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Method for reducing transmission control protocol (TCP) message loss in space information network

A space information network and message loss technology, applied to electrical components, transmission systems, etc., can solve the problems that the TCP protocol cannot adapt to the space environment, the low utilization rate of link resources, and the increase of feedback link transmission volume, etc., to improve Space environment adaptability, reducing the probability of TCP retransmission, and reducing the effect of bandwidth pressure

Inactive Publication Date: 2016-03-30
10TH RES INST OF CETC
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Problems solved by technology

[0010] The present invention aims at the problems of low link resource utilization rate, unreliable message transmission, and increased feedback link transmission volume in the space environment of high bit error, long time delay, and intermittent connection of the standard TCP / IP protocol. The characteristics of the space information network provide a method that can improve the throughput of the TCP protocol, effectively reduce the loss of TCP data packets, and reduce unnecessary retransmissions, so as to improve the problem that the standard TCP protocol cannot adapt to the space environment

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  • Method for reducing transmission control protocol (TCP) message loss in space information network

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, according to the present invention, a sending storage module is added at the sending end of the TCP protocol; and the connection timing between nodes is preset in the spatial information network where the movement rules of the nodes can be followed. Since the trajectories of various celestial bodies and artificial satellites in the space network are known, and the link interruption caused by celestial body occlusion is predictable, the connection timing between nodes can be preset in the space information network where the movement rules of nodes can be followed. Define the connection timing of any node A and any node B as a function P of time t AB (t), define P AB (t)=1 means that node A and node B are in the state of link connection at time t, define P AB (t)=0 means that node A and node B are in a state of link disconnection at t...

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Abstract

The invention provides a method for reducing transmission control protocol (TCP) message loss in a space information network. According to the method, data packet loss can be effectively reduced, link throughput can be improved, and unnecessary retransmission of a transmitting end in case of link disconnection is prevented. The method is implemented as follows: a transmitting storage module is added at a transmitting end of the TCP; according to a known motion track of a man-made satellite and a predictable characteristic of link disruption due to celestial body blocking, a communication time sequence PAB (t) between any nodes A and B is pre-arranged in the space information network with a node motion rule that can be followed, wherein when PAB (t) is equal to 1, nodes A and B are in a link communication state at the time t, when PAB (t) is equal to 0, nodes A and B are in a link disconnection state at time t; while the network operates, for any time t0, a sending node A firstly verifies the value of PAB(t0), if PAB (t0) is equal to 1, a data packet is sent to a target node B; and if PAB (t0) is equal to 0, the data packet is cached in the storage module of the TCP, and the cached data packet is extracted from the cache and is recovered and sent at next time when PAB (t) is equal to 1 and t is equal to t1.

Description

technical field [0001] The invention relates to a method for improving the performance of a transmission control protocol (TCP) in the technical field of space information network communication protocols, in particular to a method for adding a sending storage module in the TCP protocol of the transport layer to reduce the loss of TCP messages. Background technique [0002] With the rapid development of electronic and wireless communication technology, the network has penetrated into all aspects of human society's production and life. High-speed dynamic node development. Especially in recent years, countries around the world have paid attention to and developed space resources, and the rapid development of aerospace technology has provided good material and technical support for the establishment and development of the space information network system. The space information network system will surely become the future network important part of the world. However, the spatia...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08
CPCH04L69/161H04L69/326
Inventor 周文炯徐会忠杨海峰
Owner 10TH RES INST OF CETC
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