200 results about "Transmission latency" patented technology

The invention discloses a TSN scheduling optimization method and device based on flow sensing autonomous learning, equipment and a medium. The method comprises the following steps: deploying a lightweight flow detection module in a switch or a router, and after a controller receives a data request, automatically identifying a newly arrived unknown service flow by using the lightweight flow detection module, and judging whether the newly arrived unknown service flow is a periodic TT flow or an unpredictable burst flow; the controller performs classification management on the identified service flow types, collects topological information and flow requirements of the whole network and issues the topological information and the flow requirements to the terminal nodes through a network management interface; the controller constructs an intelligent queue scheduling task based on the collected network topology information and traffic demand and converts the task into a Markov decision process MDP, network resources, queue states and priorities are used as a state space, a scheduling strategy is used as an action space, a reward function is designed in combination with throughput and delay indexes, and an intelligent queue scheduling task is obtained. Driving a dynamic environment through real-time data and training a DRL model; an enhanced queue scheduling mechanism Pro-CQF is adopted, different priority labels are configured according to classified flow types, and then mixed flow scheduling is carried out; the controller periodically collects time delay, packet loss rate and end-to-end transmission delay indexes and feeds back the indexes to the DRL model, and a scheduling strategy is updated online. According to the method, the traffic sensing and scheduling efficiency is greatly improved in a network environment in which multiple service flows coexist and end-side equipment functions are different, and the reliability and the expandability of the TSN in industrial Internet of Things, edge computing and other high-real-time application scenes are remarkably enhanced.

The invention relates to the technical field of software-defined wide area network data transmission, and discloses a software-defined wide area network data transmission method and system based on edge computing. According to the method, network state data are collected through distributed probes deployed at edge nodes, and a dynamic transmission path between the nodes is calculated after data cleaning and feature extraction. A collaborative filtering algorithm is utilized to analyze historical and real-time data to generate a transmission optimization strategy, and a fuzzy logic decision maker is combined to generate a dynamic routing strategy. And predicting a future congestion state based on network characteristics and a routing strategy, and adjusting flow scheduling parameters accordingly. And finally realizing visual display and time sequence storage of the network state data, the routing strategy and the scheduling parameters. The method can effectively reduce transmission delay and improve the utilization rate of network resources.

The invention discloses a direct memory access (DMA) communication device for a computing network convergence computing architecture and a working method of the DMA communication device. The DMA communication device comprises a DMA transaction processing module and a protocol conversion module; the DMA transaction processing module is used for analyzing related DMA read-write requests, realizing processing of the DMA read-write requests and receiving of response data of the DMA read requests and completing processing of interrupt requests at the same time, and the protocol conversion module is used for completing conversion of read-write requests between a DMA interface and an AXI interface and mapping of response states. The invention aims to realize efficient protocol conversion between AXI and DMA interfaces, avoid the problem of DMA read request starvation caused by resource competition and ensure the consistency of DMA data access so as to improve the performance of an accelerator in high-performance calculation and artificial intelligence application, reduce transmission delay and improve data transmission bandwidth and energy efficiency.

The invention relates to the technical field of unmanned aerial vehicle data processing, and discloses an unmanned aerial vehicle data analysis method and system based on 4GMQTT communication. The system comprises a communication interface, an integrity verification module, a delay monitoring module, an analysis reconstruction module and a transmission compensation module. The communication interface module receives an unmanned aerial vehicle data flow through a 4GMQTT protocol; the integrity verification module extracts protocol header information and judges whether the integrity of the protocol header information is lower than a threshold value or not; the delay monitoring module activates the first timing window or the second timing window according to the protocol head integrity, the former obtains transmission delay and triggers the analysis and reconstruction module, the latter obtains the protocol load integrity change rate, and the transmission compensation module is triggered if the protocol load integrity change rate exceeds a threshold value. The analysis reconstruction module generates a recombination strategy according to the transmission delay and reconstructs effective data units, and the transmission compensation module generates a compensation strategy according to the change rate to repair missing data units. The system can cope with the problems of protocol head damage, delay and load integrity fluctuation in data transmission.

The invention discloses an industrial Ethernet switch based on an FPGA. The industrial Ethernet switch comprises an input network interface, an FPGA core processing unit, an output network interface, a monitoring management interface, a clock generation module, a power module and a data storage module. According to the switch, the FPGA assembly line architecture is applied, analysis, switching and forwarding of industrial network frames are achieved, the end-to-end transmission delay of the industrial network frames is greatly reduced by means of the parallel processing characteristic of hardware, and the strict requirement of real-time control frames for low delay can be met. The advantages of parallel processing of FPGA hardware are fully exerted, transmission delay is remarkably reduced, the reliability in an industrial environment is enhanced through a redundant power supply and hybrid storage design, real-time monitoring of network data is supported, the state of an industrial network is conveniently mastered in time, and the method is suitable for an industrial control network with extremely high requirements for real-time performance and stability.

The invention discloses a data link transmission method for a memory, relates to the technical field of data transmission, and solves the technical problems of resource mismatching, transmission delay increase and throughput reduction caused by mixed transmission of large-capacity data and small-capacity data. Small-capacity data are matched with fast and slow channels according to requirements, the problem of mismatching of data and channel resources is solved, the channels are screened and sorted based on dynamic indexes such as channel real-time loads, transmission speed mean values and periodic bandwidth utilization rates, the data are distributed in combination with a load balancing principle, the channels are prevented from being overloaded or idle, the overall channel utilization rate is improved, and the data transmission efficiency is improved. Secondly, through link optimization of combined packaging, repeated data replacement and priority scheduling, the control overhead and repeated transmission quantity of small data are reduced; meanwhile, a cache mechanism is introduced to multiplex high-frequency data, invalid transmission is further reduced, and delay is reduced.

This application provides a method for secure message transmission, a method for negotiating IPsec SAs, and related apparatus, applicable to wide area networks (WANs). In scenarios spanning multiple tunnel segments, by extending BGP routing and based on VRF granularity, an IPsec SA for end-to-end security protection is negotiated between a first edge and a second edge. After the first edge securely protects VPN service messages based on the IPsec SA, it sends the messages through the overlay end-to-end tunnel between the first and second edges. The second edge processes the messages based on the IPsec SA to obtain the VPN service messages. In this application, security protection only needs to be performed once at the first edge; intermediate nodes do not require encryption / decryption processing, thus ensuring secure message transmission while improving transmission efficiency and reducing transmission latency.

The invention discloses a wireless audio transmission protocol optimization algorithm for a low-delay dynamic password, which comprises the following steps of: generating an initial encryption key: before audio data transmission starts, generating the initial encryption key according to a current network environment, equipment computing power and audio transmission requirements; the encryption key can be generated based on a timestamp, a random number or a key exchange protocol, the randomness and the safety of the encryption key are ensured, and a proper encryption algorithm is selected: according to equipment computing resources and network conditions, a proper low-delay encryption algorithm is selected. By selecting a low-delay encryption algorithm and dynamically adjusting the encryption complexity, the influence of the encryption process on transmission delay is remarkably reduced, the real-time performance of audio transmission is optimized, the reliability of key synchronization in a wireless network is ensured through a redundant synchronous data packet and a regular key synchronization mechanism, and even if signal loss or interference occurs, the reliability of key synchronization in the wireless network is ensured. And synchronization can be recovered in time, so that decryption failure caused by asynchronous keys is avoided.

A data transmission method and apparatus. The method includes: a core network element receives a first message sent by a first terminal device. The first message is used to request to establish a first PDU session. The core network element determines, based on group information corresponding to the first terminal device, that the first terminal device needs to perform local routing. The group information includes a group identifier ID and a group member list. The core network element obtains binding information. The binding information includes the group ID and session information of the first PDU session, and the session information includes one or more of a session ID, a TEID, and a QFIs of the first PDU session. The core network element sends the binding information to a first access network node. This can implement IAB based local routing, and shorten a transmission latency.

The invention provides a multi-terminal clock synchronization method, system and device and a medium, and relates to the technical field of wireless communication, and the method comprises the following steps: a master device sends a synchronization request packet to an ith slave device at a first sending moment; the ith slave device receives the synchronization request packet at the first receiving moment and sends a synchronization response packet to the master device at the second sending moment; the master device receives a synchronization response packet at a second receiving moment, and determines a first receiving moment and a second sending moment according to the synchronization response packet; determining a transmission delay parameter and a clock offset parameter according to the first sending moment, the second sending moment, the first receiving moment and the second receiving moment, and sending the transmission delay parameter and the clock offset parameter to the ith slave device; and the ith slave device adjusts a local timer according to the transmission delay parameter and the clock offset parameter, so that clock synchronization between the ith slave device and the master device is realized. According to the invention, high-precision clock synchronization between multiple slave devices and the master device is realized.

According to the high-precision time synchronization method for decoding the IRIG-B code based on the FPGA hardware and transmitting the IRIG-B code to the ARM through the QSPI, the FPGA directly receives an IRIG-B code signal, a hardware state machine is used for analyzing and accurately extracting time information in real time, and delay and jitter of software decoding are avoided. The built-in module measures transmission delay and corrects clock drift, and the timestamp precision is further improved. The corrected timestamp is transmitted to the ARM through the QSPI interface, the ARM end adopts optimization measures to ensure data accuracy and low delay, the problem that in the prior art, time synchronization precision is insufficient is effectively solved, and the time synchronization method and device are suitable for high-real-time scenes.

This invention discloses a method for optimizing the topology of a 3D on-chip network (SoC) for high-speed data acquisition systems. Addressing the problem that general-purpose 3D SoC architectures are difficult to adapt to the communication characteristics of high-speed data acquisition systems, leading to high transmission latency and redundant link resources, this method models the network topology adjustment process as a Markov decision process and employs deep reinforcement learning to achieve adaptive optimization of the topology. The method uses a general-purpose 3D SoC as the initial architecture, constructing a state representation that includes node connection features, average network latency, longest path latency, and link area; defining a pruning and regrowth action space; designing a reward function that integrates changes in average latency, longest path latency, and link area; and using a deep Q-learning network with a multilayer perceptron structure for policy training. To improve learning efficiency, an action candidate set is constructed and combined with a two-layer greedy policy to achieve fast and effective search. Through iterative learning and topology updates, a 3D SoC topology that better suits the communication load of high-speed data acquisition systems can be obtained, reducing average transmission latency and link area overhead while ensuring connectivity.

This invention discloses a low-latency materialized view method, comprising the following steps: S1, after the application server initiates a database transaction to the source database and executes data operation instructions, before the database transaction is committed, a state intent event is constructed. This relates to the field of database technology. This application uses heavy data change information as the state intent event and a lightweight commit confirmation signal as the commit state event. By separating the state intent event and the commit state event and processing them asynchronously in parallel, the update latency of the materialized view no longer depends on the entire CDC link, but only on the transmission latency of the commit confirmation signal. This reduces transmission latency, achieves lower-latency data synchronization, and alleviates the high latency problem inherent in traditional materialized view updates that rely on change data capture technology.

The present disclosure relates generally to wireless communication systems and methods, and in particular to monitoring and reporting of uplink and downlink data transmission latencies according to configurable timing and data granularity. Various example implementations disclosed herein provide mechanisms for the network side of a wireless network system to flexibly configure monitoring, measuring, calculating, and reporting of information related to downlink and uplink data transmission latencies among various network nodes, devices, and entities, and in coordination between the control plane and user plane of the wireless network.

The invention discloses an Ethernet communication system based on MicroBlaze and a data transmission method. The system comprises a MicroBlaze processor, an Ethernet UDP (User Datagram Protocol) stack module, a cross-clock domain transmission module, an AXI-Stream FIFO (First In First Out) module and a composite bit width conversion module. The MicroBlaze drives each module through an AXI bus, intervention of a DDR controller and DMA is not needed, deviation between a processor clock and an Ethernet clock is eliminated through asynchronous FIFO, and data integrity and transmission stability are ensured; and the composite bit width conversion module adopts a five-stage pipeline processing architecture and is used for synchronously realizing splitting and merging of 32-bit and 8-bit Ethernet data, zero value filling and data alignment. The invention constructs a DMA / DDR-free architecture with less resource occupation and low transmission delay, realizes stable and reliable Ethernet transmission on an FPGA platform, and is suitable for the field of industrial control with strict real-time requirements.

A communication method, a communication apparatus, a computer-readable storage medium, and a computer program product. A maximum remaining transmission delay of data is determined for the data based on remaining duration of a timer maintained for the data, that is, remaining time of the data is determined. The remaining time is reported to an access network device so that the access network device can schedule the data based on the remaining time to help successful transmission of the data within a budgeted transmission delay, and to improve a transmission success rate of the data.

The invention discloses a holographic computing task distributed distribution method and system based on multi-person multi-view interaction, and relates to the technical field of distributed computing and holographic interaction.The system comprises a main scheduling node, a plurality of computing nodes and a user terminal.The main scheduling node obtains scene graph data of a current frame and view cone parameters of the user terminal; generating a dynamic granularity task block with metadata through a dynamic sensing task block generator; obtaining a visual angle coherence cluster through a visual angle coherence clustering engine; calculating sharing benefits and full-link cost of task blocks and clusters, constructing a benefit-cost ratio objective function, and obtaining an optimal matching relationship through an optimization algorithm; according to the method, dynamic adaptation of task granularity and optimal allocation of resources are achieved, redundant rendering and transmission delay are reduced, and the fluency of multi-user holographic interaction and the resource utilization rate are improved.

This disclosure provides a method and apparatus for transmitting Physical Uplink Shared Channel (PUSCH), applicable to the field of communication technology. The method, executed by a terminal device, includes: determining a transmission configuration for multiple PUSCHs, including Configuration Grant (CG-PUSCH), to be transmitted simultaneously uplink from multiple antenna panel panels; and determining control resource pool indices associated with different PUSCHs according to configuration / scheduling information. Each control resource pool index is associated with a different Transmit / Receive Point (TRP), and each TRP corresponds to a different antenna panel panel of the terminal device. Multiple PUSCHs are transmitted simultaneously through the panels corresponding to the TRPs associated with the transmission configurations of the multiple PUSCHs. Therefore, PUSCHs can be transmitted simultaneously from the antenna panel panels of multiple terminal devices to multiple TRPs on the network side, enabling simultaneous cooperative transmission, increasing transmission reliability and throughput, and reducing transmission latency under multiple TRPs.

Embodiments of the present application provide user equipment and a method of communication of the same. The method includes initiating a periodic channel occupancy with a first period and using a first information to indicate the initiated channel occupancy that is to be shared by a base station or a second UE. This can allow UE initiated channel occupancy and UE can share the initiated channel occupancy with the base station in a semi-static channel access mode, solve issues in the prior art, improve transmission latency, provide a good communication performance, and / or provide high reliability.

The invention discloses a low delay method aiming at an asymmetric hierarchical coding caching problem, a server storing N files is arranged in a hierarchical coding caching system, the server is connected with K1 mirror image nodes and K3 users through an error-free sharing link, and each mirror image node also serves K2 users. And each mirror image and each user are respectively provided with caches with the sizes of M1 and M2. According to the method, sub-files required by a user are divided into three types, and corresponding transmission methods are designed according to the file types. The transmission delay of the system is significantly reduced by allowing concurrent transmission of the server and the mirror image during some transmission phases.

The embodiment of the invention relates to a communication method, station equipment and a communication system. The communication method is applied to a first station device, and comprises the following steps: determining a channel direct connection establishment request TDLS Setup Request frame; the TDLS Setup Request frame comprises first identification information, and the first identification information identifies the support capability information of the first station equipment to a peer-to-peer transmission opportunity sharing (P2P TXS) mode; the support capability information comprises whether the first site equipment supports a P2P transmission opportunity sharing (TXS) mode or not and at least one of the types of the P2P TXS mode supported by the first site equipment; and the TDLS Setup Request frame is sent by the data transmission module and the TDLS Setup Request frame. According to the method provided by the embodiment of the invention, the sudden low-delay service can be effectively dealt with, the low-delay transmission mechanism is further improved, and the transmission delay of the low-delay communication service is reduced.

This application provides a method and apparatus for transmitting uplink data. A terminal device can send first data to a network device on a configured first resource. The terminal device instructs the network device to change the resource size for transmitting data. The terminal device then transmits second data on a second resource of a different size than the first resource. Different resource sizes can be used for different data types, thereby meeting data transmission requirements and saving resource overhead. Furthermore, by transmitting the first data on the configured first resource and the second data on the configured second resource, the network device avoids the need for dynamic resource scheduling, thus saving transmission latency.

The invention belongs to the technical field of data processing, and discloses an XR space calculation multipath transmission method and system, and the method comprises the steps: selecting an optimal transmission path through an improved multi-arm bandit algorithm, and transmitting a data package to a corresponding edge server through the optimal transmission path; the edge server receives and recombines the data packet into a video frame image, extracts feature points and descriptors of the video frame image by using a scale invariant feature transformation algorithm, and transmits the feature points and the descriptors to a cloud server; matching is carried out in combination with a pre-constructed three-dimensional point cloud map, pose information of the user is estimated, and the pose information is transmitted to a mobile device through a wide area network; and superposing the virtual information to a video frame by using a rendering engine, and displaying the video frame to a user for interaction. According to the invention, the collected video frames are unloaded to a plurality of edge server nodes, and only the feature extraction task is executed on the nodes, so that the network bandwidth consumption and the transmission delay are obviously reduced.

This application provides a multi-path data transmission method, electronic device, and storage medium. It acquires communication parameters for each path in a multi-path transmission scheme and determines the replication probability of the data packet to be transmitted based on these parameters and a preset multi-armed slot machine model. This allows for the transmission of part or all of the data in the data packet across multiple paths according to the replication probability, thus saving transmission latency. In the multi-path transmission scheme, all data in the data packet is transmitted through the path with the minimum transmission latency. In each path other than the path with the minimum transmission latency, a portion of the data in the data packet is replicated according to the replication probability and transmitted. In other words, all data in the data packet is transmitted through the path with the minimum transmission latency, while the other paths replicate the portion of the data corresponding to the replication probability. This reduces the retransmission rate, decreases transmission latency, and increases the transmission rate.

This invention belongs to the field of data transmission technology and discloses a privacy-preserving network security data transmission method, including the following steps: S1. Data privacy preprocessing: Constructing a personalized differential privacy protection mechanism to perform local privatization processing on the original data to balance data privacy protection and availability; S2. Intelligent scheduling of transmission tasks: For scenarios with multiple network nodes and multiple transmission links, establishing a scheduling model with transmission latency and energy consumption as optimization objectives, and using a quantum particle swarm optimization algorithm that integrates chaotic perturbations to solve the model; S3. Trusted verification of transmitted data: Dividing the network into several sub-regions and constructing a tree-like key management structure, and using key priority allocation and cross-region node verification mechanisms. This solution, through a three-step collaborative mechanism, constructs an end-to-end network security protection system covering the entire data lifecycle, achieving the organic unity of personalized privacy protection, collaborative optimization of transmission efficiency and energy consumption, and decentralized trusted verification.

The invention discloses an on-chip network hybrid routing implementation method and architecture based on real-time congestion perception, and relates to the technical field of communication of an integrated circuit on-chip system. Comprising the following steps: step 1, creating a hybrid routing architecture; step 2, judging a routing direction by a routing direction calculation module in east, south, west and north input ports by using an NSWE hybrid routing algorithm aiming at a path node; step 3, a routing direction calculation module in a local port judges a routing direction by using a Local hybrid routing algorithm aiming at the source node; according to the invention, the transmission delay of the NoC router is reduced, the influence of congestion on the transmission efficiency is reduced, and the overall performance is improved.

This invention discloses a trust assessment method and system for mobile edge computing terminal nodes, relating to the fields of edge computing, network security, and trust management. The assessment method includes the following steps: the terminal node generates local data and trains a local model according to model update instructions issued by the central server and edge nodes, and uploads the local update parameters to the edge nodes; the edge nodes collect behavioral information of the terminal nodes and interact with other edge nodes to share recommendation information for the terminal nodes; the current trust and historical trust of the computing node are calculated, and direct trust is obtained by integrating the current trust and historical trust; the recommended trust of the node is calculated based on behavioral factors such as transmission latency, interaction time difference, data integrity, node reliability, communication success rate, and number of interactions, and malicious recommendations are filtered based on indicators such as recommendation timeliness, recommendation distance, and external trust of recommendations; the comprehensive trust of the computing terminal is calculated by combining the final recommended trust and direct trust.

This application discloses a scheduling method and communication device, relating to the field of media technology, which can reduce the transmission latency of service flows requiring latency assurance, such as audio and video. The method involves configuring a scheduling priority for each of a plurality of output streams transmitted through a first output port. The plurality of output streams includes at least one first output stream, which includes a Transport Layer Data Packet (TLDP) for audio and video. The TLDP has a priority of first priority, which is the highest priority among the priorities of the packets in the plurality of output streams and the second output stream. The second output stream includes a Transport Layer Management Data Packet (TLMDP). The plurality of output streams and the second output stream are scheduled according to the scheduling priority configured for each of the plurality of output streams. This application embodiment describes the process of scheduling packets.

The invention discloses a heterogeneous computing power mixed training method and system, and the method comprises the steps: converting a model calculation graph into a universal instruction irrelevant to hardware, packaging the hardware difference of heterogeneous chips GPU, CPU and MLU, and automatically allocating tasks to the optimal hardware according to the operator characteristics; direct communication between the MLU and the GPU is realized through a PCI e P2P direct connection technology, and gradient compression and an asynchronous communication mechanism are combined to reduce transmission delay and hide communication overhead; containerized packaging is carried out on communication libraries and dependencies of x86, ARM and RI SC-V architectures, and assemblies adaptive to an instruction set are integrated, so that cross-architecture one-key deployment and compatibility guarantee are realized; node loads and resource states are collected in real time based on deep reinforcement learning, and the task allocation proportion is dynamically adjusted. According to the method, the efficiency, the stability and the usability of heterogeneous computing power mixed training can be effectively improved.