24 results about "Packet reception" patented technology

The application discloses a kind of mobile equipment online examination methods, comprising: the behavior information of triggering at least two events in first event, second event, third event;According to two behavior information, output warning information;Examination program triggers pause event, and examination program is switched to background suspension operation;Heartbeat packet is sent to server;According to whether success of heartbeat packet reception, determine the data submission state of examination program;The data indicated by the input operation of user is sent to server and is stored in local answer database with encryption;When current examination program state is submission failure, supplement in local answer database is identified;Login current examination program, and the data in local answer database is uploaded according to version number.The application not only realizes full coverage monitoring to online examination cheating behavior, but also improves recovery success rate in abnormal submission scene.The application also discloses a system, electronic equipment and storage medium for implementing the above method.

A method of controlling a receiver of radio frequency communications includes intervals between the reception of a data packet header and an acknowledgement sent by the receiver being constant, and, once a packet has been correctly received, circuits of the receiver are put into standby for a duration corresponding to the interval after each reception of a header of same rank as that of the correctly received packet.

The application belongs to the technical field of Internet of Vehicles control, and specifically discloses a resource allocation method and system for cellular Internet of Vehicles based on graph reinforcement learning. First, a two-dimensional Markov chain model is established to describe the resource allocation and data packet transmission process in the coexistence scenario of CAM and DENM. Then, a data packet reception ratio model is proposed to evaluate the successful reception probability of CAM and DENM data packets. Meanwhile, a delay model is proposed to depict the time interval between the successful reception of two consecutive CAM data packets or DENM data packets of the same vehicle. On this basis, a multi-agent deep reinforcement learning framework is established to realize intelligent resource selection decision of vehicles. Furthermore, a resource allocation method based on graph reinforcement learning is proposed to guide the agents to more effectively extract the spatial topological features of vehicle nodes. Based on the extracted features, the application can learn and obtain the optimal resource allocation decision for each vehicle, thereby improving the successful reception rate of CAM and DENM data packets and reducing the delay.

This invention provides an energy efficiency optimization method for the large-scale deployment of ultra-reliable low-latency (URLLC) devices, comprising: Step 1: Calculating the short packet collision probability and short packet reception failure probability of a single device, and calculating the packet loss rate of the device based on the calculated short packet collision probability and short packet reception failure probability; Step 2: Calculating the packet loss rate of each device, and grouping devices with similar communication environments into one category based on the calculated packet loss rate; Step 3: Optimizing the energy efficiency of all devices categorized in Step 2 using a deep reinforcement learning method. The beneficial effects of this invention are: 1. The method can effectively reduce the transmission power of sensing devices sending short packets and the number of times the same short packets are repeatedly sent, significantly improving the communication energy efficiency of URLLC devices and extending their battery life; 2. The method of this invention uses a classification method, which significantly shortens the training time of deep reinforcement learning.

The application discloses a data packet retransmission method and device, equipment, medium and program product, relates to the technical field of communication, and the method is applied to a first device and specifically comprises the following steps: sending a first message to a second device based on whether a preset condition is met, wherein the preset condition is associated with at least one of an accumulated receiving time and an accumulated receiving quantity of a data packet received from the second device, and the first message is used for indicating a lost data packet; and receiving a to-be-retransmitted data packet sent by the second device, wherein the to-be-retransmitted data packet comprises the data packet indicated by the first message. The embodiment of the application can solve the problem that the utilization rate of network bandwidth resources in the data packet retransmission process is reduced due to the influence of the accuracy of RTO setting or the accuracy of window sliding size setting.

A packet processing apparatus includes a packet processor that processes a received packet and a buffering storage that performs storage processing on the received packet. The buffering storage includes a plurality of buffers that each stores the received packet, a selector that selects the buffer from which the packet is output, and a switching controller that controls the selector to sequentially switch buffers to be read from the plurality of buffers. The packet processor includes a distribution controller that determines a buffer of a distribution destination based on an insertion delay amount of each flow to which the packet belongs when the packet is received.

In an embodiment, an electronic device includes a communications radio, memory to store instructions, one or more processors to execute the instructions, where the instructions cause the one or more processors to receive a request for location information for a target accessory device associated with an owner electronic device, wherein the request includes a data packet with at least one public key, receive a beacon signal from a wireless device and determine at least one proximity value to the wireless device from the beacon signal, perform a comparison between a key from the received beacon signal for the wireless device and the at least one public key, and selectively send location information to the owner electronic device based on the comparison result, where the location information includes the at least one proximity value and information on a defined space within a location environment.

This invention provides a connectionless inter-satellite routing method and system, comprising: when a ground user terminal transmits data to another ground user terminal, adding the location information of the receiver and sender and the data packet status information to the header; the satellite statistically analyzes its own inter-satellite port status and its own position coordinates, and finds a suitable port for the data packet to be sent; if no suitable port meets the preset conditions, the data packet is returned and retransmitted to the original address; if there is no destination address that meets the preset conditions, it is determined whether the satellite is the satellite accessed by the receiver; if so, the location information is removed and sent to the data packet receiver; otherwise, the data packet is broadcast; if the data packet still cannot find a receiver after broadcasting, the data packet is discarded. This invention reduces the difficulty of addressing and topology maintenance, makes full use of satellite port resources, improves the reliability of routing, makes port status feedback faster, and improves the accuracy of port status judgment.

This invention relates to the field of robot remote control technology, specifically to a remote-controlled robot system and control method under high-latency intercontinental networks. The system includes: acquiring operator input to generate remote control command data packets and writing them into operator-side perception data to form perception-marked command data packets; receiving the perception-marked command data packets and acquiring robot-side execution data and safety boundary data; calculating the state offset between the operator-side perception data and the robot-side execution data to generate command verification results, and converting them into local control commands according to control reconstruction rules; after executing the local control commands, verifying the consistency between the robot-side feedback data and the operator-side displayed update data, and adjusting the execution permission level of subsequent remote control command data packets accordingly. This invention achieves a technical method for matching remote control commands with the current execution state of the robot in a high-latency intercontinental network environment.

The present application relates to the field of communication technology, and provides a network congestion detection and congestion node positioning method and network system. A source end node sends a first type of detection packet and each second type of detection packet of a current detection period to a destination end node; each intermediate node caches the received first type of detection packet to a highest priority sending queue, and determines the priority of the received second type of detection packet and caches to a corresponding sending queue; the destination end node obtains first packet reception statistical data when receiving the first type of detection packet of the current detection period, and calculates network congestion degree in combination with packet sending statistical data in the first type of detection packet; and also obtains second packet reception statistical data when receiving the second type of detection packet of the current detection period, and determines a congestion node in combination with network congestion degree, packet sending statistical data and equipment number in the second type of detection packet. The network congestion degree is accurately quantified and the congestion node is quickly positioned.

This invention provides a method, system, and computer storage medium for providing a network management engine in a cloud computing system. [Solution] A method for managing a network in a network management system via a network performance management engine, wherein a client communicates packets associated with an application gateway and a network packet management extension engine 502A, receives a response packet associated with the packet based on the communication of the packet 504A, extracts packet latency data associated with the response packet 506A, and transmits packet latency data 508A.

The present invention provides a method for adjusting a spread spectrum clock setting, comprising: expanding a system scenario to generate multiple candidate spread spectrum clock settings; applying these candidate spread spectrum clock settings to an integrated circuit device storing a predefined lookup table; measuring multiple candidate signal-to-noise ratios (SNRs) of the integrated circuit device under these candidate spread spectrum clock settings; selecting the selected spread spectrum clock setting that has the highest SNR among these candidate SNRs for the corresponding system scenario from these candidate spread spectrum clock settings; and replacing the spread spectrum clock setting corresponding to the system scenario in the predefined lookup table with the selected spread spectrum clock setting to update the predefined lookup table stored in the integrated circuit device.

Embodiments of the present application provide a data processing method and related equipment, the method comprising: obtaining an mth traffic block in a first data stream, the first data stream being sequentially transmitted in the form of traffic blocks, each traffic block containing a plurality of data packets, each data packet carrying marking information, m being a positive integer; determining reference marking information of the mth traffic block according to the marking information carried by a specific data packet in the mth traffic block; and counting the number of data packets carrying marking information consistent with the reference marking information in the mth traffic block and an adjacent traffic block of the mth traffic block to obtain a packet reception quantity of the mth traffic block. Through the embodiments of the present application, the statistical accuracy of the packet reception quantity can be improved, and the accuracy of packet loss detection can be improved.

This application discloses a method, apparatus, device, and medium for generating identification documents to improve user travel efficiency. The document-generating device receives user information input through a user information input interface and captures the user's facial image; it encrypts the user information and facial image to obtain a first encrypted data packet; it sends the first encrypted data packet to a ticket service platform, enabling the platform to obtain a second encrypted data packet; it receives and decrypts the second encrypted data packet from the ticket service platform to obtain the corresponding electronic temporary document; and it prints the electronic temporary document to obtain a temporary document. This application significantly simplifies the passenger document processing procedure, shortens waiting time, and improves the travel experience; simultaneously, it effectively alleviates the workload of police document-generating windows, optimizes police resource allocation, and allows police resources to focus on core security work, achieving a dual improvement in public service efficiency and station security management.

An electronic device according to an embodiment may comprise: a first communication circuit including an advertisement packet reception unit configured to receive an advertisement packet; at least one processor; and a memory for storing instructions, wherein the instructions are configured to, when executed individually or collectively by the at least one processor, cause the electronic device to: request the advertisement packet reception unit to transmit an advertisement packet at a first time interval; when the advertisement packet is received from the advertisement packet reception unit at the first time interval, identify whether account information included in the advertisement packet is identical to account information of a user of the electronic device; if the account information included in the advertisement packet is identical to the account information of the user of the electronic device, request the advertisement packet reception unit to transmit an advertisement packet for a second time longer than a first time; and when elapse of the second time is identified while the advertisement packet is being received from the advertisement packet reception unit for the second time, request the advertisement packet reception unit to transmit an advertisement packet at the first time interval. Other embodiments may be included.

This invention discloses a method and device for monitoring unexpected power supply signals in an airborne mission system, comprising the following steps: S1: data acquisition; S2: long-distance data packet transmission; S3: long-distance data packet reception; S4: data packet reading and data information processing; S5: data judgment; S6: anomaly alert; S7: normal alert; S8: end of monitoring. This invention can efficiently and quickly monitor unexpected power supply signals at key operating points of an airborne mission system, and provide real-time and intuitive monitoring line status and data. It can effectively avoid the problems of short-duration and difficult-to-reproduce transient electrical signals in some potential circuits, enabling real-time monitoring of the airborne mission system's operation, effectively reducing the probability of unexpected power supply failures, and improving the reliability of the airborne mission system.

This application relates to a data packet receiving method, a data processing unit, a host, and a network interface card (NIC), comprising: when data packets need to be received, the host prepares an idle buffer unit and generates a first buffer descriptor; when the data processing unit receives a data packet (network small packet), it writes it into the local buffer unit according to the buffer line alignment principle to form an aggregated data packet, and writes the aggregated data packet into the host-side buffer unit according to the first buffer descriptor, and sends a completion descriptor to the host; the host can parse the aggregated data packet according to the content of the completion descriptor to obtain the individual network small packets. This application, by aggregating multiple network small packets into a larger aggregated data packet, reduces the number of PCIe writes, improves bandwidth utilization, and reduces buffer unit occupation, thereby improving resource utilization, while maintaining compatibility with the existing Virtio protocol.

The method includes: receiving a first acknowledgement from a terminal device, where the first acknowledgement indicates that activation signaling of a secondary cell is correctly received; sending a probe data packet to the terminal device; receiving a second acknowledgement from the terminal device, where the second acknowledgement is an answer for the probe data packet, and the second acknowledgement indicates that data transmission is ready to be performed; and sending data to the terminal device. According to the method, after receiving the acknowledgement for the activation signaling, the base station actively detects whether the terminal device is ready to perform data transmission. If the terminal device is ready to perform data transmission, data transmission may be performed between the base station and the terminal device, so that data transmission time is advanced, thereby reducing a waiting time period, improving data transmission efficiency, and reducing communication latency.

A communication method, a communication device and a computer readable storage medium, the method comprising: receiving an emergency state report, the emergency state report being used to report a buffer abnormal event occurring to a receiving device, the buffer abnormal event being a first data packet receiving failure and an idle buffer capacity being less than or equal to a capacity threshold; and in response to the emergency state report, retransmitting the first data packet. The communication method provided by the present application helps to improve the communication performance.

This application proposes a method, apparatus, and electronic device for risk control of significant related-party transactions. The method includes: S1: Fully synchronizing the risk control data packets generated in real time by the risk control system; S2: Receiving and classifying transaction orders, and sorting transaction orders under the same related party in ascending order according to millisecond time sequence; S3: Performing dual-dimensional verification and diverting single-transaction limit and cumulative limit into approved orders and blocked orders; S4: Extracting approved order and blocked order information; S5: Synchronizing order information and updating the risk control data packets. This application constructs a closed loop of real-time synchronization of risk control data, real-time verification and utilization of transaction limits, and real-time feedback of blocked information to accurately block orders exceeding limits. The risk control system and the TA system have high consistency in limit data, eliminating control loopholes and balancing the compliance of business declarations and business efficiency.

Examples described herein relate to a network interface device. The network interface device can include circuitry that is to: receive a first packet comprising a first packet header and a first packet payload; receive multiple subsequent packets comprising multiple packet headers for respective multiple subsequent packets; update at least one of the multiple packet headers; and construct egress packets. In some examples, the egress packets include respective one of the multiple packet headers and the first packet payload.

This application provides a method, device, and system for testing in-vehicle Ethernet. The method is applied to the testing device and includes: sending corresponding client configuration records and server configuration records to each control device in the vehicle according to a global configuration database, enabling each control device to send and receive data packets according to the rules corresponding to the client configuration records and server configuration records; receiving data transmission records sent by each control device; and determining the transmission performance of the data stream corresponding to each data stream type identifier based on the data transmission records sent by each control device. The centralized configuration of the global configuration database and the distributed parallel testing architecture enable simulation testing of data stream transmission from multiple control devices without relying on dedicated hardware, significantly reducing hardware investment and expansion costs for simulation testing. Simultaneously, the centralized configuration through the global configuration database allows for flexible configuration of control devices, effectively improving the scalability and flexibility of the test.

A method and system for rate limiting virtual machines (VMs) are disclosed. The method includes: detecting the network load of the physical network interface card (NIC) of a compute node; when the network load exceeds a threshold, selecting a target VM that exceeds the packet reception rate limiting threshold within the compute node; capturing packets from the target VM to obtain the source IP address and tunnel identifier of the data packets entering the target VM; determining a list of source VMs based on the source IP address and the tunnel identifier; and rate limiting the source VMs based on the list of source VMs. This method requires no manual intervention, can locate the list of source VMs, and can perform network rate limiting on the source VMs, thereby reducing costs and improving the efficiency of VM rate limiting.

The embodiment of the application provides a trackside wireless device network protocol address determination method and device, computer equipment and a storage medium, and relates to the technical field of traffic track. The method is used for determining the network protocol address of a target trackside wireless device associated with a vehicle-mounted wireless device, comprising: sending a request data packet to a same network segment device of the vehicle-mounted wireless device; receiving a response data packet sent by each trackside wireless device; analyzing the response data packet to obtain the source network protocol address and local area network address of each trackside wireless device; and determining the source network protocol address of the trackside wireless device with the same target local area network address as the target local area network address of the target trackside wireless device as the target network protocol address of the target trackside wireless device. The disclosure enables the vehicle-mounted wireless device to obtain the network protocol address of the trackside wireless device associated therewith, thereby detecting the wireless channel transmission performance between the devices, and further improving the safety of train operation.