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Satellite network transmission control layer jam control method based on forward time delay

A transmission control layer and congestion control technology, applied in network topology, network traffic/resource management, time division multiplexing system, etc., can solve the problem that the RTT value is difficult to be accurately measured and the space communication link transmission delay is large , Congestion control effect is not very ideal and other problems, to achieve the effect of improving bandwidth utilization, reducing transmission delay time, and accurate judgment

Active Publication Date: 2018-03-09
SHENYANG LIGONG UNIV
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Problems solved by technology

[0004] Scholars have proposed many methods to improve TCP Vegas from different aspects such as RTT, α, and β, which can improve the congestion control effect of the link to a certain extent, but in the final analysis, it is necessary to estimate the link through the RTT measurement value. state, and due to the large transmission delay of the space communication link, it is difficult to accurately measure the value of RTT, so that the congestion control effect of the existing technology is not very ideal

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  • Satellite network transmission control layer jam control method based on forward time delay
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  • Satellite network transmission control layer jam control method based on forward time delay

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[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] The present invention proposes a satellite network transmission control layer congestion control method based on forward delay, such as figure 1 shown, including the following steps:

[0050] Step 1. During the data transmission process between the satellite and the ground based on the SCPS-TP protocol, both communication parties enable the TCP timestamp; the TCP timestamp is located in the TCP option, and the format of the timestamp option is as follows: figure 2 shown; timestamp option formats include:

[0051] Type, the value is 8 bytes; length, the value is 10 bytes; sendi...

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Abstract

The invention belongs to the technical field of spatial network data communication, and particularly relates to a satellite network transmission control layer jam control method based on forward timedelay. Since a satellite network is characterized in asymmetric bandwidth, a ground-to-air reverse link is likely to be jammed. In order to solve the problem above, according to the satellite networktransmission control layer jam control method based on the forward time delay, when the reverse link is jammed, a sending window of a sending side is narrowed to reduce the jam, and meanwhile, the throughput rate of a forward ground-to-air link of the network is decreased. According to the satellite network transmission control layer jam control method, different control policies can be adopted according to different jam types of a communication link, and the utilization rate of the network bandwidth is increased.

Description

technical field [0001] The invention belongs to the technical field of space network data communication, and in particular relates to a congestion control method of a satellite network transmission control layer based on forward time delay. technical background [0002] With the rapid development and application of aerospace technology and information technology, the strategic position of space network in the fields of politics, economy and military is increasing day by day, and the construction of space network is imperative. The space network is a variety of satellite systems and space stations on different orbits. According to the principle of maximizing the effective use of space information resources, it is an intelligent system that is interconnected and organically formed. network system. [0003] On the basis of the TCP protocol, the Space Data System Consultative Committee (CCSDS) carried out corresponding research and expansion, and proposed the Space Communicatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W84/06H04J3/06
CPCH04J3/0667H04W28/0289H04W84/06
Inventor 关世杰
Owner SHENYANG LIGONG UNIV
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