964 results about "Packet transmission" patented technology

An adaptive adjustment method of packet-level transmission priority for delay guarantee in programmable networks. The method realizes the adaptive adjustment of packet-level transmission priority in programmable networks from three aspects to satisfy the preset transmission delay requirements, namely: adaptive adjustment of priority in programmable switches based on processing delay state and switch queuing state, adaptive adjustment of priority among programmable switches based on transmission delay in upstream switches, and adaptive adjustment of global parameters based on packet transmission delay satisfaction, so as to realize the packet-level transmission delay guarantee in different positions with different time scales. In addition, for a scene with a large number of time-sensitive flows, based on the optimization model and heuristic algorithm, the optimization deployment of time-sensitive flows can be realized in polynomial time under the condition of limited network resources to improve the overall extent of delay satisfaction.

A method of secure data routing with dynamic packet spoofing is disclosed that comprises a scatter network node receiving data packets from a user communication device and a scattering application selecting a logical communication channel from a plurality of logical communication channels. The method also comprises a channel controller receiving channel information that comprises a size limit corresponding to data packets being transmitted over the logical communication channel and modifying a received data packet based on the channel information such that a size of the modified data packet satisfies the size limit. The method additionally comprises a channel adapter wrapping the modified data packet to correspond to a particular protocol that is different than an initial protocol of the modified data packet. The method further comprises transmitting the modified data packet wrapped to correspond to the particular protocol via the logical communication channel to a counterpart scatter network device.

The invention discloses a P4 switch processor core-oriented multi-service traffic packet scheduling method, which mainly comprises the following steps of: proposing a feature extraction method based on a statistical interval and Sketch, integrating data packet time correlation and traffic dynamic change, optimizing a Bloom filter conflict detection mechanism, and improving the adaptability and accuracy of an algorithm in a limited resource environment; a decision tree model is combined with scheduling, a decision tree is reconstructed to adapt to an operation mode and a data processing requirement of a P4 switch, and high-precision service flow classification under linear speed operation is ensured; a packet scheduling method AD-PIFO is designed based on a variable priority, the forwarding priority of a data packet is dynamically adjusted, the QoS requirements of different services are met, and the overall performance and efficiency of the switch are improved. The method is outstanding in high-priority traffic throughput and low-delay performance, is superior to similar algorithms in medium-low priority traffic throughput, is stable and effective under different load conditions, is reasonable in extra time overhead of data packet transmission, and is widely applied to SDN network optimization data packet scheduling scenes.

A system and method, the method including determining, by a centralized user configuration function based on a core network packet delay budget (CN PDB) and a buffer duration, an allowed maximum latency of a time-sensitive network (TSN) stream transmitted between an access network device and a user plane network element, wherein the maximum latency does not exceed a difference obtained by subtracting the buffer duration from the CN PDB, sending, by the centralized user configuration function, first latency information to a centralized network configuration function, wherein the first latency information indicates the maximum latency, receiving, by the centralized user configuration function, first configuration information, wherein the first configuration information indicates a packet transmission time of the transmit end of the TSN stream, and the packet transmission time is associated with the maximum latency, and sending the first configuration information to the transmit end of the TSN stream.

The invention provides an AmBC-NOMA communication resource joint optimization method for a high mobility V2X scene, and relates to the technical field of communication resource joint optimization. Aiming at channel dynamic change caused by high-speed motion of a vehicle and the influence of the channel dynamic change on short packet communication reliability and rate performance, the method combines reflection type communication and non-orthogonal multiple access technologies, and on the basis of fully considering channel time-varying characteristics, a reflection coefficient, a power distribution coefficient and block length resource distribution in a system are jointly optimized, so that the reliability and the rate performance of short packet communication are improved. Therefore, the communication rate performance and the resource utilization efficiency under the requirements of short time delay and low error rate are improved. Through the method, the short packet transmission rate of the system can be remarkably improved under the conditions of limited time delay and channel uncertainty, and the actual application requirements of the future Internet of Vehicles system for efficient, low-time-delay and high-reliability short packet communication are met.

A system can include a backend system and a sensor kit configured to monitor an industrial setting. The sensor kit can include an edge device and a plurality of sensors that capture sensor data and transmit the sensor data via a self-configuring sensor kit network. At least one sensor can capture sensor measurements and output instances of sensor data, generate and output reporting packets, and transmit the reporting packets to the edge device via the self-configuring sensor kit network in accordance with a first communication protocol. The edge device receives reporting packets from the plurality of sensors via the self-configuring sensor kit network and transmits sensor kit packets to the backend system via a public network. The backend system can include a processing system and a storage system, where the processing system performs backend operations on the sensor data and the storage systems stores the sensor data.

A packet transmission method, including receiving, by a session management function network element, first access network tunnel information and second access network tunnel information that correspond to a first service, and sending a downlink forwarding rule to a user plane function network element, where the downlink forwarding rule includes the first access network tunnel information and the second access network tunnel information, and the downlink forwarding rule indicates the user plane function network element to replicate a received downlink packet of the first service, and send downlink packets of the first service through two paths respectively corresponding to the first access network tunnel information and the second access network tunnel information.

The invention relates to the technical field of information processing, in particular to an Internet of Things data processing method and system based on a cloud platform, and the method comprises the following steps: based on multi-modal data uploaded by Internet of Things equipment, analyzing equipment node data synchronization delay and timestamp matching degree, carrying out the statistics of node communication frequency and equipment relevance, screening a communication optimal node pair, and carrying out the communication optimal node pair; and carrying out identifier distribution, calculating a data packet transmission success rate, and forming a node identifier distribution result. According to the method, the multi-modal data uploaded by the Internet of Things equipment is analyzed, the node communication efficiency is optimized, accurate allocation of communication resources is realized, the transmission delay and failure rate are reduced, the data transmission efficiency is improved, the data access popularity is identified, the utilization rate of storage resources is improved, the service life of the equipment is prolonged, and a high-frequency data retrieval path is dynamically optimized; the retrieval speed and accuracy are improved, the response time is shortened, and the data processing efficiency and the resource utilization rate are comprehensively improved from collection to storage, transmission and retrieval.

The invention relates to a data packet transmission method and device, computer equipment, a computer readable storage medium and a computer program product. The method is applied to a receiver and comprises the steps that under the condition that configuration information of the receiver supports a custom extension header, a first data packet in a sending window is acquired through a transmission channel, and the first data packet carries a serial number and the custom extension header; the user-defined extension head comprises a step length; and under the condition that an out-of-order data packet is received, writing the out-of-order data packet into the corresponding first storage position according to the serial number of the out-of-order data packet, the serial number of the first data packet, the step length and the length of the custom extension head, and returning a confirmation signal of the out-of-order data packet through the transmission channel. By adopting the method, the transmission efficiency of the out-of-order data packet can be improved.

One example method includes accessing at a Time-Aware Scheduler (TAS) of a Time-Sensitive Networking (TSN) network a plurality of data packets, where each data packet includes a data packet priority that defines an order for transmitting the plurality of data packets by the TSN network; grouping the plurality of data packets into a cluster according to the data packet priorities, the cluster identifying a first TSN network state; applying a first machine-learning model to the cluster to determine a TAS cycle policy that defines a timing schedule for data packet transmission in the TSN network; and providing the TAS cycle policy to components of the TSN network.

Disclosed are systems, apparatuses, methods, and computer-readable media for asynchronous execution of data path service using network fibers. A method includes: based on receiving a first packet within a service for transmitting the first packet to a destination location, processing a first portion of the first packet in a processor based on execution of a first fiber until a first hardware call is reached; sending the first packet to a first circuit for processing the first packet based on the first hardware call; and processing a portion of a second packet associated with a second fiber while the first packet is processing in the first circuit. The systems and apparatuses prevent heavy processing of content from blocking other content.

The invention discloses a dynamic bypass fault-tolerant router in a network-on-chip. The dynamic bypass fault-tolerant router comprises input and output ports, an input buffer area, a crossbar switch, a routing calculation unit, a self-checking circuit and a bypass channel. Key features comprise a fault information unit, a bypass selector, a single flit buffer area and an arbitration unit. The router detects the self-fault through the self-checking circuit, and the fault information unit stores the information. And if the router fails, the bypass selector transmits the data packet through the bypass channel and bypasses the failed router. If the router is healthy, the router exchanges fault information with an adjacent router, the fault information is used for routing decision of a data packet after integration, and meanwhile, the router can select a routing path with smaller congestion in an effective direction according to the flow distribution condition in a network. According to the method, the area overhead is relatively low, the routing hop count of the data packet is remarkably reduced, the transmission delay of the data packet is reduced while the high reliability is maintained, and the network throughput is improved.

The invention discloses a communication path determination method and device. In the method, a first network element receives a path selection request sent by a session management network element, the first path selection request being used for requesting to select a user plane network element for a session of a terminal device; the first network element selects a user plane network element for the session of the terminal equipment according to the path selection request and acquired network information, and the network information comprises routing information of a data network connected with at least one user plane network element or a subnetwork connected with the terminal equipment; and the first network element sends the information of the selected user plane network element to the session management network element. According to the method, the mobile communication system can select the user plane network element for the terminal equipment based on the routing information, so that a guarantee is provided for message transmission of a user through the user plane network element or a transmission path between the user plane network elements, and the message forwarding efficiency is improved.

A QUIC packet transmission method comprises setting a QUIC header in a next header of an IPV6 extension header, or setting the QUIC header inside an IPV6 extension header, so that the QUIC packet carries the QUIC header without carrying a UDP header.

A method for forwarding a packet is disclosed. The method includes: receiving a first packet, where a first packet header of the first packet includes a segment list used to forward the first packet, the segment list includes a plurality of sequentially arranged identifiers, each of the plurality of identifiers corresponds to one network device or one link, the list includes a first element whose length is 128 bits, the first element includes at least two adjacent identifiers in the plurality of identifiers, and the first packet includes a first pointer; determining a location of a first identifier in the first element based on a value of the first pointer, where the first identifier is one of the at least two identifiers; copying at least one identifier starting from the first identifier to a second packet header of the first packet, to generate a second packet; and sending the second packet. According to the method, a length of the segment list can be reduced, and packet transmission efficiency can be improved.

The invention provides a data packet transmission link selection method and device, electronic equipment and a medium, and relates to the technical field of network security, and the method comprises the steps: determining a target data packet needing to be sent to a receiving end; determining a network environment parameter corresponding to each transmission link according to a plurality of indexes representing the network environment of a plurality of transmission links between the transmission links and the receiving end; sorting the plurality of transmission links according to the network environment parameter corresponding to each transmission link to obtain a transmission queue; and selecting a transmission link from the plurality of transmission links according to the transmission queue, and transmitting the target data packet to the receiving end by using the selected transmission link. According to the embodiment of the invention, the network environment of a plurality of transmission links can be considered, and the transmission link is selected from the plurality of transmission links for data packet transmission, so that the problem of high packet loss caused by single-path transmission or multi-path polling transmission is relieved, and the data transmission effect is improved.

The invention provides a data communication scheduling system based on a virtual scheduling executor, and relates to the technical field of data communication scheduling, the virtual scheduling executor is introduced into a traditional network-based data transmission architecture, and the virtual scheduling executor comprises a plurality of function modules. According to the method and the system, a plurality of link scheduling modules such as a strategy scheduling module, a scheduling execution module, a link state sampling and analysis module and a first data transmission server are arranged, so that data packet transmission link selection and link scheduling strategy decoupling control are realized, and the communication flexibility, scheduling intelligence and control configurability of the system in a multi-link environment are improved; the method is suitable for a multi-link concurrent and high-reliability data transmission scene.

The present application discloses a network congestion control method, a sending network card and a receiving network card, and belongs to the field of network communication technology. Among them, the method includes: the sending network card obtains the first timestamp of the sending request message, and obtains the second timestamp of the receiving response message, extracts the internal processing delay of the receiving network card from the response message, calculates the round-trip delay RTT between the sending network card and the receiving network card according to the first timestamp, the second timestamp and the internal processing delay; calculates the packet sending rate according to the RTT, and controls the network congestion according to the packet sending rate. Through this application, the internal delay of the network card is taken into account in measuring RTT, which eliminates the error caused by the internal delay of the receiving network card to the RTT measurement, and realizes the precise control of network congestion.

The present invention discloses a USB data packet transmission method and a USB transmission system. The method defines N interrupt upload endpoints for transmitting a target data stream, where N is a positive integer ≥ 2, and at least N-1 of the interrupt upload endpoints are configured as notification-type interrupt upload endpoints. Each notification-type interrupt upload endpoint waits for a valid event to be activated, wherein the valid event includes the endpoint data of the notification-type interrupt upload endpoint being ready, and the endpoint data comes from the target data stream. When the valid event corresponding to a notification-type interrupt upload endpoint is activated, the notification-type interrupt upload endpoint sequentially executes the following: sending an ERDY transaction packet to a host, receiving an ACK transaction packet for an upload request initiated by the host, returning a data packet to the host, and receiving an ACK transaction packet for the data packet from the host. The host-side module sequentially reorganizes the data packets received by all pipelines into the target data stream. The present invention can improve the real-time performance of USB data packet transmission and increase the refresh rate.

Embodiments of the invention provide a data packet transmission method and apparatus, an electronic device and a readable storage medium. The method comprises the steps of obtaining a target data packet; extracting a target field from the target data packet; acquiring historical communication data of the network equipment, and extracting a field in the protocol frame from the historical communication data to determine information redundancy of the field; according to the importance degree corresponding to the information redundancy evaluation field, determining the importance degree corresponding to the field matched with the target field as the importance degree corresponding to the target field; splitting the target data packet into sub-data packets according to the importance degree corresponding to the target field and the network state of the network equipment, and determining a transmission strategy of the sub-data packets; the transmission strategy at least comprises a window size and / or a bandwidth proportion when the sub-data packets are transmitted; and transmitting the sub-data packets according to the transmission strategy. According to the embodiment of the invention, the target data packet is transmitted according to the importance degree of the field in the target data packet and the network state, so that the transmission efficiency and reliability are ensured.

The invention discloses a short-distance wireless audio multi-standard compatible communication protocol method, which comprises the following steps of: intelligent protocol selection: automatically selecting a most suitable wireless communication standard to carry out audio data transmission according to information such as communication capability, network environment, bandwidth requirement, signal strength, equipment type and current network load of audio equipment; the communication standard comprises but is not limited to Bluetooth, Wi-Fi, Zigbee, NFC and the like, and multi-protocol cooperative scheduling: under the condition that a plurality of protocols coexist, the load, the bandwidth use condition, the signal quality and the like of each protocol are monitored in real time. Through protocol intelligent selection and multi-protocol cooperative scheduling, the equipment can automatically select the most suitable communication standard according to the actual situation, the problem that different protocols are incompatible is solved, the interconnection and intercommunication between the equipment are improved, the low-delay processing technology is adopted, the data packet transmission sequence and the protocol conversion process are optimized, and the communication efficiency is improved. The audio data can be transmitted and played in real time, delay is reduced, and audio experience is improved.

The invention relates to a spectrum resource allocation and power control method and system for multi-unmanned aerial vehicle networking. The method comprises the following steps: constructing a communication resource allocation model; a dynamic observation value of a U2U communication link is used as an intelligent agent, each intelligent agent carries out centralized learning through a communication resource allocation model by adopting a local observation function generated by a Markov decision algorithm, and a corresponding channel state and a data packet transmission action are obtained according to an observation value of a current iterative intelligent agent. And acquiring a global reward value based on the reward function after reinforcement learning and optimization, and respectively generating a channel and power joint allocation strategy according to the global reward value. And forming a global resource allocation action set by the channel states and the data packet transmission actions of all the agents, inputting the set and the local observation value of the next iterative step agent as the state of the next iterative step into the model for iterative learning, and outputting an optimal allocation strategy. By adopting the method, the operation flexibility and efficiency of multiple unmanned aerial vehicles under limited communication resources can be improved.

Embodiments of the present disclosure provide an adaptive adjustment method and apparatus for a congestion window, a device and a medium. The adaptive adjustment method for a congestion window comprises: when the current acknowledgement frame is received, determining data packet transmission information corresponding to the current acknowledgement frame; determining target adjustment information of the current congestion window on the basis of the data packet transmission information and at least one preset congestion window adjustment strategy; and adjusting window information of the current congestion window on the basis of the target adjustment information so as to control, on the basis of the adjusted window information, the number of data packets in the current congestion window or the number of bytes in a data packet to be transmitted. According to the technical solution of the embodiments of the present disclosure, congestion windows are adaptively and dynamically adjusted, improving the stability and real-time performance of the throughput of the congestion windows, thus achieving the effects of ensuring both the live streaming image quality and the live streaming real-time performance in live streaming scenarios.

A method of supplemental UWB ranging packet transmission includes: obtaining a UWB transmission schedule including at least two scheduled transmission durations and at least one available transmission duration; transmitting, from a first UWB device, at least one first UWB ranging packet during one of the at least two scheduled transmission durations; receiving, at the first UWB device from a second UWB device, a request for supplemental UWB ranging packet transmission by the first UWB device; and transmitting, from the first UWB device and in response to receiving the request for supplemental UWB ranging packet transmission by the first UWB device, at least one second UWB ranging packet in one of the at least one available transmission duration.

The invention discloses an anti-packet loss processing method and system for audio and video data. The method is applied to an articulated naturality web, the articulated naturality web comprises two groups of devices, and the two groups of devices are respectively a receiving end device and a transmitting end device. According to the anti-packet-loss processing method and system for the audio and video data, provided by the invention, through a series of steps of packet loss detection, recovery, error concealment and the like, the audio and video data can be recovered to the greatest extent under the condition of data packet loss, the problems of jamming, fuzzy pictures, discontinuous sound and the like are reduced, and the quality of the audio and video is remarkably improved; forward error correction, interpolation compensation and various error hiding methods are carried out by using redundant data, and lost data packets are processed from different angles, so that the definition and fluency of audios and videos and the fidelity of the audios are ensured; meanwhile, through secondary packet loss detection, the situation that the transmission integrity of the audio and video data packets is affected due to the fact that the packet loss phenomenon is not found in time can be effectively avoided.

The invention discloses a low-delay and high-reliability wireless communication method and system, a medium and a product, and relates to the field of industrial information and data processing.The method comprises the steps that when an industrial control data packet with a priority processing identifier is received, MAC address table look-up operation is executed on the industrial control data packet, and a priority data packet containing a target address identifier is generated; constructing a data transmission path forwarding by bypassing the network bridge according to the target address identifier of the priority data packet; transmitting the priority data packet to a Wi-Fi driving layer through the data transmission path, so as to write the priority data packet to a hardware sending queue, and generating a sending data packet containing a time sequence identifier; determining a periodic transmission time window synchronized with the industrial control period according to the time sequence identifier of the sent data packet; and detecting a channel state index in the transmission time window, generating a retransmission control parameter according to the channel state index, and executing a data packet transmission operation according to the retransmission control parameter. According to the invention, the processing time delay of wireless communication can be reduced.

The invention discloses a reinforcement learning routing optimization method considering a dynamic underwater sound environment and node mobility. The method comprises the following steps: performing parameter initialization on an underwater sensor network; monitoring and updating underwater environment parameters and node positions in real time, and dynamically updating a network topology connection state; during data transmission, constructing a multi-dimensional state vector, selecting a routing action by adopting an epsilon-greedy strategy, and generating a routing decision; if the data packet transmission fails when the routing action is executed, ending the iteration, otherwise, calculating a multi-target reward value; updating the Q value table to optimize the routing decision; and monitoring network performance indexes in real time, adaptively adjusting reinforcement learning parameters of the intelligent agent for next iteration, and outputting an adaptive routing selection model until an iteration termination condition is met. According to the method, time-varying channel and node mobility challenges can be intelligently dealt with, and multi-objective optimization balance of energy consumption, delay and stability is realized while the data delivery rate is remarkably improved.

The invention discloses a decentralized high-performance multicast method and system based on Gossip and RDMA, and relates to the field of computer network communication. The method has better reliability, realizes zero-loss transmission of data packets through message de-duplication, timeout retransmission, ACK / NACK convergence and a dynamic topology adaptation mechanism, ensures data consistency, and solves the problem of insufficient reliability of traditional UDP multicast; the method has the advantages that the real-time performance is high, the delay is low, the throughput is high, the zero copy and kernel bypass characteristics of the RDMA and the batch processing mechanism of the MPMC are combined, the average delay is lower than 10 microseconds, the throughput in a large data packet scene reaches 374GB / s, and the low-delay requirements of high-frequency transaction, high-performance calculation and the like are met; the method has high expansibility, is based on a decentralized architecture of an improved Gossip protocol, does not need core node maintenance topology, supports dynamic joining or quitting of nodes, can adapt to large-scale cluster expansion, and solves the expansibility bottleneck of centralized multicast.

The invention provides a transmission timeliness verification method, system and device and a readable medium, and belongs to the technical field of mobile communication. The method applied to receiving end equipment comprises the following steps: receiving a message from sending end equipment, and determining a first timeliness verification parameter of the message, a first timeliness verification code of the message and a receiving timestamp of the message; verifying the timeliness of the message according to the first timeliness verification parameter of the message, the first timeliness verification code of the message and the receiving timestamp of the message to obtain a timeliness verification result; wherein the first timeliness verification parameter comprises a sending timestamp of the message and a data packet transmission life cycle. The method is used for verifying the timeliness of the message and preventing playback attacks.

A method, computer program product, and computing system for processing a plurality of packets transmitted from a first computing device to a second computing device. A packet sequence number associated with each packet is identified. An error-detecting code representation is generated using the packet sequence number of each packet. A packet that is missing from the plurality of packets is identified. A packet loss pattern associated with the plurality of packets is identified by comparing the error-detecting code representation with a plurality of entries of a high probability loss pattern memory table.