219 results about "User Datagram Protocol" patented technology

The invention relates to the technical field of digital relays, and discloses a digital relay telephone traffic real-time acquisition and intelligent distribution system for emergency scheduling, which executes the following steps through five modules: receiving and normalizing UDP (User Datagram Protocol) data through a time domain buffer management module, completing space-time matching of telephone traffic and media streams through a cross-protocol association engine, and completing real-time transmission of the telephone traffic and the media streams. And unsuccessful data triggers a reverse tracing service for remedy, the intelligent scheduling controller performs grading processing according to the emergency degree and dynamically deploys resources, and finally the data is intelligently distributed to a message queue cluster through an elastic load balancing module. By constructing a multi-level heterogeneous data processing framework and dynamic redundancy transmission, intelligent space-time alignment and elastic resource scheduling mechanisms, accurate routing of first-aid instructions and zero-loss guarantee of key data are achieved, meanwhile, the self-adaptive fault-tolerant capability of the system to abnormal working conditions such as equipment clock skew and burst flow is enhanced, and the system reliability is improved. And high-availability technical support is provided for digital upgrading of emergency dispatching.

A multi-room multi-channel audio synchronization method, apparatus, and device and a storage medium are provided. In this method, an audio signal to be played in a primary audio device is determined, the audio signal is encoded according to channels by using a preset low-latency audio encoding strategy and audio encoding data is obtained. Next, the audio encoding data is optimized based on a User Datagram Protocol and a Negative Acknowledgment NACK retransmission mechanism to obtain audio coded sequence data packets. The audio encoding sequence data packets are controlled to be synchronously played in at least one secondary audio device by using a preset room synchronization control strategy and a channel synchronization control strategy.

The invention provides a PCIe (Peripheral Component Interconnect Express)-Ethernet high-speed data transmission system based on an FPGA (Field Programmable Gate Array), which belongs to the field of communication of digital circuits and comprises a PCIe interface module, a gigabit Ethernet interface module, a DDR3 (Double Data Rate 3) cache module and an AXI (Advanced eXtensible Interface) bus control module. The high-speed data transmission capability of the PCIe interface and the flexible port expansion capability of the gigabit Ethernet interface are integrated, and a user datagram protocol (UDP)-based control logic is constructed to realize data interaction between the PCIe and the gigabit Ethernet, so that high-speed and reliable data transmission is realized; and the high requirements of a high-speed signal acquisition and playback system and the like on the data transmission rate and reliability are met.

The invention discloses a multi-device collaborative passenger flow statistical method and system, and the method comprises the following steps: presetting a unique identity label and a physical position index for devices, reading the unique identity label and the physical position index, and initializing the attribute information of the devices; a user datagram protocol broadcasting mechanism is started, and heartbeat information including the unique identity label, the physical position index and the online state is sent according to a preset period; monitoring the user datagram protocol broadcast message in the local area network, constructing and maintaining an online equipment list, and updating the online state of the equipment according to the heartbeat information receiving analysis condition; judging adjacent equipment based on a physical location index, and deciding whether to start a first boundary or a second boundary according to the online state of the adjacent equipment; and the decision result is transmitted to a passenger flow statistical algorithm to generate a shop-crossing detection line. According to the invention, multi-device collaborative passenger flow statistics dynamic boundary configuration is realized, the shop-crossing detection line is accurately generated, and the passenger flow statistics problems of fixed boundary configuration, easy missed counting and poor multi-device collaboration are solved.

The invention discloses a UDP-based large file one-way gatekeeper passing method, and relates to the technical field of data processing. The problems of high packet loss rate, low bandwidth utilization rate and insufficient verification efficiency in large file transmission in a one-way non-feedback gatekeeper environment are solved. The method comprises the following steps: segmenting a file into small fragments based on configuration, generating metadata with verification, and compressing the metadata; a fragment transmission sequence is dynamically scheduled through a priority queue, a uniform retransmission strategy is adopted to guarantee reliability, and overtime tasks are automatically cleared; a metadata verification and deduplication mechanism is utilized to ensure that the fragments are complete and unique, and redundant storage is avoided; and recombining the fragments into a complete file according to a metadata sequence, updating a database state to be'received ', and synchronously cleaning temporary fragments and redundant logs. The method has a good application prospect in the fields of distributed storage, cloud computing, CDN (Content Delivery Network), big data transmission and the like.

The invention discloses a UDP (User Datagram Protocol) socket buffer area self-adaptive adjustment method and system and a medium. The method comprises the following steps: setting an initial UDP socket buffer area size, a buffer area size adjustment rule and a packet loss rate threshold value before network transmission; when network transmission is carried out, the packet loss rate is sampled regularly, the average value of the packet loss rate of each evaluation window period is calculated, and the average value of the packet loss rate of each evaluation window period is compared with a packet loss rate threshold value. And matching the comparison result with a buffer area size adjustment rule, and dynamically adjusting the size of the UDP socket buffer area according to the matching result corresponding to each evaluation window period in sequence so as to give consideration to low packet loss rate and high memory resource utilization rate. The invention aims to solve the problems that the existing UDP-based data transmission method cannot change the size of the UDP socket buffer area according to the real-time change of the network environment and the packet loss rate, so that the system resource memory waste and the transmission performance reduction are easily caused, and the system memory resource utilization rate and the network transmission stability can be improved.

Provided are a communication method and a communication device, the method comprising: a session management network element receiving first information, the first information comprising information of an application, or a data network name and / or single network slice selection auxiliary information, the data network name and / or single network slice selection auxiliary information corresponding to a data connection session, data of the application or the data connection session is transmitted through a media transmission protocol MoQ based on a fast user datagram protocol; the session management network element acquires information of at least one MoQ relay according to the first information, the information of the at least one MoQ relay being used for establishing a connection between a user equipment and a first MoQ relay of the MoQ relay; and the session management network element sends second information, wherein the second information comprises information of the at least one MoQ relay sent to the user equipment. Through the method, the user equipment can obtain the information of the MoQ relay to establish the connection, so that data is transmitted based on the connection.

A method and system for detecting a denial of service (DOS) attack when packets used in the DOS attack are user datagram protocol (UDP) packets, are disclosed. The method includes obtaining values from an application header of a UDP packet; and when, based on use of at least one modified probabilistic Bloom filter (PMBF) for a destination to which the UDP packet indicates that it is destined, the obtained values are not values expected to be found in a UDP packet destined for the destination: increasing an uncommon per sample (ups) estimate for the PMBF; and when the increased uncommon per sample estimate is greater than an upper ups threshold: setting an alarm state to on; suspending update of the PMBF counters; and initiating a mitigation action at least with respect to the UDP packet.

The invention relates to the technical field of computer network communication and signal processing, and particularly discloses a low-delay signal real-time processing and visualization method based on a UDP (User Datagram Protocol), which comprises the following steps: S1, initializing a data receiving module, and receiving and processing data; s2, signal processing and spectrum analysis; s3, updating the oscillogram in real time and displaying a time domain signal; s4, drawing a spectrogram through the spectrum data; s5, updating the waterfall plot in real time; s6, controlling the periodicity of data acquisition and graph updating by adopting a timer; and S7, storing the image and the collected data. The invention further provides a low-delay signal real-time processing and visualization system based on the UDP. The system comprises a data receiving module, a signal processing module, a waveform display module, a spectrum analysis module, a waterfall plot module and a storage module. According to the scheme, the problems of high delay, slow display updating, complex data processing and the like in the prior art can be solved, and efficient data processing and stable graph updating are realized.

The invention discloses an edge cloud cluster dynamic conversion and service sharing method, system and device. The method comprises the following steps: determining a network quality index between nodes in an edge cloud cluster; under the condition that the number of the first nodes in the edge cloud cluster is greater than a first preset number, converting the edge cloud cluster into a master-free cluster; under the condition that the edge cloud cluster is a main-free cluster, each node shares the application service and the resource utilization rate of the own node with adjacent nodes in a preset range in a mode of broadcasting a user datagram protocol data packet; and under the condition that the edge cloud cluster is a master-free cluster, if any node detects that the network quality index between the node and other nodes with a preset number is greater than a preset threshold value, electing a master node from the nodes. According to the invention, the technical problems that the edge cloud cluster depends on the central cloud and the service between the nodes is unreliable in a high-mobility environment and a network limited condition are solved.

The invention relates to an IPSEC (Internet Protocol Security) key exchange method resistant to quantum computing. According to the invention, based on a lattice cryptographic algorithm and improved SM4-256 symmetric encryption, secure communication between a master mode and a fast mode is realized; in the main mode, an initiator sends an IKE first message through a UDP (User Datagram Protocol), negotiates SA parameters with a responder and exchanges a lattice password certificate; the two parties encapsulate a temporary 32-byte secret key by using the public key of the opposite party, generate a 512-bit random number through SM4-256 encryption, and sign and transmit the 512-bit random number to realize secure random number exchange and certificate verification; and the two parties calculate a first session key based on a PRF (Pseudo Random Function), and encrypt an exchange data HASH value to complete main mode key consistency confirmation. And after entering the fast mode, taking the main mode session key as an SM4-256 symmetric key to continue communication, sending an SA message carrying a 512-bit random number by the two parties, calculating to obtain a second session key, and establishing an ESP tunnel. According to the method, the security of IPSEC under the threat of quantum computing is improved through the lattice password.

Two electronic devices attempt to communicate and exchange Internet Protocol (IP) packets over a cellular communication network, and at least one of the two devices is behind a symmetric Network Address Translation (NAT) service. At least one of the two devices executes a Session Traversal Utilities for NAT (STUN) protocol, which provides to that device a pair of external IP address and port of that device; which that device then informs to a Message Broker Unit that is accessible to both devices via the public Internet. The Message Broker Unit provides the external IP address and port of that device, to the other device; which then connects to a Virtual Private Network (VPN) server and sends to the first device one or more User Datagram Protocol (UDP) packets that penetrate or puncture the NAT service in an application-agnostic manner.

The embodiment of the invention discloses a session keeping method and device, equipment, a medium and a product, and the method comprises the steps: determining a first container instance which builds transmission control connection with a client and first socket information of the first container instance, building the first socket information and second socket information of a cloud container cluster, the mapping relation between the first socket information and the second socket information and the third socket information of the public network corresponding to the second socket information; sending the third socket information to the client; and forwarding the user datagram protocol data packet sent by the client to the first container instance through the second container instance according to the mapping relationship. According to the technical scheme provided by the embodiment of the invention, the problem that cloud container session maintenance cannot be realized at present is solved, the UDP data packets of the client can be uniformly forwarded to the first container instance through the container instance for forwarding according to the socket mapping relationship by mapping the socket of the cloud container cluster to the socket of the first container instance, and the user experience is improved. Therefore, multi-protocol sessions can be maintained together.

The invention discloses a remote intelligent control system for multimedia equipment and an implementation method thereof, and belongs to the technical field of network communication, and the implementation method comprises the following steps: acquiring network environment information of the multimedia equipment, judging an NAT (Network Address Translation) type, and generating a mixed penetration protocol selection rule to determine an initial penetration protocol; the method comprises the following steps: acquiring port allocation characteristics of NAT equipment based on an initial penetration protocol, generating port prediction parameters through linear increment prediction and LSTM neural network training, and formulating a port prediction and keep-alive strategy; executing UDP (User Datagram Protocol) penetration according to a keep-alive strategy, starting a TCP (Transmission Control Protocol) standby mechanism when the UDP penetration fails, and generating a penetration scheme by combining HTTP tunnel encapsulation and firewall inbound rule configuration; equipment identification information collection, signaling interaction, penetration attempt and connection establishment are completed based on a penetration scheme, successful feedback is generated after verification is passed, and remote control is realized; according to the invention, the stability and efficiency of remote connection of the multimedia equipment in a complex network environment are improved.

The invention discloses a software-in-the-loop simulation test system and method for intelligent driving, and relates to the technical field of automatic driving algorithm testing. According to the scheme, a closed-loop test of an in-the-loop simulation test is realized only through an intelligent driving platform, a scene simulation software end and an initialized vehicle dynamics model group; all the components realize distributed communication through a user datagram protocol without additional hardware, so that complicated external communication configuration is not needed in a closed-loop test for realizing in-loop simulation test, multi-tool collaboration is simplified, and the complexity of a system structure is reduced. And the intelligent driving platform coordinates vehicle dynamics data according to a preset algorithm to carry out path planning and decision control, so that the interaction efficiency of software in a loop simulation test process is improved. And the vehicle dynamics model group is used for sending the RDB data packet to the scene simulation software end through the public user datagram protocol channel, that is, cross-component collaboration is realized through the public user datagram protocol channel, and the synchronism of closed-loop testing is ensured.

The invention discloses a data transmission method, which comprises the following steps: in response to file fragment data received from a server of a data transmission component, generating first verification information of the file fragment data based on the file fragment data, and generating a fragment verification transaction request; the file fragment data is obtained by performing fragment processing on target file data through a server side of the data transmission component; calling a data verification contract based on the fragment verification transaction request through a block chain node in the block chain network, and determining a data verification result of the file fragment data based on the first verification information and the second verification information; the second verification information is generated by the server side of the data transmission component based on the file fragment data; determining a file transmission state of the target file data based on the data verification result; and data transmission is carried out between the client and the server of the data transmission component by adopting a user datagram protocol. According to the invention, the reliability and security of data transmission are ensured while low-delay data transmission is realized.

The invention discloses a data transmission method and device and electronic equipment. The method is applied to a data sending end and comprises the steps that a user datagram protocol UDP message sent by a data receiving end is acquired, and the UDP message at least comprises message header data and a data packet type; performing dual verification on the message header data and the data packet type to obtain a verification result; under the condition that the verification result indicates that the UDP message is successfully verified, a response message is sent to the data receiving end, and the response message is used for indicating that handshake between the data sending end and the data receiving end is successful; and transmitting the data requested by the data receiving end to the data receiving end through a remote direct memory access (RDMA) protocol. According to the scheme provided by the invention, data transmission can be realized on the FPGA side, and the complexity of data transmission is reduced.

System and method for air / ground data transport (AGDT) is provided. The system includes an Application Layer, a Session / Transport Layer, a QUIC / TLS Layer, a User Datagram Protocol (UDP) Layer, an Internet Protocol (IP) Layer, and an Internet Protocol (IP) Layer. If the data is small, the Session / Transport Layer selects MQTT transport protocol for control plane communication. If the data is large, the Session / Transport Layer selects rsync / SSH protocol for data plane communication.

The invention relates to the technical field of network transmission, in particular to a parallel coding and decoding method based on a multi-channel network TCP-UDP (Transmission Control Protocol-User Datagram Protocol). According to the invention, by constructing a multi-path parallel transmission mechanism of a transmission control protocol and a user datagram protocol, the transmission performance of each path can be dynamically evaluated and quantified according to the round-trip time and packet loss rate of the path at the beginning of session establishment, and the initial data distribution proportion is scientifically calculated, so that the initial optimization utilization of network bandwidth resources is realized; in the data transmission process, the actual sending rhythm and the bandwidth utilization condition of each link are continuously monitored, and the evolution trend of the bandwidth load is accurately identified through a time sequence prediction model, so that the path weight is dynamically modulated, the distribution proportion of the data packet is corrected in real time, and the data stream can be continuously and uniformly transmitted on the optimal path. The problems of transmission bottleneck and delay caused by performance fluctuation of a single path are effectively solved, and the reliability, stability and efficiency of data transmission are greatly improved.

The invention discloses a method, a device and equipment for establishing fast user datagram protocol network connection. The rapid user datagram protocol network connection establishment method is applied to a client and comprises the steps that a rapid user datagram protocol network connection QUIC connection request is established, and the connection request comprises a plurality of QUIC protocol version numbers; the QUIC connection request is sent; handshake negotiation information from the server side is received, the handshake negotiation information comprises the QUIC protocol version numbers supported by the server side, and the QUIC protocol version numbers supported by the server side are obtained by verifying the multiple QUIC protocol version numbers through the server side. According to the establishment method of the rapid user datagram protocol network connection provided by the embodiment of the invention, the situation that QUIC protocol versions are incompatible can be reduced, the protocol version compatibility and renegotiation problems are solved, and the QUIC connection establishment speed is improved.

The invention provides an efficient fragmentation sorting module for UDP (User Datagram Protocol) receiving and unloading, which is deployed in an FPGA (Field Programmable Gate Array) of an FC (Fiber Channel) communication daughter card, comprises modules implemented when an instruction set is executed, and specifically comprises a protocol analysis module, a flow identification module, a message storage module, a fragmentation sorting module and a message recombination module. Therefore, receiving and unloading of a big data packet of a UDP protocol in the FPGA are realized, out-of-order rearrangement is performed on the fragments in the FPGA, the fragments are recombined into a big data packet, and the big data packet is uploaded to a software driver and an upper-layer application through DMA, so that the network data processing efficiency in a high throughput scene is improved, and the purpose of improving the network communication performance is achieved.

A communication method and a communication apparatus, which are used for implementing communication between a terminal and a core network by means of a unified non-3GPP access gateway, thereby reducing the complexity of network deployment. The method comprises: receiving a first message from a terminal, the first message being used for requesting authentication, connection establishment or connection release, and the first message being an internet protocol security (IPSec) message, or the first message being a quick user datagram protocol internet connection (QUIC) protocol message; and sending a second message to a control plane network element, the second message being a non-access stratum (NAS) message determined on the basis of the first message.

To more appropriately execute communication using multiple links.SOLUTION: A communication device has control means for executing a predetermined process that controls whether to execute first communication using a first number of links established between an external device and the communication device by communication functions compliant with the IEEE 802.11be standard as communication between the external device and the communication device, or second communication using a second number of links that is less than the first number of links between the external device and the communication device established by communication functions compliant with the IEEE 802.11 standard on the basis of whether the communication device is executing UDP (User Datagram Protocol) communication.SELECTED DRAWING: Figure 6

Presented are systems and methods for managing / steering quick user datagram protocol (UDP) international connection (QUIC) traffic. A wireless communication node may store traffic filtering information that includes an identifier of a QUIC connection. The wireless communication node may identify a portion of data traffic according to the traffic filtering information that includes the identifier of the QUIC connection.

The invention discloses a UDP (User Datagram Protocol)-based file batch transmission method and device and a medium, and the method comprises the steps: splitting each file in a file set into frame data, and obtaining a transmission queue; sending a push start request to the transmission queue, and pressing the first frame in the transmission queue into the task queue after a successful response is obtained; and dynamically allocating thread resources through a thread pool, asynchronously extracting frame data in the task queue, executing UDP transmission to the terminal set, obtaining a success response returned after the terminal set passes verification, traversing the transmission queue according to a sequence number identifier, and completing batch transmission of all files in the file set. According to the UDP-based file batch transmission method and device and the medium, asynchronous parallel processing of transmission tasks is achieved through frame data splitting, task queue management and dynamic resource allocation of the thread pool, the resource utilization rate and the transmission efficiency are effectively improved, and the user experience is improved. The problem that high-concurrency transmission of multiple terminals and multiple files is difficult to realize by utilizing limited resources can be solved.

The invention provides a UDP-based many-to-one data stream ordered transmission method and device, and the method comprises the steps: receiving a data transmission rule sent by a second device, the data transmission rule comprising a data transmission sequence of a plurality of first devices related to a data subscription service; receiving the UDP data packet according to the data transmission sequence, and generating a new UDP data packet in combination with the UDP data packet; wherein if the current first equipment is the first first equipment according to the data transmission sequence, a new UDP data packet is directly generated according to the UDP data of the current first equipment; otherwise, receiving the UDP data packet sent by the previous first equipment, splicing and combining the received UDP data packet and the UDP data of the first equipment, and generating a new UDP data packet; and sending the new UDP data packet to the next first device or the second device according to the data transmission sequence. Ordered transmission of UDP data can be realized, and the UDP data transmission quality is improved.

In some implementations, a client device may send to an access gateway function (AGF) device, and via a wireline connection, a first Internet protocol (IP) message that includes non-access stratum (NAS) information. The client device may receive from the AGF device, via the wireline connection, and based on sending the first IP message, a second IP message that includes acknowledgement information. The NAS information may be included in a service data unit (SDU) that is encapsulated in the first IP message. The wireline connection may be a user datagram protocol (UDP) wireline connection or a transmission control protocol (TCP) wireline connection.

The invention relates to a stable display method based on a UDP (User Datagram Protocol) in a real-time image transmission process. The stable display method comprises the following steps of: constructing a UI (User Interface) basic class in a Qt framework; constructing three thread objects in the basic class, namely data receiving, data processing and image processing; in the data receiving thread, image data monitoring is carried out in a UDP network port channel in real time and is transmitted to the data analysis thread, and circulation is carried out; meanwhile, adding a dynamic buffer setting algorithm in a slot function; starting a data processing thread, performing analysis processing on the received data packet, transmitting complete image data to an image processing thread, and continuing to repeat the operation; the image processing thread is responsible for transmitting the image data to an image display control of the UI interface for display, and the operation is continuously repeated; and observing an algorithm execution effect, and evaluating a resource utilization rate and image integrity. According to the invention, the problem of unstable image display in the real-time image transmission process of the laser communication UDP can be solved, and stable display of the image with minimum resources is ensured.

Various embodiments of methods and systems for handling high definition (HD) map data messages by a processing system of a vehicle include receiving a plurality of HD map data messages each including sequence information in a first memory queue of the processing system via a user datagram protocol (UDP); storing a selected one of the HD map data messages in a second memory queue in response to determining that sequence information for the selected one of the HD map data messages is greater than an expected sequence number; and processing the HD map data message stored in the second memory queue in response to the sequence information of the HD map data message stored in the second memory queue matching the expected sequence number.

The invention provides a video processing method and device, electronic equipment and a storage medium, and the method comprises the steps: inputting ship monitoring video data into a preset video compression model, recognizing redundant data in a ship monitoring video, and carrying out the compression, and obtaining target ship monitoring video data; coding the target ship monitoring video data based on a forward error correction algorithm to obtain verification data; adding the verification data into the target ship monitoring video data to obtain target transmission data; and sending the target transmission data to a ship monitoring platform based on a user datagram protocol. According to the application, the ship monitoring video data is compressed through the preset video compression model to reduce the video data volume, the compressed video data is processed by using the forward error correction algorithm to obtain the target transmission data, and the target transmission data is sent to the ship monitoring platform based on the user datagram protocol. Accurate transmission of video data in a complex maritime communication environment is ensured.