143 results about "Narrow beam" patented technology

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.

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.

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.

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.

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.

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.

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 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.

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.

The application relates to a forward millimeter wave radar antenna. The application comprises a body and a wide-beam waveguide antenna, a narrow-beam waveguide antenna and waveguide transmission channels integrated in the body, wherein the waveguide transmission channels comprise a first waveguide transmission channel and a second waveguide transmission channel; the wide-beam waveguide antenna comprises a polarization conversion structure; an antenna unit comprises a first antenna radiation cavity, a first slot radiation groove and a first open horn connected in sequence, and the polarization conversion structure is connected with the first antenna radiation cavity; a first choke groove; the narrow-beam waveguide antenna comprises a splitter connected with the second waveguide transmission channel; an antenna structure array comprises a plurality of sub antenna structure units, each of which comprises a second antenna radiation cavity, a second slot radiation groove and a second open horn connected in sequence; and a second choke groove is arranged on the side of the antenna structure array. The application realizes the requirements of close-range wide-angle coverage and long-distance high-precision detection, and reduces the production cost.

A communication method and apparatus relate to the field of communication technologies, and are provided to enable a terminal device to better access a network device, and improve communication quality between the terminal device and the network device. The method includes: A first network device adjusts a beam from a first beam to a second beam when a first preset condition is met; and after adjusting the beam to the second beam, adjusts the beam from the second beam to the first beam when a second preset condition is met. The first preset condition is that in a coverage area of the first network device, a quantity of terminal devices whose moving speeds are greater than or equal to a first preset threshold is greater than or equal to a second preset threshold. A beam type of the first beam is a narrow beam, and a beam type of the second beam is a wide beam. The second preset condition is that in the coverage area of the first network device, the quantity of terminal devices whose moving speeds are greater than or equal to the first preset threshold is less than the second preset threshold.

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

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 application discloses a beam selection method and device, electronic equipment and medium. Through the application of the technical solution, the base station device can automatically predict the signal strength values of all narrow beams in the direction of the terminal according to a preset network prediction model, and select multiple candidate beams from the adjacent transmission directions of the narrow beams with the highest signal strength values, so as to select the final target beam according to the signal strength values of each candidate beam. In this way, on the one hand, the problem of inaccurate selection accuracy that often occurs when selecting the optimal beam from a large number of narrow beams in a multi-antenna system is avoided. On the other hand, since a large amount of selection work is obtained by calculation and prediction, the number of measurement beams actually transmitted by the base station is greatly reduced, thereby achieving the purpose of reducing signaling overhead.

The present disclosure provides an electronically steerable and switchable antenna array. The antenna array can: produce a first beam having a first coverage and a second beam having a second coverage by selecting one of a first beamwidth and a second beamwidth for the first beam and the second beam; responsive to selecting the first beamwidth: switch a signal input to a narrow beam antenna array; steer the first beam to one of a first positive, negative, or zero offset position; independently steer the second beam to one of a second positive, negative, or zero offset position; transmit a signal received from the signal input via the first beam and the second beam; and responsive to selecting the second beamwidth: switch the signal input to a wide beam antenna array; and transmit a signal received from the signal input via the first beam and the second beam.

This application provides an antenna and communication device, relating to the field of communication technology, to solve the problem that antennas cannot effectively balance narrow beamwidth and small profile height. The antenna provided in this application includes a first radiating element and a first conductive element. The first radiating element is used to transmit or receive wireless signals, and the first conductive element is grounded with the first radiating element. Each polarization of the radiating element corresponds to 2N first conductive elements, where N is a positive integer. The distance between the first conductive element and the center of the first radiating element is L1, and the farthest distance from the edge of the first radiating element to the feed center is L2, where L1 ≤ L2. This allows the first conductive element to couple with the first radiating element, thereby narrowing the beamwidth of the first radiating element. In the antenna provided in this application, by configuring the first conductive element, the beamwidth of the first radiating element can be effectively narrowed without significantly increasing the antenna's profile height.

The invention discloses a directional private voice transmission mobile phone shell with close-range ear positioning and a method, and relates to the field of mobile communication terminal accessories. According to the invention, the built-in camera of the mobile phone is reused to realize ear positioning, the rear camera is adopted to complete target ear aiming during outward directional transmission, and the front camera is adopted to realize face and ear real-time tracking during private listening; the mobile phone shell is provided with a control module and a directional sound production unit, a hardware solidification beam forming algorithm unit is arranged in the control module, the sound production unit is driven to form a narrow beam sound field, voice is accurately focused on a close-distance ear region, and directional private voice transmission is achieved. The mobile phone shell can be connected with a mobile phone in a wired or wireless mode, a matched APP can achieve text-to-voice, positioning aiming, mode switching and global audio capture and forwarding of a mobile phone system, and the mobile phone shell is easy to use.

Methods, systems, and devices for wireless communications are described that provide for synchronization signal block (SSB) transmissions in a non-terrestrial network (NTN) using a relatively wide beam and data communications via relatively narrow beams. A transmitting satellite in a NTN may transmit system information blocks that correlate SSB or reference signal transmissions to particular random access channel (RACH) resources. The SIBs may indicate RACH resources associated with different user equipment (UE) locations that correspond to narrow beams, or may indicate RACH resources associated with different CSI-RS resources. A particular narrow beam may be selected based on a location of the UE and a RACH resource that is associated with that location. In cases where a beam is a moving beam, and the location associated with the RACH resource may be based on a reference time point and an ephemeris of the transmitting satellite.

This invention provides a dual-ring detection type static CT imaging system, comprising: a control system; a ground-mounted gantry; a single X-ray ring, mounted on the gantry and communicatively connected to a scan timing controller, the X-ray ring including multiple X-ray sources arranged in a circular array; and two detector rings, both mounted on the gantry and communicatively connected to the scan timing controller, coaxially arranged on opposite sides of the X-ray ring, each detector ring including multiple detectors arranged in a circular array; the X-ray sources simultaneously emit two narrow beams of X-rays during a preset time period under the control of the scan timing controller. This invention optimizes the layout space between the X-ray sources and detectors, improves the lifespan of the X-ray sources, expands the scanning field of view of static CT, and enhances the scanning efficiency of static CT.

An apparatus (100) for use in an optical wireless communication system comprises: a wide beam light source (L5): two or more narrow beam light sources (L1-L4) configured to emit in a different direction, wherein a combined field-of-view. FoV, of the narrow beam light sources (L1-L4) is covered by a FoV of the wide beam light source (L5); a plurality of switches (S1-S5) configured to turn on or off a corresponding one out of the 5 light sources (L1-L5) individually; a receiver (RX) configured to receive one or more feedback signals from a remote device (200); and a controller (CTR) configured to control the plurality of switches (S1-S5) via a control signal; update the control signal based on the one or more feedback signals received by the receiver (RX): carry out a beam selection procedure by sending test signals via the wide beam light source (L5) and one or more 10 narrow beam light sources (L1-L4) to the remote device (200) to enable a selection of one out of the narrow beam light sources (L1-L4) for establishing data communication with the remote device (200).

A method includes obtaining information representing a current state of communication with a user equipment (UE) performed using one or more beams. The method also includes comparing the information to statistical historical state information to determine one or more best next narrow beam candidates. The method further includes performing a beam search using the one or more best next narrow beam candidates in order to select a next narrow beam. The method also includes communicating with the UE using the selected next narrow beam.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for channel occupancy sharing conditions for beam-based channel access. In some aspects, one or more wireless devices may support a beam-based channel access procedure according to which a first wireless device may share a channel occupancy time (COT) of a second wireless device without performing a listen-before-talk (LBT) procedure if one or more conditions associated with a transmission from the first wireless device are satisfied. Such conditions may be associated with whether a directional beam used by the first wireless device satisfies a narrow beam condition, a time gap between a transmission from the second wireless device and a transmission from the first wireless device, or a duration of a continuous transmission from the first wireless device, or any combination thereof.