318 results about "Spatial multiplexing" patented technology

Resource allocation is provided for an integrated access and backhaul (IAB) network, such as a distributed unit (DU) of an IAB. Methods and systems for allocating resources include allocating a first cell-specific pattern of downlink-flexible-uplink (DL-F-UL) availability for one or more slots, allocating a second cell-specific pattern of DL-F-UL availability for the one or more slots. The IAB DU can signal one or more of the first and second cell-specific patterns to an other IAB DU. At least one of the first cell-specific pattern and the second cell-specific pattern defines a slot format different from a DL-F-UL format. Slot format configuration (e.g., semi-static or dynamic SFI) are provided to support space division multiplexing / spatial multiplexing (SDM).

The invention relates to the technical field of electronic information, in particular to a multi-band cooperative interference gallium nitride phased-array antenna control method and system. The method comprises the steps of extracting key parameters of electromagnetic signals, and generating a cooperative interference strategy combination; mapping the frequency band optimization weight to a dynamic working mode of the gallium nitride power amplifier unit, adjusting the radiation pattern characteristics of the reconfigurable dipole array according to the power distribution parameters, and constructing a composite beam forming framework; phase weighting and spatial multiplexing are carried out on the interference signals of all the frequency bands based on the composite beam forming architecture, and a multi-beam interference cluster is generated; thermodynamic state data of the gallium nitride power amplifier module in the multi-beam interference cluster generation process are collected in real time, and heat dissipation parameters of the liquid cooling system are regulated and controlled according to the thermodynamic state data. Intelligent collaboration and accurate pointing of multi-band interference signals are realized, the interference coverage range and the energy utilization rate are improved, and an efficient interference system integrating electromagnetic sensing, multi-beam collaboration and thermal management is formed.

The invention provides a 5G communication method and system based on environmental adaptation, and the method comprises the steps: fusing electromagnetic field intensity distribution, a terminal density thermodynamic diagram and obstacle reflection data through distributed sensing nodes, and generating a dynamic environment sensing matrix. Based on the matrix, establishing a beam pointing model of the motion trail of the user equipment cluster, dynamically adjusting the radiation direction of a beam main lobe, and creating a null region. And in combination with real-time channel multipath phase characteristics, non-uniform interval subcarrier distribution is reconstructed, and multipath phase compensation is carried out. A main lobe radiation direction and a subcarrier distribution mode are integrated into a physical layer structure, and the spatial multiplexing density of a time-frequency resource block is dynamically adjusted according to a service priority. And iteratively optimizing a collaborative matching threshold value of each parameter through closed-loop interaction of a forward channel response feature and a reverse control instruction. According to the invention, the anti-interference capability and the spectrum efficiency of the communication system are improved.

The utility model discloses fixed wiring terminal automatic assembling equipment which comprises a machine frame, a base body feeding vibration disc and a metal sheet feeding vibration disc, a station adjusting assembly is arranged on the machine frame, and an assembling positioning tool is connected to the station adjusting assembly. A transverse transmission assembly, a longitudinal transmission assembly and a discharging station are arranged on the periphery of the station adjusting assembly. A base moving and taking assembly is arranged on the transverse transmission assembly, and a metal sheet moving and taking assembly and a screw assembling assembly are arranged on the longitudinal transmission assembly. According to the fixed type wiring terminal automatic assembling equipment, full-process closed-loop automatic production including feeding, assembling, rotating, secondary assembling and discharging is achieved, the longitudinal transmission assembly is responsible for metal sheet moving and taking and screw assembling, the longitudinal transmission assembly and the longitudinal transmission assembly share a longitudinal rail, time division multiplexing and efficient connection are achieved, the station adjusting assembly automatically adjusts an assembling positioning tool, and the assembling efficiency is improved. A single set of equipment can complete double-sided assembly, multi-process parallelism and spatial multiplexing of the wiring terminal step by step, and the production takt of the wiring terminal is greatly reduced.

The invention discloses a spatial multiplexing acoustic hologram design method based on a physical model neural network. Parameters are determined according to a target spatial multiplexing design scene, a sound wave propagation model and a deep learning model are established, the input of the deep learning model is a random noise image, the output of the deep learning model is a transducer array selection area graph and a phase plane graph, and the sound wave propagation model and the deep learning model are combined to establish an overall model to be combined with a target sound field graph for training; and after training, obtaining a transducer array selection area graph and a phase plane graph. According to the method, the problem that artifacts exist in multichannel information due to lack of global optimization in a traditional angular spectrum iterative design method is solved; the method overcomes the defects that an existing deep learning method consumes time and labor and is poor in robustness, and specific parameters cannot be designed according to the design requirements of the target holographic sound field when a data set is constructed, optimization design can be carried out on multiple target holographic sound fields at the same time, and any holographic sound field can be designed in a self-adaptive mode.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an uplink message (e.g., a scheduling request) indicating one or more beam directions (e.g., one beam direction, a set of beam directions, a sequence of beam directions), one or more beamwidths (e.g., for the one or more indicated beam directions), an angular area of interest for radar sensing, or a combination thereof. The network entity may then provide, to the UE, a grant of resources for performing the radar sensing on specific radar sensing transmit beams (e.g., that will not interfere with other radar sensing by other UEs, uplink communications form other UEs, sidelink communications by other UEs, etc.). The UE may indicate the directions of the beams with reference to a global coordinate system. The network may configure the UE with lookup tables (LUTs) defining relationships between indices, beam directions and / or beamwidths.

The invention relates to the technical field of optical devices, and provides a tunable metasurface structure, an imager and a target recognition method, the tunable metasurface structure comprises a first electrode layer, a second electrode layer, a liquid crystal layer and a metasurface layer; voltage is applied to the first electrode layer and the second electrode layer to control the turning direction of liquid crystal molecules in the liquid crystal layer so as to adjust the polarization state of light in an incident image; the metasurface layer performs different responses on light rays in different polarization states through polarization multiplexing, a left-hand circular polarization state and a right-hand circular polarization state are used for encoding positive and negative values of weights, and a multi-channel A * A light spot matrix is generated through spatial multiplexing, so that an emergent feature image is determined through the light spot matrix; different light spot brightness in the light spot matrix is used for representing different convolution kernel weights. The metasurface and the liquid crystal are combined to obtain a tunable structure, various coding information can be processed, and therefore the object recognition accuracy and robustness are improved.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling indicating multiple transmission-reception points (TRPs), and may perform measurements for reference signals received from the multiple TRPs within a set of measurement resources. The UE may transmit a channel state information (CSI) report including a first CSI part and a second CSI part, where at least one of the first CSI part or the second CSI part indicates a first mapping between a first set of TRPs and a first set of spatial multiplexing layers, and a second mapping between a second set of TRPs and a second set of spatial multiplexing layers. The UE may then receive a phase-coherent joint transmission of a downlink message from the first set of TRPs in accordance with the first mapping, or from the second set of TRPs in accordance with the second mapping.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure relates to operation of a user equipment (UE) and a base station. Specifically, the present disclosure relates to a method for transmitting or receiving data or a reference signal in a wireless communication system and an apparatus for performing the same.

An access point (10) of a wireless communication system configures a carrier for communication with one or more wireless devices (11) associated with the access point (10). Further, the access point (10) contends for access to the carrier and, in response to winning contention for access to the carrier, reserves a transmission opportunity, TXOP, on the carrier. Further, the access point (10) cooperates with one or more other access points (10) of the wireless communication system by sharing the TXOP based on spatial multiplexing of wireless transmissions on the carrier.

Certain aspects of the present disclosure provide techniques for wireless communications. One example method includes receiving, from a backscatter device, a spatial multiplexing capability report; transmitting, to the backscatter device, a reference signal reflection configuration; and transmitting, to the backscatter device, a transmission grant for a backscatter link.

The invention discloses a polarization imaging device and a polarization analysis method based on single-frame polarization collinear holography, and relates to the field of polarization imaging.According to the polarization imaging device, through combination of optical elements such as a half-wave plate, a Wollaston prism and a CCD camera, spatial multiplexing of a detector plane is carried out, and the polarization collinear holography is obtained. And four polarization collinear holograms can be simultaneously acquired by a single frame. According to the polarization analysis method, a Fourier transform auxiliary angular spectrum method is adopted to analyze an intensity distribution diagram of a polarization collinear hologram to estimate initial wavefront distribution, and an iterative finite support constraint selection method is adopted to solve the problem of twin images in the polarization collinear hologram. And further quantizing a complete Jones matrix and a complete Stokes parameter from the finally reconstructed complex amplitude information. The invention solves the problems of high complexity and long processing time caused by independent reconstruction of amplitude, phase and polarization in the traditional polarization holographic technology, and effectively solves the problem that the traditional off-axis polarization holographic imaging system limits the size of an imaging field of view.

The invention discloses an intelligent factory wireless communication method based on an all-in-one antenna technology, and relates to the field of wireless communication, and the method comprises the steps: obtaining the number of all-in-one antennas of a transmitting end and a receiving end of a communication line, and the structure of an all-in-one antenna PCB; optimizing a wireless transmission mode of the base station through a spatial multiplexing and channel estimation technology; planning a wireless network according to the optimized base station wireless transmission mode comprises planning an all-in-one antenna position, an optimal signal coverage area and a network capacity; and performing security pre-coding on the all-in-one antenna, and optimizing a wireless network. The structure of the all-in-one antenna and the wireless network arrangement are reasonably designed, the mode that multiple communication modules transmit information at the same time is met, wireless signal transmission of mobile equipment and fixed equipment is met at the same time, the wireless communication network is optimized from all aspects, and the wireless communication efficiency is improved. Therefore, the accuracy and effectiveness of a wireless communication channel are ensured, the transmitting and receiving loss of the base station is low, the channel data rate, accuracy and safety are high, and the overall effect of antenna setting is optimal.

A method is disclosed of a transmitter configured to transmit more than one spatially multiplexed streams having a multi-user physical layer packet for a plurality of users. The plurality of users includes a first type user and a second type user. A first stream is assigned for the first type user and a second stream is assigned for the second type user. The method includes leaving a data field of the physical layer packet empty for the first type user, providing second type user emission strength (in a spatial direction towards the first type user) that falls below a threshold value by controlling a spatial emission pattern associated with the second type user for the physical layer packet, and transmitting the physical layer packet.

This disclosure provides methods, components, devices and systems for using a unified framework for coordinated transmission modes, such as a coordinated beamforming (CBF) mode, a coordinated spatial reuse (CSR) transmission mode, and a dedicated transmission opportunity (TXOP) transmission mode. Some aspects more specifically relate to a sharing and shared access point (AP) exchanging communications that facilitate the utilization of a transmission mode. In some implementations, a first AP may transmit, to a second AP, a trigger message that includes an indication of a first station (STA) to be scheduled during a TXOP. The second AP may respond with an indication of whether the second AP can attenuate a transmit signal to the first STA to facilitate the CBF mode. The first STA may proceed with communications via the CBF mode, CSR mode, or dedicated mode in accordance with whether the second AP can attenuate the signal, among other considerations.

Embodiments of the disclosed technology are directed to spatially multiplexing different digital data streams which are generated within a distributed network (e.g., MANET, cellular, or Wi-Fi) and are simultaneously transmitted towards a destination radio with multiple antenna elements. An example method for collaborative communication includes clustering the plurality of nodes into a plurality of clusters such that each of the plurality of clusters communicates with a distinct antenna of the plurality of antennas, and performing distributed beamforming in each of the plurality of clusters to transmit a corresponding message of multiple messages directed to the distinct antenna. The described embodiments enable improved performance over existing systems, e.g., increased outage capacity with increasing cluster size.

Provided are a spatial reuse method and apparatus. The method includes: receiving a radio frame and determining whether the radio frame carries a trigger frame configured to trigger uplink multi-user transmission according to indication information of the trigger frame in a physical signaling field of the radio frame; when the trigger frame is determined to be carried in the radio frame, receiving, by a station, the trigger frame, and acquiring first spatial reuse information of the trigger frame; at an end of a radio frame reception process, determining whether to perform first spatial reuse according to the first spatial reuse information. The present disclosure solves the problem in the related art of low spatial reuse efficiency when a station performs spatial reuse on a radio frame and achieves a technical effect of improving network performance.

An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.

The invention relates to a silicon nitride-based vertical coupling multilayer waveguide structure, which is constructed on a silicon substrate and comprises at least two groups of silicon nitride buried waveguide layers, each group of buried waveguide layers consists of a silicon oxide lower cladding, a silicon nitride waveguide and a silicon oxide upper cladding, and the silicon oxide upper cladding is used as the lower cladding of the next group of buried silicon nitride waveguide; and longitudinal spatial multiplexing is realized.

The invention discloses a low-complexity channel estimation method and device based on an MIMO system, and the method comprises the steps: recovering a complete matrix through an approximate low-rank matrix, carrying out the singular value decomposition of the complete matrix, building a large-scale spatial multiplexing MIMO system model, carrying out the conversion processing of a received signal on a kth antenna, and obtaining a transmission signal estimation value, and performing channel matrix recovery on the transmission signal estimation value by using an approximation algorithm to obtain a channel matrix estimation value, finally performing signal detection on the channel matrix estimation value by using a zero-forcing technology, and performing iterative updating to obtain an optimal transmission signal estimation value, thereby effectively reducing the algorithm complexity and effectively reducing the calculation amount. The estimated channel matrix is effectively equivalent to the complete channel matrix, and the channel matrix is updated through iterative updating, so that the dynamic change of the channel can be effectively tracked, and the final demodulation signal precision is ensured.

This disclosure provides methods, components, devices and systems for signal strength-based selection between spatial reuse or multi-primary channel communication modes. Some aspects more specifically relate to how an access point (AP) or station (STA) may select between a spatial reuse communication mode or a multi-primary channel communication mode in accordance with a threshold value and one or more signal strength measurements at the AP or STA. In some examples, the AP may transmit an indication of the threshold value to the STA. In some aspects, the AP or STA may select the spatial reuse communication mode in accordance with the signal strength measurement(s) at the AP or STA satisfying the threshold value. In some other aspects, the AP or STA may select the multi-primary channel communication mode in accordance with the signal strength measurement(s) at the AP or STA failing to satisfy the threshold value.

Techniques for improved spatial reuse for wireless local area network (WLAN) networks are described. An access point (AP) may win a contention to a wireless medium and obtain a transmission opportunity (TXOP). The AP may perform a procedure to identify a group of un-managed APs for participation in spatial reuse opportunities for synchronous transmission over the TXOP. The AP may perform the procedure using over-the-air signaling. The AP may transmit a spatial reuse (SR) poll frame to one or more un-managed APs of the network, either sequentially or as part of a multiple-AP procedure. The AP may receive an SR response frame, or directly measure potential interference of a station (STA) serviced by one or more un-managed APs, and select a group of APs for coordinated reuse over the TXOP. The AP may select the group of APs based on one or more criteria for coordinated reuse.

The invention belongs to the technical field of micro-nano optics. The invention provides a multi-focus off-axis super lens of a visible light wave band. The multi-focus off-axis super lens comprises a plurality of groups of off-axis single-focus sub super lens assemblies which are circularly arranged, wherein each group of off-axis single-focus sub super lens assemblies comprises a plurality of off-axis single-focus sub super lenses which are concentrically and annularly distributed; wherein the off-axis single-focus sub-super-lens comprises a micro-structure unit and a substrate unit, the micro-structure unit comprises a plurality of micro-structure columns which are uniformly arranged, and one end of each micro-structure column is arranged on the substrate unit. According to the embodiment of the invention, on the basis of a geometric phase modulation principle, through reasonable phase design and microstructure arrangement, the off-axis single-focus sub-super-lens has a designed focus position; through spatial multiplexing of the micro-structures of the multiple off-axis single-focus sub-super-lenses, one super-lens has the phase characteristics of the multiple off-axis single-focus sub-super-lenses, and the functions of the multiple off-axis single-focus sub-super-lenses are achieved on one super-lens.

A wireless device may include a transceiver configured to communicate through a first link and a second link. The wireless device may be configured to indicate, through the transceiver, a number of spatial streams associated with the first link. The wireless device may include one or more radio frequency (RF) chains and may be configured to indicate a sharing capability of the one or more RF chains between the first and second links. The wireless device may be configured to perform a collision avoidance operation based on switching an RF chain from the first link to the second link. The wireless device may be configured use an RF chain on the first link based on the availability of the first link. A method of performing a sounding operation may include initiating a sounding sequence on a link based on a sounding feedback capability of a wireless device.

Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

An access point (AP) transmits a first physical layer protocol data unit (PPDU) comprising an indication to a first station (STA) to measure a receive power of a second PPDU transmitted by a second STA. The AP transmits to the first STA a third PPDU comprising an indication of a parameterized spatial reuse (PSR) parameter for use by the first STA to determine a transmit power for a fourth PPDU.

The invention relates to the technical field of optical devices, and provides a self-tuning metasurface structure, an imager and a target recognition method, the structure comprises a polaroid, an electrode layer with a plurality of sub-electrodes, a liquid crystal layer with a plurality of pixel units and a metasurface layer with a plurality of periodically distributed nano-columns; the brightness of each light spot in the light spot matrix is independently adjusted by controlling the applied voltage of each sub-electrode on the corresponding pixel unit, cooperating with the polaroid for amplitude adjustment and combining with the phase adjustment of the corresponding nano-column in the metasurface layer; generating a multi-channel B * B light spot matrix through spatial multiplexing, and determining an emergent feature image through the light spot matrix; different light spot brightness in the light spot matrix is used for representing different convolution kernel weights. The liquid crystal layer is adjustable in light amplitude, the metasurface layer is adjustable in phase, the imaging quality and the minimum resolution are improved, various coding information can be processed, and therefore the object recognition accuracy and robustness are improved.

The invention relates to a two-dimensional spatial multiplexing multi-path synthesis power amplifier circuit, which comprises an input power division network for distributing signals to each path of two-dimensional spatial multiplexing module for signal amplification; the two-dimensional space multiplexing module is used for placing the adjacent multi-path amplifying units or transmitting units in the same area, so that m * N paths of amplifying units or transmitting units are realized in N paths of areas, power synthesis miniaturization is realized, and signals are sent to an output synthesis network; and the output synthesis network is connected with the outputs of the two-dimensional spatial multiplexing modules, and outputs the output signals after power synthesis. Compared with a conventional power synthesis technical scheme, the area is more compact, the output power can be doubled under the same area, or the area is saved by 50% under the same output power, the on-chip power synthesis implementation cost can be greatly reduced, the design is simpler and more convenient through mutual decoupling of parameters of the embedded transformer and the peripheral transformer, and the power synthesis efficiency is improved. The design efficiency is improved.

This disclosure provides methods, components, devices and systems that may help various wireless devices perform coordinated spatial reuse in a wireless network. An example method, performed at a first wireless node, generally includes transmitting a first frame indicating a capability of the first wireless node to share a transmission opportunity (TXOP) with one or more candidate nodes. The method also includes transmitting a second frame (i) indicating that a first TXOP associated with the first wireless node is available to be shared with a group of the one or more candidate nodes and (ii) including one or more parameters that indicate one or more constraints on communication during the first TXOP. The method further includes participating in a coordinated transmission with the group of the one or more candidate nodes during the first TXOP using at least one of the one or more parameters.

This invention discloses a method and system for monitoring abnormal data in power grid dispatching. The method includes: embedding multidimensional perturbation codes containing first-type (time-domain delay) and second-type (frequency-domain oscillation) features into dispatching commands; target devices generating physical ripples with specific time-domain fingerprint features in response to dispatching commands, and dynamically selecting a set of responding devices based on node impedance matrices and sensitivity coefficients; target devices and the set of responding devices collaboratively triggering responses with specific frequency-domain fingerprint features, and achieving spatial multiplexing verification through a time synchronization protocol; extracting time / frequency-domain fingerprint features from feedback data, and performing spatiotemporal consistency verification using a dynamic transfer function model and multivariate mutual information entropy. Furthermore, by periodically injecting false interference data, the survival verification of the monitoring system status is achieved. This invention can effectively monitor system failures and identify covert data injection attacks, significantly improving the security defense capabilities of power grid dispatching.