748 results about "Transmission time" patented technology

The invention discloses a method for aggregating ocean buoy data, which comprises the following steps of: establishing a space-time correlation model according to the spatial distribution density of buoy clusters and the dynamic characteristics of an ocean environment, and adaptively dividing buoy groups with a data compression cooperative relationship; performing a data-related compression operation within the buoy group; constructing a transmission priority dynamic sorting engine, and calculating a dynamic weight coefficient; performing hierarchical packaging processing on the differential coding data, distributing enhanced forward error correction coding resources for high-priority data, and reserving redundant transmission time slots; the method comprises the following steps: receiving a hierarchical data packet through a low-orbit satellite and executing on-satellite preprocessing, reconstructing an original data stream by using a distributed decoder, and meanwhile, fusing multi-dimensional space-time related data to generate an aggregated data product; and finally, the aggregated data product is transmitted to a ground data center through a satellite downlink. According to the invention, uplink data volume is reduced, disaster monitoring timeliness is improved, ground station processing load is reduced, and system environment adaptability is enhanced.

The invention discloses an audio and video data transmission anti-interference method and system based on coding error correction, relates to the technical field of audio and video data transmission, and is used for solving the problem that centralized error burst occurs in audio and video data transmission due to periodic strong electromagnetic interference generated by high-power inductive load equipment in an industrial production environment. The method comprises the following steps: acquiring predicted interference occurrence time, duration and reference intensity range of high-power inductive load equipment in an industrial production environment; detecting the channel quality of a transmission link to obtain the actual starting time and ending time of interference, the influence on a specific frequency range and the specific mode and length of error burst; predicting interference occurrence time according to an interference rule; generating a transmission strategy adjustment instruction according to the priorities of the multiple paths of audio and video streams; and according to the transmission strategy adjustment instruction, carrying out coding error correction or transmission time sequence adjustment on the multiple paths of audio and video streams before the interference occurrence time.

The invention discloses a log processing method and device, a medium and a product, relates to the technical field of distributed system log management, and can be applied to the field of financial science and technology. The method comprises the following steps: sending a receiving node query request to a policy service, so that the policy service determines a target receiving node according to the receiving node query request; obtaining a target receiving node fed back by the policy service; based on the local system portrait model, processing the current system index data to obtain a business trough period window; determining an estimated transmission time length and a recommended transmission time period according to the data volume and the current available bandwidth of the to-be-transmitted log file and the service trough period window; sending a transmission decision request to a policy service; obtaining a target transmission time period and a fragment sequence fed back by the policy service; and transmitting a fragment sequence to the server through the target receiving node based on the target transmission time period, the fragment sequence comprising at least one log fragment. Through the technical scheme, the log processing efficiency can be improved.

The invention discloses a multi-beam spatial frequency conflict resolution method which is suitable for a large-scale low-orbit satellite constellation system. According to the method, high-orbit satellites are used as centralized control nodes, orbit states and service requirements of low-orbit satellites in a system are received, and allowable transmission practice windows and required continuous transmission time slot numbers of the low-orbit satellites are analyzed; on the basis, calculating a space intersection area and a potential interference time period between the low-orbit tracks; and aiming at the differentiated transmission requirements, according to a preset orbit priority sequence, sequentially allocating transmission time slot resources to each low-orbit satellite transmission service. According to the invention, the overall perception of a high-orbit satellite on the orbit state and service requirements of a low-orbit satellite, the search and judgment of orbit cross interference beams and time periods, and the comprehensive decision of service transmission time sequence optimization distribution are carried out; the method achieves the effective avoidance of potential same-frequency interference of transmission services of satellites with different orbits in an intersection region in a complex space-time dynamic environment, and remarkably improves the transmission success rate and the overall resource utilization rate of a large-scale low-orbit constellation system.

The invention discloses a low-delay and high-reliability wireless communication method and system, a medium and a product, and relates to the field of industrial information and data processing.The method comprises the steps that when an industrial control data packet with a priority processing identifier is received, MAC address table look-up operation is executed on the industrial control data packet, and a priority data packet containing a target address identifier is generated; constructing a data transmission path forwarding by bypassing the network bridge according to the target address identifier of the priority data packet; transmitting the priority data packet to a Wi-Fi driving layer through the data transmission path, so as to write the priority data packet to a hardware sending queue, and generating a sending data packet containing a time sequence identifier; determining a periodic transmission time window synchronized with the industrial control period according to the time sequence identifier of the sent data packet; and detecting a channel state index in the transmission time window, generating a retransmission control parameter according to the channel state index, and executing a data packet transmission operation according to the retransmission control parameter. According to the invention, the processing time delay of wireless communication can be reduced.

The invention provides a method and a device used in a node for wireless communication. The method comprises the following steps: a first node determines propagation time delay according to a first parameter; and compensating the sending time of the first data in advance according to the propagation time delay. Wherein the first parameter comprises at least one of the following information: position information of the first node, ephemeris information of a service satellite, public timing advance, parameter effective time, reference signal sending time or an identifier of a track section where the satellite is located.

The invention discloses a multi-node sensor communication link cooperative scheduling method and system based on star flash, and relates to the technical field of new-generation wireless communication and sensors. The method comprises the following steps: constructing a star flash sensor data reporting system; calculating a node valid data volume based on parameters such as sensor types and channel numbers; estimating transmission time and distributing time slots in combination with a star flash frame structure; transmission parameters are dynamically adjusted through a real-time link quality perception and prediction model, and a data priority and preemption mechanism is supported; issuing a scheduling strategy by using the JSON configuration file; and the nodes communicate according to configuration and realize fault self-diagnosis and self-healing. The system comprises a star flash management node, a sensor node and an embedded cooperative scheduling engine. According to the method, multi-node cooperative scheduling, link adaptive optimization and system autonomous recovery are realized, and the communication reliability, the channel utilization rate and the system robustness are remarkably improved.

The invention relates to the technical field of Internet of Things communication, and particularly discloses an Internet of Things communication equipment data transmission packet loss compensation optimization method and system, and the method comprises the steps: obtaining a data packet transmission sequence, and obtaining the receiving state identifiers and transmission timestamps of a plurality of data packets according to the data packet transmission sequence; and acquiring network transmission quality parameters, and acquiring a received signal strength value sequence, a network jitter value sequence and a data packet delay fluctuation value sequence in a continuous time window according to the network transmission quality parameters. According to the method, by dynamically obtaining the multi-dimensional network transmission quality parameters in the continuous time window and calculating the actual loss probability value, misjudgment caused by a fixed threshold value is avoided, reliable recovery of the data flow is achieved in combination with a prediction compensation mechanism and consistency verification, and the problem of packet loss caused by network fluctuation in the environment of the Internet of Things is effectively solved.

This communication apparatus comprises: a control unit that determines, on the basis of a first transmission time for performing a plurality of signal transmissions in a device, a second transmission time for radio waves to be used for the plurality of transmissions; and a communication unit that transmits the radio waves to the device in the second transmission time.

The invention relates to the technical field of photoetching machine data transmission, and discloses an ultra-high-speed distributed data transmission synchronization system of a direct-writing photoetching machine. The system comprises a dynamic exposure pulse analysis module which constructs a distributed transmission delay calculation model based on historical operation data, collects data such as a laser trigger pulse sequence in real time and outputs a theoretical transmission synchronization value; the multi-channel time sequence offset detection module generates a node-level multi-channel time sequence offset matrix through multi-dimensional comparison of the theoretical value and the actual transmission time sequence; the spatial topology mapping module is combined with the physical position and the link impedance parameter to generate a time sequence abnormal propagation path probability distribution cloud picture so as to locate a high-delay area; and the dynamic bandwidth allocation module configures a transmission strategy according to the data, starts redundant channel parallel transmission for a high-delay area, and implements dynamic clock offset compensation for adjacent nodes, so that the synchronization stability and transmission efficiency of data transmission are effectively improved.

The invention provides a differentiated gating and resource reservation method and device for a 5G-TSN system. The differentiated gating and resource reservation method and device for the 5G-TSN system are used for solving the problem that end-to-end deterministic transmission performance cannot be guaranteed due to wireless air interface fluctuation and service competition in a 5G and TSN fusion network. The method comprises the following steps: a TSN controller identifies key network resources, performs gating compression and phase offset processing on the key network resources, generates an end-to-end plan containing a TSN stream expected transmission time slot, and sends the end-to-end plan to a 5G base station; after receiving, the base station reserves a protection TTI and pre-configures a resource block in TTIs outside the planned time slot; and when transmission abnormity occurs in the planned time slot, immediately starting the resource block to carry out remedial transmission on the TSN flow. According to the scheme, through cross-domain collaborative differentiated scheduling and redundant resource reservation, the end-to-end delay and jitter are remarkably reduced while the resource utilization efficiency is improved, and a reliable deterministic transmission guarantee is provided for high-priority services.

The invention provides a communication method and a communication device, which are applied to the technical field of communication. For example, the communication method is adapted to a communication scene in which an LTM mechanism is triggered, and the method comprises the following steps: network equipment uniformly calculates the window length of a time window based on sending time information of reference signals of a plurality of candidate cells; the parameter of the window length of the time window is issued to the UE through the first message, and the measurement starting moment information is issued to the UE through the second message, so that the UE measures a plurality of candidate cells in the first time window (determined based on the parameter of the window length of the time window and the measurement starting moment information), redundant measurement and power consumption of the UE can be remarkably reduced, and the user experience is improved. And the measurement efficiency can be improved. According to the embodiment of the invention, the first message and the second message can be compatible with a signaling structure in the existing 3GPP standard, for example, on the premise of keeping the original LTM signaling architecture unchanged, a measurement time sequence control mechanism of the embodiment of the invention is introduced, so that the first message and the second message are compatible with the existing LTM process.

A first access point (AP) transmits to a second AP a first frame requesting first restricted target wake time (R-TWT) information of the second AP based on not receiving a beacon frame of the second AP within a first period from a target beacon transmission time (TBTT) of the second AP. The first AP receives from the second AP a second frame comprising the first R-TWT information of the second AP in response to the first frame.

The invention discloses an electric vehicle transportation state real-time monitoring method based on multi-sensor fusion, and belongs to the field of electric vehicle transportation state real-time monitoring. A comprehensive state index is obtained through integration of the multi-source data fusion model; acquiring a data transmission priority in the comprehensive state index, and if the data transmission priority is higher than a communication bandwidth threshold, allocating an additional transmission time sequence to obtain a dynamic communication scheduling sequence; carrying out resource allocation on the vehicle-mounted communication system according to the dynamic communication scheduling sequence, and judging whether key safety data such as battery overheating early warning is in the first position of the sequence or not so as to determine a real-time transmission path; and monitoring a communication congestion index in the real-time transmission path, and if the communication congestion index exceeds a threshold value, activating a standby data compression mechanism to obtain a reliable transmission data packet, and sending the reliable transmission data packet to a monitoring center.

The invention discloses a multi-type video signal synchronous alignment method and system, and a medium. The method comprises the following steps: an NDI camera and an ST2110 camera receive PTP time sent by a PTP clock source through a network so as to synchronize equipment time; when the same object is shot, the PTP timestamps during shooting are embedded into video signals respectively, and the video signals are transmitted to a video switching table through a network; and the video switching station reads the PTP timestamps in the NDI signal and the ST2110 signal, calculates the delay frame number according to the difference between the two, and caches the video signal according to the delay frame number so as to realize synchronous alignment. Wherein a timestamp is embedded in an SEI field by the NDI camera, and a timestamp is embedded in an RTP packet header by the ST2110 camera. According to the invention, through a unified time reference and a differentiated cache mechanism, the synchronization problem caused by different compression transmission time consumption of heterogeneous video signals is effectively solved, and accurate synchronization of broadcast signals is ensured.

The invention discloses a sleep emotion state recognition-oriented multi-mode sensing signal analysis method and system, and relates to the technical field of sleep emotion data processing. According to the scheme, a progressive data processing method is constructed, and emotion-sleep state recognition and self-adaptive intelligent feedback regulation and control are achieved. The core process comprises the steps of ensuring the time sequence consistency of original data through multi-mode signal transmission time sequence interference analysis, adaptive selection of fixed clock calibration alignment and multi-mode signal dynamic resynchronization, then extracting and fusing deep features of sleep emotion multi-mode signals by using a deep network, and further completing emotion-sleep state recognition. And finally, sleep emotion collaborative intelligent regulation and control are driven according to a sleep-emotion state recognition result, and a physiological safety monitoring mechanism is introduced, so that the reliability and safety of the regulation and control process are ensured, and the effect of improving the emotion-sleep state recognition and intelligent feedback regulation and control accuracy is achieved.

The invention relates to the technical field of electric energy data acquisition, in particular to an electric energy data acquisition system, device and method, and the system comprises a time calibration module which is used for transmitting a test frame carrying a transmission time mark to an electric energy meter according to a standard time reference signal, capturing an arrival time mark of a return frame of the electric energy meter, and transmitting the arrival time mark to a data acquisition module; and calculating a transmission loop delay value between the sending time mark and the arrival time mark. In the invention, sequencing and locking are carried out among multiple channels according to a communication quality blocking threshold, a high-reliability redundant link is constructed for data transmission, a data cutoff risk caused by single network fluctuation is avoided, hardware state parameters such as response frame return duration and central processing unit temperature are combined, a two-way interaction mechanism is established with a cloud server, and the reliability of data transmission is improved. And firmware updating is triggered according to the remote instruction, so that automatic operation and maintenance and fault early warning of the equipment in the full life cycle are realized, and the maintenance cost of on-site manual troubleshooting and the system downtime are reduced.

The invention relates to the technical field of communication, and discloses an equipment input signal general broadcast communication method, which comprises the following steps that: a central coordination node broadcasts a synchronization frame to establish a global time sequence; the terminal equipment determines an exclusive sending time slot based on identity label hash mapping, and carries out conflict-free transmission in combination with carrier sensing and a dynamic back-off mechanism; the center node periodically evaluates a channel state and adaptively adjusts a time slot structure and a hash parameter; an acknowledgement response and enhanced retransmission strategy is introduced to guarantee reliability; the terminal adopts a low-power-consumption monitoring mode to reduce energy consumption. In combination with an adaptive scheduling strategy of channel state perception, the system can dynamically optimize time slot resource configuration according to a real-time communication environment, and the spectrum utilization efficiency is remarkably improved. And due to the fine design of the carrier sensing and back-off mechanism, the occurrence rate of residual conflicts is further reduced, and reliable transmission of key data is ensured.

Embodiments of the present application provide a random access method. In the method, the compensation amount of a transmission time of a random access preamble is related to the length of a cyclic prefix in a format corresponding to the random access preamble, thereby expanding available resources of a terminal device.

Methods and systems are described herein for calculating a predicted time when a first user will be exposed to a spoiler of a first media asset. A media guidance application may retrieve an initial transmission time of the first media asset and a transmission time of a second media asset that precedes the transmission time of the first media asset. The media guidance application may retrieve electronic communications from a second user whose electronic communications the first user has viewed, and determine a subset of the electronic communications that correspond to the second media asset. The media guidance application may calculate a length of time from the transmission time of the second media asset to the earliest availability time of an electronic communication in the subset. The media guidance application may calculate the predicted time based on the transmission time of the first media asset and the length of time.

The application provides an information prediction method and device, a network device and a node device. The method comprises: sending service transmission prediction information of a terminal scheduled at a first time to a first node; the service transmission prediction information comprises an uplink interference prediction value and / or a channel matrix prediction value; the first time is after a second time, and the first node obtains an uplink reference signal sent by the terminal at the second time. By using the method, the first network device can send service transmission prediction information of a terminal scheduled at a first time to a first node, the first time is after a second time at which an uplink reference signal sent by the terminal is obtained, so that the first node can determine uplink channel quality according to the service transmission prediction information of the terminal scheduled at the first time, ensure that the selected MCS value can conform to the channel quality at the uplink PUSCH data service transmission time, and avoid the problem that the selected MCS value does not conform to the channel quality at the uplink PUSCH data service transmission time.

The application discloses a time slot scheduling method of an underwater dynamic multi-hop distribution network based on a time division multiple access protocol, relates to the field of underwater acoustic communication, and is aimed at the underwater multi-hop distribution network, improves the traditional static time slot allocation based on the TDMA protocol, designs a data packet frame structure, comprehensively considers transmission time delays among underwater nodes, dynamically adjusts time slots allocated to the underwater nodes based on the maximum transmission time delay, considers a dynamic node random access condition, and realizes the design of the time slot scheduling method of the underwater dynamic multi-hop distribution network.Compared with the traditional static time slot allocation method, the method can effectively improve the overall throughput of the network and optimize the network operation efficiency.

The embodiment of the present application provides a data transmission method and related equipment, which are used for synchronously transmitting haptic information and other types of information, increasing transmission efficiency, and improving overall user experience. The method of the embodiment of the present application comprises the following steps: a network device receives a haptic data stream and at least one first data stream sent by a machine side device, wherein the haptic data stream and the at least one first data stream comprise a synchronization identifier; and the network device synchronizes transmission time of the haptic data stream and the at least one first data stream.

This device having a lower complexity than a narrow band internet of things (NB-IoT) device comprises: a reception unit that receives a reception signal including control information from a wireless communication device; a control unit that sets a first reference point, which is a timing in a reception time of the reception signal and is a start point of a time interval, and a second reference point that is an end point of the time interval; and a transmission unit that transmits a transmission signal to the wireless communication device in a transmission time including the second reference point. The control unit sets the time interval on the basis of the control information and sets the second reference point on the basis of the first reference point and the time interval.

This invention discloses a ranging method and system based on a network data link, relating to the field of wireless communication ranging technology. The method includes the following steps: synchronizing the clocks of all nodes in the network and aligning the transmit and receive timings between nodes; each node in the network transmitting a synchronization signal within its allocated fixed transmission time slot according to a preset fixed frame structure; the receiving node calculating the theoretical time at which it receives the synchronization signal when the signal propagation delay is zero based on the synchronization clock and the preset fixed frame structure, and recording the actual time of receiving the synchronization signal; and the receiving node calculating the distance between itself and the node that transmitted the synchronization signal based on the time difference between the theoretical and actual times. This invention effectively eliminates ranging errors caused by crystal oscillator clock deviations between nodes, requires no external satellite signals or two-way signaling interaction, and achieves ranging by multiplexing the synchronization signal. It significantly reduces hardware costs while achieving high-precision, low-latency, and environmentally adaptable inter-node ranging.

This application relates to the field of network communication technology, and in particular to a path pre-planning method, apparatus, and related equipment. The method includes: statistically analyzing the traffic presence of each training stream in each time slice of the current iteration cycle, wherein an iteration cycle is divided into M time slices, each time slice having the same duration; determining whether there is any overlap in traffic transmission time between the training streams based on the traffic presence of each training stream in each time slice of the current iteration cycle; and pre-planning the forwarding path of each training stream in the parameter network in the next iteration cycle based on the overlap in traffic transmission time between the training streams and the device and interface information of each training stream flowing through the parameter network.

The invention provides a wireless ad hoc network time synchronization method, device and system and communication equipment, and relates to the technical field of communication. The wireless ad hoc network time synchronization method comprises the following steps: generating a reference clock signal based on a GNSS (Global Navigation Satellite System) signal of a global navigation satellite system; generating a local clock signal synchronized with the reference clock signal; determining a sending window of the wireless frame according to preset sending time slot configuration; wherein the starting moment of the sending window is set to be deviated from a specified edge of the reference clock signal by a preset time delay; generating and sending the wireless frame in the sending window; wherein the wireless frame at least comprises equipment identification information and time synchronization identification information, and the initial sending time of the wireless frame is consistent with the initial time of the sending window.

The application discloses a dimming data transmission method, a backlight system and a display device. The method comprises the following steps: in a display period of a frame image, after a dimming controller sends a frame start identifier to a dimmer, the dimming controller continuously sends a plurality of dimming data packets to the dimmer, each dimming data packet comprises a synchronization signal and N-bit dimming data, N is a positive integer, and N is greater than or equal to 2; and the dimmer determines target dimming data based on a sampling control signal and the dimming data packet received by the dimmer. By sending the dimming data packet comprising the N-bit dimming data, the transmission of multiple bits of dimming data can be simultaneously performed for each dimming data packet, so that the overall transmission time length of the dimming data is shortened, the transmission efficiency is improved, the probability of level jump in the transmission process is reduced, the EMI problem of the system is alleviated, and the display performance is improved.

The invention provides an intercommunication system of a quantum computer, an intercommunication execution method, equipment, a medium and a product. The intercommunication system comprises the steps that a quantum routing system receives a to-be-executed task and carries out analysis and task decomposition on the to-be-executed task to obtain a plurality of sub-tasks; establishing a task allocation strategy based on the computing resource information of each quantum computer; the quantum repeater determines a quantum bit entanglement relationship in the quantum computers based on a task allocation strategy, and establishes quantum entanglement pairs for quantum bits in the quantum computers based on the quantum bit entanglement relationship so as to form a transmission link between the quantum computers; and the task distribution system distributes the sub-tasks to the corresponding quantum computers based on a task distribution strategy, so that at least one quantum computer corresponding to the sub-tasks executes the sub-tasks. Direct interconnection of multiple quantum computers is achieved, the number of transmission times between the quantum computers and classic computers in the task execution process is reduced, and the data transmission efficiency is improved.

The application discloses an ionospheric parameter inversion method and system based on short-wave time difference information. A plurality of near-distance receiving stations are used to form a receiving station cluster, so that the reflection area of the short-wave propagation path corresponding to each receiving station in the ionosphere is approximately a common ionospheric reflection area, and a same set of F2 layer parameters is used to describe the ionospheric state of the area. The application obtains the observation time difference of each receiving station relative to a reference receiving station, performs ray tracing forward in a candidate parameter space to obtain the theoretical group path of each receiving station and calculate the theoretical time difference, searches for optimal ionospheric parameters by taking the error minimization of the observation time difference and the theoretical time difference as a criterion, and realizes the inversion of the F2 layer critical frequency, the peak height and the half thickness of the common ionospheric reflection area. The application uses the relative time difference between the receiving stations to replace the absolute propagation time delay for inversion, eliminates the influence of non-ionospheric factors such as the unknown transmission time, system delay and receiver clock difference, and improves the inversion precision and reliability.