Data transmission control method for satellite network

A technology of data transmission control and satellite network, which is applied in the field of data transmission of satellite network, can solve the problems of not being able to control the transmission rate, not considering the correlation, and having a great impact on performance, so as to enhance the ability to resist random packet loss and improve Average Congestion Window Size, Effect of Reducing and Keeping Smooth

Active Publication Date: 2016-01-06
NAT UNIV OF DEFENSE TECH
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A particularly aggressive solution calculates a very large congestion window value after an RTT. This value exceeds other factors that limit the sending rate such as the buffering capacity of the data receiving end, and cannot achieve the effect of controlling the sending rate, but instead aggravates the occurrence of packet loss events.
The improvement scheme of the traditional TCP slow start is used. The slow start process is affected by RTT, which lasts for a long time, has a great impact on throughput, and performance is greatly affected by the timing of packet loss.
[0007] 2. The comprehensiveness of the improvement plan is not strong enough, and the interrelationship of the factors affecting each other is not enough
If the improvement is only aimed at RTT or packet loss, the improved performance is restricted by the unimproved part; the window reduction factor and the window retention time are treated separately, and the improvement mechanism is studied separately, without considering the correlation between them, it is impossible to find the most excellent combination

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission control method for satellite network
  • Data transmission control method for satellite network
  • Data transmission control method for satellite network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as figure 1 Shown, the satellite network-oriented data transmission control method of the present invention, its steps are:

[0030] S1: At the beginning of the transmission, set the initial value of the smaller congestion window, quickly increase the congestion window at a speed that exceeds the doubling of each round-trip delay (RTT), and quickly detect the size of the congestion window that the link bandwidth can support;

[0031] In this process, further optimization makes the round-trip delay and the optimization target meet a fixed ratio, and the window opening speed is optimized to the speed under the proportionally reduced round-trip delay.

[0032] S2: When a packet loss event occurs, select a value slightly smaller than the size of the current congestion window as the target window. The current congestion window...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a data transmission control method for a satellite network. The data transmission control method comprises the following steps: S1: at a transmission beginning stage, setting an initial value of a smaller congestion window, quickly adding congestion windows at a speed larger than one time of each round-trip delay RTT time, and quickly detecting the size of congestion windows capable of being supported by a link bandwidth; and S2: in the case of a packet loss event, selecting a value smaller than the size of a current congestion window as a target window; reducing the current congestion window for a certain proportion, then increasing the current congestion window according to a cubic function curve, and when the difference between the congestion window and the target window is smaller, the growth speed is very slow, and the congestion window is maintained for a long time near the target window. The data transmission control method provided by the invention has the advantages of improving the data transmission performance.

Description

technical field [0001] The invention mainly relates to the field of satellite network data transmission, in particular to a satellite network-oriented data transmission control method. Background technique [0002] Satellite network refers to a communication network system composed of artificial earth satellites in various orbits. The core equipment of the satellite network is suspended in space, and its wireless electromagnetic signal covers a wide range. The communication range is less affected by the distance, and the geographical environment of the earth's surface has a weak impact on the communication process. It has an important position in both military and civilian fields. The limitation of the satellite network lies in its indelible link bit error rate (BER) and long round-trip time delay (RTT). Geostationary satellite link bit error rate (BER) of 10 -7 level, the resulting link packet loss rate (PER) is about 0.1-1%, the satellite-to-ground delay is about 260ms,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/807H04L47/27
CPCH04L47/27
Inventor 虞万荣吴纯青苏金树赵宝康毛席龙陈一骄陈庭平
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products