237 results about "Narrow beam" patented technology

The invention relates to the technical field of communication, in particular to an airborne Tiantong phased-array antenna and an application method thereof. According to the method, phased-array antenna beams are driven to perform electronic scanning according to a geometric azimuth angle, beacon signal blind acquisition is performed in a preset airspace in a wide beam mode, and when an initial signal is detected, the mode is immediately switched to a narrow beam scanning mode; dynamically adjusting a phase weighting coefficient to realize pointing adjustment, so that a signal quality parameter is continuously converged in an optimal threshold interval; carrying aircraft maneuvering acceleration feedback is introduced, beam pointing offset is dynamically compensated based on a pre-constructed interference feature library, and signal fluctuation caused by a multipath effect is suppressed; and continuously checking a data validity flag bit of the main inertial navigation system, seamlessly switching to an antenna built-in inertial navigation data stream when a failure threshold is triggered, and activating a rapid recapture program to maintain zero interruption of a communication link. Through dual-source inertial navigation data fusion and intelligent beam control, rapid and accurate tracking of Tiantong satellites in an airborne environment is realized.

The invention provides a wide and narrow wave beam adjustable array antenna, which comprises at least two groups of sub-arrays, each group of sub-arrays comprises at least one high-frequency dual-channel antenna, the side edge of each high-frequency dual-channel antenna is provided with a reflection boundary, and the reflection boundary is driven by a lifting device to ascend and descend. The high-frequency dual-channel antenna works in a corresponding wave beam working mode under the condition that the reflection boundary is at a plurality of different heights; wherein the beam working mode comprises a wide beam mode, a first conventional antenna mode and a second conventional antenna mode, and the beam width of the first conventional antenna mode is different from that of the second conventional antenna mode. According to the invention, the beam width can be adjusted by adjusting the height of the reflection boundary, so that the requirements in different scenes are met.

A method for wireless baseband processing for realizing integrated sensing and communication (ISAC) includes: designing based on a wireless baseband processing procedure of a base station, adding an ISAC beam management module in a transmitter, and adding a sensing function (SF) module to a receiver; sending a wide sensing-communication transmission beam through the ISAC beam management module, and decoding sensing information from a reflected sensing echo through the SF module, the sensing information including a target location; narrowing a beam, aiming at the target location, and sending a narrow sensing-communication transmission beam through the ISAC beam management module based on the sensing information; and designing a manner for separating an uplink communication beam and echo data of a sensing-communication transmission beam received by the base station, the sensing-communication transmission beam including the wide sensing-communication transmission beam and the narrow sensing-communication transmission beam.

Aspects of the disclosure relate to user equipment (UE)-assisted beam broadening in a wireless communication system configured to employ beamforming. A UE may determine downlink channel characteristics by monitoring for, receiving, and measuring a suitable downlink reference signal. Based on the channel characteristics the UE may select a wide beam corresponding to a set of narrow beams. The UE may then transmit a report identifying the selected wide beam by indicating a direction of the selected wide beam and an angular width of the selected wide beam. Other aspects, embodiments, and features are also claimed and described.

The invention relates to the technical field of indoor positioning, in particular to a millimeter wave CSI (Channel State Information) indoor positioning method and system based on a generative adversarial network, and millimeter waves are large in bandwidth, narrow in beam, high in time resolution and space angle resolution and capable of reducing the influence of a multipath effect. Position estimation is directly obtained from CSI data directly obtained in the millimeter wave communication process, complex signal processing and filtering steps of obtaining other parameters from CSI are avoided, and the system calculation complexity is greatly reduced. The information of the AP position is extracted from the high-dimensional observation vector by using the generative adversarial network, so that complex positioning algorithms such as Kalman filtering or graph optimization are avoided, and the calculation complexity is reduced; according to the method, AP position estimation is obtained through confrontation training of the generator and the discriminator, position coordinates of reference points do not need to serve as labels, input data are all label-free data, dependence on marked data is avoided, and prior knowledge such as the AP or the reference points is not needed.

Lighting system having visible-light source including semiconductor light-emitting devices arranged for generating plurality of visible-light emissions having range of color points including cool to very cool white color point for daytime and warm to very warm white color point for nighttime. Optical system arranged for causing some visible-light emissions to have range of beam widths including relatively wide and narrow beam widths. Mounting system causing range of beam directions. Control system causing visible-light emissions to include daytime configuration having cool to very cool white color point and relatively wide beam width, and nighttime configuration having warm to very warm white color point and relatively narrow beam width. Daytime configuration includes control system for causing visible-light emissions to include lateral- or up-light emissions, promoting relatively high equivalent melanopic lux. Nighttime configuration includes control system for causing visible-light emissions to include down-light emissions promoting relatively low equivalent melanopic lux.

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 relates to the technical field of sensor sensing, and discloses a microspur sensing method and system for an MEMS ultrasonic sensor array, and the method comprises the steps: carrying out the phase calibration of the MEMS ultrasonic sensor array, and obtaining a phase calibration parameter; performing near-field spherical wave phase compensation on the phase calibration parameter based on the macro target distance and the incident angle to obtain a near-field compensation parameter; controlling the MEMS ultrasonic sensor array to execute beam forming of wide beam scanning and narrow beam focusing according to the near-field compensation parameter to obtain a macro focusing sound field; transmitting ultrasonic waves to a rear vehicle target through the micro-distance focusing sound field and receiving a reflection signal, and performing vehicle feature recognition on the reflection signal to obtain a vehicle recognition result; and positioning calculation of the target angle and distance is carried out based on the vehicle identification result to obtain rear vehicle positioning data, and the angle resolution and the distance measurement precision in a microspur range are improved.

Methods, systems, and devices for wireless communications are described for beam measurement and selection using separate synchronization signal block (SSB) bursts for wide beams and narrow beams, where a periodicity of SSB bursts of narrow beams may be longer than a periodicity of SSB bursts with wide beams. A user equipment (UE) may predict narrow beam measurements (such as using an artificial intelligence or machine learning (AI / ML) model) at occasions of the wide beam SSBs that do not include the narrow beam SSBs. The UE may identify control resource set or remaining minimum system information resources, or random access channel resources for a random access transmission, based on the measured and predicted measurements.

The invention relates to the technical field of underwater detection, and discloses an underwater oil pipeline leakage detection method based on acoustic imaging and image recognition, and the method comprises the steps: firstly, employing wide-beam acoustic imaging to recognize a candidate region with a plume form; then switching to a high-coherence narrow beam mode, detecting the phase of the reference point echo after passing through the candidate area, and calculating a phase jitter quantitative index; performing cooperative judgment in combination with morphological characteristics and phase jitter indexes, and confirming a leakage event; and finally, performing three-dimensional scanning on the confirmed leakage area, constructing a phase disturbance intensity spatial distribution diagram, and determining accurate three-dimensional coordinates of a leakage source according to a peak point of the phase disturbance intensity spatial distribution diagram. Through bimodal combination of the morphological characteristics of the target and the physical characteristic of sound wave phase jitter caused by leakage turbulence, the method can effectively distinguish real leakage from acoustic false targets such as fish schools and suspended silt, significantly reduces the detection false alarm rate, and achieves high-precision three-dimensional positioning of a leakage source.

Various solutions for initial access with enhanced beam configuration in wireless communications are described. A network node may configure a cell with at least one wide beam and one or more narrow beams. The wide beam is associated with a cell-defining synchronization signal block (CD-SSB) and each of the narrow beams is associated with a non-cell-defining synchronization signal block (NCD-SSB) or a channel state information-reference signal (CSI-RS). The network node may transmit the CD-SSB on the wide beam. Then, the network node may receive a random access request from an apparatus for initial access to the cell.

The invention provides an anti-interception communication access method, system and device, a storage medium and a program product, and relates to the technical field of wireless communication networks, and the method comprises the steps: generating a radio frequency signal through an intelligent array antenna based on a time slot index and a beam power index, and transmitting the radio frequency signal to a satellite, so as to obtain the service data of a service copy packet; the radio frequency signal comprises a sending signal corresponding to each time slot, and each sending signal carries a service copy packet; and in any two adjacent time slots, the intelligent array antenna sends corresponding sending signals in one time slot by adopting a wide beam mode and a high power mode, and the intelligent array antenna sends corresponding sending signals in the other time slot by adopting a narrow beam mode and a low power mode. Through the above mode, the orthogonality of the wave beam and the power can be fully utilized to avoid the situation that the signal is intercepted by an electronic reconnaissance satellite, the anti-interception performance of the aircraft is improved, and the risk that the aircraft is exposed is reduced.

The invention discloses a 4D millimeter wave radar antenna and a nested array and an anti-interference design method thereof. According to the method, a multi-transmitting and multi-receiving orthogonal array is adopted to construct a larger equivalent virtual aperture under a limited size, and hardware adopts a double-layer waveguide and is matched with multi-resonance broadband matching to cover 76-81 GHz; a multifunctional nested sub-array is introduced to realize division cooperation of long-distance narrow beam, short-distance high resolution and pitching enhancement, and a side lobe is suppressed and the size of an array plane is reduced by sharing aperture and channel multiplexing; the frequency spectrum orthogonality and mutual interference resistance of the same-domain radar are improved through segmented calibration, online interference detection and sub-band selection and switching; on the premise of meeting the resolution, the size of the module is reduced through sparse topological optimization. According to the method, the stable detection distance and the weak and small target detection capability can be improved, the fusion and false association probability is reduced, unnecessary braking is reduced, missing detection / false alarm caused by mutual interference is reduced, and the constraint on the whole vehicle model and the installation window is reduced.

This invention discloses a three-element leaky wave antenna array structure based on a dielectric ridge parallel plate waveguide, comprising: S1, designing a three-element array structure based on the coupling characteristics of the dielectric ridge parallel plate waveguide, wherein the two-port array antenna is fed by probes in parallel; S2, determining the slot design of the three elements according to the pattern product theorem and the relationship between slot size and leakage, thereby designing a scanning beam that meets the requirements of narrow beamwidth and high gain. This invention is a leaky wave antenna array structure with narrow beamwidth and high gain characteristics proposed to meet the requirements of high signal strength and strong anti-interference in long-distance point-to-point communication systems. This antenna can provide better directivity and higher communication quality, while ensuring that the antenna has the advantages of compact structure and small size, thus it can be applied to wireless power transmission systems such as satellite communication systems, radar systems, and the Internet of Things.

The invention provides a method and a device for enhancing beam configuration in wireless communication. The network node may divide the total transmit power into a first transmit power and a second transmit power. The network node may then configure one or more wide beams, serving one or more user equipments (UEs) within one or more first areas covered by the wide beams to share the first transmission power. Furthermore, the network node may also configure one or more narrow beams to serve one or more UEs within one or more second areas covered by the narrow beams to share a second transmission power.

A receiver system includes and antenna and a processor. The processor is further configured to establish initial contact with a satellite using a wide beam antenna setup for the antenna; determine a plurality of narrow beam antenna setups for the antenna based at least in part on satellite data from the initial contact; determine position coordinates and time information using position-navigation-time (PNT) data received from the plurality of narrow beam antenna setups; and provide the position coordinates and the time information.

The invention relates to the technical field of communication, and discloses an anti-interference automatic synchronization frequency hopping method based on wireless networking. The method comprises the following steps: realizing adjacent node orientation identification through a low-power coding detection signal; establishing a narrow beam directional link based on the phased-array antenna; executing four times of timestamp exchange on a link to realize distributed high-precision clock synchronization; generating a link exclusive frequency hopping sequence in combination with the network root key, the synchronization time and the node identifier; and encrypted data transmission and link dynamic maintenance are completed under the cooperation of a directional beam and frequency hopping. According to the invention, through a space-time-frequency three-dimensional collaborative agility mechanism, the anti-interference performance, the low interception probability and the network synchronization robustness are improved.

Embodiments of the present application provide a beam adaptive adjustment method and device, a base station equipment and a storage medium. The method comprises: receiving a first beam measurement report, wherein the first beam measurement report comprises one or more first parameter values, and the first parameter values are used to indicate the signal quality of the millimeter wave beam measured by the user equipment; and performing millimeter wave beam adaptive adjustment based on the first beam measurement report, wherein the millimeter wave beam adaptive adjustment comprises adjusting the width of the millimeter wave beam. The present application adjusts the width of the millimeter wave beam according to the beam measurement report reported by the terminal, realizes the adaptive adjustment of wide and narrow beams, and improves the signal coverage of the multi-antenna array.

The application relates to the technical field of underwater detection, and discloses an underwater oil pipeline leakage detection method based on acoustic imaging and image recognition, which comprises the following steps: firstly, a wide-beam acoustic imaging is adopted to identify a candidate region with plume morphology; then, a high-coherence narrow-beam mode is switched to, the phase of a reference point echo after penetrating through the candidate region is detected, and a phase jitter quantization index is calculated; then, a collaborative judgment is carried out on the morphology feature and the phase jitter index, and a leakage event is confirmed; finally, three-dimensional scanning is carried out on the confirmed leakage region, a phase disturbance intensity spatial distribution map is constructed, and the peak point of the map is used to determine the accurate three-dimensional coordinates of a leakage source. Through the bimodal combination of the morphology feature of the target and the physical characteristic of the acoustic phase jitter caused by the leakage turbulent flow, the application can effectively distinguish the real leakage from acoustic false targets such as fish schools and suspended silt, significantly reduce the detection false alarm rate, and realize high-precision three-dimensional positioning of the leakage source.

A RAP detection procedure that can be used to find the best narrow beam in an efficient manner. In a first step, an access point correlates an incoming signal with appropriate RAPs and then selects at least one candidate RAP for further processing in at least one set of narrow beams that all reside within the coverage area of a wide beam with which the candidate preamble is associated. For each candidate RAP, a second step is executed including narrow beamforming and a PRACH receiver chain including threshold comparison.

The application provides an antenna and a communication device, relates to the technical field of communication, and aims to solve the problem that an antenna cannot effectively consider both a relatively narrow beam width and a relatively small profile height. The antenna provided by the application comprises a first radiating unit and a first conductive piece, the first radiating unit is used for transmitting or receiving a wireless signal, and the first conductive piece is connected with the first radiating unit in common; wherein, 2N first conductive pieces are arranged corresponding to one polarization of the radiating unit, N is a positive integer; the distance between the first conductive piece and the center of the first radiating unit is L1, the farthest distance from the edge of the first radiating unit to the feeding center is L2, and L1<=L2; so that the first conductive piece is coupled with the first radiating unit, thereby narrowing the beam width of the first radiating unit. In the antenna provided by the application, the first conductive piece is configured, the beam width of the first radiating unit can be effectively narrowed, and the profile height of the antenna is not obviously increased.

Wireless communication systems and methods related to accessing a channel based on an interference condition in a wireless communication network are provided. For example, a wireless communication method performed by a wireless communication device can include receiving, from a second wireless communication device, one or more signals associated with a beam parameter, determining, at each of a plurality of locations, a signal measurement for at least one of the one or more received signals, and determining, based at least in part on a cumulative distribution of the signal measurements at the plurality of locations and a reference probability distribution, whether the second wireless communication device satisfies an interference condition. Other features are also claimed and described.

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may receive a system information message from a base station indicating a beam sweeping procedure supported by the base station. Based on the system information message, the UE may receive, as part of the indicated beam sweeping procedure, a first synchronization signal block (SSB) as part of first set of SSBs, and a second SSB as part of a second set of SSBs. The UE may then transmit, to the base station, one or more messages that indicate a narrow beam for communications between the UE and the base station. In some cases, the indicated beam may correspond to the first SSB and the second SSB, and is indicated on one or more random access channel (RACH) occasions associated with the beam sweeping procedure.

The invention discloses a satellite-borne base station narrow beam resource allocation method, a satellite-borne base station and a readable storage medium. When a user puts forward a data transmission demand to a spaceborne base station, the spaceborne base station clusters the user according to the user position and the data transmission demand to establish a category list, and the spaceborne base station determines a narrow beam center and allocates narrow beam resources according to each category list. According to the method, the actual positions and scheduling priorities of the users are fully considered, beam scheduling and scheduling user screening are combined, and the narrow beam scheduling flexibility, the wireless resource utilization rate and the system throughput in the dynamic environment are improved.

The invention provides a satellite antenna which comprises an antenna feed assembly, an orientation and inclination adjusting assembly and a pitch angle adjusting assembly, the antenna feed assembly comprises a reflecting cover and a feed source, and the pitch angle adjusting assembly comprises a middle support and a pitch motor module. The middle support is provided with a first supporting arm and a second supporting arm which are rotationally connected with the back face of the reflecting cover and arranged in a spaced mode, the pitching motor module is assembled on the first supporting arm, and the first supporting arm is provided with a first rotating hole which is coaxial with the second supporting arm which is provided with a second rotating hole. The pitching motor module can drive the reflecting cover to generate pitching rotation around the central axis of the first rotating hole and the central axis of the second rotating hole. According to the invention, the abrasion of the motor module can be reduced, the service life can be prolonged, and the jittering phenomenon of the antenna feed assembly in the pitching angle change process, especially in a low pitching angle interval, can be avoided, so that the satellite assembly can meet the precision requirement of a high-frequency-band satellite on a narrow beam angle of a ground station.

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to an early user equipment (UE) beam refinement scheme during initial access using msg1 repetition. In some aspects, a UE may beam-sweep an initial message of a random access procedure over respective UE narrow beams within an initial UE wide beam. A network node may select one of the UE narrow beams and transmit an indication of the selected UE narrow beam to the UE. The UE may then use the UE narrow beam for subsequent uplink and / or downlink communications.

The present invention discloses a single-satellite positioning method combining wide and narrow beams, which belongs to the field of satellite navigation and positioning. In view of the constraint that single-satellite positioning can obtain limited position information, the present invention constructs a single-satellite positioning strategy combining wide and narrow beams. In the wide beam stage, the satellite transmits a broadcast signal to cover the entire positioning area, and locks the potential position point of the terminal by processing the leading sequence signal fed back by the terminal. In the narrow beam stage, the coverage area is divided into multiple quadrants and narrow beams are transmitted in sequence. The quadrant in which the terminal is located is determined by measuring the received signal strength of the leading sequence signal fed back by each beam, eliminating the ambiguity of the position point locked in the wide beam stage to determine the specific position of the terminal, and realizing accurate positioning of the terminal under the working condition that single-satellite positioning can obtain limited information. The present invention improves the utilization efficiency of positioning parameters based on the single-satellite positioning strategy combining wide and narrow beams, realizes accurate positioning based on a single satellite, simplifies the positioning parameter solution, and reduces overhead and cost compared to multi-satellite positioning.

The present application relates to the technical field of wireless communications, and in particular to a communication method and a related apparatus. The method comprises: determining a first sub-area and a second sub-area within a first area covered by a first satellite, wherein a sub-satellite point of the first satellite is located in the first sub-area, and the second sub-area comprises part or all of an edge area of the first area; and configuring a first wide beam within the first sub-area and configuring a first narrow beam within the second sub-area. By using the method provided in the present application, the impact on communication quality at the edge of a satellite coverage area when a wide beam is used to improve communication coverage can be mitigated.

The invention provides a method and an apparatus for supporting paging adaptation of enhanced beam configuration in wireless communication. The method and the apparatus are used for supporting paging adaptation of enhanced beam configuration in wireless communication. A network node may configure a cell comprising at least a wide beam and one or more narrow beams. The wide beams may be configured to be always active, and each narrow beam may be configured to be active or inactive. A network node may send a paging message to a device within a cell. The paging message may be transmitted on the activated wide beam and / or narrow beam. The network node may then receive a random access request from the device for initial access to the cell.

In one method, a wireless transmit receive unit (WTRU) receives a SSB and / or one or more SIBs through a wide beam from a non-terrestrial network (NTN) satellite. The decoded SIBs may provide a set of reference locations for narrow beams and several RACH configurations (or SSB-to-RACH occasion (RO) mappings) for narrow beams provided against reference timings and satellite location. The WTRU determines a suitable RACH resource based upon one or more of (i) WTRU location, (ii) reference locations for narrow beams, (iii) current time, (iii) reference timings for RACH configurations (or SSB-RO mappings) and (iv) satellite location. The WTRU transmits RACH over the determined RACH resource. In some embodiments the SIBs are received in a narrow beam based on SSB MIB information. In other embodiments, a narrow beam is selected based on CSI-RS measurements.