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Method for improving transmission efficiency of IP over CCSDS

A transmission efficiency, IP data technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of low transmission efficiency, uncontrollable delay, fixed bandwidth transmission mismatch, etc., to eliminate filler frames and ensure real-time The effect of improving the transmission efficiency

Pending Publication Date: 2021-11-05
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the characteristics of IP network data such as burst, uncontrollable delay, and network jitter, the downlink of IP data does not match the fixed bandw

Method used

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  • Method for improving transmission efficiency of IP over CCSDS
  • Method for improving transmission efficiency of IP over CCSDS

Examples

Experimental program
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Embodiment Construction

[0028] The following will be described below with reference to the drawings to improve the method of increasing the IP Over CCSDS transmission efficiency, and this embodiment is implemented in the preparation of the present invention, the detailed embodiment and the specific operation process are given. However, the scope of the invention is not limited to the following examples, and those skilled in the art can modify and moisture without alter the scope of the spirit and content of the present invention.

[0029] Please refer to figure 1 A method of improving IP over CCSDS transmission efficiency, based on improved design in the IP over CCSDS protocol conversion device, including: (1) In the network interface of the IP over CCSDS Conversion device, according to real-time data and delay data The network data is subcontract; (2) Integrate network secure in the IP over CCSDS protocol conversion device, and increase the large-capacity delay IP cache for network delay data; (3) In ne...

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Abstract

The invention discloses a method for improving the transmission efficiency of an IP over CCSDS. The method comprises the following steps: sub-packaging on-satellite network data at a network interface of IP over CCSDS protocol conversion equipment according to real-time data and delay data; integrating a network solid memory in an IP over CCSDS protocol conversion device, and additionally developing a large-capacity delay IP cache for network delay data; carrying out constant-speed IP data transmission between the network solid memory and the high-capacity delay IP cache by using an LVDS (Low Voltage Differential signal) interface, and feeding back the queue state of the current IP cache in real time by using a special direct connection channel; and the network solid memory quickly and smoothly adjusts the LVDS transmission rate according to the current IP cache queue state. According to the method, network subpackage and large-capacity solid storage integration are carried out in the IP over CCSDS protocol conversion equipment, fluctuation and burst transmission of external delay network data is converted into IP constant-speed transmission of an LVDS interface in the equipment, and priority scheduling of an output interface is combined, so that the real-time performance of key data transmission is ensured, and the transmission efficiency of the IP over CCSDS is greatly improved.

Description

Technical field [0001] The present invention relates to the field of IP Over CCSDS transmission technology, and more particularly to a method of improving IP over CCSDS transmission efficiency. Background technique [0002] With the development of space technology, the internal system of spacecraft is complex, and the data transmission rate is continuously improved. More and more spacecrafts begin to implement device interconnection using IP technology and IP networks. To achieve the heaven and earth integrated network communication, the protocol conversion device needs to be configured, and the IP data is converted to the CCSDS protocol data adapted to the heaven and earth link transmission based on the IP Over CCSDS protocol standard. Therefore, IP OVER CCSDS transmission efficiency is critical to the transmission performance of the heavens and earth. [0003] Both spacecraft pairs or digital links are fixed bandwidth, in order to ensure the synchronization of the link, transmi...

Claims

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Application Information

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IPC IPC(8): H04L12/835H04L29/06H04L47/30
CPCH04L47/30H04L69/08
Inventor 朱浩文叶恒罗鹏罗唤霖史汝鑫张震孙文洁朱剑辉
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM