127 results about "User Datagram Protocol" patented technology

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 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 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 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.

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.

The embodiment of the invention provides a network attack detection method and device, equipment and a storage medium, and the method comprises the steps: determining a traffic capture file according to received update function data in a preset time under the condition that the update function data received by a vehicle-mounted terminal meets a preset condition, and transmitting the determined traffic capture file to a vehicle-mounted terminal; the update function data comprises a firmware update request and / or a user datagram protocol packet; extracting traffic characteristics in the traffic capture file; converting the traffic characteristics into a traffic image; obtaining an attack detection result according to the traffic image; and when the attack detection result is that the network attack occurs, intercepting the update function data. According to the embodiment of the invention, the detection time can be remarkably shortened while high-precision attack detection is realized, the storage space occupation and computing resource consumption of the attack detection model are effectively reduced, the attack detection model is easier to deploy on edge equipment such as a vehicle-mounted terminal, and the OTA updating safety of the vehicle-mounted terminal is remarkably improved.

Methods and apparatuses are described herein for implementing multi-host multi-path secure transport using a Quick User Datagram Protocol (UDP) Connections (QUIC). A method performed by a client endpoint can involve sending, to a network node, a request to establish a QUIC connection with a destination endpoint, the request to establish the QUIC connection including a flow identifier (ID). The method can involve receiving, from the network node, a response including an indication of the request to establish the QUIC connection with the destination endpoint. The method can involve encapsulating inner QUIC packetized data within outer QUIC packetized data, the inner QUIC packetized data including the flow ID. The method can involve sending the outer QUIC packetized data to the network node for forwarding to the destination endpoint based on the flow ID.

The invention discloses a communication link establishment method and device based on a hardware firewall, equipment and a medium, relates to the field of network security, is applied to a target hardware firewall, and comprises the following steps: acquiring a first data packet sent by a target upper computer corresponding to the target hardware firewall; the target hardware firewall is managed by a target upper computer; the first data packet is a data packet constructed based on a user datagram protocol and encrypted based on a preset encryption rule; analyzing the first data packet based on a preset decryption rule corresponding to the preset encryption rule to obtain a corresponding analysis result, creating a session access rule based on the analysis result, and determining a target communication port corresponding to the session access rule; and acquiring a second data packet sent by the target upper computer, and establishing a target communication link based on the second data packet, the session access rule and the corresponding target communication port so as to perform communication based on the target communication link. According to the method and the device, the secure creation of the real-time session between the upper computer and the hardware firewall is realized.

Methods, apparatus, and systems that can be implemented to associate User Datagram Protocol (UDP) based connection identifiers with appropriate Quality of Service (QoS) flows are disclosed to enable Access Traffic Steering, Switching and Splitting functionality at lower layers and to allow accurate measurements of Round-Trip Time for all traffic on a session. In one example aspect, a wireless communication method includes determining, by one or more nodes in a core network for a session that comprises at least one QoS flow, at least two identifiers identifying two connections associated with the at least one QoS flow. The two connections are established according to a UDP based protocol. The method also includes establishing, by the one or more nodes in the core network, a mapping between the at least two connection identifiers and the at least one QoS flow.

The embodiment of the invention discloses a request sending method, which comprises the following steps of: determining a target interface from a first type of interface and a second type of interface which communicate through a fast user datagram protocol network connection protocol based on target information used for determining whether to call the first type of interface in a target network request library; and sending the request for acquiring the network information to the server through the target interface by using the target network request library, thereby solving the problem of poor communication efficiency between the client and the server in a data communication process in related technologies. The embodiment of the invention further discloses a request sending device and equipment, a computer storage medium and a computer program product.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect whether a traffic flow comprises multipath transmission control protocol (MPTCP) traffic or multipath quick user datagram protocol Internet connection (MPQUIC) traffic. The UE may modify one or more packets of the traffic flow based at least in part on a result of detecting whether the traffic flow comprises MPTCP traffic or MPQUIC traffic or based at least in part on an access traffic steering, switching, and splitting (ATSSS) policy configured on a modem processor of the UE. The UE may provide the traffic flow for transmission by the UE in accordance with the ATSSS policy configured on the modem processor of the UE. Numerous other aspects are described.

Disclosed in the present application are a registration method, a packet data gateway, a terminal device, and a storage medium. The registration method is applied to a packet data gateway (PDG). The method comprises: establishing a control plane connection with a terminal device on the basis of a Quick User-Datagram-Protocol Internet Connections (QUIC)-based control plane protocol; receiving a registration request message which is sent by the terminal device on the basis of the control plane connection, wherein the registration request message comprises identification information and a registration parameter of the terminal device; sending an authentication request message to a core network device on the basis of the identification information and the registration parameter of the terminal device; and receiving an authentication authorization message sent by the core network device, and sending a registration response message to the terminal device on the basis of the authentication authorization message.

A route advertisement method and a device for improving efficiency of generating a route advertisement message are disclosed. The method is applied to a network including a first network device and a second network device, and the first network device and the second network device establish a user datagram protocol (UDP)-based border gateway protocol (BGP) connection. The method includes: The first network device obtains one or more route sending groups, where each of the one or more route sending groups includes one or more pieces of route information; the first network device separately generates at least one route advertisement message based on each of the one or more route sending groups, each of the at least one route advertisement message includes the one or more pieces of route information in the route sending group corresponding to the route advertisement message; and the first network device sends the route advertisement message to the second network device through the BGP connection.

The invention discloses a data transmission method and device based on a UDP (User Datagram Protocol) and related equipment, and the method comprises the steps: receiving a UDP message sent by a sending end host, reading data from equipment corresponding to a source address in the message, taking the read data as an effective load in the message, and sending the read data and the message to a receiving end host, sending the effective load to a receiving end host, so that the receiving end host writes the effective load into a device corresponding to a destination address in the message, records receiving timestamp information in the message, completes data transmission, determines a packet loss rate of data transmission, judges whether a network is congested based on the sending timestamp information, the receiving timestamp information and the packet loss rate, and sends the message to the receiving end host. And if yes, adjusting the preset transmission efficiency. According to the invention, data transmission is completed by the network card based on the new field expanded by the UDP in the message, so that the data reading and writing process is completely completed by the network card without the participation of a CPU, the transfer process is reduced, and the data transmission efficiency is improved to a certain extent.

Systems, methods, and devices for delivering configuration files and firmware updates to Customer Premises Equipment (CPE) using a Trivial File Transfer Protocol (TFTP) to Hypertext Transfer Protocol Secure (HTTPS) proxy service are disclosed. Embodiment methods may include the TFTP-to-HTTPS proxy service listening on a User Datagram Protocol (UDP) port for incoming TFTP requests, receiving a TFTP request from a CPE device, translating the TFTP request into an HTTPS request, sending the translated HTTPS request to a backend server, receiving an HTTPS response, translating the HTTPS response into a TFTP response, and sending the TFTP data packets to the CPE device. Some embodiments may include storing the translated file in the cache, checking the cache for a requested file before requesting the file from the backend server, and sending the cached file to the requesting CPE device when it is stored in the cache.

A data transmission method is provided, where the method includes: receiving a user datagram protocol (UDP) data packet transmitted by a client; determining a target second thread from n second threads through a first thread, where the n second threads are configured for processing the UDP data packet, and the target second thread is configured for managing a QUIC connection corresponding to the UDP data packet; and transferring the UDP data packet to the target second thread through the first thread. The second threads are scheduled by the first thread, and different second threads may manage different QUIC connections, so that QUIC connections are managed through different threads. Therefore, a server can fully utilize a concurrent processing capability of a plurality of cores, which improves the efficiency of managing QUIC connections and the data transmission performance.

Aspects of the present disclosure relate to techniques for sequence numbering and reordering with packet repetition for user datagram protocol (UDP) packets. An apparatus is configured to establish a communication session with a user equipment (UE), the communication session including a multipath fast UDP Internet connectivity (MPQUIC) function; using the MPQUIC function to realize guiding, switching and segmentation of UDP (User Datagram Protocol) service between the UE and a proxy; and transmitting a UDP packet between the UE and the proxy, the UDP packet encapsulated within a datagram frame comprising an indication of an order of the datagram frame.

Embodiments include a method of opening a Quick User Datagram Protocol (UDP) Internet Connections (QUIC) socket on a computing platform, initializing QUIC packet processing of a hardware-based offloader, opening a QUIC connection to the offloader, and transmitting a first QUIC packet to the offloader over the QUIC connection. The hardware-based offloader encrypts and transmits the QUIC packet.

Systems and methods for fast user datagram protocol Internet connectivity (QUIC) traffic steering over the N6 interface are presented. A user plane function (UPF) may receive traffic filtering information from a session management function (SMF). The traffic filtering information may include an identifier of a Fast User Datagram Protocol Internet Connection (QUIC) connection. The UPF may identify a portion of the data traffic according to traffic filtering information that includes an identifier of the QUIC connection.

The invention discloses a data transmission method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication, and the data transmission method comprises the steps that a first node sends a first data packet to a second node; wherein the first data packet comprises static field information of a header, and the static field information of the header comprises at least one of the following items: static field information of a real-time transport protocol (RTP) header; static field information of a user datagram protocol UDP header; the invention relates to static field information of an Internet Protocol (IP) header.

The invention discloses a glycosyl transferase mutant and application thereof in preparation of salidroside, and belongs to the technical field of bioengineering. The mutant is obtained by mutating UDP (User Datagram Protocol) glycosyl transferase AtUGT85A1 from arabidopsis thaliana, and the mutant comprises at least one mutation of C128G, F204A and F217V. The invention also discloses a gene for coding the mutant, a recombinant expression vector containing the gene and a genetically engineered bacterium. According to the present invention, the glycosyl transferase mutant with significantly improved catalytic activity is obtained through the structure-oriented rational design, the glycosyl transferase mutant is integrated into the de novo synthesis path of Escherichia coli, and after the constructed gene engineering bacterium is fermented for 72 h, the salidroside titer can achieve 9.1 g / L, and is improved by 200% compared with the wild type; the method provided by the invention gets rid of dependence on exogenous addition of expensive glycosyl donors, has the advantages of simple process, low cost, environmental friendliness and the like, and provides a new strategy for green industrial production of salidroside.

The invention discloses a streaming analysis method and a streaming analysis system for satellite network streaming detection data, which are used for solving the problems of real-time acquisition, analysis, storage and visualization of massive streaming detection data in a satellite network. The streaming analysis system is composed of a data acquisition module, a streaming processing module, a data persistence module and a front-end visualization module. The streaming analysis method is established on the basis of the system. The system receives and collects streaming detection data in real time through a UDP (User Datagram Protocol); carrying out analysis, conversion and multi-dimensional operation on the collected data to generate a multi-dimensional network performance index; and the result is persistently stored through the database and can be visually displayed at the front end by calling data in the database. According to the streaming processing analysis method and system constructed by the invention, the real-time processing requirements of a satellite network on acquisition, transmission, conversion, analysis, storage and display of massive streaming detection data can be met, the real-time monitoring capability of the satellite network is improved, and the problem of disorder of streaming data is solved.

The invention discloses an embedded topographic data loading method based on a UDP (User Datagram Protocol) and a verification technology. The embedded topographic data loading method comprises the following steps: S1, establishing network communication between an upper computer and a lower computer, and carrying out data transmission preparation; s2, reading the topographic data files in sequence; s3, preprocessing the topographic data based on a UDP communication protocol; s4, sending data based on a UDP (User Datagram Protocol) communication protocol; s5, the lower computer feeds back the data receiving condition to the upper computer; and S6, the lower computer feeds back the Block writing condition of the Flash to the upper computer. The method has the advantages that the integrity and safety of the topographic data in the transmission process are effectively improved, and the requirements for rapid loading, maintenance and updating of mass topographic data are met.

This invention relates to the field of network time synchronization technology, and discloses a network time synchronization method, system, storage medium, and electronic device for bypassing UDP port blocking. The method includes: sending a time synchronization request to a Network Time Protocol (NTP) server through a User Datagram Protocol (UDP) port to detect the reachability of the NTP primary channel; when the NTP primary channel is determined to be unreachable, generating a query domain name containing a first time parameter to form a Domain Name System (DNS) query message encapsulating the time synchronization request; constructing a DNS secure transmission backup channel and sending the DNS query message to the target server; receiving the DNS response message returned by the target server and extracting a second time parameter from it; calculating the clock offset between the client and the target server based on the first and second time parameters, and adjusting the local system clock accordingly; the above method achieves secure and reliable network time synchronization under UDP port blocking.

A network device driver (NDD) associated with a network interface device (NID) of a computing device processes a tunnel packet received by the NID and originating from a source device. The tunnel packet includes a tunnel packet header, a user datagram protocol (UDP) header, and a payload including a Transmission Control Protocol / Internet Protocol (TCP / IP) packet. The NDD accesses a data structure that corresponds to the NID. The NDD extracts a value from a field of the tunnel packet based on information in the tunnel packet and on information in the data structure. The NDD selects, based on the value, a first downstream destination from a plurality of downstream destinations operable to further process the tunnel packet, and causes the tunnel packet to be subsequently processed by the first downstream destination.

The invention discloses a method for quickly upgrading embedded equipment based on firmware partition. The method comprises the following steps: after the embedded equipment is powered on, reading firmware data in Flash and partitioning the firmware data; the PC reads the firmware file to be upgraded and divides and packs the firmware file; the PC sends the partitioned data packet to the embedded device; the embedded device compares the received partition data with the original corresponding partition data in the Flash in real time while receiving the data packet; a multi-core architecture of embedded equipment is utilized to distribute tasks to different cores for parallel execution, and after processing of all partitions is completed, a PC machine is notified that updating is completed through a UDP (User Datagram Protocol). According to the method, the firmware updating efficiency of the embedded equipment is greatly improved, the firmware updating time is shortened by utilizing the partition erasing characteristic of Flash and the multi-core parallel processing capacity of the embedded equipment, and good feedback is obtained in actual engineering application.

This invention belongs to the field of communication technology, specifically relating to a method for content delivery and local confirmation for glasses in a private network environment. The method includes the following steps: Step 1: The content delivery server assigns a task identifier to each task content data and sends it to the glasses terminals within the private network via a User Datagram Protocol (UDP) broadcast channel; Step 2: Each glasses terminal receives the UDP broadcast data until it recovers the complete task content data and registers it in its local task table; Step 3: When a glasses terminal executes task content data in the registered state, it triggers a voice confirmation module to collect the wearer's confirmation-type command voice to generate a task confirmation event. The content delivery server then parses the Bloom filter digest bit array to obtain the set of completed tasks and updates the task management record. This invention significantly improves the efficiency, reliability, and controllability of task management in a private network environment.

The application discloses a satellite communication-based live broadcast interaction method and device, equipment and a storage medium, relates to the field of video transmission, and is applied to a target server and comprises the following steps: acquiring a target live broadcast video stream sent by a first type of client corresponding to a target live broadcast room through a first type of port number, and acquiring a target multicast stream corresponding to the target live broadcast video stream based on a first target transmission protocol; the first target transmission protocol is a real-time transmission protocol based on a user datagram protocol; acquiring a target interaction message stream sent by a second type of client through a second type of port number, and processing the target interaction message stream to acquire a corresponding target message stream; the target message stream is a message stream transmitted based on a second target transmission protocol; and the target message stream is displayed on each target client corresponding to the target live broadcast room based on the message types of the interaction messages in the target message stream. The application improves the live broadcast watching experience of users.

The invention provides a vehicle-mounted terminal communication method and device, equipment, a medium, a program product and a vehicle, and the method comprises the steps: receiving a wake-up request sent by a cloud platform through a UDP (User Datagram Protocol) when a vehicle-mounted terminal is in a dormant state; wherein the network connection between the vehicle-mounted terminal and the cloud platform is disconnected in the dormant state; sending confirmation information of the wake-up request to the cloud platform, and establishing a message queue telemetry transmission MQTT connection with the cloud platform; receiving confirmation information for establishing MQTT connection sent by the cloud platform and an operation instruction sent by the cloud platform through the MQTT channel; and issuing the operation instruction to the vehicle to enable the vehicle to execute the operation instruction. In this way, the low power consumption requirement of the vehicle-mounted terminal during dormancy and the high efficiency and reliability during awakening can be considered, and the stability and the real-time performance of communication after awakening are improved.