92 results about "Congestion control algorithm" patented technology

The invention provides a real-time streaming media transmission method and system based on a cloud game and a storage medium, and the method comprises the steps: monitoring network state parameters in real time, and generating network state data; dynamically adjusting the resolution, the frame rate and the bit rate of the video stream based on the network state; a redundant data packet is inserted, and the redundancy proportion is adjusted according to the packet loss rate and the jitter, so that the data reliability is enhanced; dynamically adjusting the transmission rate by adopting a congestion control algorithm; dynamically selecting an optimal server node according to a network condition and a server load; audio and video processing tasks are shared through edge computing nodes, and the load and transmission delay of a main server are reduced; setting a self-adaptive decoding buffer area, dynamically adjusting the size of the buffer area according to a network state, and reducing playing lagging; through real-time monitoring, dynamic adjustment and edge collaboration, smoothness is guaranteed, reliability is improved, delay is reduced, efficient load distribution and user experience optimization are achieved, and the method is suitable for real-time streaming media transmission in a cloud game scene.

The invention provides a private domain live broadcast room hotspot prediction and adaptive routing method based on swarm intelligence, and relates to the technical field of data processing, and the method comprises the steps: constructing a dynamic interest community through a dynamic graph neural network, extracting group interaction mode features through a multi-layer graph attention network, and carrying out the group interaction mode features; the method comprises the following steps: generating time sequence correlation features in combination with an improved bidirectional gating loop unit, extracting high-order semantic features, performing hotspot prediction through a multi-task learning framework, constructing a multi-level network topology model according to a prediction result, and performing path exploration in combination with an improved heuristic search algorithm to obtain an optimal transmission path. Flow distribution is carried out through a weighted polling algorithm, a deep learning distributed load balancing controller and a congestion control algorithm are combined, the data transmission rate is dynamically adjusted, and self-adaptive routing pushing of live broadcast content is achieved.

The invention discloses a low-delay adaptive wireless audio transmission method, and relates to the technical field of audio data transmission. The invention relates to a low-delay self-adaptive wireless audio transmission method, which comprises the steps of audio signal acquisition and coding, priority scheduling and time slot allocation, wireless channel transmission and interference resistance, congestion control algorithm optimization, decoding and reconstruction of a receiving end, and dynamic buffer management and delay optimization. According to the method, low-delay transmission of audio signals is ensured through a plurality of technologies such as priority scheduling, time slot allocation, dynamic buffer management and adaptive coding, the stability of audio transmission is remarkably improved by combining congestion control, forward error correction (FEC) and adaptive interference elimination technologies, and even in a complex wireless environment, the stability of the audio transmission is greatly improved. And the audio signal can keep high quality, and the transmission stability is ensured by quickly responding to channel change, eliminating interference, correcting errors, reducing packet loss and retransmission.

Systems and methods are provided for communicating multiple data packet types between user equipment (UE) and a single application, such as an extended reality application. The wireless network is configured such that each data packet type is communicated via a different wireless network slice. When notification of congestion in the wireless network is received for one or more of the wireless network slices, different congestion control algorithms are applied to the congested wireless network slices.

The present invention discloses a data transmission method and a data transmission system for remote takeover of unmanned mining trucks, belonging to the technical field of data transmission. When the data transmission method is executed by the sending end, it includes: obtaining the data to be transmitted and its data type; in response to the data type of the data to be transmitted being video data, encoding and encapsulating the video data in sequence to obtain the original data packet and FEC redundant packet; sending the original data packet and FEC redundant packet to the receiving end; based on the retransmission request sent by the receiving end, sending the original data packet specified by the retransmission request to the receiving end; wherein, the encoding code rate and the transmission code rate sent to the receiving end are obtained by adjusting the code rate by the GCC congestion control algorithm according to the prediction result output by the pre-trained network prediction model, the actual delay sent by the receiving end, and the bandwidth detection result. The present invention can ensure the real-time performance of data transmission and improve the security and controllability of remote takeover.

The invention discloses a congestion control simulation system, a congestion control method and electronic equipment, and the system comprises a receiving module which is used for receiving a service data packet transmitted by a transmitting module, generating a congestion notification signal after detecting network congestion, and transmitting the congestion notification signal to the transmitting module; the sending module is used for generating congestion control event information according to the congestion notification signal, writing the congestion control event information into a congestion control event queue, and performing congestion control response on the congestion control event information in the congestion control event queue based on a programmable congestion control algorithm in a code warehouse of the sending module, and the sending rate of the sending module is adjusted.

The invention discloses a differentiated congestion control method based on RDMA (Remote Direct Memory Access) and a hardware controller system. In the invention, a differentiated congestion control algorithm is provided by using the DSCP, so that the limitation of complete fair regulation and control of the traditional congestion control algorithm is broken through, accurate resource allocation for different flow types is realized, and a more efficient bandwidth utilization rate is achieved under the congestion condition; complete hardening of a congestion controller system is realized, a scheme for dynamically supporting all congestion flows in a network and supporting 1024 concurrent congestion flows at most is provided, and the congestion flows in the network can be managed more efficiently to achieve the purpose of relieving network congestion; the data which is read from the host and participates in operation does not need to be stored in the cache, so that the burden of the host is reduced, the performance reduction caused by bus data reading delay is eliminated, the processing speed of the parallel congestion event is remarkably improved, and the delay of rate feedback is reduced.

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may obtain one or more communication parameters associated with one or more communications to be transmitted by the UE. The UE may transmit the one or more communications based at least in part on a congestion control algorithm selected from a set of candidate congestion control algorithms, the congestion control algorithm selected based at least in part on the one or more communication parameters. Numerous other aspects are described.

The invention discloses an electric power data field-oriented congestion control method, which comprises the following steps of: monitoring a broadband utilization rate, a data packet loss rate and a delay key index in real time in an electric power data field, constructing a network state real-time sensing system, calculating a link flow congestion condition by utilizing a DCQCN congestion control algorithm, and when the flow congestion exceeds a threshold value, executing the congestion control. The method comprises the following steps: compressing data packets at a sending end by adopting a compression algorithm, classifying the data packets, transmitting the data packets to a storage buffer area of the sending end by utilizing a scheduling strategy, carrying out emergency queuing processing on the data packets, adopting a token bucket scheduling algorithm, receiving the compressed data packets by a receiving end, and identifying the data packets subjected to coding compression. And decoding the data packet by using the same decompression algorithm, establishing a feedback mechanism, collecting congestion control effect data in real time, and adaptively adjusting a control strategy according to a feedback result, so that congestion control is continuously optimized. The method can effectively solve the problem that the data transmission rate is reduced due to network congestion and DCQCN failure of a large-scale high-concurrency power data field.

The invention discloses a method for inhibiting jitter of a network tunnel based on a TCP (Transmission Control Protocol), which comprises the following steps of: deploying a VPN (Virtual Private Network) protocol and installing a server and a client under the architecture of Client / Server; and connecting the client and the server through a dialing parameter negotiation process and a tunnel data transmission process by adopting a TCP (Transmission Control Protocol) so as to package, encrypt and transmit a data packet. On the basis of packaging, encrypting and transmitting an IP data packet in a TCP protocol format, a three-way handshake mechanism and a four-way handshake mechanism of the TCP are reserved, and acknowledgement, response and retransmission mechanisms and corresponding complex congestion control algorithms are removed; high-efficiency, high-reliability and low-delay jitter transmission of a network data packet is realized through an FEC forward error correction code on a self-defined VPN protocol, and the method has good Internet environment adaptability.

The invention provides a multi-thread dynamic video transmission technology based on bird repelling application, which is characterized in that real-time transcoding and transmission of multiple paths of high-definition videos can be completed, multi-thread dynamic video transmission is completed in the same window in a man-machine interaction mode, and the video transmission technology adopts coding terminal cache optimization and congestion control algorithm optimization. According to the coding terminal cache optimization, a specific data structure is applied to cache design, the utilization rate of a cache region is increased, and the data circulation speed is increased; according to the congestion control algorithm optimization, by changing a slow start threshold value, the data volume is changed from exponential growth to linear growth, the data fluctuation in the network is reduced, and the probability of packet loss retransmission is reduced; the QT multi-thread technology is adopted, the data transmission efficiency among multiple threads is improved, the data circulation speed is increased, software flash quit caused by memory overflow is avoided, the system delay time is shortened, a client side can conduct multi-channel video transmission at the same time, and the function requirement for real-time multi-channel video transmission under the complex scene of bird repelling application is met.

The present application relates to the technical field of network management. Disclosed are a network cache allocation method, apparatus and device. The method comprises: identifying a congestion control algorithm used when a network device sends traffic, and compiling statistics on occupied bandwidth information of the traffic; on the basis of the congestion control algorithm, the occupied bandwidth information and a cache allocation rule, determining a cache allocation value of the network device; and on the basis of the cache allocation value, allocating cache for the traffic of the network device.

The embodiment of the invention relates to the technical field of photovoltaic communication testing, and discloses a distributed photovoltaic multi-protocol communication testing method and related equipment, and the method comprises the steps: determining whether to switch a communication protocol or not according to a communication quality parameter and a parameter threshold value based on the interference of a network signal attenuation simulator on a communication signal, the method comprises the following steps: caching communication data based on a multi-level data caching mechanism, detecting communication interruption, continuously transmitting interrupted data based on a congestion control algorithm, identifying data loss through a missing data algorithm, and complementing the data through a complementing algorithm. And generating a test report according to the data recovery rate, the time efficiency index, the resource consumption index, the protocol adaptability index, the protocol switching parameter, the cache parameter, the continuous transmission parameter and the data completion parameter. According to the embodiment of the invention, tests of communication protocol switching, data caching, interruption identification, data continuous transmission, data loss identification and complementation in various weak network environments can be simulated, the test precision is high, and the test effect is good.

The invention relates to a congestion control algorithm switching method and device, a chip, equipment, a storage medium and a program product, and the method comprises the steps that a message processing module sends a first event request to an algorithm module, and the first event request comprises the identification information of a to-be-executed first congestion control algorithm; if the identification information of the first congestion control algorithm is different from the identification information of a second congestion control algorithm in the second event request, the algorithm module determines to switch the congestion control algorithm and adds new flow event indication information in the first event request, and the second event request is a previous event request of the first event request; the algorithm module calls a first congestion control algorithm to process the first event request according to the event type contained in the first event request, and initializes algorithm congestion control state information in response to the new flow event indication information; by adopting the switching method of the congestion control algorithm, the switching efficiency of the congestion control algorithm can be improved.

The invention discloses a high-precision flow control protocol simulation system and method for a large-scale network, and relates to the field of network operation simulation services. In the system, a user flow control protocol integration module automatically converts a congestion control protocol algorithm or a flow control protocol provided by a user into a BPF program; and the congestion control protocol simulation module compiles the BPF program into a byte code which can be operated by the Linux kernel, and mounts the byte code to the hook function. The traffic generator generates traffic by using a mounted congestion control algorithm or a traffic control protocol; the data collecting and processing module collects and processes the flow of the flow control protocol simulation experiment by using a database; and the experimental network topology management tool generates a network topology and performs a simulation experiment based on the flow generated by the flow generator. According to the method and the device, the simulation overhead can be reduced, the complex condition in an actual network can be completely and truly reflected, and the applicability and authenticity of a simulation result cannot be limited.

The invention provides a satellite communication method and device, computer equipment and a storage medium, the method is applied to a satellite communication system, the satellite communication system comprises user equipment, a first modem, a second modem and a target server, and the method comprises the following steps: responding to a communication connection request of the user equipment to the target server; creating a satellite communication link between the user equipment and the target server through the first modem and the second modem; and performing data transmission control on the satellite communication link based on a dynamic bandwidth delay product window model and a BBRv2 congestion control algorithm. Based on the scheme of the invention, the transmission performance in a high-delay and high-error-code environment is remarkably improved while the transparent proxy of a satellite link is realized.

The invention relates to a transport stream bandwidth scheduling method, system and device and a medium, and the method comprises the steps: building an MQTT over QUIC connection which at least comprises one transport stream; acquiring data containing an MQTT theme sent by the client application; based on the MQTT theme and the priority of the MQTT theme, distributing a corresponding transport stream for the data to perform data transmission; and based on the MQTT theme priority of the data on each transport stream, allocating corresponding bandwidth resources to each transport stream through a congestion control algorithm and linear programming. According to the method and the device, the linear programming and the congestion control algorithm are applied to the multi-stream transmission scene of the MQTT over QUIC, so that the key data cannot be blocked to be transmitted due to the fact that the bandwidth is consumed by the secondary important data, and the problem of how to reasonably schedule the transmission stream bandwidth based on the MQTT over QUIC protocol is solved.

According to the multi-mode network flow prediction system, the flow detection module detects data parameters of a multi-mode sub-network, the data parameters enter the flow acquisition module after data cleaning, Z-score parameter anomaly detection and chi-square test, anomaly detection and classification are performed according to a threshold value, a change rate and duration of the flow parameters, when flow is abnormal, adjacent sub-network flow parameters are acquired, and the flow of the adjacent sub-network is predicted. Verifying the credibility of the abnormal traffic; the historical traffic acquisition module calls historical traffic data of the same sub-network and sets weights according to the time sequence and the space sequence; the traffic prediction module adopts a time sequence analysis method to predict the traffic trend of the sub-networks, adopts a data fusion algorithm to integrate and process the traffic of the plurality of sub-networks, predicts the total traffic, enters the resource optimization module, and adopts a congestion control algorithm to optimize the performance of the sub-networks and judge the used resources and residual resources of the adjacent sub-networks; and one sub-network link is selected to be distributed to an adjacent sub-network link for optimizing task configuration, so that sub-network flow balancing is realized.

The invention provides a round-trip delay correction method and system based on a reverse path timestamp. The round-trip delay correction method comprises the following steps: acquiring a data packet sending timestamp, an acknowledgement packet sending timestamp and an acknowledgement packet receiving timestamp; a reverse path time delay sample is dynamically stored through a sliding window, and reference time delay is calculated by selecting a minimum value method or a least square regression method according to the sample size; removing reverse path congestion interference in the round-trip delay according to a difference value between the current reverse path delay and the reference delay to obtain a corrected round-trip delay; and the reference time delay of the same source-destination pair is shared under the symmetric topology. According to the method, forward path congestion and reverse path congestion can be accurately separated, misjudgment caused by reverse path congestion of traditional RTT is avoided, and the bandwidth utilization rate and the short flow performance of a congestion control algorithm are improved; through hardware timestamp and dynamic baseline estimation, low-cost deployment without hardware transformation is realized, and the method is suitable for high-precision time delay optimization of the data center network.

The present application relates to a transmission stream bandwidth scheduling method, system, device and medium, wherein the method includes: establishing an MQTT over QUIC connection containing at least one transmission stream; obtaining data containing an MQTT topic sent by a client application; allocating corresponding transmission streams for data transmission based on the MQTT topic and the priority of the MQTT topic; and allocating corresponding bandwidth resources to each transmission stream through a congestion control algorithm and linear programming based on the MQTT topic priority of the data on each transmission stream. Through the present application, it is realized to apply linear programming and congestion control algorithms to multi-stream transmission scenarios of MQTT over QUIC, ensuring that key data will not be blocked from being sent because less important data consumes bandwidth, and solving the problem of how to reasonably schedule the bandwidth of transmission streams based on the MQTT over QUIC protocol.

The embodiment of the present application relates to the technical field of photovoltaic communication test, and discloses a kind of distributed photovoltaic multi-protocol communication test method and related equipment, the method comprises: communication signal interference is simulated based on network signal attenuation simulator, whether communication protocol is switched according to communication quality parameter and parameter threshold value, communication data is cached based on multi-level data caching mechanism, communication interruption is detected, and interrupted data is continued to be transmitted based on congestion control algorithm, data loss is identified by missing data algorithm, data is completed by completion algorithm, and test report is generated according to data recovery rate, time efficiency index, resource consumption index, protocol adaptability index, protocol switching parameter, caching parameter, continuation parameter and data completion parameter.The embodiment of the present application can simulate the test of communication protocol switching, data caching, interruption identification, data continuation, data loss identification and completion under a variety of weak network environments, and has high test precision and good test effect.

The invention provides a communication method and device, and the method comprises the steps: a terminal device can determine the maximum uplink rate and the maximum downlink rate of a current air interface, and notifies a server of the maximum downlink rate, so that after the terminal device and the server establish a communication connection, the maximum uplink rate and the maximum downlink rate of the current air interface can be obtained. The terminal device can send uplink service data to the server according to the maximum uplink rate, and the server can also send downlink service data to the terminal device according to the maximum downlink rate of the terminal device. According to the method, the process that the sending window and the transmission rate are gradually increased through multiple rounds of detection and iteration in the initial stage by a congestion control algorithm used by the terminal equipment and the server can be avoided, so that the transmission delay of uplink service data and downlink service data is reduced, and the communication efficiency between the terminal equipment and the server is improved; and the time for completing the uploading and downloading tasks by the terminal equipment is obviously shortened.

The present invention discloses a method for suppressing jitter in a TCP-based network tunnel. The method comprises deploying a virtual private network (VPN) protocol within a client / server architecture, installing a server and client, and using the TCP protocol to connect the client and server through a dial-up parameter negotiation process and a tunnel data transmission process to encapsulate, encrypt, and transmit data packets. By encapsulating, encrypting, and transmitting IP data packets within the TCP protocol format, the method retains TCP's three-way and four-way handshake mechanisms while eliminating the acknowledgment, retransmission mechanism, and the corresponding complex congestion control algorithms. Furthermore, the method utilizes forward error correction (FEC) codes within a custom VPN protocol to achieve high-efficiency, high-reliability, and low-latency jitter transmission of network data packets, while also offering good adaptability to Internet environments.

The invention provides a congestion control system and a control method for jointly adjusting a sending rate based on queues and time delays under a wireless local area network, relates to the technical field of congestion control of the wireless local area network, and aims to solve the problems that a traditional congestion control algorithm depends on single signal sensing, is lagged in response, cannot adapt to bottleneck dynamic switching of the wireless local area network, and is low in cost. And the transmission delay and the link throughput are difficult to balance. According to the method, after each round of data transmission, a network card driving queue residual length RQ is obtained, a data packet round trip time RTT is monitored, a congestion scene is cooperatively judged, a congestion window cwnd is dynamically adjusted to optimize the transmission rate, and corresponding formulas or strategies are adopted for adjustment according to scenes. According to the method, the problems of one-sided sensing and response lag of a traditional congestion control algorithm can be solved, a scene is judged through RQ and RTT dual-sensing cooperation, cwnd is dynamically adjusted, time delay is reduced when the network is good, throughput is guaranteed when the network is poor, and the performance is superior to Cubic and BBR.

Example methods and network interface devices for congestion control are described. In one example, a network interface device may include a first processing layer and a second processing layer. The first processing layer may receive an event notification from the second processing layer. In response to determination that congestion control is required based on the event notification, the first processing layer may determine an adjustment to a packet forwarding parameter by applying a congestion control algorithm. The congestion control algorithm may be one of multiple congestion control algorithms that the first processing layer is programmable to apply. The first processing layer may generate and send an instruction to the second processing layer to perform the adjustment. Based on the instruction, the second processing layer may configure a component to control packet forwarding towards a physical network based on the second value of the packet forwarding parameter.

The invention discloses a data center network transmission enhancement method based on bandwidth resource management, and belongs to the technical field of network transmission, a data center is provided with physical priority queues, and each physical priority queue comprises a plurality of network transmission flows. Each network transmission flow has a corresponding original congestion control algorithm and ideal round-trip time, and the transmission enhancement algorithm comprises the following steps: for a physical priority queue, performing priority ranking on all the network transmission flows contained in the physical priority queue to form a virtual queue, and allocating independent delay ranges to all the network transmission flows of the virtual queue; measuring the current time delay of each network transmission flow; and judging the size relationship among the current time delay, the time delay range and the ideal round-trip time, and obtaining a transmission rule for real-time network transmission. According to the method, the performance of high-priority traffic is guaranteed, the bandwidth utilization rate of low-priority traffic is improved, meanwhile, hardware does not need to be changed, and the method is easy to deploy and efficient.

A computer system for managing congestion control of packets includes a processor that implements a network traffic manager including a congestion controller and a socket. The congestion controller determines messages parameters for packets of a plurality of messages and assigns a congestion control algorithm setting to each packet based on the message parameters associated with each packet. The socket includes a buffer with a queue having a plurality of threshold queue positions. The congestion controller determines that a subset of packets exceeds at least a first threshold queue position and selects a congestion control action for each packet in the subset based on the assigned congestion control setting for each respective packet and a position of each respective packet relative to the plurality of threshold queue positions.

The application provides a kind of congestion control method and device of cross-data center RDMA network based on near-end control, comprising: in the transmission of cross-data center network data, when the data packet congestion sent by upstream data center to upstream switch is detected in upstream switch, preset congestion control algorithm is used to generate departure notification message, and upstream data center adjusts sending rate according to departure notification message;In downstream data center, when the data packet congestion sent by downstream switch to downstream data center is detected, preset congestion control algorithm is used to generate arrival notification message, and downstream switch adjusts sending rate according to arrival notification message;In downstream switch, long-distance notification message is generated according to the total amount of data packet completed forwarding periodically, and upstream switch adjusts forwarding rate according to long-distance notification message and preset data packet limit number.The method provided by the application is suitable for cross-data center network, the congestion control loop is short, and the fairness between each flow is guaranteed.

The application discloses a high-precision flow control protocol simulation system and method for large-scale networks, and relates to the field of network operation simulation services.In the system, a user flow control protocol integration module automatically converts a congestion control protocol algorithm or a flow control protocol provided by a user into a BPF program; a congestion control protocol simulation module compiles the BPF program into bytecode capable of being run by a Linux kernel and mounts the bytecode at a hook function.A flow generator generates flow by using the mounted congestion control algorithm or flow control protocol; a data collection and processing module collects and processes the flow of the flow control protocol simulation experiment by using a database; and an experimental network topology management tool generates a network topology and performs a simulation experiment based on the flow generated by the flow generator.The application can reduce simulation overhead, completely and truly reflect complex conditions in an actual network, and thus does not limit the applicability and authenticity of simulation results.

A method of improving the utilization of a data communications link is provided. The method includes sending a request, to a round trip time, RTT, meter (304), requesting a measurement of the base round trip time of a data communications flow. The method includes setting an increase parameter of a congestion control algorithm based on the base round trip time measurement received from the round trip time meter in response to the request.