48 results about "Frame (networking)" patented technology

The invention provides a 2.4 GHz wireless remote control method and device based on hardware code matching, and relates to the technical field of wireless remote control. The present invention is applied to control communication between at least one transmitting end and at least one receiving end. The group identifier and the role information are analyzed by reading the hardware address setter to realize rapid networking; generating a session key and establishing a secure session according to the pre-shared root key in a handshake stage; a sending end collects man-machine input data to form a control frame, and the control frame is sent according to a token rotation or time slice distribution mechanism after encryption and message authentication; and the receiving end drives the controlled object and returns feedback data after completing verification and decryption. The system adaptively adjusts communication parameters according to feedback information and a channel state, so that secure, stable and intelligent control of multi-terminal wireless remote control is realized.

The application discloses a kind of comprehensive electronic system 5G hybrid networking performance simulation platform, is set based on the gateway module of 5G communication between 5G communication network module and avionics AFDX network module.Gateway module based on 5G communication is composed of frame format conversion unit (10), priority type setting unit (20), address conversion unit (30) and AFDX network message analysis module (40).Gateway module based on 5G communication one side will 5G protocol information (1) transmission in avionics AFDX network module, the other side will avionics AFDX network module AFDX protocol information (2) restore as 5G network information.5G network message is converted in gateway module, one side can 5G information lossless transmission in avionics AFDX network, the other side can according to network topology and restore avionics AFDX information as 5G network information, to solve the problem that two networks cannot be compatible with each other, provide simulation platform for solving the problem that the size, weight and power consumption of airborne network caused by wired cable in avionics AFDX network.

The invention provides a frame structure determination method and device, electronic equipment, a storage medium and a program product. The frame structure determination method comprises the following steps: determining a first parameter based on a first sensing demand and a first index; the first parameter is used for enabling a second index corresponding to the first sensing demand to meet the first index; determining the number of pulse waves based on the first parameter and the networking mode; a frame structure is determined based on the number of pulse waves. In conclusion, by adjusting the first parameter capable of meeting the sensing requirement, the number of the pulse waves can be accurately determined by combining the first parameter with the networking mode corresponding to the target scene, and then the frame structure adapting to the specific sensing requirement in the target scene is constructed. According to the mode, the communication and sensing integrated system can be flexibly adjusted according to actual communication and different sensing requirements in an application scene, the defects of an existing fixed communication and sensing frame structure are overcome, the wide adaptability of the system is greatly improved, and actual objective requirements can be met.

The application provides a vehicle networking fairness transmission method based on convex optimization and reinforcement learning, and belongs to the technical field of vehicle networking and data transmission. The technical scheme is as follows: S1: an improved confirmation ACK frame and a data DATA frame are designed to realize hidden node detection; S2: mathematical modeling of the transmission fairness problem; S3: fairness transmission based on convex optimization and reinforcement learning. The application effectively discovers hidden nodes, alleviates transmission conflicts caused by hidden nodes by improving the transmission power and the 'continuation' field of the data frame DATA, and finally improves the throughput; the reinforcement learning and convex optimization method are used to jointly optimize the transmission strategy, solve the minimization problem of the difference between the transmission data amounts of fast and slow vehicles, and improve the data fairness of vehicle networking transmission.

The invention relates to the technical field of digital information transmission, and discloses an industrial heterogeneous network multi-protocol fusion networking and communication system, which comprises a heterogeneous access and semantic classification engine used for analyzing a native data identifier to determine an industrial service grade and dynamically redirecting the grade according to a system state context; the multi-dimensional dynamic queue manager is used for isolating the data frames to the virtual channel queues according to levels and monitoring the queue depth to generate priority-based flow control pause signals; according to the invention, the semantic blindness of a transmission layer is solved at a gateway entrance, and a deterministic transmission channel which is free from non-real-time data flow blocking is provided for key real-time data through mechanism coupling of industrial semantic perception and strict priority scheduling.

The utility model relates to remote monitoring control technical field discloses a kind of remote monitoring control device for EIGA equipment, including total data processing mechanism, the end of total data processing mechanism is provided with probe mechanism, the probe mechanism includes frame component, the surface of frame component is connected with the end of total data processing mechanism, the inside of frame component is provided with self-cleaning component, the self-cleaning component includes outer extension cylinder, the surface of outer extension cylinder is provided with air hole, the inner wall of air hole is fixedly connected with dust baffle, the outer surface of outer extension cylinder is fixedly connected with helical rib, the inner wall of outer extension cylinder is rotatably connected with baffle. In the utility model, self-cleaning design reduces the interference of dust to monitoring, without disassembly cleaning, the layout of multiple probe multiple type monitoring element realizes multi-region multidimensional synchronous monitoring, hierarchical data processing and transmission mode according to demand networking, reduce data transmission volume and total control operation pressure.

The application relates to a vehicle networking intrusion detection method and system based on a mask strip convolution autoencoder, which comprises the following steps: converting payload bytes of continuous CAN data frames into a CAN payload grayscale image; generating a block level, frame level or continuous frame mask area and filling the same by using an information amount guided multi-mode mask generator; inputting the mask input image into a mask strip convolution autoencoder for self-supervised reconstruction training; the encoder extracts local byte disturbance, time direction continuous change and cross-field interframe coupling features through a strip convolution module facing the CAN frame structure; calculating a reconstruction loss taking the masked area as a main object and updating parameters; removing the decoder after training, retaining the encoder and connecting a lightweight classification head; and outputting an intrusion detection result by the encoder and the classification head in the deployment stage; the application reduces the dependence on labeled data, enhances the robustness to frame loss, noise and continuous abnormal injection, and meets the lightweight deployment requirements of a vehicle-mounted edge device.

A method to establish an optimized frame format used by a first compute node (21) acting as ingress PE and a second compute node (22) acting as egress PE in the transport of overlay ethernet traffic containing an IP payload from the source overlay endpoint attached to or hosted in the first compute node (21) to the destination overlay endpoint attached to or hosted in the second compute node (22) through a Multi Protocol Label Switching, MPLS, underlay network (2), where the frame format is a conventional MPLS tagged ethernet frame format, wherein an MPLS label stack is inserted between the ethernet header and the IP header of the overlay ethernet frame, where the single ethernet header carries the destination and source overlay Media Access Control, MAC, addresses when the frame was originated from the source overlay endpoint, where the MPLS header of the frame comprises a top label with the Label Switch Path, LSP, label towards the destination Provider Edge, PE, router, ie. egress PE, and a bottom label, e.g. an optimization MPLS label, holding information enabling the forwarding mechanism in the egress PE router to restore the original destination and source overlay MAC addresses.

The embodiment of the invention discloses an open-loop uplink synchronization method and device, equipment and a storage medium. The method comprises the following steps: calculating an uplink frame number based on UTC time and a preset unified mapping rule, and calculating a starting moment of an uplink frame based on the uplink frame number; receiving a downlink broadcast message, obtaining feeder link public time delay and ephemeris data from the downlink broadcast message, and calculating the distance between a user terminal and a satellite based on the ephemeris data to calculate service link time delay; the feeder link public time delay and the service link time delay are both unidirectional time delays, obtaining a fine tuning value from the MAC CE command, and calculating an uplink lead in combination with the feeder link public time delay and the service link time delay; and determining an uplink moment according to the starting moment and the uplink advance, and sending an uplink frame at the uplink moment. According to the method, on the basis of not depending on downlink signal detection synchronization, through mapping of global time and estimation and compensation of one-way propagation time delay, synchronization of uplink signals is independently achieved, and decoupling of uplink and downlink networking of the heterogeneous wireless technology is achieved.

The embodiment of the invention provides an audio data transmission method and system, a chip, networking, a storage medium and a program product. The method is used for a first node in a plurality of networking nodes, the plurality of nodes further comprise other nodes except the first node, the clock frequency of the first node is different from the clock frequency of a sound source, and the method comprises the following steps: caching audio data from the sound source through a first cache unit; after the audio data of the ith data frame is read from the first cache unit, the data frame interval between the ith data frame and the (i + 1) th data frame is determined based on the first data size of the audio data cached in the first cache unit, and i is a positive integer; and after the data frame interval is ended, reading the audio data of the (i + 1) th data frame from the first cache unit, and transmitting the audio data of the (i + 1) th data frame to the corresponding node in the other nodes through the networking.

The application discloses a time slot allocation method and device, equipment and medium, and relates to the field of time slot allocation. The method comprises the following steps: an unmanned system generates a backbone network based on network topology information of a plurality of communication nodes in a previous time frame through a center node, so as to dynamically determine backbone nodes of a current time frame by using the backbone network; the center node dynamically predicts time slot segments allocated to the center node and the backbone nodes in the current time frame based on traffic demands of the plurality of communication nodes in the previous time frame; and each node in the center node and the backbone nodes dynamically predicts time slots allocated to each node and management sub-nodes of each node in a time slot segment corresponding to each node based on traffic demands of each node and the management sub-nodes of each node in the previous time frame, so as to meet the networking communication demand of the unmanned system with high reliability and low delay, better adapt to the non-stationary environment with strong business burstiness and frequent topology changes of the unmanned system, and realize efficient and reliable time slot allocation for large-scale unmanned system networking.

This invention discloses an AFDX switching system supporting standard Ethernet bridging, comprising: an ARINC664 / ETH converged receiving module, an AFDX switch control module, a virtual link aggregation module, a redundant network management and deduplication module, a high-speed cross-matrix routing module, and an ARINC664 / ETH protocol encapsulation and transmission module. This system achieves efficient switching within the AFDX network and transparent bridging switching with standard Ethernet by performing ARINC664 / ETH protocol message fusion extraction, virtual link bandwidth management, redundant frame arbitration and filtering, virtual link-based cross-matrix routing, and cross-ARINC664 / ETH protocol fusion encapsulation and transmission. While ensuring the deterministic service characteristics of the AFDX network, this system features high bandwidth, low latency, and flexible access, improving the networking quality of airborne heterogeneous networks.

This invention provides a device collaborative control method, device, and apparatus based on time-sensitive networking (TSN), belonging to the field of industrial automation control and communication network technology. The method includes: constructing a three-level TSN architecture consisting of a central control layer, a regional access layer, and a device terminal layer; using a TSN protocol and a central controller as the main clock source, performing time synchronization among all nodes in the three-level TSN network; dividing the network communication cycle into multiple time slots, and allocating dedicated deterministic transmission windows for service traffic of different priorities through the gated list control of the TSN access switch; performing frame duplication operations on key control commands to generate at least two identical data frames; and transmitting the duplicated data frames in parallel to the target device terminal through different physical links. The target device terminal receives and eliminates redundant frames before executing the command. This method solves the problem of low accuracy in device collaborative control based on TSN.

The application discloses a kind of low-orbit constellation time-sensitive service span transmission methods, comprising the following steps: in the low-orbit constellation based on laser interconnection, obtain each satellite IP address and laser connection information table;Each satellite node carries out adjacent satellite connection initialization and plans route, according to traffic weight and strongly connected algorithm carries out sketch, and the whole satellite constellation is divided into several parallel subnets;According to the VLAN label that traffic transmission time source node is arranged on data packet frame header, carry out fast arrangement;High priority time-sensitive service is exported by two controllable doors of periodic exchange opening and closing;Finally, according to the traffic re-planning route, the cross long-distance connection of time-sensitive service is realized.According to the low-orbit constellation time-sensitive service span transmission method of the application, the situation that time-sensitive service transmission delay is too high and uncontrollable caused by congestion that appears when transmitting traffic under parallel subnet structure is optimized, and the result of time-sensitive service transmission meets controllable, predictable and low-delay conditions.

A queue management system (including but not limited to active queue management systems, traditional networks, and / or software-defined networking), method, computer program product, or integrated circuit that selectively manages flows based on methods for how the data of the flows have been encoded (such as FEC and / or compression) and / or characteristics of the flows (including but not limited to loss-recovery capabilities). Similarly, an encoder system, method, computer program product, or integrated circuit can make encoding decisions based on known and / or anticipated queue management policy (e.g., an FEC encoder may be configured to make frame splitting, parity symbol allocation, and / or packetization decisions based on known and / or anticipated queue management policy, and a data compressor may be configured to make data compression decisions based on known and / or anticipated queue management policy).

This invention relates to a tree-structured wireless communication network and a complete signaling method, belonging to the field of wireless communication networking technology. It constructs a wireless communication network based on a combination of explicit tree and implicit mesh structures, clearly defining the dedicated wireless communication frame structure and the specific parameters and functions of its synchronization and broadcast channels SYNC / BCCH, grant channel AGCH, and indication channel indCH. Different node devices in the system use independent operating frequencies. The wireless resources of each node device are divided into local resources and relay forwarding resources: local resources are used to provide access services for mobile terminals residing at the node, and relay forwarding resources are used to forward data from lower-level child nodes. The invention also defines the tree-structured networking process, the calling party communication process, the called party communication process, and the inter-node measurement and terminal handover process, forming a complete networking and communication solution.

The invention relates to a time-sensitive network routing and scheduling method based on a conflict graph, and belongs to the technical field of industrial automation communication. The method comprises the following steps: firstly, reading network topology, node processing delay, traffic period, traffic frame length, source node and destination node information, and carrying out initialization representation on the TSN network topology; then, according to the configuration information of the data flow and the network topology, generating candidate paths meeting delay, bandwidth and load balancing constraints; then, establishing a conflict graph by taking the configuration of routing and phase and the color as vertexes and taking the space-time conflict of any frame in a period on any shared link as an edge; and solving the maximum independent polychromatic set in the conflict graph, namely, distributing proper transmission starting time for each flow in the network. According to the method, the scheduling constraint is mapped into the conflict graph, and the independent set solving algorithm is combined, so that a rapid and low-memory-occupation scheduling scheme is generated, the link utilization rate and the system adaptability are improved, and meanwhile, strict delay and bandwidth constraints are met.

The invention provides a universal private information interaction method and device of an OMCI protocol. Through application of the method and the device, in the optical access network, the attribute access type management message forwarded by the network passes through the entity identifier Entity ID field and the entity identifier Entity ID field, so that the Class ID resource consumption is reduced, the development and maintenance cost is reduced, private message interference of different manufacturers is avoided, and the safety and compatibility of a hybrid networking environment are improved; as T-L-V carrying function parameters do not need to be used, the transmission efficiency of the OMCI Baseline frame is improved, and extra overhead is reduced. The method and the device can be further applied to interaction between the FTTR master device and the slave device and interaction between the FTTR master device and the OLT device.

A device network configuration method and a first device are provided. The method is performed by the first device. The first device interacts with a second device through n management frames, at least one of the n management frames includes a vendor specific field, and the n is a positive integer. The method includes: broadcasting a first management frame without disconnecting a current communication connection, a vendor specific field of the first management frame carrying networking information of a first network, the networking information of the first network being configured to configure the second device to access the first network.

A communication method and device. In the method, a CCO generates and sends a first beacon frame, wherein the first beacon frame includes indication information of a first CSMA time slot, the time slot indication information of the first CSMA includes type indication information, and the type indication information is used to indicate whether the first CSMA time slot can be used to transmit a first type of physical layer frame (i.e. a physical layer frame defined in a new protocol version). Nodes supporting the first type and nodes supporting a second type (i.e. an old protocol version) can determine whether to compete for the channel in the first CSMA time slot according to the indication of the first beacon frame, avoiding the possibility that nodes not supporting the first type may occur data conflict in the first CSMA time slot due to the inability to correctly parse the first type of physical layer frame sent by other nodes, thereby realizing that new and old protocol nodes can be mixed in networking without upgrading all nodes in the network to support the first type, wasting manpower and resources.

The present application relates to the field of industrial wireless communication and automation control, in particular to a multi-master-slave multi-listening weighing communication networking method and system, comprising: obtaining data load to be distributed, generating a mixed broadcast frame with specific transmission permission indication; opening a preset time length instruction receiving window; extracting the dynamic authorization token field and the local identifier for matching verification; in response to the dynamic authorization token field matching the local identifier, and there being a to-be-sent instruction in the instruction cache queue of the slave communication node, triggering the uplink instruction transmission process after a preset radio frequency protection time gap; in response to the dynamic authorization token field not matching the local identifier, or the instruction cache queue being empty, the slave communication node maintains a radio frequency transmission silent state within the instruction receiving window; the present application effectively solves the hidden terminal problem in the wireless network, reduces the physical layer collision probability to zero, and significantly improves the communication link robustness in a complex electromagnetic environment.

The application discloses a data transmission method, a nonvolatile storage medium and a computer device. The method comprises the following steps: receiving a first target frame sent by a first device, wherein the first target frame carries target data, the first device is located on a path for transmitting the target data, and the first device belongs to a slice packet network or an optical transport network; modifying a field included in the first target frame to obtain a second target frame corresponding to an intermediate device, wherein the intermediate device is located between the first device and a second device, the second device is located on the path for transmitting the target data, the second target frame carries the target data, the second device belongs to the slice packet network or the optical transport network, and the first device and the second device belong to different networks; and sending the second target frame to the second device to forward the target data from the first device to the second device. The application solves the technical problem that a long transmission time is required when data is transmitted in a transmission path formed by combining multiple networking modes.

The application relates to the technical field of communication networking, and discloses a self-organizing network implementation method of an air-ground joint interference system and related equipment, which is used for ensuring that each node in wireless communication mutually transmits and receives data under strict timing, avoiding conflict caused by simultaneous sending of services of multiple nodes in the communication process, and improving channel utilization. The method comprises the following steps: receiving, at any node of a self-organizing network, data to be processed from an upper-layer data interface, analyzing the data to be processed, and extracting information in data packets and control packets in the data to be processed; processing the information based on a TDMA MAC protocol and a TDMA frame structure design to obtain a target frame; obtaining the sending data volume of a plurality of nodes in the self-organizing network, configuring the timing of each node according to the sending data volume, and controlling each node to send part or all of the information in the target frame according to the corresponding timing.

A queue management system (including but not limited to active queue management systems, traditional networks, and / or software-defined networking), method, computer program product, or integrated circuit that selectively manages flows based on methods for how the data of the flows have been encoded (such as FEC and / or compression) and / or characteristics of the flows (including but not limited to loss-recovery capabilities). Similarly, an encoder system, method, computer program product, or integrated circuit can make encoding decisions based on known and / or anticipated queue management policy (e.g., an FEC encoder may be configured to make frame splitting, parity symbol allocation, and / or packetization decisions based on known and / or anticipated queue management policy, and a data compressor may be configured to make data compression decisions based on known and / or anticipated queue management policy).

Some aspects of the present disclosure relate to an integrated-circuit (IC) microcontroller (MCU) having a debug subsystem, a classifier module, and a network port. The debug system is configured to generate trace data in response to a trace trigger and provide the generated trace data to the classifier. The network port is configured to: receive network frames in accordance with a time-sensitive packet-switched networking protocol, encapsulate received payloads to generate network frames in accordance with the time-sensitive packet-switched networking protocol, transmit the generated network frames in accordance with the time-sensitive packet-switched networking protocol, generate timing information in accordance with the time-sensitive packet-switched networking protocol, and provide the timing information to the classifier. The classifier is configured to generate trace-data payloads based on the received trace data and the received timing information and provide the generated trace-data payloads to the network port.

The present application relates to the technical field of power system, specifically to a simulation isolated substation remote control target equipment checking method, comprising receiving a remote control message, extracting a frame start identifier, an ASDU type identifier and an application identifier to construct a protocol feature vector, the method extracts a pre-training classification model through the protocol feature vector, realizes the automatic identification and unified analysis of IEC60870-5-103 / 104 and IEC61850 multi-protocol, and solves the mixed networking acceptance problem; with the help of virtual equipment model normalization heterogeneous operation, combined with state transition path modeling and dynamic time warping algorithm, the quantitative evaluation of remote control timing logic is realized, and the timing error that cannot be found by traditional static checking is accurately identified. At the same time, the logic isolation and simulation feedback mechanism ensures the safe verification without power failure, and the context association verification of the logic topology graph ensures that the logical association configuration error between devices can be found, forming a full-dimensional verification system of target correctness, timing consistency and logical association, and improving the systematicness and reliability of acceptance.

The application discloses an adaptive unmanned cluster MAC layer hybrid networking method, and belongs to the wireless communication technical field. The application solves the problems that the existing method is difficult to adapt to the dynamic change of the node quantity, the time slot is difficult to allocate when the node quantity is large, and congestion conflict and channel resource waste are easily generated frequently when the communication traffic of part of nodes is large. The application designs a protocol frame structure, a part of time slots in the protocol frame structure is designed as a dynamic competition window, and the other part of time slots is set as fixed time slots. In the initialization stage, the node accesses the network through the competition window, and the priority of the accessed node is allocated, the priority is dynamically adjusted according to the network congestion degree of the node in the network running process, the high-priority node can be allocated to the fixed time slot and has higher competition priority in the competition window, and the low-priority node participates in the time slot competition in the competition window, and then the business data receiving and transmitting are carried out after the competition is successful. The method can be applied to the wireless communication technical field.

This invention provides a circular queuing and forwarding method based on shadow queues to absorb time variations, relating to the field of time-sensitive networking technology. The method includes: S1, filtering data frames that meet real-time service conditions; S2, combining the arrival time of the data frame, the global synchronization clock, and the period offset, controlling the gating time window opening and closing state of the sub-queue to be delayed relative to the main circular queue, and selecting a target queue to receive the data frame; S3, generating period tags for the data frames in each target queue; and S4, sending the data frame based on the period tags. This invention, based on the circular queuing and forwarding mechanism, introduces a shadow queue composed of two sub-queues, and sets the gating time window opening and closing state of the sub-queue to be delayed relative to the main circular queue. This allows the sub-queue to receive delayed data frames and catch up with normally arriving data frames when sending data frames, thus ensuring that the data stream is transmitted within a precise time period.

The single carrier high-precision two-way ranging method based on orthogonal waveform design belongs to the field of communication signal processing.The method of the present application is as follows: in the scene where the frequency spectrum and hardware implementation resources are strongly limited, a UAV node generates information according to a ranging frame structure.The frame structure comprises a pilot head, a frame synchronization head, a control field, ranging information, inertial navigation and dynamic information, and other redundant information. By using coherent pilots orthogonal to communication signals, combined with a two-way comparison algorithm and pilot phase discrimination, high-precision and low-processing-delay networking ranging is realized.The present application has the following advantages: (1) the orthogonal waveform is used to save spectrum resources without affecting the communication and ranging performance; (2) on the basis of simple pseudo-code ranging, the ranging result is corrected by using the phase discrimination method, which significantly improves the ranging accuracy and has low processing complexity and processing delay; (3) combined with the expandable two-way comparison strategy, networking ranging of large-scale UAV clusters is realized.