94 results about "Frame (networking)" patented technology

The invention provides an Internet of Vehicles broadcast frame radio frequency fingerprint identification method based on LMMSE channel estimation. The method comprises the following steps: obtaining subcarrier data in a resource grid based on an obtained signal of a physical side link broadcast channel; performing root-mean-square delay expansion and channel autocorrelation matrix construction based on the subcarrier data, and combining priori signal-to-noise ratio regularization and time domain windowing operation to obtain a channel estimation value; initial radio frequency fingerprint features are obtained through the channel equalization and the channel estimation value, and the improved neural network and the initial radio frequency fingerprint features are utilized to carry out classification identification on the Internet of Vehicles equipment. Influences of noise and channels on fingerprints are effectively considered, and the purpose of extracting fingerprints of different devices in a complex environment more accurately is achieved.

The invention discloses a video transmission and grading early warning method based on 5G and Wi-Fi hybrid networking, and relates to the technical field of network transmission and safety monitoring, and the method comprises the steps: firstly deploying fusion anchor points containing three types of core hardware modules, and determining the number of the fusion anchor points; extracting service time delay and bandwidth demand grades in an XR scene, establishing a QoS parameter mapping relation between 5G and Wi-Fi, and reading key parameters through a fusion anchor point to dynamically allocate bandwidths; based on the parameter matrix and the weight matrix, determining a sampling interval and marking a sampling frame; and finally, evaluating a sampling frame threat parameter and executing hierarchical response. According to the invention, while the collaboration of hybrid networking is improved, the accuracy of threat assessment is improved, and the continuity and security of video transmission in an XR scene are ensured.

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 invention provides a wireless local area network networking time service method and system, and relates to the technical field of wireless communication, and the method comprises the steps: constructing a target wireless frame carrying timestamp information according to a preset time service rule, adding the timestamp information to a corresponding bit in a signaling field based on physical layer hardware to obtain a target signaling field; based on the target signaling field, constructing the target wireless frame; and sending the target wireless frame to a receiving end. According to the method, the uncertainty caused by software processing time is reduced, the time synchronization precision is improved, and the network communication reliability is enhanced.

The present disclosure relates to the technical field of wireless network networking, and discloses a networking access method, a networking access point, a networking terminal device and a networking architecture, the method comprising: when a service of a first networking terminal device arrives at a queue and a resource unit is occupied, sending a trigger frame to a second networking terminal device occupying the resource unit, sending the resource unit to the second networking terminal device so that the second networking terminal device releases the resource unit; wherein the service priority of the first networking terminal equipment is greater than that of the second networking terminal equipment; the released resource units are allocated to the first networking terminal equipment; and performing resource unit compensation on the second networking terminal device which releases the resource unit in the current scheduling period in the next scheduling period. According to the method and the device, resource unit preemption during burst traffic overload of the uplink service is realized by expanding the trigger frame, and dynamic allocation of the resource units is achieved, so that priority forwarding of the high-priority service is realized.

An information indication method in wireless local area networking (WLAN) sensing includes: a station (STA) transmits a sensing by proxy (SBP) request frame to request an access point (AP) to serve as a proxy of the STA to perform sensing measurement, where the SBP request frame carries indication information that indicates whether a sensing responder specified by the STA participates in TF sounding, NDPA sounding, or SR2SR sounding; and the AP replies with an SBP response frame to reject or accept the request of the STA. An SBP initiator can have a function of setting a measurement parameter related to the sensing responder.

The invention relates to the technical field of wireless networking, in particular to a shipborne digital wireless ad hoc network method and system, and the method comprises the following steps: obtaining ship communication equipment information, constructing a layered mark matrix, generating a node role identifier set, monitoring response time delay, judging a connection relation, and establishing a communication topology. And optimizing spectrum allocation according to an interference ratio and an overlapping coefficient, completing channel matching and path completion, executing AES encryption and encapsulation of data frames, and decrypting and verifying time delay record effective data frames by a receiving end according to a key index. According to the invention, through combination of hierarchical marks established by node equipment information and communication roles, the accuracy of inter-node connection priority and hierarchical mapping is improved, through dual detection of the interference ratio and the spectrum overlapping coefficient of the channel, the stability of a communication path and the channel utilization rate are improved, and the communication efficiency is improved. In a node link matching process, path breakpoints are complemented to guarantee network integrity, a security header field is embedded in combination with a key index and a channel number, and the security guarantee level of data encryption transmission is improved.

The invention belongs to the technical field of wireless communication networks, and particularly relates to a multi-device low-power-consumption rapid networking method based on a star flash technology. The method comprises the following steps: after a gateway sends out a network frame, a device to be networked calculates an optimal adding hierarchy through an innovative optimal adding hierarchy strategy according to the load of the device, the signal strength of the gateway and the remaining electric quantity of a battery; the gateway distributes an independent time window for each level in combination with a star flash technology asynchronous time slot distribution mechanism; the to-be-networked equipment completes network access in the time slot of the belonging hierarchy; the network access equipment forms a father-son relationship, and child nodes accurately calculate wake-up time to reduce air listening power consumption; all the devices adjust the relay duration in real time to reduce redundant relays; and when the network state suddenly changes, automatic reconstruction is performed to keep optimal. According to the invention, multi-device high-efficiency low-power-consumption networking can be realized.

The invention provides an ad hoc network based on a power wireless private network, a monitoring method and a maintenance method, and belongs to the technical field of operation and maintenance of the power wireless private network, and the method comprises the following steps: realizing efficient sharing of channel resources of the ad hoc network through channel resource optimization, data frame effective bearing and channel dynamic management; based on time synchronization of the cellular ad hoc network, multi-hop networking and route dynamic updating of the cellular ad hoc network are realized; the local networking scene selection equipment is in a low-power-consumption and miniaturized mode, and the remote blind compensation scene selection equipment is in a mode that the transmitting power can be rapidly and dynamically adjusted; network dynamic monitoring based on heterogeneous network multilayer modeling, heterogeneous network coverage simulation and node position optimization, and node health degree and topology anomaly analysis and early warning; and based on network topology maintenance of network data intelligent acquisition, rapid database retrieval, ad hoc network edge performance improvement, ad hoc network equipment hierarchical management and ad hoc network routing tracking, a flexible ad hoc network of a power wireless private network is constructed, and flexible resource configuration and dynamic network monitoring are 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 relates to the technical field of CAN bus communication, and discloses a CAN communication automatic networking method, which comprises the following steps that: a gateway module measures initial reference rise time and periodically compares the rise time of a current bus signal so as to physically detect the bus capacitance change caused by the access of a sensor module to be accessed to the network; then, each module to be accessed to the network carries out identity declaration in a way of modulating the bus capacitance bit by bit based on the unique serial number of the module, and completes conflict-free competitive arbitration in the modulation process of the physical layer; and finally, the gateway module synchronously decodes the unique serial number of the competition winning module and allocates a communication address to the competition winning module. Through physical layer identification and arbitration, data frame conflicts before address allocation are fundamentally avoided, the reliability and success rate of automatic networking during multi-node concurrent access are remarkably improved, and plug and play is achieved.

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.

Systems, methods, and apparatus for wireless networking are described. The methods improve the efficiency of wireless networking by coordinating transmissions among sharing and shared access points (APs). An example wireless networking method includes transmitting, by a sharing access point (AP), a trigger frame associated with a multi-AP coordinated transmission. The method further includes receiving, by the sharing AP, a response frame indicating an idle status of a channel associated with a shared AP, where the sharing AP and the shared AP are included in a coordinated set. The method further includes transmitting, by the sharing AP and in response to receiving the response frame, an instruction initiating the multi-AP coordinated transmission.

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.

Systems and methods are disclosed to form a sensing network carried out by a networking device. Methods are provided to form the sensing network. The method may be carried out by a networking device including a transmitting antenna, a receiving antenna, and at least one processor configured to execute instructions. The method includes receiving, from an associated AP, client device information associated with a plurality of client devices in an extended service set. Further, the method includes selecting a PACD from among the plurality of client devices according to the client device information. The method further includes selecting a common frequency channel according to a frequency channel in use by the PACD. The method also includes sending a sensing measurement request frame or receiving a sensing measurement request frame on the selected common frequency channel.

The application provides a space-based heterogeneous multi-link networking selection transmission method, which comprises the following steps: step one, user terminal networking; step two, link quality estimation: the user terminal and the satellite periodically count the data volume of the transceiver, and estimate the communication quality of each transmission link in combination with the link load and the packet loss rate; step three, link selection; step four, link switching: in the service communication, the sending end decides the communication link switching by using the cumulative sum control chart technique according to the link state, so as to ensure that the service data is always transmitted through the optimal link; and step five, satellite protocol conversion: the satellite converts the protocols of various communication link frames into unified network layer data packets through address mapping, so as to realize the hinged communication of the multiple heterogeneous links by the routing of the IPv4 unified service data packets. The method of the application realizes the heterogeneous terminal networking by uniformly taking IP as the data bearing on the satellite, realizes the link optimization by using the link quality estimation and the control chart technique, and improves the flexibility and efficiency of the satellite communication.

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 invention discloses a networking method of a fire-fighting sensing network, which comprises the following steps: a sensing node sends a network access application frame to an aggregation node through a service channel according to a preset time interval, and the aggregation node converts the network access application frame into an equipment registration application frame and sends the equipment registration application frame to a gateway node; the gateway node processes the equipment registration application frame to obtain an equipment registration response frame, and sends the equipment registration response frame to an aggregation node; after receiving the equipment registration response frame, the sink node sends a network access application response frame to the sensing node in response to the received next network access application frame of the sensing node; and if the sensing node receives the network access application response frame from the sink node, the sensing node is bound with the sink node. Compared with an existing protocol, special optimization is carried out according to special requirements of the fire-fighting industry, so that the system has remarkable advantages in the aspects of real-time performance, reliability, data transmission efficiency, low-power-consumption design and the like, and rapid and stable response can be provided in emergency situations.

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.

This invention belongs to the field of wireless communication network technology, and particularly relates to a low-power, fast multi-device networking method based on StarFlash technology. The steps are as follows: After the gateway sends a network frame, the device to be networked calculates the optimal joining level based on its own load, signal strength with the gateway, and remaining battery power through an innovative optimal joining level strategy; the gateway, combined with the asynchronous time slot allocation mechanism of StarFlash technology, allocates independent time windows for each level; the device to be networked completes network entry within its assigned level's time slot; the network-entering devices form parent-child relationships, and child nodes accurately calculate wake-up times to reduce idle listening power consumption; all devices adjust relay durations in real time to reduce redundant relays; automatic reconfiguration is performed when the network state changes abruptly to maintain optimal performance. This invention enables efficient, low-power multi-device networking.

The present disclosure provides systems and methods for generating comments corresponding to an input video. Given an input video, a comment with content related to the input video may be generated. One aspect includes a computing system including a processor and a memory. The processor may be configured to execute the program using the portion of the memory to receive an input video in the social networking system, generate at least one predicted comment corresponding to the input video based on video frames of the input video and a user profile of a target user, and present the at least one predicted comment to the target user.

The invention relates to the field of networking of the Internet of Things, and discloses a low-power-consumption networking method and equipment of a sensor and a storage medium. The method comprises the following steps: a networking switching system sends a network access permission time slot to a distributed sensor system; the to-be-accessed subsystem receives the network access permission time slot and sends a network access request to the networking exchange system based on the network access permission time slot; the networking exchange system receives the network access request, generates a synchronization frame based on the network access request, and sends the synchronization frame to the distributed sensor system; the networking subsystem receives the synchronization frame, generates dormancy duration based on the synchronization frame, and enters a low-power-consumption dormancy state based on the dormancy duration; and the to-be-networked subsystem monitors and receives the synchronization frame, analyzes the synchronization frame and joins the synchronization frame into the networking subsystem. In the embodiment of the invention, time division multiplexing is used for solving control and data conflicts, and low-power-consumption networking data uploading of each sensor of the Internet of Things is realized under the condition of avoiding address conflicts.

To provide a method for preventing a loop while permitting a multipath in a L2 network.SOLUTION: A network interface card (NIC) supports virtual L2 networking, receives a L2 frame including source and destination MAC addresses via a first port of the NIC, and transmits the L2 frame via ports other than the first port based on a loop prevention rule. In additional examples, the NIC sends the L2 frame to the host via a first port of the NIC. The L2 frame may be a bridge protocol data unit (BPDU). Upon receiving a BPDU from the host via the first port, the NIC determines that the BPDU is looped back and disables the first port.SELECTED DRAWING: Figure 1

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.

A method to obtain network performance measurements without having to deploy a reflector device in a network. The method involves generating at a first device, a first frame according to a feature of a networking protocol, wherein the first frame is generated by inserting timestamp information indicating a departure time of the first frame into each of a first field and a second field of a header of the first frame. The first device sends the first frame to a network entity in a network. The first frame is configured to cause the network entity to send, in reply to the first frame, a second frame according to the feature of the networking protocol. The second frame includes timestamp information in either a first field or a second field of a header of the second frame. The first device receives the second frame and derives a network performance metric.

The invention discloses a communication networking method, electronic equipment and an air conditioner power line system, and relates to the technical field of communication. The communication networking method comprises the steps that data is sent between a main node and a sub-node according to a preset frame format, and after the sub-node receives a message frame sent by the main node, the sub-node determines forwarding delay time according to signal strength; according to the forwarding delay time, determining a sub-node needing data forwarding from the plurality of sub-nodes as a forwarding sub-node; and after the waiting time reaches the forwarding delay time, the forwarding child node sends the data in the message frame to the next child node. According to the invention, communication between the nodes is carried out based on the signal intensity by adopting a receiving signal priority principle, and the communication mode is adopted until the data sent by the main node is transmitted to the corresponding receiving node or the child node responds to the main node, so that efficient and stable data transmission is realized, and the data transmission efficiency is improved. And the consequence of poor communication caused by failure of a single node is effectively avoided.