23results about How to "Increase data transfer rate" patented technology

The invention belongs to the field of wireless communication, and particularly relates to a wireless signal multi-dimensional array coding method and system based on dynamic rank optimization. The method comprises the following steps: detecting state information of a wireless channel, predicting state change of the channel by using a pre-trained deep learning model, and generating a dynamic optimization multiplier; adjusting a preset static optimization multiplier by using the dynamic optimization multiplier, constructing a target function for jointly optimizing the energy efficiency and the spectrum efficiency, and determining an optimal transmission rank by solving the target function; comparing the optimal transmission rank with the current transmission rank to determine a rank-up or rank-down operation; and reconstructing a transmission signal of the wireless channel according to a result of the rank increasing or decreasing operation. According to the method, the optimization target is dynamically adjusted by predicting the channel change, and the asymmetric ascending and descending rank algorithm is adopted, so that the adaptive transmission rank optimization in a complex time-varying channel environment is realized, and the communication performance is remarkably improved.

This invention provides a method for UAV obstacle avoidance trajectory planning based on digital elevation maps, including digital elevation map conversion, initial trajectory loading, trajectory pre-planning, and trajectory re-planning. Using this invention, UAV obstacle avoidance trajectory planning can fully consider terrain variations during low-altitude flight missions to achieve ground-hugging flight. Simultaneously, this method first performs offline trajectory pre-planning and uploads the planned trajectory to the flight controller to provide flight guidance, effectively solving the problem of low real-time performance. When obstacles or threat areas appear on the pre-planned trajectory, the method provided by this invention can find the vertices of obstacles with complex shapes, handle obstacle overlap issues, and thus quickly plan a flight path.

This application discloses a method, apparatus, device, and medium for multi-person voice communication in a live streaming room. The method includes: establishing a direct communication link with viewer nodes corresponding to the direct connection node information broadcast by a media server; when the number of forwards of the broadcaster's voice audio data and the uplink bandwidth meet corresponding preset conditions, comparing the direct connection latency of one or more voice viewer nodes that have established direct communication links with the media server latency, and determining the voice viewer nodes whose direct connection latency does not exceed the media server latency; determining the direct connection transmission capability of each voice viewer node based on the direct connection transmission characteristic information obtained through the direct connection communication links of each voice viewer node, and transmitting the broadcaster's voice audio data with the voice viewer node with the better direct connection transmission capability through the direct communication link. This application pushes the broadcaster's voice audio through a direct communication network, reducing voice latency in multi-person voice live streaming rooms and improving the user's live streaming voice experience.

This invention discloses a partial discharge (PD) signal denoising method based on image information entropy and multivariate variational mode decomposition (MMD). The method involves converting the noisy signal into a grayscale image, calculating the image information entropy, and optimizing the number of modes K in the MMD by combining Pearson correlation coefficient and execution efficiency to determine the optimal value. The noisy PD signal is then decomposed. The kurtosis value of each intrinsic mode component is calculated, and the nature of the mode component is determined based on a threshold, classifying it as either a dominant PD component or a noise component. A mathematical statistical method using the 3σ criterion is employed to filter out normally distributed white noise. The reconstructed signal is then denoised using an improved wavelet thresholding method to obtain the denoised PD signal. This denoising method accurately reduces noise in noisy PD signals, achieving good noise suppression and restoring the waveform characteristics of the PD signal while maintaining high execution efficiency.

The application provides a data transmission circuit and method based on signal conversion, a chip and an electronic device, and belongs to the field of circuits.The data transmission circuit based on signal conversion comprises a first conversion module and a second conversion module.The first conversion module is used for receiving a parallel signal from a first clock domain and converting the parallel signal into a serial signal of a second clock domain, wherein the frequency of the first clock domain is less than the frequency of the second clock domain.The second conversion module is used for receiving the serial signal and converting the serial signal into the parallel signal.The scheme realizes the transmission of the parallel signal from the first conversion module to the second conversion module within a first clock cycle.By applying the data transmission circuit based on signal conversion to transmit signals between FPGAs, a large number of signals can be transmitted from one FPGA to another FPGA within a clock cycle, thereby reducing the difficulty of circuit design and timing convergence.

The invention relates to the technical field of NAS (Network Attached Storage), and discloses a method and a device for realizing NAS stable connection under multiple links, and the method comprises the following steps: after a preliminary connection relationship is successfully established between a client and NAS equipment, proxy service selects an optimal link from all standby links between the client and the NAS equipment as a current link; the proxy service calculates the current transmission rate of the current link by analyzing the proxy traffic of the current link; the proxy service judges whether the current link meets a preset link normal condition or not according to the current transmission rate; when it is judged that the current link does not meet the normal link condition, the proxy service re-executes the operation of selecting the optimal link from all the standby links between the client and the NAS device; and when the current link is judged to meet the normal link condition, the proxy service keeps the connection state of the current link. Therefore, the link abnormity can be accurately judged, so that the connection stability of the NAS equipment is improved.

The utility model discloses a desktop computer mainboard on-board BGA central processing unit DDR6 memory structure, which belongs to the technical field of desktop computer mainboard structures, and comprises a mainboard, an on-board BGA central processing unit is arranged in the middle of the upper end of the upper surface of the mainboard, a heat conduction plate is arranged above the on-board BGA central processing unit, and the heat conduction plate is connected with the mainboard. The mainboard comprises an onboard BGA central processing unit, a DDR6 memory slot is formed in one side of the onboard BGA central processing unit, a 24PIN power supply interface is formed in one side of the DDR6 memory slot, a plurality of vertically-arranged SATA interfaces are formed below the 24PIN power supply interface, and a startup jumper needle port and a Type-C needle port are sequentially formed in the lower edge position of the upper surface of the mainboard from right to left. The CPU of the mainboard is integrally packaged by adopting the BGA, and meanwhile, a special DDR6 slot is designed to be matched with a relevant IO interface and a mainboard needle port, so that the mainboard has better transmission rate, higher stability, lower power consumption and larger capacity, can meet the requirement of a current computer for large throughput data volume of AI large model operation, and is externally connected with a plurality of electronic devices.

This invention discloses a method and system for low-Earth orbit (LEO) satellite communication based on dual-frequency dual-circular polarization beam scanning, relating to the field of LEO satellite communication technology. The method includes the following steps: a dual-frequency dual-circular polarization antenna unit performs identity matching verification based on satellite beacon signals transmitted by the LEO satellite to establish a communication connection with it; once the communication connection is established, the antenna unit adjusts and switches to the corresponding communication frequency based on satellite communication frequency band parameters, and simultaneously receives downlink data and transmits uplink data using dual-circular polarization mode; during data transmission, a feed phase control signal is generated based on satellite orbit parameters to adjust the beam pointing direction in real time; when the LEO satellite is about to pass over, the satellite beacon signal of the next LEO satellite is acquired to establish a communication connection and transmit data, thereby achieving seamless communication switching; through dynamic scanning and seamless switching of the dual-frequency dual-circular polarization beam, communication stability and data transmission efficiency are effectively improved.

The application provides a data transmission method, device, equipment and storage medium. The method comprises: creating M PDU sessions; N PDU sessions are used for transmitting target service data, and Q PDU sessions are used for transmitting test data; M is an integer greater than or equal to 1, N and Q are integers greater than or equal to 1 and less than or equal to M, and the sum of N and Q is equal to M; if an air interface between a terminal device and a network device is not in a congestion state, obtaining a target rate detected by the terminal device; the target rate is a data transmission rate of the M PDU sessions at a MAC layer obtained by the terminal device transmitting the test data in the Q PDU sessions through a preset peak rate; for the M PDU sessions, if a data transmission rate at an IP layer is less than a first data transmission rate, increasing a data transmission rate of the N PDU sessions on the target service data; the first data transmission rate is equal to a product of the MAC layer data transmission rate and a first rate factor.

The application provides a compound eye type visible light multiple access communication method, and belongs to the technical field of visible light communication. The communication method fully utilizes the characteristics of a complex channel environment, designs a light receiving end composed of multiple PDs in a VLC system into a compound eye type multiple PD receiving layout mode, and provides a corresponding communication method according to the designed compound eye type PD receiving layout mode. Compared with using a single PD to realize data transmission of the VLC system, the application can fully utilize the characteristics of the complex channel environment, design the light receiving end composed of multiple PDs into the compound eye type receiving layout mode, not only can sufficiently utilize the visible light signals in the complex space scene, improve the received light signal strength, but also can multiplex the visible light communication channel, realize data communication transmission of multiple LEDs, and further improve the data transmission rate of the VLC system.

The application discloses a multi-objective optimization method for trade-off energy efficiency and spectrum efficiency of space-air-ground-thing Internet of Things, and belongs to the field of communication resource allocation.The application realizes the method as follows: constructing a space-air-ground-thing Internet of Things model, constructing a multi-objective optimization problem of maximizing system energy efficiency and system spectrum efficiency according to the space-air-ground-thing Internet of Things model; introducing an energy efficiency and spectrum efficiency trade-off coefficient, and converting the multi-objective optimization problem of trade-off energy efficiency and spectrum efficiency in the space-air-ground-thing Internet of Things network into a single-objective optimization problem by using a constraint method; dividing the complex single-objective optimization problem into three sub-problems of sub-channel selection, unmanned aerial vehicle and Internet of Things device power control and unmanned aerial vehicle position deployment, and further improving optimization efficiency; and adopting a block coordinate descent method to iteratively solve the three sub-problems in turn to obtain a solution of the multi-objective optimization problem of trade-off energy efficiency and spectrum efficiency, until a multi-objective optimization result is obtained.The application is suitable for the case that there are obstacles between unmanned aerial vehicles and Internet of Things devices, and can improve the energy efficiency and spectrum efficiency of the system.

This application provides a data transmission method based on a cache structure, belonging to the field of computer communication technology. Specifically, a sending buffer is set in the sending storage area of ​​the file to be sent, and a receiving buffer is set in the receiving storage area. The method checks whether the data to be sent has been updated; if updated, it is sent by writing the file to be sent into the sending buffer or sending it directly to the receiving storage area. A handshake mechanism is used to establish a link between the sending storage area and the receiving storage area of ​​the file to be sent, and the number of data packets allowed to be sent at one time is calculated. The file to be sent is sent to the receiving buffer, and the receiving storage area receives the file after confirming that the flag of the file to be sent in the receiving buffer matches. This processing scheme improves sending efficiency while maximizing the utilization of memory space resources.

This application provides a deployment method, a data access method, and a board for a data access module, applicable to the field of data processing technology. The deployment method includes: configuring the number of virtual modules via configuration instructions from a first driver; and configuring the namespace of the specified virtual modules by calling the configuration instructions from the first driver, wherein the namespace is used to map the storage space of an external device. The data access method includes: obtaining a first data request instruction sent by a first terminal; sending a second data request instruction to a second virtual module through a first virtual module based on the first data request instruction; and obtaining the stored data of a second terminal through the second virtual module based on the second data request instruction. This deployment method, by configuring the number of virtual modules, maps the storage space of an external device to the namespace of the virtual modules; and this data access method enables fast access to data on external devices; it has strong practicality and ease of use.

The embodiment of the invention provides a semiconductor device and a preparation method thereof, a memory unit, a read-write method and a memory. The semiconductor device comprises a substrate and a laminated structure arranged on the substrate, wherein the laminated structure comprises first semiconductor layers and insulating layers which are alternately arranged; the first hole structures and the second hole structures penetrate through the laminated structure and are arranged in the first direction, and the first direction is parallel to the substrate; a memory cell including a first sub-structure disposed in the first pore structure and a second sub-structure disposed in the second pore structure; the first substructure comprises a first gate structure of the read transistor and a capacitor, and the first substructure is located in the first semiconductor layer; the second substructure comprises a first transistor and a second transistor, and the second substructure is located in the first semiconductor layer.

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle anti-interference antenna structure supporting edge AI real-time processing, which comprises an unmanned aerial vehicle body, a rotor spar, an orthogonal dual-polarization patch antenna, a double-cone spiral omnidirectional antenna and a communication system area covering multilayer shielding structure, and is combined with MIMO 8 * 8 beam forming and dynamic frequency adjusting technologies. According to the antenna, electromagnetic interference is effectively suppressed, the orthogonal dual-polarization patch antenna works at 5.8 GHz + / -200MHz, the unit spacing is greater than or equal to 0.75 lambda, the biconical spiral omnidirectional antenna supports 2.4-6GHz broadband matching, and the AI chip optimizes signal processing in real time. The utility model solves the problems of strong high-frequency interference and low transmission rate in the prior art, and is suitable for high-reliability communication in a complex electromagnetic environment.

The invention provides an unmanned aerial vehicle cluster networking communication system and method, and belongs to the technical field of unmanned aerial vehicle communication. Comprising at least one main control unmanned aerial vehicle, and the main control unmanned aerial vehicle is provided with a first communication module, a first positioning module, a first data processing module and a dynamic network management module. Each slave unmanned aerial vehicle is provided with a second communication module, a second positioning module and a second data processing module; the relay unmanned aerial vehicle is provided with a third communication module and a signal enhancement module; and the ground control center is connected with the main control unmanned aerial vehicle through wireless communication. Network topology can be dynamically adjusted according to position changes, communication quality parameters and task requirements of the unmanned aerial vehicles, multi-band communication switching is supported, data security is guaranteed by adopting dynamic key encryption, a perfect fault processing mechanism is provided, and high efficiency, stability and security of unmanned aerial vehicle cluster communication are ensured.

The present application relates to the technical field of self-driven measurement-while-drilling tool, and particularly relates to a self-driven along-drill-string measurement system based on a friction nanogenerator. The technical scheme comprises a friction nanogenerator, an energy management unit, a low-power wireless communication relay node and a ground control terminal. The friction nanogenerator is used to collect the vibration energy of the drill pipe and convert it into electric energy. The friction nanogenerator adopts a sliding independent layer structure and comprises a rotor and a stator. The present application realizes distributed self-driving by deploying the friction nanogenerator at each communication node and utilizing the downhole vibration energy. The energy converted by the friction nanogenerator at the drill bit is enough to emit stronger communication signals, ensuring sufficient energy supply, rapid response of communication content and efficiency, developing information transmission technology with continuous power supply and low-power operation in the process of measurement-while-drilling, and realizing bidirectional communication of information, which has remarkable engineering value for difficult-to-exploit oil and gas resources.

This utility model discloses a connector with OTG functionality. It comprises a first interface unit, a communication authentication unit, a boost unit, a second interface unit, a data transmission control unit, and a third interface unit. The first interface unit connects to a mobile terminal. The communication authentication unit authenticates the mobile terminal's communication. The boost unit receives the voltage signal from the mobile terminal processed by the communication authentication unit and supplies power to the OTG device and data transmission control unit connected to the third interface unit. The mobile terminal transmits data with the OTG device through the data transmission control unit. When the voltage signal cannot supply power to the OTG device and / or the data transmission control unit, the second interface unit connects to a charging input terminal to power the mobile terminal and the OTG device, enabling simultaneous charging and data transmission between the mobile terminal and the OTG device, thus improving the data transmission rate. When the voltage is insufficient, the charging input terminal supplies power to the mobile terminal, the data transmission control unit, and the OTG device, ensuring data transmission stability.

The application relates to a port expansion circuit and device, and belongs to the technical field of electronic device connection. The port expansion circuit comprises a main power interface module, a first relay module and a slave power interface module, the main power interface module is connected with the first relay module and an external power device, the slave power interface module is connected with the first relay module and an expansion device, and the first relay module performs filtering, shaping and amplification processing on transmitted data signals. The port expansion circuit further comprises a main data interface module, a second relay module and a slave data interface module, which are used for realizing transmission and processing of data signals. The first relay module comprises a biasing submodule and an operational amplification submodule, and the second relay module comprises an isolation transformer, a common-mode inductor and a protocol conversion chip. Through the separation design of power transmission and data transmission, the application realizes effective expansion of the port, improves signal transmission quality and stability, supports multiple interface types, and meets the connection requirements of different devices.

The invention discloses a method for transforming a connector and a high-speed connector formed by the same. The method comprises the following steps: respectively coating dielectric materials on partial line segments of signal terminals in a socket end and a matched plug end of the connector, and selectively combining with two modifications proposed on a circuit board in the plug end of the connector, so as to increase the transmission bandwidth of the connector and improve the data transmission rate of the connector.

The utility model relates to the technical field of docking stations, in particular to a docking station core board circuit, which comprises a printed circuit board (PCB), the PCB is provided with a master control circuit, a first sub-control circuit, a second sub-control circuit and a universal serial bus (USB) hub circuit compatible with a universal serial bus (USB) 2.0 standard, and the master control circuit comprises a JHL8440 type control chip supporting a thunder 4 protocol. The control chip supports the Thunderbolt 4 standard, and has the highest data transmission rate of 40Gbps, the double 4K display output capability and the efficient power supply management function. The main control circuit is electrically connected with the first sub-control circuit, the second sub-control circuit and the USB hub circuit. The overall circuit design meets the technical specification of the thunder 4, high-speed data transmission, multi-device expansion and stable compatibility can be achieved, and the urgent requirement of a user for high performance and multiple functions and meeting the standard docking station of the thunder 4 is met.

The embodiment of the application discloses a simulation system, and belongs to the simulation field. Wherein, the simulation system comprises a hardware control end, comprising a hardware controller; a simulation model end, comprising a simulation model; a communication end, in communication connection with the hardware control end and the simulation model end, for transmitting communication data between the hardware control end and the simulation model end, so as to simulate the simulation model by using the hardware controller; the communication end comprises communication hardware, and the communication hardware is used for processing communication protocols to realize the transmission of the communication data. The embodiment of the application has the technical effects of fast response speed and small delay, and improves the data transmission rate in the simulation process.

This application provides a method and apparatus for modeling and fading analysis of a geometric random channel model based on environmental awareness. The method includes the following steps: acquiring the location information of obstacles in the environment and constructing an environmental awareness map using an occupancy grid algorithm; establishing a random channel model based on the environmental awareness map and the signal propagation path; wherein the signal propagation path includes a line-of-sight path and a single-hop path. In this application embodiment, by establishing a geometric random channel model based on environmental awareness, the accuracy of channel modeling is significantly improved. Compared with geometric random channel models in related technologies, it can obtain a channel impulse response closer to the real scene and more realistically reflect the distribution of obstacles and signal propagation characteristics in the environment.