23 results about "Synchronous network" patented technology

A self-organizing mesh network system is disclosed, comprising: at least one master node generating a timing reference signal; a plurality of regular nodes deriving time synchronization from the timing reference signal; and a wireless medium for communicating location and timestamp information among the plurality of regular nodes, The plurality of regular nodes may be configured to each use communicated location and timestamp information of nearby nodes to independently generate a location map of the nearby nodes. The plurality of regular nodes may be configured to accept an additional regular node. The plurality of regular nodes may be configured to allow a node of the plurality of regular nodes to exit the plurality of regular nodes. The plurality of regular nodes may each use communicated location and timestamp information of the plurality of regular nodes to independently generate a location map of each of the plurality of regular nodes.

The application relates to the technical field of wireless Mesh networks, and discloses a synchronization method for a wireless Mesh network, wherein the Mesh network comprises a plurality of Mesh network nodes connected to each other, the synchronization method comprises the following steps: obtaining external relative execution time in a Mesh control message received by a Mesh network node; obtaining internal relative execution time saved by the Mesh network node; and correcting the internal relative execution time in the case that the external relative execution time is less than the internal relative execution time. The synchronization operation of the Mesh network node is realized by using the relative time mode, the Mesh network node is clocked by using an internal crystal oscillator, the device of the Mesh network node does not need to quickly re-synchronize the network clock after being powered off and then powered on, and the accuracy of the synchronization operation of the device of the Mesh network node in the Mesh network can be improved. The application further discloses a synchronization device for a wireless Mesh network and an electronic equipment.

Various embodiments are provided for dynamically reconfiguring radio access network (RAN) functionality between edge and cloud computing environments. A RAN-enabled edge server deployed at an edge location is configured to perform a set of distributed unit (DU) functions for a radio-based network, while a server hosted at a regional data center of a cloud provider network is configured to perform a set of core network functions for the radio-based network. The system monitors availability of the core network functions at the edge location and determines that the set of core network functions provided by the server at the regional data center is unavailable. In response to determining that the core network functions are unavailable, the RAN-enabled edge server is dynamically reconfigured to perform the set of core network functions.

The invention discloses a synchronous network model asynchronization implementation method and device and a distributed system, and the method comprises the steps: initiating a service request through a sending thread pool, and recording task context information associated with the request after the request is sent; receiving a request result returned by the three-party server by using a receiving thread pool, performing reverse search in the task context information based on at least part of information carried in the request result, and matching a corresponding to-be-processed task; after successful matching, triggering an asynchronous callback function pre-registered by the user to complete service processing logic; based on a preset timing index structure, the overtime task is cleared, and the timing index structure at least comprises multiple pieces of task information sorted according to the task deadline. According to the invention, on the premise of not depending on underlying network control, asynchronous packaging of the synchronous interface is realized, and the throughput and response timeliness of the system are remarkably improved.

The application provides a DC voltage synchronous network type inverter stability analysis method and system, comprising: establishing a mathematical model of a DC voltage synchronous network type inverter system; determining a transfer function of each link of the DC voltage synchronous network type inverter system; calculating an open loop transfer function of the DC voltage synchronous network type inverter system; calculating state data of the inverter at a steady state working point; calculating a phase angle margin and an amplitude margin of the DC voltage synchronous network type inverter system, and judging the stability of the DC voltage synchronous network type inverter system at the working point; and traversing all working points to judge the global stability of the DC voltage synchronous network type inverter system. The application can be used for analyzing the small disturbance stability of the DC voltage synchronous network type inverter, and particularly analyzing the influence of different grid parameters and control parameters on the stability of the system at a certain working point.

The application discloses an underwater wellhead distributed control system and a control method, relates to the technical field of underwater wellhead control, and comprises the following steps: acquiring real-time monitoring data sets of each control node of an underwater wellhead network, wherein the real-time monitoring data sets comprise wellhead pressure time series data, fluid component concentration data and the like; performing multi-source information fusion verification on the data sets to generate a state characteristic matrix; calling a wellhead cooperative control model for analysis and decision-making to generate a cooperative control instruction set; constructing an underwater space-time synchronization network based on underwater acoustic positioning data and the relative position relationship between nodes to distribute the control instructions; and collecting feedback data sets in the execution process, comparing the feedback data sets with preset targets to generate a control error vector, and performing online adaptive adjustment on the model. The method can realize accurate and synchronous distribution of instructions and dynamic optimization of the model, adapt to complex underwater environments, and guarantee stable operation of the wellhead.

The application discloses an ECG monitoring-oriented SNN learning accelerator, which comprises a register configuration module, an asynchronous global control module, an asynchronous neural network control module, an asynchronous binary classification CNN module, an asynchronous four-classification SNN module, an asynchronous weight update module and a memory management module. Firstly, the accelerator corresponds to a circuit to build a double-layer dynamic network, hierarchical dynamic power management is performed, and a four-classification SNN network of high-precision secondary abnormality detection is selectively activated through a binary classification CNN network of primary abnormality detection. Secondly, the accelerator supports on-chip reasoning and efficient learning, effectively eliminates the ECG feature differences of different individuals under the premise of guaranteeing the privacy and security of user data. Finally, the circuit uses a pulse neural network and an asynchronous logic circuit for control, and the power consumption is greatly reduced compared with a synchronous network.

The invention discloses a transient stability analysis method for a direct-current bus voltage synchronous grid-forming type converter, relates to the technical field of power electronics, and solves the problem that real-time changes of inertia and potential along with frequency in a converter cannot be accurately described due to constant parameters of an existing transient stability analysis method for the grid-forming type converter. According to the method, nonlinear characteristics of variable inertia and variable internal potential are completely fused into an energy conservation framework for the first time, then explicit expressions of kinetic energy, potential energy and damping work are analyzed and derived, and then an implicit stability boundary equation is solved by adopting an iterative algorithm; by fully utilizing the negative feedback convergence characteristic that the frequency-dependent inertia coefficient and the frequency-dependent internal potential are updated along with the state variable, the accurate capture of the critical stable frequency distribution function is realized. According to the method, constant parameter hypothesis limitation is broken through, the deviation between the theoretical evaluation result and the actual stability boundary of the system is reduced, the analysis precision is improved, and a quantifiable theoretical basis is provided for parameter optimization and robust design of the network-forming converter.

In some implementations, a device may create a cluster of network functions from a plurality of network functions in a wireless network, wherein the cluster of network functions includes one or more network functions that are associated with a same network functionality. The device may modify one or more thresholds associated with the cluster of network functions, wherein each network function in the cluster of network functions is associated with a respective threshold of the one or more thresholds. The device may synchronize one or more configurations between the one or more network functions in the cluster of network functions.

The application discloses a kind of time synchronization network performance optimization method, device, equipment and medium, the method is applied to synchronous network probe monitoring system, comprising the following steps: when time synchronization network performance appears deterioration fault, probe equipment reports time synchronization network performance deterioration fault information to probe network management equipment;Probe network management equipment prompts operation and maintenance personnel to carry out fault maintenance to fault position, and issues first switching instruction to probe equipment, and probe equipment is switched from measurement mode to time source mode according to first switching instruction;Probe network management equipment receives fault solution receipt, then issues second switching instruction to probe equipment, and probe equipment is switched from time source mode to measurement mode according to second switching instruction;Probe equipment continues to measure and obtains the time synchronization network performance of access equipment, to complete the optimization of time synchronization network performance.The method can realize the automation and reliability of synchronous network fault root location process.

The invention provides a fault tolerance method and system for a clock synchronization network, the clock synchronization network and a computer readable storage medium. The clock synchronization network comprises at least two compression hosts and a plurality of synchronization hosts, the compression hosts comprise a main compression host and a standby compression host, and the fault tolerance method of the clock synchronization network comprises the following steps: responding to the situation that the main compression host cannot operate normally; starting a fault-tolerant function of the standby compression host to determine a local clock of the standby compression host in the integration period, and correcting local clocks of the plurality of synchronization hosts according to the local clock of the standby compression host to realize clock fault-tolerant synchronization in the integration period; and responding to normal operation or successful restarting of the main compression host, starting a fault-tolerant function of the main compression host to determine a local clock of the main compression host in the integration period, and correcting local clocks of the standby compression host and the plurality of synchronization hosts according to the local clock of the main compression host to realize clock fault-tolerant synchronization in the integration period.

The embodiment of the invention relates to the field of network communication, and provides a time synchronization optimization method and system based on nearest K-neighbor network topology, and the method comprises the steps: carrying out the clustering processing of to-be-synchronized network nodes in a to-be-synchronized network node set, and obtaining S first network node sets; reconstructing the original network topology of the first network nodes in the S first network node sets according to K adjacent intra-group communication rules to obtain a first network topology; performing time synchronization on a first network node in the first network topology to obtain a target network topology; the accuracy of performing time synchronization on the to-be-synchronized network nodes in the to-be-synchronized network node set is improved.

The invention provides a network boundary security protection system and method based on a national cryptographic algorithm, and the system solves the problems that one-way authentication is liable to be attacked by a man-in-the-middle and a non-national cryptographic algorithm is not compliant through bidirectional identity authentication and an encryption transmission channel of a national cryptographic authentication gateway. In addition, the national cryptographic authentication gateway synchronizes the network flow and the terminal identity information to the national cryptographic firewall, so that the coarse-grained control defect that the traditional firewall is easily counterfeited is overcome. The firewall takes a trusted identity as a decision core, illegally used traffic is intercepted, and the risk of illegal breakthrough is reduced. And finally, the national secret depth detection module is linked with the intelligent strategy module, so that the problem of response lag caused by disjunction of detection and a strategy is solved. A dynamic instruction is triggered in real time according to a detection result, threat traffic is automatically blocked, a violation certificate is revoked, threat closed-loop protection is achieved, and the problems that a protection system is insufficient in national cryptographic algorithm adaptability, and compliance and autonomous controllable requirements are difficult to meet are solved.

The application discloses a wireless sensor network synchronous acquisition method for structural health monitoring, comprising the following steps: constructing a tree-shaped synchronous network based on signal strength and hop count; performing bidirectional time exchange by using a physical layer frame start delimiter capture function to eliminate interruption delay; monitoring and dynamically compensating crystal oscillator frequency drift in real time by using a temperature sensor; adaptively adjusting a synchronous period according to structural vibration amplitude and temperature change rate; automatically performing fast resynchronization and route repair when a node is out of step or a link is deteriorated; and performing time stamp checking and quality calibration on collected data. The application realizes microsecond-level synchronization accuracy, greatly reduces power consumption, has an abnormal self-healing capability, and is suitable for long-term unattended health monitoring of infrastructures such as bridges and high-rise buildings.

The invention relates to the technical field of electric power measurement, and particularly discloses a multi-device synchronous automatic verification method based on a standard time source, which comprises the following steps of: establishing a distributed verification system consisting of a hardware component and a synchronous network, monitoring the synchronous network in real time to generate a network state diagram, and adopting an optimal master clock optimization algorithm to verify the network state diagram; the main clock device receives a standard time source to realize multi-device synchronous acquisition, measurement data is obtained, whether to trigger switching of the main clock device or not is periodically judged, whether network partitioning occurs or not is judged, if yes, partition main clock devices are elected for independent partitions, and if not, partition main clock devices are selected for independent partitions; and if the electric energy meter is not in the partition time period, performing time alignment on the measurement data to intercept a standard time slice, executing data validity verification, screening an effective data set, calculating a relative error of the detected electric energy meter, and completing automatic verification.

The invention relates to a data recovery method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining first configuration information when a process of a virtual gateway proxy is restarted, responding to the first configuration information to indicate that network configuration data is not synchronized from a remote server in a full-amount mode, detecting the availability of a local cache file, responding to the fact that the local cache file is determined to meet an available condition, and transmitting the network configuration data to the virtual gateway proxy. And loading the network configuration data in the local cache file. Compared with the prior art, according to the embodiment of the invention, when the process of the virtual gateway agent is restarted, the first configuration information is acquired, and under the condition that the first configuration information indicates incomplete synchronization, efficient local recovery is preferentially tried to solve the problem of slow starting, and meanwhile, through preposed availability detection and local loading recovery, the starting speed of the virtual gateway agent is improved. The starting performance of the virtual gateway agent can be improved, and the data consistency is ensured, so that the reliability is ensured.

The invention discloses a backup device and method for a satellite-borne router, and relates to the technical field of satellite communication. Comprising a host system, a standby system and a shared Flash, the host system and the standby system operate independently, and the shared Flash is accessed in parallel through an interface; the host system is used for synchronizing key data to the shared Flash at regular time; and the standby system is used for taking over the shared Flash when the host system is in an abnormal state, performing state synchronization by using data in the shared Flash, and synchronizing key data to the shared Flash regularly after network convergence. The method and the device are used for solving the problems of service interruption and satellite failure caused by router faults in satellite communication.

The invention discloses a parameter optimization design method for a direct-current voltage synchronous network-building type converter and a related device, and relates to the technical field of power electronics. The method comprises the following steps: establishing a second-order nonlinear mathematical model for accessing a GFMC to a weak power grid based on a DVSC; based on an equal area criterion and an energy conservation law, deriving analytical expressions of kinetic energy, potential energy and damping work of the system; solving a transient stability boundary through an iteration method, and calculating a critical clearance angle and time; by taking the critical clearing time as an index, analyzing the influence of key parameters such as direct current capacitance, a voltage reference value and control gain on transient stability; parameter configuration is optimized according to the working conditions of power grid voltage drop and input power abrupt change. Experimental verification shows that the transient stability of the direct-current voltage synchronous network-constructing converter can be remarkably improved by the method.

The invention relates to the technical field of electronic game development, and provides a network synchronization method, system and equipment for objects carried by a game mobile platform. The synchronization method comprises the steps that player equipment responds to a trigger event of a target moving body to a moving platform, and moving body information corresponding to the target moving body is recorded; based on a preset local judgment rule and the moving body information corresponding to the target moving body, screening the target moving body to obtain a carrying moving body; modifying the moving body information carrying the moving body, and generating synchronization information based on the modified moving body information; and transmitting the synchronization information to the associated player equipment through the synchronization network. According to the technical scheme, due to the fact that collection and screening of the moving bodies and generation of the synchronization information are achieved through the player devices, and the synchronization information is synchronized to the associated player devices, collision processing tasks originally concentrated in a host can be dispersed to the player devices, the network burden can be relieved, and the user experience is improved. And the timeliness of information synchronization is improved.

Systems and methods for providing provenance authentication of content. C2PA and other open standards for provenance metadata and watermarking can be used in combination to enable social media platforms to easily identify and retrieve from video servers authentic instances of broadcast video content that is included in user-generated videos. Gaps in these standards that could impede interoperability are addressed by providing protocols that for discovery, launch, and synchronization of network services, such as C2PA, via watermarking. For example, a method is provided for announcement of C2PA services in ATSC watermark protocols. Also, guidelines are disclosed for the interpretation and use of the C2PA asset reference assertion field and expectations around video encoding formats, video server features, and access controls that are necessary for its effective use in promoting availability of authentic video.

The invention relates to the technical field of electric power system control, in particular to a modularized parallel operation control system and method for a network construction SVG (Static Var Generator), which is characterized in that multi-dimensional power grid state information is acquired through a power grid state sensing module, and virtual impedance remodeling is realized through an autonomous synchronous network construction module; a dynamic current-sharing decision module is adopted to generate an optimal power distribution strategy based on a non-cooperative game algorithm, a hierarchical control architecture is established through a multi-time scale coordination module, boundary condition verification is performed in combination with a digital twin verification module, reliable instruction transmission is realized by utilizing a semantic communication module, and finally closed-loop control is formed through an execution feedback module. The system realizes a technical breakthrough from dependence on central control to autonomous cooperative operation, and the synchronization precision, the circulating current suppression capability and the system reliability are remarkably improved.