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Method of accelerating tcp based on satellite communication

A satellite communication and satellite communication system technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of complicated TCP acceleration methods, low TCP transmission rate, and poor maintainability, so as to improve TCP transmission rate, The effect of improving usage efficiency and easy development

Active Publication Date: 2021-04-27
四川安迪科技实业有限公司
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  • Application Information

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Problems solved by technology

[0007] The present invention provides a TCP acceleration method based on satellite communication to solve the technical problems that the TCP transmission rate is low in the existing satellite communication, and the existing TCP acceleration method is complicated and the maintainability is poor.

Method used

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  • Method of accelerating tcp based on satellite communication

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Embodiment

[0033] Specific examples are given below.

[0034] The satellite communication system in this example is as figure 1 As shown, it includes the client, satellite modem 1, satellite, satellite modem 2 and server, satellite modem 1 communicates with the client and satellite respectively, and satellite modem 2 communicates with the server and satellite respectively.

[0035] The TCP acceleration method based on satellite communication in this example is applied to the satellite communication system in this example, and Satellite Maoyi performs the processing according to the following steps:

[0036] Step 1, Satellite Cat 1 converts the destination IP and destination port of all TCP messages into the IP and designated port of Satellite Cat 1 in the PREROUTING chain of kernel Netfilter through the DNAT command of iptables;

[0037] Step 2, the satellite cat one opens the socket of TCP to monitor the designated port of the satellite cat one, and receives the TCP message through the...

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Abstract

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.

Description

technical field [0001] The invention relates to satellite communication technology, in particular to the TCP acceleration technology of satellite communication. Background technique [0002] In the satellite communication system, when the TCP protocol is used to transmit data, the round-trip delay of the satellite is 600ms, and the transmission MTU is 1500, then its theoretical maximum rate is: This is the theoretical maximum rate calculated according to the TCP protocol under the 600ms round-trip delay model. Due to the large delay in satellite communication, the TCP transmission rate cannot increase. Even if the bandwidth is set to 2M, the TCP transmission rate is still around 38KB / s, and the satellite bandwidth cannot be effectively utilized. [0003] In order to solve the above problems, NASA proposed the SCPS scheme, in which the SCPS-TP protocol is a TCP enhanced transmission technology, which implements the SCPS-TP protocol at the application level by means of "dece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L29/06H04L29/08H04B7/185H04L45/74
CPCH04B7/1851H04L45/74H04L69/162H04L69/163H04L69/22H04L67/563H04L67/568
Inventor 李喜生
Owner 四川安迪科技实业有限公司
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