668 results about "Transmission bandwidth" patented technology

According to embodiments, a UE receives, from a network device, a configuration of a sounding reference signals (SRS) resource with 8 antenna ports, a transmission comb configuration for the SRS resource, and a cyclic shift (CS) configuration for the SRS resource. The transmission comb configuration indicates a comb value K. K is one of 2, 4, or 8. The transmission comb configuration further indicates a configured comb offset (k). k is an integer between 0 and K−1. The CS configuration indicates CS positions. The UE maps each port of the 8 antenna ports to corresponding resource elements (REs) in the frequency domain and a corresponding CS. The corresponding REs are a subset of a plurality of REs and on every K-th RE with an offset based on the configured comb offset (k) within an SRS transmission bandwidth. The UE transmits SRSs using the 8 antenna ports based on the mapping.

The invention discloses a private network data security detection method based on big data, and belongs to the field of security detection, and the method comprises the steps: obtaining a real-time data packet from private network traffic, encoding the data packet through a forward error correction code technology, generating redundancy check information, and obtaining an encoded data packet; if a bit error is detected in the transmission process of the coded data packet, requesting a sending end to retransmit a damaged data packet through an automatic retransmission request mechanism to obtain a retransmitted data packet; adjusting the redundancy of a forward error correction code and a trigger threshold of an automatic retransmission request according to the adaptive error correction parameter, generating an optimized error correction scheme, and obtaining a repaired data packet; and aiming at the alarm processing instruction, automatically adjusting a network flow control strategy, limiting the transmission bandwidth of an abnormal destination, updating the sensitive data fingerprint database, and obtaining optimized protection configuration.

The invention specifically relates to the technical field of edge computing, and discloses a multi-platform concurrent transmission edge computing data acquisition method, which comprises the following steps: S1, concurrent access of multi-platform equipment: establishing a mapping relationship between equipment identity and a communication link; s2, data concurrent collection and preprocessing: obtaining a preprocessed data stream; s3, concurrent transmission priority scheduling: allocating a transmission bandwidth for each data stream; s4, edge node parallel computing: distributing the subtasks to a plurality of computing nodes; s5, cloud collaboration and global optimization: generating a global optimization strategy; s6, carrying out full-link monitoring and dynamic regulation and control; concurrent access of heterogeneous equipment is realized by generating data streams in a uniform format, multi-platform compatibility is effectively enhanced, bandwidth is dynamically allocated to the data streams according to priority weight indexes by calculating the priority weight indexes of the data streams, data transmission efficiency is improved, and the data transmission efficiency is improved by allocating sub-tasks to a plurality of computing nodes. And the resource utilization rate of the edge computing gateway is improved.

The invention provides a subway train traction energy efficiency optimization data transmission control method and system. The method comprises the following steps: acquiring numerical values of vibration parameters when a traction motor of a subway train runs, and segmenting the numerical values of the vibration parameters according to preset time granularity; calculating a comprehensive weight index of each time sequence unit based on the vibration amplitude, the frequency distribution and the phase angle parameter, and generating a dynamic code rate hierarchical allocation strategy in combination with the real-time state of the network transmission bandwidth and a control instruction reservation mechanism; and establishing a multi-dimensional parameter association model based on the numerical value of the vibration parameter, a dynamic code rate hierarchical allocation strategy, the real-time power state of each power electronic device, and the torque output instruction and energy recovery threshold feedback parameter, and dynamically adjusting a data transmission rule through the multi-dimensional parameter association model. According to the technical scheme provided by the invention, the accuracy of subway train traction energy efficiency optimization data transmission control is improved.

The present invention discloses a method and device for transmitting network time synchronization messages applicable to any channel environment, including: classifying the data bits of the time synchronization messages to be transmitted to obtain public information bits and secret information bits, and performing Polar coding on the data of the time synchronization messages to obtain a first coding sequence; dividing all data subcarriers within the transmission bandwidth into sub-blocks according to the number of legitimate receivers, and dividing each sub-block to obtain clusters, performing IM modulation on each cluster to determine the active subcarrier indices of each cluster; interleaving the symbol vector obtained by modulating the first coding sequence based on the total frequency-domain channel matrix characteristics of a preset channel simulation system; modulating the interleaved symbol vector onto the active subcarriers selected for each sub-block to complete OFDM-IM modulation, and sending the modulated OFDM-IM signal to each legitimate receiver. The present invention solves the problems of poor security and limited application scenarios in the transmission of network time synchronization messages.

Disclosed are a method and an apparatus for transmission or reception of an STF for a new numerology in a wireless LAN system. A method performed by a first station (STA) in a wireless LAN system according to an embodiment of the present disclosure may comprise the steps of: generating a physical layer protocol data unit (PPDU) including a non-legacy short training field (STF); and transmitting the generated PPDU to one or more second STAs. In the non-legacy STF, for a PPDU type supporting a new numerology, a specific STF sequence may be applied to each transmission bandwidth of the PPDU type.

The invention discloses a power consumption optimization method and device of a solid state disk controller, equipment and a medium, and relates to the field of computers, and the method comprises the following steps: determining an uplink bandwidth demand and a downlink bandwidth demand of a nonvolatile memory fast solid state disk controller according to a response rate of a completion queue and a target attribute of each input / output request; determining a unidirectional maximum transmission bandwidth of the communication bus according to a link rate and a link width of the communication bus, and determining a current uplink bandwidth utilization rate and a current downlink bandwidth utilization rate of the communication bus according to the unidirectional maximum transmission bandwidth, the uplink bandwidth demand and the downlink bandwidth demand; and adjusting the link rate of the communication bus according to the current uplink bandwidth utilization rate and the current downlink bandwidth utilization rate. According to the method and the device, the power consumption optimization of the nonvolatile memory fast solid state disk controller is realized.

The invention relates to an intelligent water affair remote monitoring and control system based on the Internet of Things, in particular to the field of intelligent water affair remote monitoring and control, and the system comprises the steps: firstly, pre-training a long and short-term memory network model through a cloud, and generating a lightweight edge prediction model to reduce calculation and transmission loads; the data transmission module effectively reduces the occupation of transmission bandwidth based on a dynamic quantization threshold value of a residual error and a differential coding technology, meanwhile, the high precision of the data is kept, the verification feedback module monitors the accuracy of the transmission data in real time through confidence coefficient detection, and triggers model re-calibration when the confidence coefficient is reduced, so that the long-term stability of the system is ensured, and the reliability of the system is improved. The sampling optimization module dynamically adjusts the sampling frequency according to the confidence coefficient and the residual fluctuation characteristics, balance is achieved between bandwidth occupation and reconstruction precision by using the Lyapunov optimization theory, the real-time performance and accuracy of water affair monitoring are improved, and meanwhile bandwidth consumption and energy consumption are effectively reduced.

The embodiment of the invention discloses a calculation method of a self-attention operator, operator calculation equipment, a system and a chip, which are used for unloading the self-attention operator from reasoning equipment to the operator calculation equipment, reducing the data transmission quantity, reducing the requirement on the SSD transmission bandwidth and improving the reasoning real-time performance at the same time. The self-attention operator computing system comprises: a reasoning device for calculating a first increment KVcache of a first decoder in a plurality of decoders according to a first output element token, and sending the first increment KVcache to an operator computing device; the operator calculation equipment is used for executing calculation of a first self-attention operator of the first decoder according to the total amount KVcache and the first increment KVcache of the first decoder to obtain a first calculation result and sending the first calculation result to the reasoning equipment, and the reasoning equipment is used for receiving the first calculation result and sending the first calculation result to the second decoder according to the total amount KVcache of the first decoder and the first increment KVcache of the first decoder. The total amount KVcache of the first decoder is stored in the operator computing equipment in advance.

The invention discloses an electric power data acquisition method and equipment based on a logarithmic amplifier and a medium, and relates to the technical field of electric power monitoring signal processing, and the method comprises the steps: collecting an original analog current signal on an electric power circuit and an analog temperature signal of an environment where the logarithmic amplifier is located, and generating a mixed observation vector; based on the mixed observation vector, calculating an estimated value of a temperature characteristic correction parameter in real time through a pre-stored temperature-parameter mapping relation, and performing logarithmic compression on the original current digital signal sequence by using the estimated value of the temperature characteristic correction parameter to obtain a compressed voltage signal subjected to temperature compensation; and performing high-speed analog-to-digital conversion on the compressed voltage signal subjected to temperature compensation to obtain a discrete digital signal sequence, and storing the discrete digital signal sequence into a priority cache region. According to the invention, the data volume is effectively compressed by using the correlation between the signals, and the transmission bandwidth and the storage demand are reduced.

Disclosed are a method and apparatus for transmitting or receiving a short training field (STF) for new numerology in a wireless LAN system. The method performed by a first station (STA) in a wireless LAN system, according to an embodiment of the present disclosure, may comprise the steps of: generating a physical layer protocol data unit (PPDU) including a non-legacy STF; and transmitting the generated PPDU to one or more second STAs. A specific STF sequence may be applied, with respect to a PPDU type supporting new numerology, to a non-legacy STF for each transmission bandwidth of the corresponding PPDU type.

Disclosed are a method and device for transmitting or receiving a short training field (STF) for new numerology in a wireless LAN system. A method performed by a first station (STA) in a wireless LAN system, according to one embodiment of the present disclosure, may comprise the steps of: generating a physical layer protocol data unit (PPDU) including a non-legacy short training field (STF) field; and transmitting the generated PPDU to one or more second STAs. For a PPDU type supporting new numerology, a specific STF sequence may be applied, to the non-legacy STF field, for each transmission bandwidth of the PPDU type.

Disclosed are a method and device for transmitting or receiving an STF for a new numerology in a wireless LAN system. A method performed by a first station (STA) in a wireless LAN system according to an embodiment disclosed herein may comprise the steps of: generating a physical layer protocol data unit (PPDU) including a non-legacy short training field (STF); and transmitting the generated PPDU to one or more second STAs. In the non-legacy STF field, a specific STF sequence may be applied for each transmission bandwidth of a PPDU type supporting the new numerology.

The invention discloses a multifunctional broadband metamaterial structure with a polarization independent characteristic and a control method. The structure has a switchable tri-state function and a complete polarization operation capability irrelevant to polarization. By introducing the guide circuit design, three different electromagnetic energy regulation and control modes of second-order filtering, broadband absorption and multi-reflection shielding are efficiently integrated in the same structure, the real broadband performance in the band is realized, and meanwhile, the higher reflection efficiency outside the band is kept. Different from a traditional method which depends on a broadband lossless reflecting layer to expand the transmission bandwidth of an absorption structure, the three arrays are considered as an integral operating system, support three-state switching operation and have real broadband and efficient behaviors.

The embodiment of the invention provides a congestion control method and device, an RDMA network card and electronic equipment, and is applied to the RDMA network card of a sending end, and the method comprises the steps: responding to the received WQE, and based on the current sending rate, sending a data packet to a receiving end through an RDMA communication link; transmission performance characterization information of the RDMA communication link in a time window is determined, the transmission performance characterization information comprises the minimum round-trip time and the maximum transmission bandwidth, and the time window is set based on the determined last minimum round-trip time; updating the current sending rate based on the transmission performance characterization information; and sending the data packet to the receiving end through the RDMA communication link based on the updated current sending rate. By applying the scheme provided by the embodiment of the invention, the packet loss rate during data transmission between equipment based on the RDMA technology can be reduced.

The invention relates to the technical field of video acquisition coding and transmission, and provides a WebRTC-based method for reducing transmission bandwidth and improving transmission stability, which comprises the following steps: S1, a video acquisition module acquires a video frame from a camera and sends the video frame to a video coding module; s2, performing AI scene detection on the video frame to obtain a picture scene of the video frame, and performing region-of-interest ROI detection on the video frame to obtain a region-of-interest ROI range of the video frame; s3, optimizing the original funnel algorithm, setting different code rates for different video frames according to different video frame scenes, and setting different code rates for different areas of the video frames according to different ROI (Region of Interest) ranges of the video frames; s4, encoding the video frame, and sending the encoded video frame to a receiving end; s5, the receiving end decodes the received compressed video data into original video frames by using a video decoder; and S6, transmitting the decoded video frame to a rendering module for video rendering and display. The transmission bandwidth is reduced, and the transmission stability is improved.

Provided are a communication method and a communication device, the method comprising: determining a transmission waveform of a signal, the transmission waveform being related to a threshold of a first parameter, the first parameter comprising: a modulation order and a roll-off factor, the transmission waveform is an orthogonal frequency division multiplexing QAM-DFTS-OFDM waveform of discrete Fourier transform spread spectrum of orthogonal amplitude modulation or an orthogonal frequency division multiplexing OQAM-DFTS-OFDM waveform of discrete Fourier transform spread spectrum of offset orthogonal amplitude modulation, and the roll-off factor is determined based on the transmission bandwidth and the number of symbols carried by the transmission waveform. And transmitting or acquiring the signal. In the method provided by the invention, the network equipment or the terminal equipment can determine the transmission waveform of the signal according to the set threshold value of the modulation order and the threshold value of the roll-off factor, so that the output power supporting higher power amplifiers can be obtained, and a larger signal coverage range can be obtained.

A service flow adjustment method and a communication apparatus are provided. Slot adjustment information is carried in a client signal flow sent between nodes, so that times at which all nodes on a network switch slot configuration can be unified, to avoid service damage in a process of adjusting a network transmission bandwidth. The method includes: A first node receives a first client signal flow from a second node by using N slots of a first bundling group; and after first duration starting from a time at which the first node detects slot adjustment information, the first node receives the first client signal flow from the second node by using M slots of the first bundling group.

The invention provides a solid state disk energy consumption optimization method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out the throttling operation of the transmission bandwidth of a PCIe link if the first data transmission rate of the PCIe link does not meet the transmission rate requirement; performing layering operation on the cache space of the solid state disk based on the link transmission state of the throttled PCIe link to obtain a layered cache structure; determining a migratable task in each cache layer based on a data storage condition of each cache layer in the layered cache structure and a task execution condition of the solid state disk, and migrating the migratable task of each cache layer to a target cache region to obtain a cache layout after task migration; and if the second data transmission rate of the PCIe link after throttling meets the transmission rate requirement, adjusting the working mode of each component in the solid state disk based on the second data transmission rate and the cache layout. The energy consumption of the solid state disk is optimized, the read-write performance is improved, and the service life is prolonged.

The invention relates to a distribution network fault first-aid repair full-process visual tracking method and system, and the method comprises the following steps: building a multi-source data collection system, and obtaining the biological characteristic data, environmental parameters, vehicle positioning information and material RFID tag data of first-aid repair personnel in real time through intelligent terminal equipment; constructing a three-dimensional visual digital twinborn platform, and integrating a GIS (geographic information system), a BIM (building information modeling) power grid model and a real-time dynamic data layer; edge computing nodes are deployed for data preprocessing, and a time sequence compression algorithm is adopted to reduce the transmission bandwidth requirement; establishing a dynamic resource optimization model, and performing repair path planning and resource allocation based on a Markov decision process; the intelligent perception of the security situation is realized, the personnel behavior video stream is analyzed through the neural network model, and the illegal operation is pre-warned in real time.

The invention relates to the technical field of earthquake and acoustic exploration, and discloses a signal acquisition and transmission method, device, equipment and medium based on a main control unit, and the method comprises the steps: generating a sampling clock signal and a time counting signal, driving an analog-to-digital conversion unit to obtain a digital acquisition signal, and reading equipment state parameters; after the timestamp is added, the digital signal is stored in the first cache unit, the state data after the timestamp is added is stored in the second cache unit, the data signal cache unit is written into a first FLASH partition after being full, and the state data cache unit is written into a second FLASH partition after being full. And after data is read from the FLASH, differential signals are output through the multi-wire parallel interface, the logic processing unit and the serialization unit. According to the invention, power consumption is reduced through unified power management and optimization of clock control and a dormancy mechanism, and transmission bandwidth is improved in combination with high-speed differential output, so that both low power consumption and high efficiency are realized.

The invention provides a region-of-interest protection-oriented power image compression method and system and a code stream transmission method, and relates to the technical field of power image compression. According to the method, the region of interest and the background region are distinguished, the background region is smoothed through bilinear downsampling, spatial redundant information of the background region of the power image is removed, and bit allocation of the background region is effectively reduced, so that lower compressed code streams are consumed under the condition that the fidelity of the region of interest and the same background quality are achieved. Meanwhile, through a content weighted attention module, adaptive bit distribution of different spatial positions is realized, and bits can be reasonably distributed according to the importance difference of image contents, so that the coding quality of the region of interest and the overall compression effect are improved. According to the code stream transmission method provided by the invention, the code stream required by each path of image is forwarded in a staggered and ordered manner, so that transmission bandwidth resources are better utilized.

The invention discloses a total space vector vortex generator, which comprises a plurality of tetramer super units which have the same structure and are arranged in a periodic array at equal intervals, and each tetramer super unit comprises two first chiral metamaterial unit assemblies and two second chiral metamaterial unit assemblies which are respectively arranged along diagonal lines; the first chiral metamaterial unit assembly comprises a first patch antenna, a first dielectric layer, a metal backboard, a bonding medium, a second patch antenna and a second dielectric layer which are sequentially arranged from top to bottom; the structure of the second chiral metamaterial unit assembly is the same as that of the first chiral metamaterial unit assembly, and the in-plane rotation angle is different from that of the first chiral metamaterial unit assembly; by rotating the first patch antenna and the second patch antenna of the two chiral super units around the central point, phase distribution is independently designed in four different circular polarization transmission channels, and meanwhile, vortex beam topological charges generated in corresponding channels in transmission and reflection modes are controlled, so that the transmission bandwidth can be expanded, and the transmission efficiency is improved. And the reflection and transmission efficiency is improved.

The invention relates to the technical field of distributed control, and particularly discloses a distributed LED screen cooperative control system based on a wireless synchronization protocol, and the system comprises a division module which obtains the transmission bandwidth and the mean value of each LED display screen, records the LED display screen with the maximum mean value as a main screen, and records the rest as sub-screens; the detection module is used for sending a synchronizing signal, recording the moment when the synchronizing signal is received, sending a timestamp to the sub-screen, converting the direction and resending; and the adjusting module is used for generating limit value conditions, calculating network delay and clock skew, adjusting clocks of the sub-screens based on the clock skew, screening out fluctuating sub-screens, calculating a delay predicted value based on the network delay, sending frame data in advance, obtaining a picture difference between the main screen and the fluctuating sub-screens, and adjusting the delay predicted value. Through the clock signal synchronization and advanced transmission method, the problem of high delay in high-dynamic display content is solved, and the delay is reduced.

A bandwidth adjustment method is disclosed. The source node receives an adjustment command issued by a network management server, all nodes on the path are triggered to adjust a forward transmission bandwidth parameter of the Optical Service Unit (OSU) respectively, so the network management server does not need to issue adjustment commands to all the nodes on the path, thereby simplifying the process of the bandwidth adjustment. Further, the source node enters an adjustment mode corresponding to the OSU, and sequentially sends the first message to the downstream node until the sink node, so that each node on the path enters the adjustment mode corresponding to OSU, and then exits the adjustment mode corresponding to the OSU after performing corresponding adjustment on the forward transmission bandwidth parameter of the OSU, thereby realizing a synchronous adjustment of all nodes on the path based on the adjustment mode corresponding to the OSU.

The invention relates to the technical field of electrical variable measurement, in particular to a self-adaptive power quality monitoring method for a power cabinet, which comprises the following steps of: starting a low-frequency acquisition unit arranged at a monitoring node of the power cabinet, and acquiring a low-frequency coarse scanning voltage signal of the power cabinet in a current monitoring period at a preset low-frequency sampling rate; according to the method, compressed observation vectors are transmitted, sparse basis inversion calculation is executed by using an orthogonal matching pursuit algorithm, high-precision power quality time domain waveform data are reconstructed, rich high-frequency transient details are restored under the condition of low-data-volume transmission, distortion feature analysis is carried out based on reconstructed waveforms, disturbance types are identified, and a monitoring analysis report is generated and uploaded. The real-time dynamic adjustment of the sampling scale and the matrix structure along with the signal fluctuation state is realized, the optimal balance of the data compression ratio and the signal reconstruction quality is achieved, the contradiction between the storage and transmission bandwidth limitation of massive high-frequency data in a complex power grid environment is solved, and the sensitivity for transient abnormality is improved.

An audio data transmission method and apparatus for a wireless earphone, and a storage medium and a terminal are provided. A play mode adopted by the wireless earphone includes a first play mode and a second play mode, and the method includes: determining whether the first play mode currently adopted by the wireless earphone satisfies a transmission bandwidth required by to-be-played audio data at least based on parameter information of the to-be-played audio data; and based on the first play mode not satisfying the transmission bandwidth required by the to-be-played audio data, transmitting the to-be-played audio data through a connection channel corresponding to the second play mode.

The invention discloses a multi-modal code stream transmission bandwidth dynamic allocation optimization method, which comprises the steps of firstly performing feature extraction on to-be-transmitted multi-modal data including images and voiceprints, calculating the number of features, further considering the influence of feature similarity among the multi-modal data on transmission marginal benefits, and optimizing the transmission bandwidth dynamic allocation of the multi-modal code stream. The suitability of an analysis result and a real environment is improved; a time sequence neural network is utilized to calculate a code stream demand predicted value, a bandwidth allocation optimization model with maximization of bandwidth transmission efficiency as an optimization target is constructed according to image feature quantities and voiceprint feature quantities, the optimization model is further modeled as a decision process, a deep actor-commentator algorithm is utilized to solve the decision process, and the decision process is optimized. A playback experience pool in a decision process is constructed by utilizing prediction deviation of a time sequence neural network, so that the algorithm learns an optimal strategy of each parameter under different prediction precisions, the adaptability of the bandwidth allocation method to different monitoring scenes is enhanced, and the problem of sparse training samples is solved.

The invention discloses a method for improving data transmission bandwidth through an FPGA. The method comprises the steps that a data packaging module of a detector main control board sends data to be transmitted to a multi-channel GTP sending end in parallel; the data acquisition card receives the data of the corresponding channels through the multi-channel GTP receiving end and recovers Data and KCOD of each channel; an FIFO read-write control module of the data acquisition card writes data recovered by multiple channels into asynchronous FIFOs corresponding to the channels through write logic, and data buffering is carried out; the FIFO read-write control module simultaneously reads cache data of a plurality of asynchronous FIFOs through read control logic to realize cross-clock domain synchronization of multi-channel data; performing CRC (cyclic redundancy check) and processing on the read multi-channel data to obtain synchronous effective transmission data; and a single-channel GTP is upgraded to a dual-channel GTP or a multi-channel GTP, so that the data transmission bandwidth is improved, and normal operation of the FPGA chip is ensured.

Embodiments of the present application provide a method for communication, a device, a storage medium, and a program product. In the method, a data compression apparatus sends a first data matrix. Then, the data compression apparatus sends a projection result of a second data matrix and a projection residual. The projection result is determined on the basis of a determined projection matrix of the second data matrix relative to the first data matrix, and the projection residual is determined on the basis of the second data matrix and the projection result. In this way, the correlation between the first data matrix and the second data matrix can be fully utilized, thereby improving compression efficiency, and saving the transmission bandwidth or storage resources.