38 results about "TCP acceleration" patented technology

The present invention is a method, system, and computer program that provides secure network communication over a network between a first and a second entity wherein data packets are encrypted and transmitted according to previously exchanged encryption command information and wherein TCP accelerators may be used to effectively accelerate the transmission of the data packets. A method, system, and computer program are also shown that provide secure network communication through encrypting a plurality of payloads and embedding encryption command information for each encrypted payload into an options field of a corresponding protocol header while still allowing TCP accelerators to read the protocol headers and effectively accelerate the transmission of the payloads.

A system and method for transmission control protocol (TCP) acceleration. Incoming acknowledgement (ACK) packets belonging to a TCP session are received, and an upstream queue is searched for queued acknowledgment packets belonging to the same TCP session. If the incoming acknowledgment packet is not a duplicate of the queued acknowledgment packet, one of the queued acknowledgment packets is replaced with the incoming acknowledgment packet in the position in the upstream queue occupied by the oldest of the queued acknowledgment packets. After the oldest queued acknowledgement packet is replaced, remaining acknowledgement packets in the queue are dropped.

A network node is disclosed. The network node includes a host processor. The network node also includes an integrated circuit. The integrated circuit includes a hardware portion configured to perform a first set of TCP acceleration tasks that require a first speed level. The integrated circuit also includes a network protocol processor configured to perform a second set of TCP acceleration tasks that require a second speed level, which is lower than the first speed level. The integrated circuit further includes an embedded processor configured to perform a third set of TCP acceleration tasks that require a third speed level, which is lower than the second speed level. The network node further includes a plurality of data paths configured to couple the integrated circuit to the host processor, the plurality of data paths being implemented based on different protocols.

An embodiment of the invention discloses a congestion control method and a device thereof. The method comprises the steps of determining a current network bandwidth estimated value based on the data volume which are transmitted in a preset time length before the current time; determining whether network congestion occurs; if yes, based on the RTT value at the current time and the current network bandwidth estimated value, updating a slow starting threshold; using the updated slow starting threshold as the initial value of a congestion window size, adjusting the size of the congestion window according to a preset congestion window increase algorithm; and transmitting the data packet based on the adjusted congestion window size. According to the congestion control method and the device thereof, when network congestion occurs, a transmitting end adjusts the congestion window and the slow starting threshold based on the RTT value of the current time and the current network bandwidth estimated value. The current network bandwidth is sufficiently considered in adjusting the slow starting threshold and the congestion window, and furthermore the current network bandwidth resource is sufficiently used, thereby realizing TCP acceleration.

The invention discloses a method for accelerating a TCP (Transmission Control Protocol) under a severe channel. The method is applied to a severe wireless channel, has the advantages of solving the problem of low throughput of the conventional TCP and other TCP improved algorithms in the practical severe wireless application environment, effectively utilizing the channel and greatly increasing the utilization ratio of wireless frequency spectrums, and is suitable for rapid one-to-one, one-to-many even many-to-many communication environments in a plurality of severe application scenes such as armies, emergencies, emergency rescues, disaster reliefs and the like. The method for accelerating the TCP comprises the following steps of: 702, judging whether delay is larger than a first preset value; 703, if the delay judging result is positive, performing fountain code acceleration; 704, if the delay judging result is negative, judging whether the packet loss ratio is larger than a second preset value; 705, if the packet loss ratio judging result is positive, adopting selective retransmission; and 706, if the packet loss ratio judging result is negative, adopting the conventional TCP scheme.

The invention discloses a TCP acceleration method suitable for a satellite link. The method comprises the following steps: TCP communication of a satellite network is divided into three sections: a sender terminal user and a satellite gateway, a satellite gateway and a satellite gateway, a satellite gateway and a receiver terminal user; and ground communication between the terminal user and the satellite gateway is carried out by adopting a TCP, the satellite gateway at a sending end is provided with a network accelerator, and the network accelerator realizes bidirectional acceleration. On onehand, TCP data sent to the terminal user by the satellite gateway responds to TCP acceleration transmission in a protocol pseudo-response mode; on the other hand, an improved TCP is adopted for communication between the gateway and the gateway; the improved TCP is combined with traditional TCP congestion control and data amount-based congestion control modes to carry out congestion judgment on the network; and the problem of congestion misjudgment caused by long delay and high error rate of the link is solved by combining protocol pseudo-response and data amount-based congestion control mechanisms, so that the using efficiency of the TCP is improved.

A computer implemented method and data processing system for the detection and recovery of a network interface card TCP acceleration offload failure. Responsive to a failure to receive an acknowledgement of a transmission control protocol segment containing a request for a transmission control protocol offload function in a network interface card, the transmission control protocol segment is retransmitted without the request for a transmission control protocol offload function. When an acknowledgement of the retransmitted transmission control protocol segment without the request for a transmission control protocol offload function is received, a counter is incremented which indicates a failure of the transmission control protocol offload function. Responsive to the counter exceeding a predefined number of allowed failures, all requests to the transmission control protocol offload function for the network interface card are stopped.

The invention provides a video conference optimization technical method under a transparent mode. According to the invention, video transmission optimization equipment is deployed at the exit of a local area network of participants of a video conference based on a transparent mode, a video stream needing transmission is transmitted from a layer L2 to a layer L3 and processed, the UDP of the video stream is packaged into a TCP packet by a VPN tunneling technology, video transmission in a VPN tunnel is accelerated by a TCP acceleration technology, and therefore, mosaic, jamming, jittering and other problems of the video screen are solved effectively. Meanwhile, the video transmission optimization equipment 103 can guarantee the video transmission link of the video conference, and when the video transmission link of the video conference fails, and the video conference can be switched to other available spare links and is thus not interrupted. According to the invention, there is no need to change the original network structure and routing configuration of the local area network, accelerated and optimized transmission under a TCP (Transmission Control Protocol) is realized, the TCP acceleration and optimization technology is utilized to the maximum, and guarantee to the video transmission link is improved.

The invention discloses a parallel TCP acceleration system, being characterized in that the parallel TCP acceleration system adopts a double-gateway mode, and data transmission is cooperatively completed by gateway access sessions at two ends and an inter-network parallel TCP tunnel, and a server session is successfully created when the TCP acceleration system is started; when the access session load supported by the system is allowed, the server gateway allocates an idle session connection to a new session of the access client gateway, and the idle session connection and the inter-network tunnel form a data link together to complete data transmission between the user and the server; and the system is composed of a system configuration and log recording module, an access session control module, an application data management module and an inter-gateway transmission control module. Through ingenious design, system functions such as redirection of session access, interception of sessiondata, blocking encapsulation, deblocking recombination, parallel transmission between gateways of data and the like are realized, and a good solution is provided for solving the problem of network transmission performance, and the cost is relatively low, and popularization and application are facilitated.

The invention relates to an application method and device of TCP acceleration in an OSU, and the method comprises the steps: recognizing the type of a message received by an Ethernet interface in real time, judging the type of the TCP message when the message is the TCP message, and modifying the window size related value of the TCP message according to the pre-calculated local terminal TCP connection available window size related value and the TCP message type. Since the available window size correlation value of the home terminal TCP connection is calculated according to the currently allocated bandwidth of the OSU connection established by the home terminal and the available cache space of the home terminal equipment, the window size of the TCP message is changed by correspondingly modifying the window size correlation value of the TCP message; the bandwidth of the OSU channel can be fully utilized when the TCP message is transmitted, so that the transmission rate is improved. And finally, according to the type of the TCP message, executing a corresponding sending process on the TCP message, so that the TCP message can be quickly and efficiently transmitted.

The embodiment of the invention provides a TCP acceleration proxy method and device, a satellite ground station and a readable storage medium, and relates to the field of satellite communication. When it is detected that TCP data is cached in the TCP data buffer area, whether the sending buffer queue has the residual length or not is judged; if yes, the size of the remaining length is obtained, the target TCP data are read from the TCP data buffer area according to the size of the remaining length, then the target TCP data are stored in the sending buffer queue, and the target TCP data are sent to the satellite link through the sending buffer queue. And if not, re-judging whether the sending buffer queue has the residual length after the preset time length. In this way, the matched target TCP data is read according to the residual length of the sending cache queue reflecting the residual bandwidth of the satellite link, data backlog is avoided, the data in the sending cache queue can be transmitted by the real-time transmission bandwidth of the satellite link, and user experience is improved.

The invention provides a TCP acceleration method based on a Socket docking with a TOE drive. The method is applied to a TCP acceleration network card based on the Socket docking with the TOE drive. According to the method, a Socket module is dynamically replaced, so that the Socket skips a linux kernel protocol stack and is directly docked with the TOE drive, and operations such as packaging, checking and unpacking of a transport layer, a network layer and a data link layer are realized through FGPA. The method for dynamically replacing the Socket module does not need to modify kernel source codes, and is convenient to use and relatively small in workload.

The embodiment of the invention provides a unilateral transmission control protocol acceleration method and device. The method comprises following steps of obtaining TCP (Transmission Control Protocol) data messages after building a TCP connection, wherein when building the TCP connection, unilateral TCP acceleration is carried out by using globally configured first congestion control algorithms and first parameters; identifying the application types to which the TCP data messages belong; determining second congestion control algorithms and second parameters corresponding to the application types according to the application types and pre-association relationships, wherein the pre-association relationships comprise the association relationships of the application types, the congestion control algorithms and the parameters; updating the first congestion control algorithm and the first parameter into the second congestion control algorithms and the second parameters; and carrying out the unilateral TCP acceleration. According to the embodiment of the invention, on the basis of identifying the application types to which the TCP data messages belong, more suitable congestion control algorithms and parameters are dynamically adjusted for different application types; therefore, different application types are clearly accelerated; and the more excellent transmission performance can be realized.