38 results about "TCP acceleration" patented technology

A service gateway includes a fast path module for processing data packets without using packet buffers and a normal path module for processing data packets using packet buffers. The fast path module receives a service request data packet from a client side session, determines that the service request data packet cannot be processed by the fast path module, and in response, sends the service request data packet to the normal path module. After receiving the service request data packet, the normal path module retrieves a first proxy session record created by the fast path module, where the first proxy session record is associated with a client session record for the client side session, creates a second proxy session record based on the service request data packet and the client session record, and processes the service request data packet according to the second proxy session record.

An architecture for implementing host-based security such that data security may be applied whenever the confidential data leaves a host computer or a networked device. The improved method and architecture may be implemented in a single integrated circuit for speed, power consumption, and space-utilization reasons. Within the integrated circuit, a combination of hardware-implemented, network processor-implemented, and software-implemented functions may be provided. The innovative host-based security architecture may offer line-rate IPSec acceleration, TCP acceleration, or both.

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 TCP acceleration apparatus includes input queues each having a service level and storing at least one session packet list having packets from a same TCP session. The apparatus also includes a distributor connected to the input queues and to the client and configured to retrieve a session packet from a session packet list at a top of an input queue for transmission to the client. The input queue at the service level selected by the distributor moves the session packet list at a top of the input queue to a bottom of the input queue after the session packet is retrieved by the distributor. Acceleration apparatuses including other features, as well as a method, computer program product and system for TCP acceleration are also discussed.

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.

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 discloses a TCP acceleration method suitable for satellite links, comprising: the TCP communication of the satellite network is divided into three sections: a sending end user and a satellite gateway, a satellite gateway and a satellite gateway, and a satellite gateway and a receiving end user; The ground communication between the terminal user and the satellite gateway adopts the TCP protocol for communication, and a network accelerator is set up on the satellite gateway at the sending end, and the network accelerator realizes two-way acceleration. Accelerate the transmission. On the other hand, the improved TCP protocol is used for communication between the gateway and the gateway. The improved TCP protocol combines traditional TCP congestion control and congestion control based on data volume to judge network congestion. The combination of data volume-based congestion control mechanism solves the congestion misjudgment caused by long delay and high bit error rate of the link, thereby improving the utilization efficiency of TCP.

The invention relates to the satellite communication technology, and solves the problems of low TCP transmission rate, complicated acceleration method of the existing TCP and poor maintainability in the existing satellite communication. The technical solution is summarized as: TCP acceleration method based on satellite communication, applied to satellite communication system, the system includes client, satellite modem 1, satellite, satellite modem 2 and server, satellite modem 1 is connected to client and satellite respectively, satellite modem 2 Connect with the server and the satellite respectively, Satellite Cat 1 and Satellite Cat 2 use TCP transparent proxy technology to divide the TCP connection between the client and the server into three sections, and improve the transmission of the satellite link by setting the corresponding TCP parameters of the satellite link performance. The beneficial effect is that the invention improves the transmission rate of the satellite communication, improves the utilization rate of the bandwidth, and the technical solution is simpler, easy to develop, does not update with the update of the TCP protocol, and has high maintainability. The invention is particularly applicable to satellite communication systems.

The invention refers to a method and a communication system for transmitting in either direction data between any two devices in a client layer and / or a transport layer of a communication system. The data transmission is performed according to the transport control protocol, referred to hereinafter as TCP. In order to achieve a high data transmission rate it is suggested that central storage means (12) for buffering the data to be transmitted and a TCP protocol operation block (10) are provided within the communication system, wherein the TCP protocol operation block (10) handles references on the transported data stored in the storage means (12) instead of the data itself. The invention also refers to an embedded acquisition device (1) located between the two devices of the communication system, between which the data is to be transmitted. The acquisition device (1) comprises means adapted for performing the method according to the present invention.