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LTP asynchronous accelerated retransmission strategy-based deep space file transfer method

A file transmission and retransmission technology, applied in the field of data transmission, can solve problems such as low efficiency of data transmission methods, achieve the effect of shortening file transmission time, reducing dependence, and improving file transmission efficiency

Active Publication Date: 2016-11-09
ZHAOQING UNIV
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Problems solved by technology

[0020] The purpose of the present invention is to provide a deep space file transfer method based on the LTP asynchronous accelerated retransmission strategy, aiming to solve the problem of low efficiency of the existing data transfer method

Method used

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  • LTP asynchronous accelerated retransmission strategy-based deep space file transfer method
  • LTP asynchronous accelerated retransmission strategy-based deep space file transfer method
  • LTP asynchronous accelerated retransmission strategy-based deep space file transfer method

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Embodiment 1

[0055] Example as Figure 1-7 shown.

[0056] figure 1 It is a schematic diagram of the file transfer time and asynchronous accelerated retransmission process of the deep space file transfer method based on the LTP asynchronous accelerated retransmission strategy provided by the present invention.

[0057] This solution provides a deep space file transfer method based on the LTP asynchronous accelerated retransmission strategy, including the following steps:

[0058] A. The sender sends data;

[0059] B. The receiving end receives the data, and the receiving end generates a retransmission information signal RS before receiving all the data;

[0060] C. The sending end receives the retransmission information signal RS;

[0061] D. The sending end detects the retransmission information signal RS, if there is data that needs to be retransmitted in the retransmission information signal RS, then enter step E, if there is no data that needs to be retransmitted in the retransmiss...

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Abstract

The present invention belongs to the data transmission field and relates to an LTP asynchronous accelerated retransmission strategy-based deep space file transfer method. According to the LTP asynchronous accelerated retransmission strategy-based deep space file transfer method of the invention, based on an LTP single-session retransmission mode, an ahead-of-time acceleration retransmission strategy initiatively triggered by a receiving end is adopted, namely, in the initial transmission stage of red data, the receiving end generates a receiving report according to an actual receiving condition, a retransmission process is started in advance. Based on asynchronously accelerated retransmission, lost data can be recovered as soon as possible, so that file transmission efficiency can be improved; the dependence of retransmission startup on EORP data segments can be decreased, and so that file transfer time can be shortened. This strategy is very suitable for short-connection time, long-connection and high-bit error rate conditions.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a deep-space file transmission method based on an LTP asynchronous accelerated retransmission strategy. Background technique [0002] With the advancement of science and technology, people's eyes are not limited to the earth itself, but are more aimed at space. One of the difficulties that humans need to overcome in the process of conquering space is how to communicate between the earth and outer space, especially the earth and deep space (the distance from the earth is about equal to or greater than 2×10 6 km space) communication between. [0003] Due to the very long distance, deep space communication is very different from ground communication. The main challenges are: first: long distance and variable delay; second: intermittent link; third: high and variable Bit error rate; fourth: uplink and downlink asymmetry. [0004] At present, the main communication methods used inc...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16H04L29/08
CPCH04L1/0009H04L1/0078H04L1/1657H04L67/06
Inventor 吴海涛梁迎春陈英俊陈庆华李云鹤
Owner ZHAOQING UNIV
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