77 results about "Mimo communication" patented technology

Methods related to wireless communication systems and uplink (UL) rank adaptation are provided. A user equipment (UE) receives, from a base station (BS), a configuration indicating a resource associated with a plurality of UL reference signal ports. The UE determines, based on at least one of an overheating status, a throughput, or a latency, a quantity of transmission layers for a transmission. The UE transmits, to the BS, an indication of at least one of (1) one or more UL reference signal ports of the plurality of UL reference signal resources associated with the UL reference signal resource based on the quantity of transmission layers, or (2) a number of UL reference signal ports associated with the multi-port UL reference signal resource based on the quantity of transmission layers.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a capability of the UE to communicate in accordance with a polar multi-layer coding (MLC) multiple input multiple output (MIMO) communication scheme. The UE may receive a configuration for communication in accordance with the polar MLC MIMO communication scheme, wherein the configuration indicates a sub-block size threshold. The UE may communicate a message in accordance with the polar MLC MIMO communication scheme based at least in part on a determination that a sub-block size for the message satisfies the sub-block size threshold.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may transmit, and a user equipment (UE) may receive, downlink control information (DCI) scheduling an uplink multiple input multiple output (MIMO) communication. The UE may transmit, and the base station may receive, the uplink MIMO communication using a default sounding reference signal (SRS) resource configuration based at least in part on the UE receiving the DCI prior to a medium access control (MAC) control element (MAC-CE) selecting a subset of uplink transmission configuration indication (TCI) states included in an uplink TCI state pool configured for the UE. Numerous other aspects are provided.

Embodiments of the present disclosure relate to a beamforming solution for FDD MIMO communication. A first device receives a reference signal from a second device in a first channel, and determines a covariance matrix associated with the first channel. The first device determines a set of beamforming vectors from the covariance matrix based on the number of dominant angles of arrival associated with the reference signal and the number of beams associated with the set of beamforming vectors, and performs a transmission to the second device based on the set of beamforming vectors in a second channel. In this way, beamforming vectors can be calculated from the transformed channel covariance matrix with the angular spread and imperfect reciprocity considered.

The embodiment of the invention discloses a vehicle control method and device based on laser communication, equipment and a storage medium, belongs to the technical field of vehicle control, is applied between communication nodes including a vehicle-mounted terminal, and is characterized in that a wavelength division multiplexing-based multi-channel MIMO communication module is configured between the communication nodes, and the method comprises the following steps: obtaining driving information of an ith vehicle; determining decision information for the i-th vehicle based on the driving information; and sending related information of the decision information to two vehicles adjacent to the i-th vehicle in the motorcade through the laser array in the i-th vehicle. Communication is achieved through the multi-channel MIMO communication module, the problems of communication interruption and high time delay caused by electromagnetic interference, high-concurrency channel blocking and the like in communication can be effectively solved, the communication stability is improved, the time delay is reduced, stable links and low bit error rate can be kept in a complex traffic environment, and the communication efficiency is improved. Decision information of the vehicle is expressed to the adjacent vehicle in time, and consumption of hardware computing power is effectively reduced.

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to inter-user-equipment (inter-UE) interference cancellation (IC) for physical downlink control channel (PDCCH) multi-user multiple-input multiple-output (MU-MIMO). In some aspects, a user equipment (UE) may be configured with an indication of cell radio network temporary identifiers (C-RNTIs) and / or scrambling code identities of respective candidate UEs that use the same or overlapping control-channel elements (CCEs) as the UE. In some aspects, the UE may perform the inter-UE IC by decoding a PDCCH communication targeted for one or more of the candidate UEs and subtracting the decoded PDCCH communication from at least a part of a PDCCH MU-MIMO communication such that the remaining signal includes data targeted for the UE.

Techniques and apparatuses are described for multiple-input multiple-output transmissions using adaptive phase-changing devices. In aspects, a base station selects one or more adaptive phase-changing devices, APDs, to use in at least one communication path for multiple-input, multiple-output, MIMO, transmissions. The base station can perform a channel characterization process for the at least one communication path using the at least one APD and at least one UE. Based on results of the channel characterization process, the base station configures the at least one APD by which to implement single user-MIMO communication with a UE or multiple user-MIMO communication with multiple UEs. By so doing, the base station may implement MIMO transmissions using APDs to communicate with the at least one UE using same time and frequency resources, which can improve spectral efficiency of a wireless network.

The invention relates to a communication method and device, a storage medium, communication equipment and a chip. The method comprises the following steps: firstly, a terminal is positioned through Bluetooth multiple antennas, and the relative position between the terminal and network equipment is obtained; and then the terminal performs directional MIMO WiFi communication with the network device based on the relative position with the network device. Through application of the technical scheme of the invention, directional signal transmission can be carried out between the terminal and the network equipment, the interference of a multipath effect can be reduced, and the WiFi communication quality can be improved. And compared with the transmission of omnidirectional signals, the method adopts a directional signal transmission mode, so that the signal transmitting power in an MIMO communication scene can be reduced, and the purposes of saving power and optimizing the network experience of a user are achieved.

Methods, systems, and devices for wireless communications are described. The network entity and a set of UEs may be enabled to refine precoders utilized in communications with each UE. For example, a first UE may utilize reference signaling from a network entity to generate precoding matrix information (PMI) and may transmit the PMI to the network entity, which may forward the PMI to a second UE. The network entity may also forward PMI of the second UE to the first UE. The first UE may utilize the PMI of the second UE, as well as feedback associated with the first UE, to refine the PMI of the second UE, and the second UE may do the same for the first UE. The UEs may transmit the modified PMIs to the network entity, and the network entity may communicate with each of the UEs according to the modified PMIs.

The invention discloses an MIMO patch antenna and a decoupling design method thereof, and relates to the technical field of antenna decoupling, and the antenna comprises a main dielectric substrate, a metal ground and a port antenna module. The metal ground is arranged on the lower surface of the main dielectric substrate, the port antenna module is distributed on the upper surface of the substrate, the port antenna module comprises two parallel and symmetrical radiation units, the two radiation units are rectangular patches, the short edges of the two radiation units are parallel, and the distance between the short edges of the two radiation units is smaller than a preset distance threshold value, so that ultra-narrow distance layout is realized to save space. Each rectangular patch is provided with a feed port, a metal probe which penetrates through the patch is arranged in the middle of each rectangular patch, the bottom of each metal probe is located in the main dielectric substrate, and the frequency band can be expanded to cover the N79 frequency band; a square annular gap and a rectangular gap are further formed in the patch, the capacitor is embedded in the rectangular gap, and the short edge of the rectangular gap coincides with the center of the square annular gap; metal short-circuit columns which penetrate through the patch and the substrate and are connected with the metal ground are arranged at the right-angle and square annular gaps of the patch, so that the port isolation can be improved. According to the antenna, the contradiction between the terminal space and the number of antennas can be relieved, the frequency band coverage and the signal stability are guaranteed, and the high-integration MIMO communication requirement is met.

An electronic device according to the present invention, which is provided with a plurality of sub-arrays including a plurality of antenna elements and which performs multiuser MIMO communication with a plurality of other electronic devices, comprises a precoder that performs precoding in which spatial multiplexing between the plurality of other electronic devices is performed independently for each orthogonal polarization, and transmits, to the plurality of other electronic devices, a signal having been subjected to the precoding by the precoder.

The invention discloses a four-in-one full-band directional antenna, which comprises a reflecting plate, a plurality of FPC antenna units are uniformly arranged on the reflecting plate, each FPC antenna unit has the same structure, each FPC antenna unit comprises a support structure, a microstrip feeder is arranged on the support structure close to the area connected with the edge of the reflecting plate, and the microstrip feeder is connected with the FPC antenna unit. And a radiation patch assembly is arranged on one side, back to the reflecting plate, of the supporting structure. The antenna aims at solving the problems that an existing full-band micro base station antenna is uneven in band performance, serious in unit mutual coupling, drifting in beam pointing, low in efficiency and the like, high-performance and high-consistency stable directional radiation in a full band can be achieved, and high-quality 5G MIMO communication is supported.

Various aspects of the present disclosure generally relate to wireless communications. Various aspects relate generally to multiple-input multiple-output (MIMO) communications. Some aspects are more particularly directed to signaling of demodulation reference signal (DMRS) port combinations according to capabilities of the UE associated with layer 8 downlink MIMO communications. In some examples, a UE may transmit a capability communication indicating whether the UE supports layer 8 MIMO communication, and may receive, in association with the capability communication, an indication of a combination of one or more DMRS ports to be used to receive downlink communication.

The application provides a joint structured OFDM modulation and precoding design method of a large-scale MIMO system, and relates to the technical field of MIMO communication.In the application, a point-to-point large-scale MIMO structured OFDM (mMIMO-SOFDM) system is constructed by using a structured OFDM modulation method; and based on a joint spatial precoding and structured frequency domain equalization scheme, a closed-form solution of each subcarrier frequency domain equalizer, transmission precoding and reception precoding of the mMIMO-SOFDM system is solved.By proposing the structured OFDM scheme, the excessive cyclic prefix overhead caused by the double wideband effect of the large-scale MIMO system is reduced.In addition, the proposed joint spatial precoding and structured frequency domain equalization scheme further improves the spectral efficiency of the system and reduces the peak-to-average ratio.

The present invention discloses a ray tracing channel modeling method for very large-scale MIMO communication, comprising: setting a simulation scenario and simulation parameters for very large-scale MIMO communication, calculating the coherence distance of the very large-scale MIMO antenna array, determining the selection interval of antenna units in the MIMO antenna array, and selecting antenna units for simulation; performing ray tracing simulation on the selected antenna units according to the reflection and diffraction propagation mechanism to determine the propagation trajectory of the rays, determining the ray path in combination with the receiving end in the simulation scenario, and screening out non-repeating ray paths from the ray paths; mapping the non-repeating ray paths to unselected antenna units in the MIMO antenna array to determine the ray paths of the unselected antenna units; and obtaining the channel characteristics of all antenna units in the MIMO antenna array to realize the construction of a ray tracing channel model for very large-scale MIMO communication.

To provide a measuring device that makes the parameter setting screen easy to view, allowing users to easily find the parameter they want to set and thus reducing errors in parameter setting. [Solution] The system includes a display unit 15 that displays an image, and a control unit 16 that, when measuring communication in accordance with the IEEE 802.11be standard, switches the setting screen for the Capability Element parameter between a setting screen for SISO communication and a setting screen for MIMO communication and displays them on the display unit 15.

The invention discloses a multi-antenna communication method and system based on thermal noise modulation, and the method comprises the steps: carrying out the PAM modulation of an input bit stream at a digital processing module of a transmitter, generating a PAM symbol to be transmitted, carrying out the linear transformation, calculating the resistance value of a resistor needed by each transmitting link through a result obtained after the linear transformation, and carrying out the calculation of the value of the resistor needed by each transmitting link; wherein the linear transformation matrix and the bias vector are obtained by solving an optimization problem under limited transmitting power constructed according to a design criterion of a transmitter. In the transmitter analog processing module, the resistance value of the resistor is adjusted according to the calculated value, and thermal noise generated by the resistor is amplified by a low-noise amplifier or is directly transmitted by an antenna. The method is suitable for MIMO communication and MISO communication based on thermal noise modulation, compared with a traditional SISO communication system based on thermal noise modulation, the method can achieve a lower bit error rate on the premise of the same signal-to-noise ratio, and the method is low in calculation complexity and beneficial to engineering implementation.

For example, an apparatus may be a wireless device, such as a UE, configured to receive an indication of at least one shaping operation associated with one or more additional wireless devices of a plurality of wireless devices, where each wireless device of the plurality of wireless devices is associated with MU-MIMO communication, and wherein the first wireless device is included in the plurality of wireless devices. The apparatus may be configured to receive a DL transmission associated with the MU-MIMO communication, perform demodulation of the DL transmission based on the indication, and output a result of the demodulation of the DL transmission for at least one of sending to at least one other wireless device or storing locally at the first wireless device.

Various aspects of this disclosure relate generally to wireless communication. In some aspects, a user equipment (UE) may use a low peak-to-average power ratio (PAPR) sequence generator to determine one or more demodulation reference signal (DMRS) scrambling sequences, each of the one or more DMRS scrambling sequences corresponding to a corresponding port among one or more ports associated with downlink multiple-input multiple-output (MIMO) communication, wherein the downlink MIMO communication is based on Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). The UE may receive the downlink MIMO communication including DMRS according to an in-slot DMRS mode indicating one or more time-domain multiplexed symbols, each of the one or more time-domain multiplexed symbols being at least partially assigned at least one of the one or more DMRS scrambling sequences. Numerous other aspects are described.

The invention discloses a generative artificial intelligence enabled implantable language education VR device, and belongs to the crossing field of artificial intelligence and implantable devices, the device adopts a three-layer composite biocompatible structure such as a bionic phospholipid double-layer membrane, and long-term stable operation is ensured when the device is located in an eyeball. Multi-mode sensing modules such as iris tracking are integrated to collect data in real time, synchronous interaction of 50 persons is supported by combining terahertz MU-MIMO communication and a photon interconnection technology, a dynamic cognitive evaluation model (DCT) is provided by relying on a 3D stacked chip to quantify knowledge mastery and ideological and political expressions, AI is driven to optimize teaching content in real time, and the teaching efficiency is improved. And in combination with a fixation point rendering technology, an immersive and personalized ocean education scene with low delay and high resolution is provided. The method is remarkably innovated in the aspects of artificial intelligence algorithm and VR equipment miniaturization design, and has a very wide application prospect.

A communication device, a control method of a communication device, and a computer program product are provided. A control method of a communication device is provided. The control method includes receiving a wireless frame conforming to an IEEE 802.11 standard series, and decoding the received wireless frame, wherein the wireless frame is for multi-user multiple-input multiple-output (MU-MIMO) communication, wherein a preamble of the wireless frame contains a universal signal field (U-SIG) as a first signal field and a second signal field, wherein the second signal field contains information specifying a number of streams of each communication device participating in the MU-MIMO communication, and information specifying a modulation and coding scheme (MCS) to be used for each stream corresponding to the number of streams, and wherein storing the specific information as the information specifying the MCS indicates that different MCSs are to be used for each of a first stream and a second stream directed to a specific communication device.

The invention relates to the technical field of photovoltaic power station unmanned aerial vehicle inspection, in particular to a photovoltaic power station inspection data acquisition method based on multi-unmanned aerial vehicle collaboration, which comprises the following steps of: firstly, establishing a collaborative inspection data acquisition system comprising unmanned aerial vehicles, a base station, a ground user and a control center, and acquiring original data such as geographic information and sensor parameters of a photovoltaic power station; constructing a multi-unmanned aerial vehicle track and power joint optimization model, an energy consumption model, a data acquisition and transmission model, an information freshness model, an MIMO communication interference control model and a reinforcement learning framework based on a TD3 algorithm, and converting the models into state input, action constraint and reward weight of the framework by taking the joint optimization model as a target; and finally, the control center controls the unmanned aerial vehicle to execute the process of initialization-sensing-communication-feedback-strategy updating, and the process is repeated until the inspection task is completed. According to the invention, autonomous collaborative optimization of multiple unmanned aerial vehicles is realized, inspection efficiency is improved, data freshness is guaranteed, communication interference is reduced, and the method is suitable for intelligent operation and maintenance of a photovoltaic power station.

A technology is described for a dual path repeater configurable for a split mode and a multiple input multiple output (MIMO) mode. The dual path repeater can comprise first and second server ports and first and second donor ports. Four amplification and filtering paths are communicatively coupled between the ports. Each amplification and filtering path include a software defined filter (SDF). The SDFs are configured to filter the same 3GPP bands to provide MIMO communication or the first SDF and the second SDF are configured to filter different bands to enable the dual path switchable repeater to provide split mode communication on multiple TDD / FDD bands.

This disclosure relates to a wireless communication system, a wireless communication method, a control station, and a control program, and aims to improve channel capacity without increasing the number of transmitting and receiving antennas. [Solution] The wireless communication system of this disclosure comprises a control station, a radio station equipped with multiple antennas, and a base station that performs MIMO communication with the radio station. The radio station has a function to vary the relative position of the multiple antennas with respect to the base station according to control information. The control station is configured to perform a process of predicting the relationship between the channel capacity formed between the radio station and the base station and the control information, a process of calculating at least one piece of control information that can improve the channel capacity based on the predicted relationship, and a process of notifying the radio station of the calculated control information. The radio station is configured to perform a process of changing its relative position based on the notified control information.

A first multi-output (MIMO) communication method comprises the steps of generating signaling for one or more devices and transmitting the signaling to one or more devices, wherein for each of the one or more devices, the signaling is for indicating a plurality of streams assigned to the device and a plurality of modulation-coding system (MCS) indices corresponding to each of those streams. Thus, a second MIMO communication method comprises the steps of receiving signaling from a device to obtain a plurality of streams and a plurality of MCS indices corresponding to those streams, and transmitting a signal to the device using the streams with parameters for each stream defined by the corresponding MCS indices. In some embodiments, the signaling is carried in a trigger frame for uplink MIMO communication or in a physical layer protocol data unit for downlink MIMO communication.

Disclosed herein are related to systems and methods for a multiple-input multiple-output (MIMO) communication. In one aspect, during a first time period, a master access point transmits, to a slave access point, information for a joint transmission by the master access point and the slave access point. In one aspect, the slave access point estimates synchronization information for the joint transmission, according to the information for the joint transmission. In one aspect, during a second time period after the first time period, the master access point transmits a portion of a null data packet to a station device. In one aspect, during the second time period, the slave access point transmits the portion of the null data packet to the station device, based on the synchronization information for the joint transmission. In one aspect, the station device determines steering information for the MIMO communication, according to the null data packet.

The invention relates to a wireless communication transmission and detection method based on a BP deep neural network. The method comprises the following steps: S1, expanding a belief propagation iterative algorithm factor graph and mapping the belief propagation iterative algorithm factor graph to a neural network structure to construct a deep neural network for large-scale MIMO system detection; s2, carrying out offline training on the constructed deep neural network; and S3, carrying out online detection by using the trained neural network. The number of hidden layers of the constructed deep neural network is small, so that the complexity of off-line training is reduced; the online calculation complexity of the constructed deep neural network large-scale MIMO system detection algorithm is the same as that of an original belief propagation algorithm, but a lower bit error rate can be achieved, and better robustness is achieved under various channel conditions. The method can be widely applied to the scenes of high-dimensional MIMO communication between a 5G base station and a terminal, large-scale access detection of Internet of Things nodes, high-speed signal decoding of a Wi-Fi / Wi Gi g network and the like.

A base station beamforming method for reducing cross link interference (CLI) on an uplink (UL) band of a first base station (110) caused by a second base station (120) realized by a system comprising the first base station (110), and the second base station (120) having line of sight with the first base station (110) capable of communicate in sub-band full duplex (SBFD) mode and capable of multiple input multiple output (MIMO) communication; and at least a first user equipment (210) and at least a second user equipment (220) capable of communicate in SBFD mode and capable of MIMO communication.

The invention discloses a non-cellular large-scale MIMO (multiple input multiple output) communication integrated system precoding method and device based on multiple reflection points, and belongs to the technical field of wireless communication, and the method comprises the following steps: based on a pre-constructed non-cellular large-scale MIMO communication integrated system model, pre-coding the non-cellular large-scale MIMO communication integrated system model; calculating the rate sum of the communication user, the transmitting power of the access point and the sensing signal-to-noise ratio from the access point to the sensing target direction; the transmission power of the access point and the sensing signal-to-noise ratio from the access point to the sensing target direction are used as constraints, and the rate sum of communication users is maximized by optimizing a precoding matrix of the access point; wherein the cellular-free large-scale MIMO sensing integrated system model comprises a downlink communication channel model and a radar sensing target model. According to the invention, the rate sum of the communication user can be maximized by optimizing the sending precoding matrix of the access point, so that the environment perception capability is effectively improved, and the purpose of improving the communication performance and the perception performance at the same time is achieved.

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may send to a network node an indication of a capability to support high rank multiple input multiple output (MIMO) communications over two or more frequency bands having a common intermediate frequency. The capability to support the high rank MIMO communication includes the capability to support MIMO communication in substantially the same direction and over more than two layers. The UE may perform the high rank MIMO communication with the network node in the substantially same direction over the two or more frequency bands. Numerous other aspects are described.