sensor. The sensor can sense the real image of the beam pattern at the image location. The field-curvature sensor optics can include a planar sensor and an image-flattener lens. The field-curvature sensor optics can include a curved, convex sensor.

Disclosed are techniques for wireless sensing. In some aspects, a sensing node may transmit a first set of one or more sensing reference signals over a first set of transmit beams during a first stage of a sensing session. The sensing node may transmit a second set of one or more sensing reference signals over a second set of transmit beams during a second stage of the sensing session based on a plurality of criteria, wherein the plurality of criteria is based on one or more measurements of one or more sensing targets obtained by beamsweeping the first set of transmit beams, and wherein beamwidths of the second set of transmit beams are narrower than beamwidths of the first set of transmit beams.

The invention provides a differential microphone array speech enhancement device and method based on reference point optimization, and relates to the technical field of speech signal processing. The device comprises a microphone array, a pre-processing module, a reference point selection module and a signal processing module. According to the invention, the reference point of the microphone array is improved from the first microphone in the prior art to the geometric center of the invention, the maximum value of the distance rm from the microphones in the microphone array to the reference point is reduced by half, the high frequency band is significantly reduced, and the approximation precision of Jacobi-Anger expansion is ensured. Through reference point optimization, the invention aims to realize a beam pattern with invariable frequency in a broadband range and combined optimization of DF and WNG. While the beam pattern approximation requirement and no distortion constraint are met, the white noise gain can be maximized, and the robustness is improved.

The invention belongs to the technical field of beam forming, and discloses a frequency control array beam forming method based on logarithmic multicarrier, which comprises the following steps: S1, determining the array element arrangement position and structure of a frequency control array, and selecting a symmetrical array structure; s2, dividing a trigonometric function, adopting asymmetric frequency offset, introducing logarithmic multicarrier on the basis of triangular frequency offset, and designing the frequency offset; s3, substituting the designed frequency offset form into a transmitting beam model of the basic frequency control array; and S4, substituting the designed frequency deviation into the basic frequency control array model to obtain a beam directional diagram under the frequency deviation, and completing the design. According to the technical scheme provided by the invention, the beam width of the frequency control array beam directional diagram is effectively reduced, and the resolution of the beam is improved.

A method for exploiting multi-bounce scattering to increase the field-of-view of millimeter-wave radar imaging without prior environment knowledge is disclosed. The method includes transmitting a radar signal based on a fixed transmit beam pattern and receiving a plurality of reflections of the transmitted radar signal from a plurality of objects in an environment, wherein the reflections may be single-bounce reflections, double-bounce reflections, and triple-bounce reflections. Additionally, the method includes performing a single-bounce matched filtering to localize a first plurality of objects based on the received single-bounce reflection, performing a double-bounce matched filtering to localize a second plurality of objects based on the received double-bounce reflection and the localized first plurality of objects, and performing a triple-bounce matched filtering to localize a third plurality of objects based on the received triple-bounce reflection, the localized first plurality of objects and, the localized second plurality of objects. Further, a map that includes the plurality of objects localized by the single-bounce matched filtering, the double-bounce matched filtering, and the triple-bounce matched filtering is generated.

According to some embodiments, a method is performed by a wireless device for beam prediction in a wireless network. The method comprises receiving beam configuration information for two sets of beams, a beam set A and a beam set B. Beam set B comprises physical beams and beam set A comprises one or more virtual beams. The beam configuration information comprises data indicating a beam pattern for each of the beams in beam Set A and beam Set B and at least physical time / frequency resources for transmission / reception of the physical beams of beam Set B. The method further comprises measuring one or more beams from beam set B and predicting one or more beams from beam set A based on the measurement of the one or more beams from beam set B.

A base station testing system provides, for display, a graphical user interface (GUI) associated with facilitating testing of a base station by the base station testing system. The GUI includes one or more selectable indicators respectively associated with one or more modules of the GUI. The base station testing system obtains, based on providing the GUI, information indicating selection of a selectable indicator that is associated with analysis of beam patterns associated with the base station and thereby identifies a beam pattern analysis module that is associated with the selectable indicator. The base station testing system provides, for display, in a window of the GUI, information associated with the beam pattern analysis module, wherein the information associated with the beam pattern analysis module includes spatial frequency domain beam pattern analysis information associated with the base station.

In some implementations, a network test device may identify a beam pattern associated with a gNodeB. The network test device may select, from the beam pattern, a first location, wherein the first location is associated with a first layer of a user equipment (UE). The network test device may select, based on the beam pattern, a second location associated with a second layer of the UE, wherein the second location is selected from a set of candidate locations associated with the first layer. The network test device may create one or more multiple-input multiple-output (MIMO) channels based on selected layers. The network test device may use the one or more MIMO channels to test a multiple user MIMO (MU-MIMO) system in a simulation or emulation environment.

Aspects presented herein may improve the performance and accuracy of a UE positioning based on RIS, such as when the RIS has a limited number of control voltage sets available. In one aspect, a UE obtains an indication of beam pattern information for a set of DL beams for a network entity, where the set of DL beams is associated with an RIS. The UE adjusts a first transmission angle for a set of UL beams based on the beam pattern information and measurement for the set of DL beams, where the first transmission angle for the set of UL beams is adjusted to proximately align with a second transmission angle of the set of DL beams from the RIS. The UE transmits, via the RIS, the set of UL beams to the network entity based on the adjusted first transmission angle.

The present application relates to the technical field of radar signal processing, aiming at the target positioning and imaging ambiguity caused by the distance-angle coupling of the traditional frequency diversity array beam pattern, and the problem that more array elements are needed for random frequency offset to remove ambiguity, a FDA structure based on joint design of intra-array frequency offset and inter-array frequency offset is proposed, the transmission energy is focused on the expected distance-angle area to realize distance-angle decoupling, and by increasing the number of intra-array frequency increments, the number of array elements is increased to improve the target ambiguity-free limit, the number of frequency increments is increased from N of the traditional FDA to, the order of magnitude of the ambiguity-free limit can be greatly increased, and the tolerance of the target ambiguity-free limit is greater. By optimizing the parameters of the array element and inter-array frequency offset design, the de-ambiguous imaging can be realized without complex imaging algorithm.

The application provides a kind of intelligent metasurface assisted near-field time division integrated sensing method and system, it is related to wireless communication field.The application designs integrated sensing system by introducing RIS and single antenna receiver, avoids complex full-duplex base station and multi-antenna receiver, significantly reduces hardware complexity and implementation cost under the premise of ensuring high-quality communication and sensing performance;The adjustable frame structure designed separates the communication subframe and the sensing subframe completely, decouples the communication beam optimization and the sensing signal design, respectively realizes the communication and sensing functions in a purer signal environment;In the communication subframe, the communication and rate maximization are realized, and in the sensing subframe, the sensing capability is enhanced through the transmission beam pattern matching, which significantly improves the overall communication rate and sensing accuracy of the system;Finally, a virtual multi-dimensional receiving signal of multiple passive targets in the near field of RIS is constructed through repetition coding design, and then the 2D-MUSIC algorithm is used to estimate the target angle and distance parameters.

The present application relates to a MIMO radar multi-target detection method and system based on strong target restriction, which designs a beam weight matrix solving method with strong target restriction on the basis of a MIMO radar multi-target detection method based on reinforcement learning, takes out possible strong targets from the detection results of the MIMO radar, calculates the power gain restriction values corresponding to each strong target, designs a beam optimization scheme with strong target restriction and solves the beam weight matrix by using a convex optimization toolbox. During detection, the radar waveform corresponding to the transmission beam weight matrix is used, the Wald type statistics of the radar echo is calculated, the state calculation and action selection are performed, the angle unit to which the beam pattern of the MIMO radar needs to be focused is selected, and finally the beam weight matrix of the next detection time is quickly solved according to the beam weight matrix solving method with strong target restriction, so as to improve the detection performance of the MIMO radar on weak targets.

The invention discloses an N-order omnidirectional adjustable differential beam former with a controllable zero point and a design method, and belongs to the field of signal processing, and the method comprises the steps: constructing a signal steering vector according to the physical parameters of an AVS array; selecting an ideal N-order direction-adjustable beam pattern form, and setting target and non-target direction response constraints; a controllable zero point is introduced to design an N-order omni-directional adjustable differential beam pattern, and a constraint equation set is constructed to solve an N-order omni-directional adjustable differential beam pattern coefficient; and based on Maclaurin series expansion optimization weight vectors, designing all-order omnidirectional adjustable differential beam formers. According to the method, Maclaurin series expansion is taken as a theoretical basis, a target beam pattern meeting any steering angle and zero point direction constraint is constructed, a linear mapping relation is established between the target beam pattern and a signal steering vector, a minimum norm solution of a weight vector of each channel is deduced, and unified optimization of main lobe direction flexible adjustment and interference suppression is realized; and the omnidirectional adjustable function of the beam pattern from 0 degree to 360 degrees is realized.

A method in a relay device that comprises a plurality of antenna arrays, includes configuring first beamforming setting for first set of antenna arrays of the plurality of antenna arrays of the relay device to establish a first link between the relay device and a source device. A first data stream is received with a first beam pattern from the source device through the first link and a second data stream with a second beam pattern is forwarded to a destination device through second link without de-modulating the first data stream. The method includes phase shifting, by antenna array of the plurality of antenna arrays, an incoming signal stream and an outgoing signal stream by a different value for each element within the first set of antenna arrays to minimize an interference between the incoming signal stream and the outgoing signal stream, respectively, through the phase shifting.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information indicating one or more sets of channel measurement resources (CMRs) associated with a channel state information (CSI) report, indicating that the UE is to predict measurements for one or more CMRs from the one or more sets of CMRs, and indicating an association between subsets of CMRs, from the one or more sets of CMRs, and respective time domain measurement occasions. The UE may measure, at a time domain measurement occasion of the respective time domain measurement occasions, a subset of CMRs, from the subsets of CMRs, that is associated with the time domain measurement occasion. The UE may transmit the CSI report including predicted measurement values associated with the one or more CMRs. Numerous other aspects are described.

The invention discloses a block coordinate descent and matching theory-based low-orbit satellite hopping beam calculation unloading method, and belongs to the field of low-orbit satellite communication. The method comprises the following steps: firstly, a core network counts the reported service demand of each user, considers the lower limit of time delay satisfaction, and constructs a hopping beam and resource scheduling initial model; and then, based on a matching theory, carrying out hopping beam pattern initialization, and obtaining an optimal solution of unloading-resource scheduling by using a block coordinate descent algorithm, thereby obtaining the delay satisfaction degree of each sink node corresponding to the hopping beam pattern. And then, the core network randomly selects satellites and two different time slots to execute exchange matching, updates a beam hopping pattern and unloading-resource scheduling, selects and rejects the updated beam hopping pattern according to the time delay satisfaction degree, and iteratively updates repeatedly until the number of times is reached. And sending the finally reserved hopping beam pattern and the corresponding optimal resource scheduling strategy to each user / satellite node, and carrying out beam lightening and unloading strategy execution. According to the invention, the management complexity is effectively reduced.

This invention discloses a method for optimizing airborne radar detection waveforms in multi-pulse accumulation scenarios. The method involves calculating the current transmit modulation vector based on the target airborne radar's current phase-coded waveform, target beam pointing angle, and attribute parameters; calculating the current transmit signal space based on the current transmit modulation vector, current phase-coded waveform, and attribute parameters; calculating the current angular domain waveform based on the current transmit modulation vector and current transmit signal space; determining the current cross-correlation sidelobe level, current autocorrelation sidelobe level, current transmit beam pattern, and current Doppler sidelobe level of the current angular domain waveform and other angular domain waveforms, respectively, and substituting these values ​​into a target optimization function to obtain the current target value; and determining the target transmit waveform based on the current target value and a preset iteration termination condition. This invention significantly improves the radar's anti-sorting and anti-spoofing capabilities while maintaining detection performance.

The invention discloses a sum and difference angle measurement method based on angle discrimination curve piecewise fitting, which belongs to the field of signal processing, and comprises the following steps: firstly, carrying out digital beam synthesis on four-quadrant signals, synthesizing a sum beam, an azimuth difference beam and a pitch difference beam, and measuring the amplitude of the sum beam, the amplitude of the azimuth difference beam and the amplitude of the pitch difference beam; thirdly, according to a fixed frequency interval, completing beam pattern scanning of M frequency points of a target frequency band, calculating a sum-difference amplitude comparison result, and generating M groups of angle measurement parameters by adopting an angle discrimination curve segmentation fitting method; and finally, measuring signal frequency, sum beam amplitude, azimuth difference beam amplitude, pitch difference beam amplitude, azimuth sum difference phase difference and pitch sum difference phase difference in real time, selecting angle measurement parameters according to a frequency proximity principle, and calculating a target azimuth angle and a pitch angle in real time. According to the invention, sum-difference angle measurement of a wide-frequency-domain signal receiving system can be realized, the angle measurement precision is improved, and the engineering realization complexity is reduced.

Example embodiments provide a control device and a biomedical illumination device enabling multiwavelength laser line generation with automated beam alignment. The control device may be configured to determine, based on monitored output beam pattern of the biomedical illumination device for illumination of a microscopic sample, a position of one or more beams of the output beam pattern in relation to a target position of the one or more beams within the output beam pattern; determine instructions for one or more actuator-controlled optics of the biomedical illumination device configured for beam steering to change a deflection angle of the actuator-controlled optics based on a difference between the determined position of the one or more beams of the output beam pattern and the target position of the one or more beams within the output beam pattern; and transmit the instructions to the one or more actuator-controlled optics.

This invention belongs to the field of 6G communication technology, specifically relating to a method for optimizing the security resource allocation of a dual-RIS-assisted sensing integrated system. The method includes constructing a dual-RIS-assisted sensing integrated system; under constraints such as sensing beam pattern gain, user service quality, dual-RIS phase shift, and base station maximum transmit power, constructing a resource allocation optimization problem with the goal of maximizing system security energy efficiency; using the Tinkerbach method combined with variable substitution techniques to transform the coupled and non-convex resource allocation optimization problem into a tractable uncoupled problem; and employing alternating optimization, continuous convex approximation, and semi-definite relaxation methods to efficiently solve the tractable uncoupled problem, obtaining the optimal security resource allocation scheme. This invention can effectively improve the overall security energy efficiency of the sensing integrated system, achieving an effective balance between security energy efficiency and sensing performance.

The application provides a service demand-based beam position level skip beam pattern design method, device and equipment, and belongs to the technical field of wireless communication. The method comprises the following steps: the skip beam pattern is used for indicating the beam scanning sequence of the beam position in the non-ground network coverage range, the beam scanning sequence of each beam position is configured according to the priority of each beam position, and the priority is associated with the service traffic of each beam position, the number of ground base stations associated with each beam position and / or the number of users of each beam position; and / or the skip beam pattern is used for indicating the information broadcast timing in the public broadcast information, the first system information block (SIB) is included in the public broadcast information, the service cell basic information and the satellite auxiliary information are included in the first SIB, and the first SIB is periodically broadcast. The service scheduling efficiency can be improved.

This invention discloses a method for suppressing high sidelobes / grating lobes in a wide-area ultra-sparse MIMO radar system, comprising the following steps: (1) Based on a MIMO radar with sparse node distribution, select one set of array elements, each array element transmits orthogonal waveforms to obtain a joint transmit / receive beam pattern; (2) By changing the carrier frequency, obtain joint beam patterns respectively, multiply the obtained beam patterns to obtain an optimized joint beam pattern; (3) Select another set of array elements, repeat steps (1) and (2) to obtain joint beam pattern results under different array configurations; (4) Multiply the joint beam patterns under all array configurations to obtain the final optimized joint beam pattern. By multiplying the carrier agility results of the joint transmit / receive beam patterns obtained from different carrier frequencies of different MIMO radar transmit / receive array configurations, the joint transmit / receive beam pattern optimization is achieved, resulting in a joint transmit / receive beam pattern with lower sidelobes.

This application provides a remote online control method and apparatus for smart meters to solve the problem of limited smart meter deployment. In this method, because the relay terminal is equipped with multiple antennas, and these antennas have different beam patterns (e.g., the first beam direction of the first antenna is different from the second beam direction of the second antenna), the smart meters can be flexibly deployed in various beam directions according to the actual environment. For example, the first meter can be deployed in the first beam direction, and the second meter in the second beam direction, thus avoiding deployment limitations. Furthermore, since smart meters can be deployed in multiple beam directions, the relay terminal can control the state switching of these smart meters in an orderly manner according to the beam direction. For example, when the first meter is awakened, the second meter can be controlled to enter sleep mode to achieve energy saving.