42results about How to "Improve communication reliability" patented technology

This invention provides a wireless communication link selection method and a half-duplex communication system for selecting multiple physical wireless communication links between a transmitter and a receiver in a half-duplex communication system. Both the transmitter and receiver are equipped with switching switches and antennas. The method includes: the transmitter and receiver synchronously and sequentially switching their respective antennas into working states according to their pre-stored switching switch timing sequences; when any transmitter antenna and any receiver antenna are simultaneously in working states, a wireless communication link is formed, and each wireless communication link is traversed at least once; during the transmission period of any wireless communication link, the receiver transmits unidirectional heartbeat packets or time-division bidirectional heartbeat packets with the transmitter through the current wireless communication link; the transmitter and / or receiver that receives the heartbeat packet selects the optimal wireless communication link from the multiple wireless communication links based on the signal strength and packet error rate during the heartbeat packet transmission process.

This invention provides a multi-UAV sensor data acquisition trajectory planning method based on deep reinforcement learning, comprising the following steps: S1, establishing the basic framework of a UAV-assisted sensor data acquisition model in a land scenario; S2, constructing a persistent trajectory planning strategy based on an improved deep reinforcement learning algorithm according to the basic framework, and generating a UAV flight trajectory map that satisfies energy balance constraints and maximizes data acquisition value based on velocity vectors. This invention introduces a feature extraction unit module containing self-attention weight calculation to extract spatiotemporal differential features of sensor observations based on traditional multi-agent deep reinforcement learning algorithms, and combines a packet retransmission mechanism and an energy balance coefficient to optimize UAV flight energy consumption while improving the value and reliability of data acquisition. This system improves the processing efficiency of UAVs for dynamic monitoring tasks.

The invention is suitable for the technical field of satellite communication, and provides an AI-based satellite-ground integrated unmanned aerial vehicle communication channel management method and system, and the method comprises the steps: obtaining the real-time temperature of a radio frequency front-end module of a current unmanned aerial vehicle satellite communication terminal under the condition of determining that a reference temperature node exists, and when the real-time temperature exceeds the reference temperature node, cooling measures of the unmanned aerial vehicle are controlled based on the temperature node, so that the temperature of the radio frequency front-end module is adjusted to be below the reference temperature node in a future time period. According to the method, existing communication links and cooling hardware structures are not changed, the communication stability and reliability after low-orbit satellite link switching can be improved only through control strategy optimization, the risks of short-time link falling and performance degradation are reduced, finer and more intelligent satellite-ground integrated unmanned aerial vehicle communication channel management is achieved, and the method has remarkable engineering practical value.

The invention provides a channel phase extraction method, system and device based on a preamble symbol and a pilot symbol, and a storage medium, and relates to the technical field of wireless communication of the mobile Internet of Things. The method comprises the following steps: a receiver on a gateway receives a LoRa signal sent by a transmitter of a transmitting end node; the receiver determines carrier frequency offset and window time offset according to a lead code symbol and a start frame separator in the received LoRa signal; performing compensation on the received LoRa signal to eliminate phase offset caused by carrier frequency offset and window time offset; determining a sampling frequency offset according to a spectrum peak interval between adjacent lead code symbols in the compensated signal; and performing compensation on the compensated signal to eliminate phase offset caused by sampling frequency offset so as to obtain a re-compensated signal, and determining the channel phase of the channel of the LoRa signal according to the spectrum peak phase of a plurality of pilot symbols with known coding values in the re-compensated signal.

The invention discloses a three-way orthogonal coil receiving and signal merging method and a three-way orthogonal coil receiving and signal merging system for a rotary permanent magnet mechanical antenna, and belongs to the field of magnetic induction communication. The method comprises the following steps: performing analog conditioning and analog-to-digital conversion on received magnetic induction signals in each space direction, performing Hilbert transform on digital signals in each space direction, extracting instantaneous phase information of each channel, and obtaining complex signals in each space direction; and performing amplitude and phase coherence degree estimation on the complex signals in each spatial direction, determining a weight coefficient of each spatial direction based on the coherence degree between the complex signals in each spatial direction, and combining the complex signals in each spatial direction based on the weight coefficient of each spatial direction to obtain a combined signal. The signal amplitude of a receiving end signal is effectively improved, the signal-to-noise ratio is improved, and the direction robustness and the communication reliability of the system in a complex environment are enhanced.

The invention discloses an OCDM channel estimation method based on deep learning. Firstly, an OCDM communication system is built, and a data set is generated; constructing a channel estimation model by using a convolutional neural network (CNN); inputting the data set into a neural network channel estimation model, and training the model; an Adam optimizer and a mean square error function are used for optimization to promote fitting convergence; and finally, inputting a result into an equalizer to complete signal recovery. According to the method, the precision and the accuracy of channel estimation are effectively improved, the problem of low channel estimation precision caused by a small number of cyclic prefixes and pilot frequencies is solved, and the anti-interference capability and the communication reliability of the system are enhanced.

The invention provides a communication method of a power supply system, host equipment, slave equipment and the power supply system. The method comprises the following steps: receiving a second feedback message sent by a second slave device based on an inquiry message of a host device; wherein the power supply system comprises a host device and a plurality of slave devices, and the first slave device is any one of the plurality of slave devices; the second slave equipment is slave equipment except the first slave equipment; the inquiry message is a message broadcasted by the host device to a plurality of slave devices; determining a first communication starting moment of the first slave device based on the first sequence identifier of the first slave device and the second sequence identifier of the second slave device; wherein the sequence identifier is used for indicating a message sending sequence among the plurality of slave devices; and starting to send a first feedback message of the first slave equipment from the first communication starting moment. The mode improves the communication reliability of the power supply system.

This application relates to a real-time network synchronization communication system, belonging to the technical field of computer network communication. The system comprises four core modules: a hardware optical I / O synchronization module, integrating a multi-wavelength optical transceiver array and anti-jitter circuitry, providing a nanosecond-level global clock signal with a synchronization accuracy ≤15ns; a timing orchestration module, based on time-sensitive networking, dividing fixed time windows and dynamic buffer windows, supporting the priority preemption mechanism of the SRIO bus to achieve deterministic data transmission; distributed RTDATA nodes, replacing traditional single-board computers, integrating heterogeneous computing units and intelligent storage controllers, reducing protocol stack processing latency through zero-copy technology; and a dynamic multicast routing system, constructing secure and isolated multicast trees on demand, and optimizing link load distribution using machine learning. This application solves the problem of decreased real-time performance caused by multi-node communication concurrency through the collaborative design of hardware optical synchronization and dynamic data orchestration.

This invention discloses an integrated sensing, driving, and control system and method for micro-nano robots based on an optical communication protocol. The system includes a control module and connected optical communication, multimodal sensing, driving, and power management modules. The optical communication module uses a preset protocol to achieve bidirectional conversion between optical and electrical signals. The downlink uses PWM encoding and near-infrared light, while the uplink uses Manchester encoding and blue light. The multimodal sensing module integrates multiple sensors, and the sampling parameters are dynamically configured by the control module. The driving module converts control commands into PWM signals to precisely drive micro-actuators. The power management module switches between working and sleep modes according to commands. The control module is responsible for command decoding and system scheduling. This system achieves efficient collaboration of communication, sensing, driving, and control on a single chip, featuring high integration, reliable communication, low latency, and low power consumption. It provides a core technology solution for the application of micro-nano robots in complex environments such as biomedicine and environmental monitoring.

The application discloses a multi-connected system communication method and a multi-connected system, and belongs to the field of multi-connected systems. The multi-connected system communication method comprises the following steps: in the networking stage, a first processing device generates a static address list; based on the static address list, a dynamic address requirement is multicast; first response information sent by each device node is received; the first response information comprises a combined address; a device node corresponding to a dynamic random address greater than a target threshold in the dynamic random address in the combined address is subjected to dynamic address re-distribution, and a new dynamic random address is generated; and the dynamic random address and the static address are mapped to obtain a dynamic-static address mapping list. The multi-connected system communication method can realize setting of dynamic random addresses of each indoor unit and a gateway based on an outdoor unit online distribution mode without manual dialing, and improves the convenience and flexibility of multi-connected system factory installation.

The invention discloses a container real-time monitoring method based on the satellite internet, and relates to the technical field of container satellite positioning. An autonomous node is arranged in each container, and a dual-mode communication system is constructed through industrial internet satellite short message communication and UWB near-field grid communication. When satellite signals are normal, data are directly uploaded, and when the satellite signals are blocked, the data are converged to edge nodes for uplink through a multi-hop UWB link. Through a calculation mechanism combining relative positioning and absolute positioning, continuous position calculation in a satellite failure environment is realized. A controllable electromagnetic metamaterial unit is arranged on the surface of the autonomous node, and zero active radio frequency power consumption communication is achieved in a passive echo modulation mode. And in combination with a hierarchical grid structure and a dynamic edge node election mechanism as well as an energy collection and deep dormancy control strategy, low-power-consumption, continuous and anti-blocking real-time monitoring in a global environment is realized.

This disclosure relates to communication methods, communication devices, systems, storage media, and program products. The communication method, executed by a terminal, includes: the terminal sending a first message, wherein the terminal's Global Navigation Satellite System (GNSS) state has changed; the first message including first indication information indicating the GNSS state; the terminal receiving a second message from a network device, the second message including second indication information instructing the terminal to perform time-domain offset adjustment and frequency-domain offset adjustment in response to the GNSS state change; and the terminal sending a third message on a first resource, wherein the first resource is a resource after time-domain offset adjustment and frequency-domain offset adjustment based on the second indication information. This disclosure improves communication reliability by enabling the terminal and network device to communicate in response to changing GNSS states.

This application provides a communication method, apparatus, electronic device, storage medium, and program product. The method is applied to a network device and includes: sending first indication information to a terminal device, the first indication information being used to instruct the terminal device to send a response message corresponding to a first message at a first feedback opportunity among multiple feedback opportunities; wherein the time difference between the first feedback opportunity and a first moment is greater than a preset threshold, and the first moment is the moment when the network device sends the first message. The above method can improve communication reliability.

The application discloses a kind of satellite-borne four-channel Ka frequency band data transmission channel systems, it is related to satellite communication technical field, including, the original spectrum data of acquisition Ka frequency band inner frequency point, synchronous reception interference hot area database, construct original spectrum matrix, and mark interference area, generate spectrum map with interference mark;With interference mark spectrum map input pre-trained convolutional neural network, output each frequency band interference probability, and identify safe frequency band, and safe frequency band is segmented into micro sub-band, and the optimization allocation scheme is optimized by Q-learning algorithm, and the optimized spectrum configuration table is generated;According to bandwidth parameter in the optimized spectrum configuration table, dynamically adjust modulation mode, and high-speed AOS data is blocked according to frame, and network coding check package is generated in combination with channel allocation strategy in the optimized spectrum configuration table.The application improves the spectrum utilization, communication reliability and overall performance of satellite-borne Ka frequency band data transmission system under dynamic environment.

The invention relates to the technical field of communication, and particularly provides a reconfigurable intelligent surface-assisted ocean communication method and system based on LR-BCD, and the method comprises the steps: constructing an RIS-assisted ocean communication system model; constructing an ocean double-path channel model based on an ocean double-path propagation theory in combination with a sea surface reflection coefficient; singular value decomposition (SVD) is utilized to extract low-rank features of a channel, and high-dimensional beam forming and phase shift optimization problems are projected to a low-dimensional subspace; constructing a low-dimensional and rate maximization problem, and converting the problem into a convex subproblem through a weighted minimum mean square error (WMMSE) criterion; utilizing a block coordinate descent (BCD) algorithm to alternately iteratively update a low-dimensional precoding matrix and a phase shift vector; and finally, reconstructing the optimized low-dimensional variable back to a high-dimensional space and carrying out discretization quantization. According to the method, the sparsity of an ocean channel is utilized, the calculation complexity of large-scale RIS optimization is remarkably reduced through dimension reduction processing, and meanwhile the system and rate performance equivalent to that of a full-rank algorithm is kept.

The invention provides a multi-link redundancy control system and method, and the system comprises a data collection device which is used for collecting the data of a fully mechanized coal mining face; the controller is used for receiving the data acquired by the data acquisition equipment and sending the data to a server through a plurality of redundant interfaces of the controller via a communication link; wherein the controller comprises a plurality of redundant interfaces, and each redundant interface is provided with a corresponding communication link; and a plurality of communication links, each communication link is connected with the corresponding redundant interface, and the communication protocols of the communication links corresponding to the plurality of redundant interfaces are different from each other. The system can adapt to severe conditions of high temperature, high humidity, large inclination angle, complex electromagnetic environment and the like, and ensures that data transmission of the hydraulic support electrohydraulic control system is not influenced by single link faults, so that potential safety hazards caused by communication problems are reduced, and the data acquisition and control capability of a fully mechanized coal mining face is enhanced.

The application relates to the technical field of charging pile management and control, in particular to a charging pile management and control system and method with double-redundant lines. The system comprises a plurality of charging piles and a charging system server; each charging pile is provided with a charging control module and an auxiliary control module; each charging control module comprises a charging control unit, a data acquisition unit electrically connected with the charging control unit, and a communication transmission unit electrically connected with the charging control unit and the data acquisition unit; each auxiliary control module comprises an auxiliary control unit electrically connected with the charging control unit in the charging control module arranged in the same charging pile, and a regional data storage area electrically connected with the auxiliary control unit. The safety of the data of the charging pile itself can be improved and the communication reliability between all the charging piles in the whole region and the charging system server can be improved through the two redundant communication lines.

The utility model relates to energy storage battery technology field provides a kind of BMS topological device, the device includes multi-channel AI analog input unit, multi-channel DI digital input unit, main control MCU chip, DO digital output unit and RTC real-time clock submodule, wherein: the multi-channel AI analog input unit, multi-channel DI digital input unit and RTC real-time clock submodule are connected with main control MCU chip, and the main control MCU chip is connected with DO digital output unit. The utility model is highly integrated and optimized connection by multi-channel AI analog input unit, multi-channel DI digital input unit, main control MCU chip, DO digital output unit and RTC real-time clock submodule, realizes the integrated processing of battery management system key function, simplifies the redundant problem of the quantity of controller in traditional three-level architecture BMS system, reduces the complexity of hardware configuration and communication network, effectively reduces system total cost and fault point quantity.

The invention discloses a method for improving noise robustness of a single photon communication system based on a super-bunching light field, and belongs to the technical field of optical communication and single photon detection. The method comprises the following steps: preparing a super-bunching light field through an ultrashort pulse laser pumping photonic crystal fiber, and dividing the super-bunching light field into signal light and reference light; after loading modulation information, the signal light and noise are subjected to mixed detection, and the photon arrival time is recorded; the time correlation characteristic of the reference light and the photon bunching statistical characteristic of the super-bunching light field are used for carrying out statistical judgment on the mixed photon event, effective signal photons are screened, and demodulation is completed. According to the invention, a low bit error rate can be maintained under the background of single photon magnitude and strong noise, the noise robustness and communication reliability of the system are significantly improved, and the method is suitable for low-light, long-distance and high-noise communication scenes.

The application provides an electric control system of an aircraft refueling vehicle and the aircraft refueling vehicle. The electric control system of the aircraft refueling vehicle comprises a plurality of electric control modules, the plurality of electric control modules comprise a plurality of modules selected from a master control module, a refueling control module, a safety monitoring module, a metering module, a display module, an interaction module and a storage module, each electric control module comprises at least one electric control element, and the plurality of electric control modules are connected through joint connectors. According to the application, the electric control modules can be conveniently added or reduced, the electric control system can be conveniently redesigned according to actual requirements, the design cycle is shortened, each electric control module is conveniently maintained, and the maintenance cost is reduced.

The application relates to the technical field of robots, and particularly discloses a robot bus control system and method, which comprises a main controller and a sub-controller that are connected in communication with each other, and the sub-controller is connected in communication with each controlled node; the main controller is used for sending a data packet to the sub-controller when receiving a data request sent by the sub-controller, and if no correct feedback data of the sub-controller is received within a preset time length, the same data packet is continuously sent to the sub-controller for a preset number of times. If it is determined that the main controller does not receive the correct feedback data of the sub-controller within the preset time length after the main controller sends the data packet to the sub-controller, the main controller continuously sends the same data packet to the sub-controller for a preset number of times, that is, a redundant retransmission mechanism is established when communication errors occur, so that communication abnormalities caused by external interference are reduced, and the reliability of communication between the main controller and each controlled node is improved.

This application discloses a method, apparatus, device, storage medium, and program product for controlling a drone, relating to the field of Internet of Things (IoT) technology. The method, applied to a drone, includes: acquiring communication data, noise information, and first state information of the drone in its communication link; the communication data including second state information of surrounding drones; determining the drone's signal-to-noise ratio (SNR) and the corresponding number of retransmission frames based on the communication data and noise information; retransmitting communication information to the corresponding surrounding drones and communication devices based on the number of retransmission frames; and / or, determining the drone's node score based on the first state information; if the drone is a relay node and its node score is less than a set threshold, sending a rotation request to multiple surrounding drones; and determining a new relay node and its slaves based on the second state information. Therefore, the embodiments of this application improve the communication reliability of the drone control method.

The embodiment of the invention provides a communication perception integrated game anti-interference method and device, equipment and a medium. The invention relates to the technical field of signal transmission. The method comprises the following steps: acquiring to-be-sent information needing to be sent to a user side by a base station; obtaining the target beam forming of the base station, the target trajectory of the unmanned aerial vehicle and the target beam forming of the unmanned aerial vehicle; sending the information to be sent to the user side based on the base station according to the target beam forming of the base station; and sending the to-be-sent information to the user side based on the unmanned aerial vehicle according to the target trajectory of the unmanned aerial vehicle and the target beam forming of the unmanned aerial vehicle. The method is used for achieving the technical effect of improving the transmission quality of signal transmission.

This invention discloses an adaptive filtering and noise reduction system based on a variable step-size minimum mean square error algorithm, comprising a main signal link and a closed-loop control module. The main signal link integrates a low-noise amplifier, an analog-to-digital converter, and an adaptive filter, responsible for precise signal amplification, efficient analog-to-digital conversion, and flexible filtering. The closed-loop control system, through the close collaboration of a noise detection unit, a spectrum analysis unit, and a parameter adjustment unit, captures and analyzes the noise spectrum characteristics in real time, and then dynamically optimizes the filtering parameters to achieve the best noise reduction effect. The parameter adjustment unit of this invention employs a variable step-size minimum mean square error algorithm. Leveraging its unique real-time amplitude feedback mechanism for the error signal, combined with the nonlinear characteristics of the hyperbolic tangent function, it cleverly achieves dynamic adjustment of the step size, thus achieving an ideal adaptive balance between rapid convergence and low steady-state error.

The invention provides a communication module anti-interference message transmission method and an electric energy meter. The communication module anti-interference message transmission method comprises the steps that a communication module receives communication data sent by a master station; the communication module encapsulates the communication data into a frame structure conforming to a preset HDLC protocol, and sends the frame structure to the main control module through a physical communication interface; the main control module receives the frame structure, determines the frame boundary of the frame structure according to the start mark and the end mark, and performs integrity verification on the frame structure by using the verification sequence; and if the verification result is that the verification is passed, the main control module sends preset response information to the communication module, and analyzes the communication data from the information field. In the mode, an HDLC protocol packaging and checking mechanism is introduced into the physical connection of the communication module and the main control module, so that frame boundary self-synchronization and content integrity detection in a data transmission process can be realized, and the communication reliability and the data accuracy of the electric energy meter in a complex electromagnetic interference environment are improved.

A human-powered vehicle component (BC1) includes wireless communicator circuitry (WC). The wireless communicator circuitry (WC1) is configured to wirelessly transmit at least two first signals (SG1) to the additional human-powered vehicle component (BC2) at a first period (C1) in a first state (ST11) of the human-powered vehicle component (BC1). The wireless communicator circuitry (WC1) is configured to wirelessly transmit at least two second signals (SG2) to the additional human-powered vehicle component (BC2) at a second period (C2) in a second state (ST12) of the human-powered vehicle component (BC1). The second period (C2) is different from the first period (C1). The second state (ST12) is different from the first state (ST11).

A communication method and related devices, in the method, a first communication device can determine a correction parameter based on channel information, and subsequently, the first communication device can perform channel correction on a transmit-receive channel of a terminal device based on the correction parameter. Wherein the first communication device is a device on the terminal side. Through the mode, the first communication device can correct the receiving and transmitting channel of the device at the terminal side through the channel information between the first communication device and other communication devices, and channel errors caused by factors such as hardware inconsistency and environment change can be eliminated or reduced through channel correction of the receiving and transmitting channel, so that the communication efficiency is improved. The signal transceiving performance of the terminal equipment can be improved, and the communication quality and reliability of the terminal equipment are further improved.

This application discloses a method and apparatus for determining the wake-up signal detection window in narrowband Internet of Things (NB-IoT), relating to the field of communication technology and applicable to NB-IoT / 5G NTN systems. During the paging cycle switching phase, the IoT terminal acquires standard time and geographic location information through an integrated GNSS module; it calibrates the clock deviation of the local timing module based on the standard time, and calculates the WUS one-way propagation delay by combining the terminal's and network-side device locations; it determines the estimated WUS arrival time and configures a narrow detection window accordingly; the radio frequency receiver listens within the window, triggering the main receiver chain or remaining in sleep mode. In case of GNSS failure, it automatically switches to a wide window mode to ensure service continuity. This technology can reduce the detection window duration, lower terminal power consumption, and improve timing synchronization accuracy.

The invention discloses a low-delay communication method based on multi-core communication. The low-delay communication method comprises the following processing methods: step S1, carrying out software data verification and error correction logic based on a processor instruction set; s2, carrying out timeout retransmission on the running software based on the historical delay data; s3, performing partition management on the dynamic shared memory through a partition page table algorithm and priority scheduling logic defined by software; s4, performing dynamic priority scheduling on the GPIC channel; s5, executing a dynamic power consumption adjusting strategy; and S6, carrying out real-time monitoring and diagnosis. According to the invention, while the communication flexibility and adaptability are ensured, the inter-nuclear communication delay is remarkably reduced, the anti-interference capability is improved, dependence on a special hardware acceleration module is not needed, the adaptability is higher, and the method is suitable for the fields of industrial control, automotive electronics and the like which have strict requirements on the real-time performance and reliability.