243results about How to "Reduce communication pressure" patented technology

The invention provides a data storage method and a system, an apparatus and a storage medium. The method comprises the following steps: a global index table corresponding to a Merkel tree of each block is stored locally at each node of a block chain network; and a Merkel tree of each block is stored locally. Where the version number of the version is the block height, and the global index table isused to query data according to the block height. By configuring the corresponding global index table for the Merkel tree and taking the block height as the version number, the invention provides a data inquiry way for the system to inquire the global index table directly through the block height and complete the inquiry through one reading operation, thereby greatly improving the data reading performance of the system. And further optimizes the robustness of the system in the event of transaction congestion or node crash.

The invention provides a Block chain-based method for accessing a power Internet of Things terminal, comprising the steps of: connecting a to-be-accessed power Internet of Things terminal to a masternode, and initiating an authentication request; the master node responding to the authentication request, and randomly selecting nodes that meet the condition of a threshold number from the block chain to form an authentication group; encrypting a public key G and an identity ID of the to-be-accessed power Internet of Things terminal by using a private key to obtain a digital signature ciphertextX, and sending the identity ID, a terminal public value R and the digital signature ciphertext X to the master node; the master node encapsulating and sending the authentication request information toa member node of the authentication group; the authentication group running PBFT consensus algorithm, and obtaining an authentication result by performing distributed authentication through two-two exchanging of the authentication information between the nodes of the authentication group; generating a new block in the block chain, and returning confirmation information to the to-be-accessed powerInternet of Things terminal; and the power Internet of Things terminal returning encrypted confirmation information to an access gateway. The block chain-based power Internet of Things terminal access method can improve the security and efficiency of authentication.

The invention belongs to the technical field of edge cloud computing systems, and discloses a distributed edge cloud system architecture. The architecture comprises an edge node, an edge computing intelligent brain platform layer and an edge security boundary layer, wherein the edge node communicates with the edge computing intelligent brain platform layer through an edge private network; an intelligent brain platform of the edge computing intelligent brain platform layer is in butt joint with a plurality of different edge nodes to realize distributed deployment; data are acquired through external terminal equipment accessed by the edge node and uploading the data to the edge node for processing; the edge computing intelligent brain platform layer communicates with the center cloud or theindustry cloud through the edge security boundary layer; the edge security boundary layer serves as an interface for communication between the edge cloud system and the center cloud or the industry cloud and is used for guaranteeing the communication security between the edge cloud and the center cloud or the industry cloud; the system architecture has the characteristics of low time delay and high security, and meets the requirements of agile connection, real-time service, data optimization, intelligent application, security and privacy protection.

The interaction system includes following parts: being setup at server end, the advertising management system manages online advertisement (ad); being setup client end, the syntax analysis system is in use for picking up and analyzing user's instant message content, and sending the obtained key words to the advertising management system. The invention also discloses online ad interaction method of instant communication tool. In the invention, the syntax analysis system is setup at client end, which possesses advantages: reducing user's worry about those private records are communicated and violated; protecting user's privacy; reducing communication pressure as well as analyzing and processing pressure for ad server since syntax analysis is accomplished by client end; and reducing communication pressure at client end. Based on chatting topic of chatting users, the invention sends correlative ad information so as to prevent interference from not correlative ad information.

The invention discloses a data transmitting system and method, which comprises the following parts: multiple connecting units to build different patterns of connection, data transmitting unit to transmit terminal data of executing terminal, wherein the terminal contains starting unit to trigger to build multiple connections for multiple connection building units separately, selecting unit to build one connection from multiple connections built by building unit to transmit data through data transmitting unit. The invention transmits data from optimum connection of multiple connections according to the character of business data and each connection, which improves the communication quality of connection.

The invention discloses a differential information transmitting method of a satellite navigation satellite navigation receiver and a corresponding receiver. The differential information is used for improving the location or time service precision of the receiver. The method comprises the steps: a step of acquiring the position, acquiring the current position information of the receiver; a step of calculating the distance: calculating the distance between the current position information and a differential reference station; a step of setting transmission frequency: receiving the transmission frequency of the differential information of the receiver according to the distance, and acquiring the differential information according to the transmission frequency. By adopting the technical way, the broadcasting frequency of the differential information can be reduced by the timeliness of GNSS (Global Navigation Satellite System) differential information, the transmission flow of the differential information can be reduced, the communication cost can be reduced, and the communication pressure of a server in a reference station can be greatly reduced.

The invention discloses a railway safety production information management system. Railway line data is stored in a map server; the map server is connected with a Web server and is used for the positioning of vehicle equipment, personnel and construction points; a video server is connected with the Web server and is used for storing uploaded vehicle monitoring or mobile monitoring video files; a database server is connected with the Web server and is used for storing construction and equipment management information; a communication scheduling server is connected between the Web server and a large-scale road maintenance machine and is used for managing and scheduling the data interaction between the large-scale road maintenance machine and the Web server; and a client is connected with the Web server and is used for obtaining map, video and database server data through the Web server. The method provided by the invention is capable of solving the technical problem that the existing public work mechanical section construction production and equipment management depend on manual filling so that standard, safety and instantaneity control cannot be carried out on the plan implementation process and uniform management cannot be carried out on the standing book, dynamic state and fault of the equipment.

The invention provides a map updating method, a map fusion updating method, a terminal and a server, and the map updating method comprises the steps: collecting the terrain information of an operationregion with a changed terrain after the operation is completed; and forming a first vector boundary according to the topographic information, and updating the current map. Aiming at the situation that the terrain is changed after operation, the map is automatically updated by collecting the changed terrain information, and the map updating efficiency is ensured; furthermore, the collected topographic information is uploaded to the server side and is accurately calculated by the server side, the map element increment accurate vector boundary is returned, the map is further updated, and the mapupdating accuracy is improved.

The invention discloses multifunctional integrated detection equipment for a pico-satellite. The integrated detection equipment comprises a wireless communication link module, a wired comprehensive test module, a temperature acquisition and control module, a solar cell simulator interface module, a control module, a data transmission and receiving module and a personal computer (PC) console, wherein the input ends of the wireless communication link module, the wired comprehensive test module, the temperature acquisition and control module and the solar cell simulator interface module are connected with the output end of the control module; the input end of the control module is connected with the output end of the data transmission and receiving module; and the input end of the data transmission and receiving module is connected with the output end of the PC console. The integrated detection equipment integrates the functions of a plurality of pieces of test equipment for the pico-satellite, is used for the control and monitoring of the pico-satellite and test in a pico-satellite research and development stage, and has high extensibility and system upgrading capability, and pico-satellite test data and pico-satellite telemetering data are shared through the Ethernet.

The invention relates to the field of active power distribution network voltage control and particularly discloses an active power distribution network voltage control method and system based on a distributed power supply. The method includes that an upper layer realizes the active power distribution network global voltage control by taking long-time scale economic operation of the active power distribution network as the principle by means of a power distribution network dynamic reconstruction method; the lower layer realizes the active power distribution network local voltage control by taking a feedback automatic voltage regulator and a capacitor as the controlled objects and taking the branch voltage level as the optimization object; and the voltage active control double-layer models coordinate with each other to make a more comprehensive voltage optimization strategy so that the voltage active control of the active power distribution network can be realized. Meanwhile, based on the voltage active control double-layer models, the trend constraint of the upper layer global voltage regulating model is relaxed by means of a second-order cone, the voltage active control double-layer models can be equivalently converted to a single-layer decision model by means of the kuhn-tucker condition, therefore, the model solution complexity is simplified on the basis of guaranteeing the active power distribution network voltage regulating performance, and the algorithm efficiency is improved.

The invention discloses a wireless sensor network ad hoc network method for crop greenhouse cultivation in the technical field of greenhouse cultivation internet of things. A base station sends a clustering command, a hop count relationship among nodes is recorded, the node distribution density is calculated, and clusters are divided; a node receives a control instruction or a state query instruction sent by the base station, and if the node receives the control instruction, real-time monitoring and equipment regulation on the crop greenhouse cultivation growth environment information are executed according to control requirements; if the node receives the state query instruction, the self data packet transmission times are transmitted to the base station; the transmission costs of all paths are analyzed, and the path with the minimum transmission cost is selected as the optimal routing transmission path for data transmission; and after the system completes multiple times of environment information monitoring and regulation tasks, the base station carries out re-clustering according to the state information of the node. The method of the invention is applicable to an isomorphism or isomerism (node hardware isomerism) dynamic elf-organization and multi-hop transmission wireless sensor network ad hoc network.

The invention provides a gateway device. The gateway device comprises a plurality of access modules and routing modules of a data interface, a signaling gathering module and a data forwarding module; the plurality of access modules and routing modules are in interface connection with a base station S1; and the signaling gathering module and the data forwarding module are connected with the routing modules respectively. The gateway device can be connected with a plurality of base stations to gather signaling data of the plurality of base stations based on achievement of a routing function of the signaling data and business data of the plurality of base stations, then signaling data interaction is performed on the gateway device and a core network through a unified signaling link, and only one signaling link is formed between the plurality of base stations and the core network, so that the communication pressure of signaling data on the side of the core network is greatly reduced, the communication congestion is avoided, the communication efficiency is improved, and the communication quality is guaranteed. The invention also provides a base station system comprising the gateway device.

The invention discloses a dynamic information fusing and presenting method based on HTML5 (hypertext markup language 5) high-definition bitmaps. The method employs smooth movement of the high-definition bitmaps, displaying of multiple point positions on the bitmaps, locating of the point positions, real-time displaying of point position information, presentation of an online map by the bitmaps, providing of user interaction events and displaying of information on the bit maps, and solution of online real-time data performance problem by the WebSocket communication protocol. The method includes the steps such as creating a WebSocket service, creating a HTML5 page and server connection, loading a base map, loading hot spots, loading point positions and updating point position information. The method has the advantages that the online map can be presented at low cost, real-time data of corresponding point positions can be presented on the map, online drawing of point positions and hot spots is achieved, and the fact that the server pushes the real-time data to a front end for presentation is also achieved.

The invention provides a loading position area map updating method applied to open pit mine automatic driving. The method comprises: controlling a vehicle to drive into a loading position according toa path planning route; after the vehicle finishes parking at the loading position, controlling the vehicle to drive away from the loading position, collecting point cloud data of a loading position area in the process of driving away from the loading position, and the loading position area being an area with the distance from the boundary of the loading position within a preset range; calculatingan updating vector of a loading position area map boundary based on the point cloud data; and updating the high-precision map of the loading position area by utilizing the updating vector of the mapboundary of the loading position area. The method can adapt to the business scene of loading area high-frequency map boundary updating, and real-time and accurate updating of the loading position areaboundary is achieved.

The invention discloses a distributed w-event differential privacy infinite streaming data distribution method. Through adopting a function monitoring technology based on a geometrical method to assist privacy budget allocation of users, the synchronization distribution of privacy budget among the users can be achieved. Meanwhile, the data distribution scheme of the invention is independent on a credible data centre, and all transmitted data is data containing noise and has higher safety. The invention provides two high available w- event differential privacy distribution schemes which are a dBD scheme and a dBA scheme, and can be flexibly selected according to characteristics of actual data.

The embodiment of the invention discloses a method for sending broadcast multicast data through unicast. The method comprises the steps that a PGW (PDN Gateway) selects an EPS bearer for transmitting broadcast service according to a first session update request sent by a PCRF (Policy and Charging Rules Function); the PGW obtains an IP multicast service address of the broadcast service from a BMSC (Broadcast Multicast Service Centre) and binds the obtained IP multicast service address to the EPS bearer; and the PGW sends a second broadcast service transmission request to an MBMS (Multimedia Broadcast Multicast Service) gateway, so the MBMS gateway sends the broadcast service, the bound EPS bearer is searched according to the IP multicast service address of the broadcast service forwarded by the MBMS gateway, and the broadcast service is transmitted through the EPS bearer. According to the technical scheme, network device resources can be utilized fully, the communication pressure of a GCS (Group Communication Service) application server device is reduced, the complexity and cost of researching and developing the GCS application server device are reduced, and the service quality demand of an application with relatively high timeliness is satisfied.

The invention discloses an active distribution network distributed type reactive power optimization method based on an auxiliary problem principle. The active distribution network distributed type reactive power optimization method comprises the steps of 10), performing initialization: initializing parameters of a partition reactive power optimization model; 20), solving the partition reactive power optimization model; 30), performing boundary variable interaction; and 40), performing convergence determination: determining whether the convergence deviations of all boundary variables are less than a convergence deviation threshold value or not; if so, stopping iteration, and proving that the system achieves a convergence state, enabling each partition to optimize the result for the last time according to the step 20), issuing a reactive power dispatching instruction, and stopping the optimization process; and or otherwise, adding 1 to the number of iteration, and determining whether the maximum number of iteration is achieved or not; if the maximum number of iteration is achieved, outputting non-convergence, and finishing the optimization process, or if the maximum number of iteration is not achieved, returning to perform the step 20). By adoption of the active distribution network distributed type reactive power optimization method, the distributed optimization of the global active power loss can be realized; the global voltage quality can satisfy user requirements; and the reliability of the active distribution network reactive power optimization control is improved.

The invention relates to an integrated processing system for real-time data of electric power based on cloud computing and a designing method. The computing and processing of tristate data can be completely realized by adopting a set of acquisition equipment and a set of distributed cloud storing, a cloud computing and cloud service mode, and respective computing values can be provided for various different application components so as to greatly reduce the number of configurated acquisition units of intelligent equipment; uniform data processing, computing and sharing are actually realized, a conventional functional device is changed into a functional component, the traffic and nodes on external network are effectively reduced, the communication network structure is optimized, and the network communication pressure is reduced, thereby being favorable for improving the system reliability and reducing the installation cost and maintenance expenses of the system.

The invention provides a method and system enabling a WebSocket in a network management system to push alarm information. The method includes the following steps that: the size of a unit time slice and a maximum time slice of alarm information push of the WebSocket is set; with the unit time slice adopted as a current time slice window, alarm information which is received by a network management server and is reported by equipment in the current time slice window is cached, when the current time slice window terminates, the cached alarm information is fused to one piece of information, and the information is pushed to a client through the WebSocket; when the number of the pieces of the alarm information pushed in the current time slice window is monitored, and the number of the pieces of the alarm information pushed in the unit time slice is calculated; and the size of the current time slice window is adjusted in real time according to the number of the pieces of the alarm information pushed in the unit time slice. With the method and system enabling the WebSocket in the network management system to push the alarm information of the invention adopted, the communication pressure of the server and the client end can be decreased, and the real-time performance of the push of the alarm information can be ensured.

The invention discloses a DNS (domain name server) relay method and device. The DNS relay method comprises the following steps of: receiving a DNS request of a user side; recording a domain name and user side information in the DNS request; transmitting the DNS request to a DNS server; receiving an IP (internet protocol) address returned from the DNS server; and returning the IP address to the user side according to the recorded domain name and user side information, wherein the IP address of the DNS server is pre-set in the local. According to the DNS relay method and device, an access gateway of the user side serves as a DNS service device simultaneously, so that the workload for configuring the DNS server is greatly reduced in network topology of large-scale terminal users, and the efficiency of network management is improved; and by virtue of a set user and domain name caching mechanism, network overhead can be effectively reduced, and the communication pressure of gateway equipment can be effectively relieved.

The invention relates to a crossroad and a going-through method of an intelligent magnetic-navigation vehicle. The crossroad is built at the intersection position of multiple cross ways and comprises an annular track, a communication base station and a magnetic track spike, wherein the annular track adopts double lanes and comprises an outer annular road and an inner annular road, the communication base station is arranged at the central part of the inner annular road and is connected with a remote monitoring server, and the magnetic track spike is paved on the surface of the cross way and the annular track; the going-through method comprises the following steps: the magnetic track spike is adopted for encoding to achieve accurate location of the vehicle at the crossroad, and the communication base station is adopted to perform vehicle scheduling and handle emergency stop, so that the intelligent magnetic-navigation vehicle can be smoothly driven in the whole journey. Compared with the prior art, the crossroad and the going-through method of the intelligent magnetic-navigation vehicle have good universality and expansibility and can effectively solve the problems of the start and stop actions of the vehicles and the complex scheduling of the remote monitoring center, and the running efficiency of the intelligent transportation system is greatly improved while the energy is saved.

The invention relates to multi-site bus combination method and device of an electrical vehicle. The invention is characterized in that an Ethernet bus, a CAN bus and an LIN bus are used for forming a multilayered distributed bus system; entertainment equipment with larger communication data volume is mounted on an Ethernet bus layer; electronic equipment with relatively low communication speed and a saddle module are connected to a CAN bus layer; data communication is carried out between the Ethernet bus and the Can bus through a full-vehicle control system; and the data communication is carried out between the CAN bus and the LIN bus through a CAN-LIN gateway. On the basis of meeting the requirement for the construction of a full-vehicle control network of an electrical vehicle, different equipment communication requirements are layered, and the bus advantages of different sites are combined, which guarantees communication requirements, the communication efficiency and the stability of a full-vehicle network system so as to construct a reliable communication network for the multimedia informational development of electrical vehicles.

The invention discloses a railway safety production information management method. A map server stores railway line data, and sends information used for precise positioning of vehicle equipment, personnel and construction points to a Web server at the request thereof. A video server stores vehicle-mounted monitoring or mobile monitoring terminal video files uploaded by the Web server. The Web server stores construction management information and equipment management information in a database server. A communication dispatching server manages and dispatches data interaction between large-sized maintenance machinery and the Web server. A client obtains data in the map server, video server and database server through the Web server. The railway safety production information management method provided by the invention can solve the technical problems that existing public work mechanical segment construction production and equipment management depend on manual filling and reporting, standardization, safety and real-time performance of a plan implementation process cannot be controlled, and an equipment ledger, dynamic state and fault cannot be managed in a unified manner.