19results about How to "Reduce retransmission" patented technology

The invention relates to the technical field of intelligent water affair management, and discloses a method and system for dynamically adjusting the reporting moment of an NB water meter, and the system comprises NB water meter terminal equipment which is responsible for collecting water meter data in real time and uploading the data to a data management platform through an NB-IoT network; the data management platform is responsible for receiving, processing and storing data from the plurality of NB water meter terminal devices; the reporting moment adjusting module is used for dynamically adjusting the reporting moment of the NB water meter terminal equipment according to the strategy generated by the data management platform; the communication management module is responsible for communication between the NB water meter terminal equipment and the data management platform; the intelligent alarm and event processing module is responsible for monitoring the running state of the system in real time; and an equipment remote control module. By dynamically adjusting the reporting time, the system can reduce unnecessary frequent reporting, especially in a time period when the water consumption is relatively small or relatively stable, so that the power consumption of the equipment is remarkably reduced. Therefore, the battery life of the NB water meter terminal equipment can be prolonged, and the maintenance cost is reduced.

The invention provides a communication method of multi-application communication based on a serial interface and a storage medium, the communication method is applied to a protocol stack of multi-application communication, a hardware layer of the protocol stack uses an asynchronous full-duplex serial interface, and the communication method comprises the following steps: establishing a point-to-point transmission channel between applications through the asynchronous full-duplex serial interface; a sending end sets sending numbers for data packets, the data packets are packaged into data frames through a data link layer of a protocol stack, and the data frames are sequentially sent through a transmission layer of the protocol stack according to priorities of point-to-point transmission channels of different applications in all the applications; and the receiving end receives the data frame and verifies the transmission integrity of the data packet according to the sending number. The technical problems that the design of an existing communication method in a multi-chip ECU board is complex, and communication of multiple applications in two chips through one interface cannot be achieved are solved.

The invention relates to the technical field of Bluetooth sound boxes, in particular to a Bluetooth sound box synchronous playing method and system. The method comprises the following steps: performing master device election on a Bluetooth loudspeaker box group to obtain a loudspeaker box group master device identifier; carrying out distributed time synchronization network construction on the Bluetooth sound box group based on the sound box group main equipment identifier to obtain a sound box group time synchronization network; performing environment signal scanning on the Bluetooth sound box group to obtain environment frequency band signal data; performing dynamic frequency band allocation on the Bluetooth loudspeaker box group based on the environment frequency band signal data to obtain a loudspeaker box group frequency band allocation scheme; performing network performance parameter monitoring on the Bluetooth sound box group to obtain a sound box group network performance parameter set; and according to the sound box group network performance parameter set, performing audio buffer area determination on the Bluetooth sound box group to obtain an audio buffer area distribution scheme. According to the invention, the accuracy and stability of audio synchronization are improved, the user experience is optimized, and the application scene of the Bluetooth sound box is widened.

The invention provides an intelligent meter reading method and device, electronic equipment and a storage medium, and relates to the technical field of intelligent power grids, the method comprises the following steps: obtaining a group of communication index parameters of each node in a node set, the node set comprising a group of agent nodes and a group of station nodes in a target area; obtaining a communication quality score corresponding to each node according to the group of communication index parameters of each node; according to the communication quality scores corresponding to all the nodes, meter reading operation is executed on all the nodes in sequence from high to low, so that all the nodes collect electricity utilization data and send the electricity utilization data to a central node, and a target communication network is formed by one group of agent nodes, one group of station nodes and the central node. By implementing the technical scheme provided by the invention, the effect of improving the meter reading efficiency is achieved.

This invention discloses a whole-house intelligent control method and system based on multi-protocol fusion, belonging to the field of intelligent home control technology. The method includes: performing detection on frequency points within the range of 2400 to 2483.5 MHz to obtain the interference margin at each frequency point, and obtaining a frequency point status table based on the interference margin; mapping the operating bandwidths of Wi-Fi, Zigbee, and Bluetooth onto the frequency point status table to obtain the initial available channel sets for Wi-Fi, Zigbee, and Bluetooth respectively; preset a maximum queuing delay and calculate a real-time scheduling weight based on the maximum queuing delay; calculating the time slot ratio for Zigbee and Bluetooth based on the real-time scheduling weight; when the interference margin is higher than a preset engineering threshold for a continuous period, selecting the target channel to be migrated based on the available channel set to execute the channel migration process. In existing technologies, different smart home devices use different communication methods, which can easily cause mutual interference and affect the overall management effect. Compared with existing technologies, this invention can effectively coordinate different communication methods, thereby reducing mutual interference.

The invention discloses a low-delay TCP (Transmission Control Protocol) or UDP (User Datagram Protocol) checksum calculation method based on an FPGA (Field Programmable Gate Array), which relates to the technical field of data communication and comprises the following steps of: determining the scale, performance and dominant frequency parameters of the FPGA, and multiplying the bit width of original data to be calculated before the data is input into a buffer area; dividing the multiplied data bit width into a plurality of 16b-it data segments based on DSP resources in the FPGA, and performing accumulation operation in parallel; and processing a parallel accumulation result by adopting a pipeline mode, and adjusting sequential logic. Through the parallel processing capability of the FPGA, the calculation of the TCP / UDP checksum can process a plurality of data segments at the same time, the overall processing speed is remarkably improved, the calculation of the checksum is completed in a short time by designing the parallel accumulation operation and the pipeline structure, the uncertainty and the error rate in the calculation process are reduced, and the calculation efficiency is improved. The reliability and stability of data transmission are further enhanced, and the risks of retransmission and packet loss caused by data errors are reduced.

This disclosure provides a semantic communication method, apparatus, electronic device, and storage medium, relating to the field of computer technology, specifically semantic communication technology. The method is applied at a receiving end, and its specific implementation involves: receiving a semantic data packet sent by a sending end; extracting the semantic checksum contained in the semantic data packet to obtain a received semantic checksum; calculating the semantic distortion degree based on the received semantic checksum and the target semantic checksum to obtain retransmission indication information; and instructing the sending end to retransmit the semantic data packet based on the retransmission indication information. This disclosure's retransmission decision mechanism based on semantic checksum deviation not only improves the accuracy of data transmission but also optimizes communication efficiency.

The invention provides a low-voltage distribution line state supervision method and system based on dual-mode communication, belongs to the field of power line carrier communication, and solves the problems that the current combined communication scheme of the dual-mode communication and the low-voltage distribution line state supervision system is not perfect, and terminal information acquisition and management of a low-voltage transformer area still have the conditions of low receiving probability, more retransmission and even island terminals. The method comprises the following steps: acquiring reference phase information of a transformer side, and controlling a plurality of power distribution terminals to upload local voltage phase fragments in a preset supervision period; at an edge node, aligning the reference phase information with a local voltage phase fragment sent by each power distribution terminal, obtaining a phase difference of each power distribution terminal relative to the reference phase information by adopting least square estimation, and generating a phase correction table based on the phase difference; and automatically correcting the phase mark of each power distribution terminal based on the phase correction table, re-marshalling the in-phase broadcast or multicast domain, and re-allocating the communication time slot corresponding to the multicast domain.

The invention discloses a video data transmission method and device, a storage medium and electronic equipment. The method comprises the following steps: respectively dividing each video frame in a group of video frames acquired by image acquisition equipment into a group of data messages; increasing the sending power, reducing the receiving power, and sequentially sending a first group of data messages corresponding to the first video frame to the monitoring platform according to the sequence identifier; in response to the fact that the first data message is sent, the receiving power is improved, and the sending power is reduced; and under the condition that a first response message corresponding to the first group of data messages is received, the sending power is improved, the receiving power is reduced, and a second group of data messages corresponding to the second video frame are sequentially sent to the monitoring platform according to the sequence identifier. The technical problem of low transmission efficiency of the video data is solved.

The invention relates to a memory access method and device, computer equipment, a computer readable storage medium and a computer program product, and can be applied to the technical field of computers. The method comprises the following steps: sending a first memory access request to a response end; the first memory access request carries a request serial number; receiving a first memory access response which is returned by the response end based on the first memory access request and corresponds to the request serial number; the first memory access response carries a response serial number; determining a missing serial number of the first memory access request according to the request serial number and the response serial number; sending a second memory access request carrying the missing serial number to the response end; the second memory access request is used for indicating the response end to return a second memory access response corresponding to the missing serial number. By adopting the method, the memory access efficiency can be improved.

The invention provides a data transmission rate selection method and device. The method comprises the following steps: acquiring a sending success rate of each available rate in a current period; updating the first weight factor according to the current channel condition; according to the sending success rate and the first weight factor of each available rate in the current period, respectively updating the long-term average success probability of each available rate by adopting an exponential weighted moving average algorithm; according to the available rate and the long-term average success probability corresponding to the available rate, predicting the reachable throughput sent in the next period at the available rate; and selecting the available rate with the highest throughput from all the available rates as the first transmission rate of the next period. According to the invention, the weight factor of the EWMA is dynamically adjusted according to the current channel condition, the rate selection can quickly follow the change of the channel condition, and better performance is obtained.

This invention discloses a joint optimization method for topology routing based on deep reinforcement learning, belonging to the field of UAV communication networks and routing. Specifically, UAVs are deployed within the test airspace to serve M mobile users. The test airspace is then gridded, and users publish task requests within a time step. UAVs, acting as nodes, are randomly deployed on the grid. For each UAV node, a Markov decision process is modeled and solved using a multi-agent reinforcement learning algorithm to obtain the movement decision for the next time step. This Markov decision process is repeated to obtain the final movement path for each UAV. For each task request, the corresponding UAV calculates the multi-index link cost function of its neighboring nodes and selects the neighboring node with the lowest cost value as the next hop for task transmission until the target node is reached. This invention improves the data transmission efficiency and network stability of ad hoc flying networks in complex dynamic environments.

The application provides a low-voltage distribution line state supervision method and system based on dual-mode communication, and belongs to the field of power line carrier communication. The current combined communication scheme is not perfect, and the terminal information collection and management of low-voltage transformer areas still have problems such as low receiving probability, more retransmission, and even island terminal conditions. The above method comprises the following steps: obtaining reference phase information on the transformer side, controlling multiple distribution terminals to upload local voltage phase segments within a preset supervision period; at the edge node, aligning the reference phase information with the local voltage phase segments uploaded by each distribution terminal, using least square estimation to obtain the phase difference of each distribution terminal relative to the reference phase information, and generating a phase correction table based on the phase difference; automatically correcting the phase label of each distribution terminal based on the phase correction table, and reorganizing the in-phase broadcast or multicast domain, and reassigning the communication time slots corresponding to the multicast domain.

A communication method for an Internet of Things system based on LoRa communication relates to the technical field of Internet of Things communication, and the method comprises: obtaining the location information of a LoRa node device in a target area map; determining the first installation location of a LoRa gateway device according to the building location information in the target area map; recording the historical signal strength of each LoRa node device under different weather conditions; determining the second installation location of the LoRa gateway device based on the historical signal strength; and automatically switching the LoRa gateway device at the second installation location to receive and send communication data when it is detected that the strength signal of the LoRa node device is weak. The implementation of this method can cope with the communication interruption problem between the LoRa node device and the LoRa gateway device caused by weather changes, and improve the stability and real-time performance of data communication of the Internet of Things system in a changing environment.

This invention provides a wireless communication and control method for smart meters, relating to the field of measurement value and control signal transmission technology. The method includes, on the smart meter side, encapsulating the measurement data to be transmitted to generate a service message, assigning the service message a monotonically increasing message sequence number and a sampling timestamp corresponding to the measurement data, and writing it into a transmission buffer. This wireless communication and control method for smart meters, by introducing a monotonically increasing message sequence number and sampling timestamp based on device and service type dimensions into the service message on the smart meter side, and combining this with the deduplication, reordering, and sliding window confirmation mechanism at the receiving end, achieves reliable transmission and orderly output of measurement data even in the event of packet loss, out-of-order delivery, and latency jitter in the wireless link. This avoids the impact of data duplication, out-of-order delivery, or missing data on the accuracy of service processing, and improves the reliability and data consistency of wireless communication.

The invention relates to the technical field of data processing, in particular to a food production workshop safety risk early warning method and system.The method comprises the steps that a plurality of sensors are used for collecting production data in a biscuit production workshop and transmitting the production data to a display screen, and a risk assessment model is trained according to the production data; analyzing the safety risk of the biscuit production workshop by using the trained risk assessment model to output an analysis result, setting a risk early warning trigger threshold according to a historical analysis result, and giving an alarm when the production data reaches the risk early warning trigger threshold; determining the early warning stability of the safety risk based on the variance of the transmission delay duration of the production data; if the early warning stability does not meet the requirement, determining the size of a data packet of production data; and if the accuracy of the production data does not meet the requirement, determining the acquisition frequency of the production data. According to the invention, the early warning stability of the safety risk is improved.

The invention relates to the technical field of intelligent driving, and discloses a resource sharing method, device and equipment for a vehicle terminal and a mobile terminal and a medium, the method is applied to a management terminal, the management terminal is the vehicle terminal or the mobile terminal, and the method comprises the following steps: establishing communication connection with a managed terminal through a star flash communication technology; obtaining available computing resource parameters and available storage resource parameters of the management terminal and the managed terminal; performing resource virtualization through the available computing resource parameters and the available storage resource parameters to generate a computing resource pool and a storage resource pool; and when the application program in the management terminal or the managed terminal executes the computing task or the storage task, allocating computing resources or storage resources to the computing task from the computing resource pool or the storage resource pool. According to the invention, the problems of low utilization rate and low use performance of shared resources are solved.

The present application relates to the technical field of data processing, and especially relates to a power consumption monitoring method and system of an intelligent warning device based on the Internet of Things, wherein the method obtains a static basic reporting period according to signal quality of a region where a target vehicle monitored by the intelligent warning device is located at a current time and a minimum average reporting period allowed by the intelligent warning device; the static basic reporting period and a preset retransmission number are adaptively adjusted according to signal quality of a communication link of the intelligent warning device, network congestion, a time when the target vehicle fails, acceleration of the target vehicle, and data of various state monitoring indexes of the intelligent warning device at the current time, so as to obtain an adaptive reporting period and an adaptive retransmission number, and then complete next power consumption data reporting, thereby improving accuracy of power consumption monitoring of the intelligent warning device while ensuring working power and data timeliness of the intelligent warning device.

The invention relates to the technical field of artificial intelligence data delay processing. The invention relates to a data delay processing method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining a source data packet, carrying out the analysis and prediction of the source data packet through a trained artificial intelligence prediction model, and obtaining the prediction delay time of the source data packet, and adjusting the processing priority and the transmission path of the source data packet according to the predicted delay time of the source data packet to obtain a processed data packet, and transmitting the processed data packet to a target address through a data packet transmission protocol. The method has the effect of improving the data transmission efficiency and stability.