170 results about "Frame (networking)" patented technology

Dynamic Transmission Opportunity (TXOP) sharing between overlapping Basic Service Sets (BSSs) in wireless networks. A sharing Access Point (AP) initiates a process by generating and wirelessly transmitting a control frame to allocate its TXOP to a shared AP in an overlapping BSS. Subsequently, the sharing AP receives a return TXOP frame from the shared AP, indicating the return of any unused TXOP portion. The sharing AP then has the flexibility to either resume its own transmissions using the returned TXOP or reallocate it to an alternative AP. Using the techniques in dense wireless networking environments enables efficient spectrum utilization through dynamic TXOP allocation and reclamation. The techniques address challenges of resource management in multi-AP scenarios, improving overall network performance and reducing interference in overlapping coverage areas.

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 relates to the technical field of power transmission line monitoring, and discloses a power transmission line monitoring data transmission method based on Lora and 5G hybrid networking, and the method comprises the steps: determining a network access mode through a hybrid networking selection algorithm, and generating a communication link through dual-module networking configuration; original monitoring data are processed by using a data framing compression algorithm, and a path is selected and verified through dynamic routing optimization; the modulation format is adjusted through the space-time alignment data of the multi-modal data fusion model and the adaptive modulation technology; optimizing transmission by using an abnormal data filtering algorithm and a dynamic priority scheduling program; and feedback learning mechanism evaluation performance and updating algorithm parameters. According to the invention, network adaptability, data transmission efficiency and reliability are improved, data fusion processing is optimized, adaptive optimization of transmission performance is realized, operation and maintenance cost is reduced, and safe and stable operation of a power system is guaranteed.

The embodiment of the invention provides a data transmission method and device and a storage medium, relates to the technical field of communication, and can realize directional allocation of channel resources to APs in a multi-AP cooperative group. The method comprises the following steps: receiving a first frame sent by a second AP; the second AP and the first AP belong to the same multi-AP collaboration group; the first frame comprises a group member identifier of the first AP in the multi-AP collaboration group; the first frame is used for allocating target channel resources to the first AP based on the group member identifier; and performing data transmission on the target channel resource. The present disclosure may be used in fiber to the room (FTTR) scenarios. According to the FTTR technology, wireless router APs in different rooms or positions in scenes such as families or small and medium-sized enterprises are connected through optical fibers, so that high-bandwidth and high-reliability connection of networking among multiple APs is provided, and connection between a master control AP and slave APs can be achieved through a point-to-multipoint optical distribution network.

The invention relates to the technical field of industrial control, and provides an industrial control data transmission method and an industrial control bus communication architecture. According to the method, high-speed Ethernet communication is adopted between a gateway module and an industrial controller, networking is conducted between the gateway module and a first type of industrial equipment through a user-defined protocol, a communication network achieved through a serial bus is obtained, the gateway module receives industrial control data from the industrial controller through the Ethernet, and the industrial control data are transmitted to the first type of industrial equipment. After the industrial control data is converted into serial data frames, the serial data frames are sequentially transmitted to each first type of industrial equipment by using the serial bus, so that the control data of the industrial controller is issued to the industrial equipment by using a low-cost and quickly-established network; and when the programmable extension industrial equipment is randomly added into the industrial control system, networking can be rapidly carried out on the industrial control system, so that the expansibility is greatly improved on the basis of ensuring the industrial control response performance, and the transmission efficiency of the industrial control data is improved.

The invention provides an Internet of Vehicles data transmission fairness method based on a virtual long frame, relates to the technical field of network and communication, and solves the technical problem of data volume fairness of task unloading under the condition of high vehicle speed difference. According to the technical scheme, the method comprises the following steps of S1, throughput modeling; s2, designing and realizing a virtual long frame; s3, designing a loss acknowledgement frame, constructing a'loss acknowledgement frame 'structure by the receiver, and sending the'loss acknowledgement frame' structure to the sender; a sender designs an FEC subframe retransmission mechanism, and the sender only needs to retransmit the lost FEC subframe according to the received'loss acknowledgement frame '. The method has the beneficial effects that the transmission data volume of the high-speed vehicle is increased, the transmission data volume of the low-speed vehicle is maintained, and the unloading data volume balance of the high-speed vehicle and the low-speed vehicle is realized.

The invention discloses a hybrid multiple access method which comprises the following steps: constructing an unmanned aerial vehicle cluster networking system which comprises an unmanned aerial vehicle cluster network; an unmanned aerial vehicle sending node in an unmanned aerial vehicle cluster network divides channel resource contention and a data packet receiving and transmitting process according to a unified clock, and channel time domain resources are divided into a control channel time interval (CCHI) stage and a service channel time interval (SCHI) stage through time division multiplexing; wherein in the CCHI stage, service channel resource negotiation is performed according to a preset MAC protocol frame structure, time-frequency multiplexing access is performed on a shared service channel, and preliminary hybrid multiple access is completed; the SCHI stage is used for sending a data packet; the unmanned aerial vehicle sending node increases the length of an avoidance window of the unmanned aerial vehicle sending node in the next round according to a preset backoff process in the service channel access process on the premise that a to-be-sent data packet does not suddenly change if the unmanned aerial vehicle sending node encounters the collision conflict of the data packet on the premise that the to-be-sent data packet does not suddenly change; and if the sending is smooth, reducing the length of the receding window.

This application relates to apparatus and methods for simultaneously servicing a plurality of computing devices. In one example, a testing system includes a testing frame with a plurality of cabinets, each of the plurality of cabinets housing a computing device under test. Further, the testing frame includes a control cabinet housing a testing computing device, where the testing computing device is communicatively coupled, through one or more hubs located in one or more networking cabinets of the testing frame, to each of the plurality of computing devices under test. The testing frame may also include a bracket that secures a monitor and a keyboard, where the monitor and keyboard are communicatively coupled to the testing computing device. The testing computing device can simultaneously service the plurality of computing devices, such as by causing the deletion of user data, the loading of software, and the testing of various functions.

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.

Techniques for moving buffers between ports, or virtual lanes of a port, of a networking device of a credited network while maintaining the ports in an active state without dropping any frames. The techniques may include determining that a number of buffers are to be reallocated from a first port of a networking device to a second port of the networking device. The techniques may also include causing a peer port connected to the first port to decrement, by the number, a transmit credit counter associated with the peer port. Based at least in part on determining that the peer port decremented the transmit credit counter, the first port may release the number of the buffers from a buffer pool associated with the first port, and the number of the buffers may be reallocated to the second port.

The invention relates to the technical field of wireless sensor network communication, in particular to a networking method, a networking device, networking equipment and a medium. In the application, when the network node to be accessed is accessed to the network, the candidate node is determined from the accessed network nodes, then the optimal node is determined according to the detection frame signal received by the candidate node, and the optimal node is taken as the father node, so that multiple times of trying to judge whether each candidate node is the father node corresponding to the network node to be accessed to the network are not needed; the time for determining the father node by the corresponding network node is saved, the father node determining efficiency is improved, and the network access efficiency of the network node to be accessed to the network is improved.

The invention discloses a ring network dynamic bandwidth reservation system and method, and belongs to the technical field of communication. Comprising the steps that a sending end sends a reserved message to a receiving end, and the receiving end transmits a feedback message to the sending end after receiving the reserved message; the sending end is provided with a path factor which is used for collecting and screening a demand feedback signal and a split port mask according to a feedback message; the stream reservation module is connected with the path factors and outputs corresponding stream characteristics under the action of the demand feedback signals; and the frame copying and eliminating module is connected with the stream reserving module and the path factor, and performs stream copying and stream forwarding based on the stream characteristics and the split port masks. The technical scheme has the beneficial effects that the path factors are increased, so that the flow reservation protocol can work normally to the greatest extent in frame copying and eliminating networking, state oscillation is avoided, and flow forwarding 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 invention discloses a self-adaptive unmanned cluster MAC layer hybrid networking method, and belongs to the technical field of wireless communication. The problems that an existing method is difficult to adapt to dynamic changes of the number of nodes, time slot allocation is difficult when the number of the nodes is large, and congestion conflicts and channel resources are prone to being frequently generated when the communication service volume of part of the nodes is large are solved. According to the method, a protocol frame structure is designed, a part of time slots in the protocol frame structure are designed to be dynamic contention windows, and the other part of time slots are set to be fixed time slots. In an initialization stage, nodes access a network through a contention window and distribute priorities for the accessed nodes, the priorities are dynamically adjusted according to network congestion degrees of the nodes in a network operation process, and the nodes with high priorities can be distributed to fixed time slots and enjoy higher contention priorities in the contention window; and the low-priority node participates in time slot competition in the competition window, and after the competition succeeds, the service data is received and transmitted. The method can be applied to the technical field of wireless communication.

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.

A method in the field of networking technologies for sending a wake up packet, an apparatus, and a device. The method for sending a wake up packet is applied to a first node, wherein the first node maintains a first contention window (CW1) on a first channel, the first channel is a channel on which a main transceiver of a second node works, and the method includes generating a backoff count based on CW1, executing backoff based on the backoff count, and sending a wake up packet to the second node on a second channel when backoff ends, wherein the second channel is a channel on which a wake up receiver of the second node works.

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 relates to the technical field of communication technologies, and discloses an intelligent management and control system based on LoRa wireless communication, and the system comprises a multi-band adaptive communication module which is used for monitoring the interference intensity of a plurality of ISM bands in real time, and judging whether a transmission mode needs to be switched or not based on a comprehensive evaluation model; the enhanced edge computing node is used for executing dynamic frequency band switching based on a Q-Learning algorithm and performing adaptive adjustment on a transmission mode; the hybrid topology networking module supports dynamic switching between a star network and a Mesh network and is used for optimizing a routing path through a link quality index; the cross-protocol data packaging unit is used for defining a unified data frame structure and supporting mutual conversion of LoRaWAN, MQTT and CoAP protocols; the unified data frame structure comprises a frame header, a load and a CRC16 check code; long-acting and stable operation of the equipment in a complex deployment environment can be guaranteed, the endurance time of the terminal is effectively prolonged through intelligent resource scheduling, and reliable technical support is provided for construction of the low-power-consumption wide-area Internet of Things.

The present invention relates to a data link communication method for coordinated ground-to-air networking of unmanned aerial vehicles, and belongs to the technical field of data links of unmanned aerial vehicles. The present invention comprises: dividing time slots into two categories, namely, uplink and downlink; aerial nodes send air-to-ground broadcasts in downlink time slots; ground nodes receive broadcast information to achieve coarse alignment with the time of aerial nodes; each ground node sends a network access application frame to the aerial node in the corresponding uplink time slot; the aerial node calculates the one-way distance delay between the aerial node and the ground node; the aerial node broadcasts the one-way distance delay and the network access application ACK to each ground node; the ground node finely adjusts the local clock, and sends service data to the aerial node after offsetting the corresponding one-way distance delay in the corresponding uplink time slot. The present invention can greatly improve the duty cycle of receiving and transmitting during the coordinated ground-to-air networking of unmanned aerial vehicles, and effectively support large-scale networking and long-distance high-efficiency transmission.

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.