135results about How to "Alleviate the pressure of data transmission" patented technology

The invention discloses a real-time stream data processing method and system of a smart city. The method comprises the steps of data collection, data type classification, data cleaning, data calculation and analysis, data display, data persistence storage and the like. The invention sets up a data collection module in the mode of mainly using Flume and supplemented by API collection, and utilizeschannel to carry out data persistence, so as to ensure reliability in the process of data transmission. Using Kafka as a stream processing platform and introducing the fault-tolerant mechanism of Flink to consume Kafka data in high level, the real real-time stream data processing can be realized, which can support millisecond-level computation. In addition, perfect window support of Flink providesmore perfect window aggregation computation API than Storm. Finally, WebSocket is used to establish the connection channel between a server and a Web end to provide real-time data service, reduce thepressure of data transmission, and improve the high concurrent access and availability of the system.

The invention discloses a method for transmitting packet data convergence protocol data, comprising the following steps of: setting a corresponding local user data loop module for each PDCP (Packet Data Convergence Protocol) entity in a base station, receiving a UE identifier pair allowing direct user data exchange in the base station and issued by a network side and storing the UE identifier by the base station; receiving uplink data of the UE and transmitting the uplink data to the local user data loop module of the UE by the PDCP entity of the UE in the base station; analyzing the uplink data packet by the local user data loop module of the UE and judging whether the uplink data packet accords with the preset strategy, if so, transmitting the uplink data packet to the destination UE directly by the local user data loop module of the UE. The invention also discloses a device for transmitting packet data convergence protocol data. The invention greatly reduces the data transmission pressure of a core net.

The invention discloses an unmanned aerial vehicle group cooperative safety control method based on switching topology. The method comprises the following steps: utilizing a time-varying switching topological graph to represent information interaction among unmanned aerial vehicle groups in each switching subsystem; considering the influence of external interference, respectively establishing thesecond-order dynamic equations of an unmanned aerial vehicle pilot and an unmanned aerial vehicle follower in the switching subsystems; designing a safety controller which simultaneously considers external interference and event triggering for tracking the motion track of the unmanned aerial vehicle pilot and keeping the formation among the unmanned aerial vehicle groups of followers; and establishing the equation of an unmanned aerial vehicle group error system under the switching subsystems to obtain the stability condition of unmanned aerial vehicle group error system, and inhibiting external interference by utilizing an H infinite method. The method solves the problems of information interaction, data redundancy and external interference under different formations in unmanned aerial vehicle formation.

A method for balancing load of sector in time division combinational network enables to utilize idle time of sector on small load direction to transmit data of sector on overload direction for releasing data transmission load on overload sector to solve congestion problem of this direction and simultaneously to utilize system bandwidth effectively.

The invention provides a cross data source inquiry device which comprises a main data source selection module 102, a first inquiry module 104, a data acquisition module and a second inquiry module. The main data source selection module is used for selecting one database from a plurality of databases to serve as a main data source. The first inquiry module is used for conducting data inquiry in the plurality of databases except the main data source to obtain inquiry result data. The data acquisition module is used for acquiring the inquiry result data of the databases except the main data source into the main data source. The second inquiry module is used for conducting data inquiry in the main data source to obtain final inquiry result data. Correspondingly, a cross data source inquiry method is further disclosed. By means of the technical scheme, enterprises can have a light-weight technical scheme with low construction cost, short construction period, large inquiry data quantity, various data logic structure and high generality when conducting cross data source inquiry, so that the device and the method ensure that the enterprises can effectively resolve the problems of large data quantity and too large pressure of an application server.

The present application provides a fraud detection and risk assessment method, a system, a device, and a computer readable storage medium. Said method comprises the following steps: acquiring original data of a client user; using a data processing algorithm to extract characteristic data from the original data; inputting the characteristic data into a pre-trained machine learning model matching the characteristic data, generating a model output result, and uploading same onto a server; and outputting a fraud detection and risk assessment result using a risk control decision engine in conjunction with the model output result, historical data associated with the client user, and third party data. By using the present application, the computing capability of a client device can be fully utilized, reducing the computing pressure on the server. As the client does not need to upload the original data to the server, the present application can also reduce the data transmission pressure on the client and the server and reduce the risk of leakage of the user's private data and security information.

The invention discloses an intelligent traffic monitoring system capable of automatically braking an automobile, and the system comprises a central control module. The central control module is in communication connection with an on-site traffic monitoring module through a 4G wireless network, and is also connected with a database, a parking guide module, and a violation alarm prompt module. The parking guide module and the violation alarm prompt module are in communication connection with a short message transceiver of a car owner through a short message alarm module. The central control module is connected to a remote control unit of a remote control center through the 4G wireless network, and the remote control unit is also connected with a display screen, an alarm, and a remote command input unit. The on-site traffic monitoring module comprises a GPS positioning unit, an automobile braking unit, and an image collection unit. The system not only can achieve the monitoring of a plurality of control units, automatically brakes a violation vehicle, also can achieve the flow division, facilitates the alleviation of transmission pressure of system data, and improves the data transmission efficiency.

The invention discloses a method for notifying a user data radio bearer requirement. The method comprises the step that: user equipment (UE) notifies an evolved universal terrestrial radio access network (E-UTRAN) of the user data radio bearer requirement through a radio resource control (RRC) signaling. The invention also discloses a system for notifying the user data radio bearer requirement. The system comprises a notification unit on a UE side for the UE to notify the E-UTRAN of the user data radio bearer requirement through the RRC signaling. The method and the system of the invention are used to enable the E-UTRAN to acquire the user data radio bearer requirement of the UE so as to subsequently optimize the transmission of user data by the judgment of the E-UTRAN.

The embodiment of the invention discloses a data processing method and device and a readable storage medium. The method comprises the following steps: splitting multimedia data to obtain first resource data and second resource data, allocating a target resource positioning identifier associated with content distribution equipment to the second resource data, and sending the second resource data tothe content distribution equipment; receiving a data access request sent by terminal equipment, wherein the data access request carries target user information corresponding to terminal equipment; acquiring request data associated with the target user information according to the data access request, wherein the request data comprises a target resource positioning identifier and first resource data; and sending the request data to the terminal device, so as to enable the terminal device to obtain second resource data based on the target resource positioning identifier, and synthesize the first resource data and the second resource data to obtain page display data. By adopting the embodiment of the invention, the data transmission quantity of the server can be reduced, and the data processing efficiency is further improved.

The invention discloses a downlink data transmission method, device and system, and aims at reducing the data transmission burden of a data fronthaul interface. The method comprises that a first device receives data of a scheduled terminal from a second device via the fronthaul interface, and the second device carries out first spatial-domain preprocessing on baseband data of the scheduled terminal to obtain the data of the scheduled terminal; the first device carries out second spatial-domain preprocessing on the data of the scheduled terminal; and the first device converts the data obtained after second spatial-domain preprocessing into an RF signals, and sends the RF signal.

The invention relates to a pervasive computing environmental data processing control method based on mobile agent. A pervasive computing environment network structure is divided into three sections: a base station, grids and clusters. Data collection, data transmission and data processing are executed in the data processing process, and each section is achieved by using the mobile agent technique. The communication between each two section is achieved by message communication between mobile agents. The key section is data transmission. The network region in the pervasive computing environment is divided into uniform grids, the clusters are constructed in each unit grid, and a shortest path tree is constructed based on the root of a cluster header node in the cluster to form a tree-shape cluster structure. Data processing mobile agents are allocated to cluster headers through the base station, and finally data collection, transmission and processing are executed by the mobile agents, thereby balancing the network energy consumption, lowering the network data transmission energy, reducing the network data processing pressure, and improving the data processing speed.

The invention relates to a motor train unit key data wireless transmission protection method based on a dual-mode navigation system, which belongs to the field of a high-speed motor train unit wireless communication protection method. The method comprises the following steps: respectively additionally arranging an AP wireless network and a communication device of a BDS Beidou navigation system for a motor train, respectively transmitting train key data to other motor train units or ground operation dispatching command centers according to bi-directional short messages of a priority sequence of AP wireless network, GPRS network and BDS Beidou navigation system, so that high cost performance and high efficiency of the AP wireless network and the communication advantages of BDS Beidou navigation system can be sufficiently utilized, and the wireless transmission timeliness and reliability of the motor train unit key data can be greatly improved. By adopting the method, data with lower requirement on timeliness is only transmitted by virtue of WIFI of AP wireless network when the motor unit train enters a station or enters a garage, and the data transmission pressure can be alleviated.

The invention discloses a longitudinal traveling wave protection method applicable to a hybrid direct current power transmission line. The method comprises the steps as follows: an LCC end protectionunit and a VSC end protection unit separately acquire positive and negative high frequency voltage traveling wave signals and positive and negative high frequency current traveling wave signals of corresponding ends on the power transmission line, an LCC end faulted pole and a VSC end faulted pole are recognized according to the positive high frequency current traveling wave signal and negative high frequency current traveling wave signal of the corresponding end and known faulted poles; a fault direction corresponding to the LCC end faulted pole and the fault direction corresponding to the VSC end faulted pole are recognized; if the fault detections of the LCC end and the VSC end are forward, the fault type is determined to be the internal fault, and otherwise, the fault type is determined to be the external fault; and corresponding protection is executed according to the determined fault type.

The invention discloses an insulator intelligent wide area state detection system and a state identification method, and the system comprises a plurality of information collection modules which are used for monitoring the state information of the corresponding to-be-monitored insulators; a plurality of area identification communication modules, wherein each area identification communication module is correspondingly connected with the plurality of information acquisition modules, and is used for realizing the information interaction with a centralized management module and each information acquisition module, collecting the state information sent by each information acquisition module in different areas to carry out the preliminary state identification, and outputting a preliminary identification result; and the centralized management module which is respectively connected with each area identification communication module, and is used for sending a control instruction through each area identification communication module, receiving the preliminary identification result sent by each area identification communication module for comprehensive processing, and screening out an abnormal or faulty insulator. The advantages of the present invention are that the implementation method is simple, the cost is low, the needed communication bandwidth is small, the detection precision and efficiency are high, the real-time performance and anti-interference performance are strong, etc.

The invention discloses a hybrid direct-current transmission line traveling wave protection method based on S transformation. The method includes: respectively acquiring voltage traveling wave data and current traveling wave data on electric transmission lines at two ends, and respectively acquiring 1-mode voltage traveling wave data and 1-mode current traveling wave data at each end based on thevoltage traveling wave data and the current traveling wave data; performing S transformation on the 1-mode voltage traveling wave data and the 1-mode current traveling wave data of each end to obtainan S transformation matrix corresponding to each end; acquiring an amplitude-frequency traveling wave matrix corresponding to each end according to the S transformation matrix of each end, and calculating amplitude-frequency traveling wave energy corresponding to each end according to the amplitude-frequency traveling wave matrix of each end; identifying the fault direction of each end according to the amplitude-frequency traveling wave energy of each end; identifying the fault type according to the fault directions of two ends; and executing corresponding protection according to the identified fault type. By applying the method, the reliability of the hybrid direct-current transmission line traveling wave protection can be improved.

The embodiment of the invention relates to the technical field of computers, in particular to a cross-node data processing method and device, which are used for reducing the remote calling difficulty of a peripheral system. The method comprises the steps that a first node receives a data processing message; the first node analyzes the data processing message, determines a main process and judges whether the main process contains N sub-processes or not; if the main process comprises N sub-processes, the first node executes the main process and sequentially determines nodes corresponding to the N sub-processes; for the first sub-process, the first node executes the first sub-process, and the first sub-process is a sub-process with the corresponding node in the N sub-processes as the first node; for the second sub-process, the first node generates a to-be-processed message according to the second sub-process and sends the to-be-processed message to the second node, so that the second node executes the sub-process according to the to-be-processed message; wherein the second sub-process is a sub-process in which the corresponding node in the N sub-processes is a second node, and the second node is a node other than the first node.

The invention provides an automatic shot indication and trajectory measurement system for a relevant double-sampling linear array sensor. For a low-speed projectile, at least two high-speed linear array sensors are used for detecting the position of a position of a shot, at least three phase-shift high-speed linear array sensors are used for a high-speed projectile, and more sensors are used for shortening phase-shift time to detect the position of the position of the shot and a target passing moment. The automatic shot indication and trajectory measurement system adopts a reflection type light source, projectiles are used for reflecting a light spot for detection, a bullet category is not restricted, and infrared light interference is resisted. The invention also adopts a calibration light bar to carry out self-adjustment, and an irreversible deformation error can be eliminated. By use of the scheme, relevant double sampling is adopted to eliminate the null point and the drift of thelinear array sensor, individual adjustment is not required, and a situation that multiple periods of initial data are required to eliminate the null point and the drift is avoided. An automatic threshold value method for solving a bright spot coordinate can be easily realized through hardware, including FPGA (Field Programmable Gate Array) and the like, data transmission and processing pressure are reduced, and the automatic shot indication and trajectory measurement system is favorable for utilizing a plurality of linear array sensors to improve measurement accuracy of the target passing moment.