On-satellite Ethernet traffic dynamic control method

Abstract

The invention provides an on-satellite Ethernet traffic dynamic control method, which achieves a dynamic control effect of network communication traffic through state feedback of a receiving cache ofa receiving end and dynamic calculation of a transmitting rate of a transmitting end in an application layer of a TCP / IP (Transmission Control Protocol / Internet Protocol) four-layer structure. In theon-satellite Ethernet communication process, a balance rate of original network receiving and transmitting is broken due to device aging or faults, and a receiving cache of a data receiving end feedsback corresponding traffic control information to a data transmitting end by triggering threshold signals with different capacities. The data transmitting end adopts a binary approximation method to continuously and dynamically calculate and correct a transmitting rate according to the traffic control information fed back by the data receiving end until a preset dynamic calculation frequency or anetwork receiving and transmitting rate reaches the balance again.

Description

technical field [0001] The invention relates to a method for dynamically controlling Ethernet traffic on a star. Background technique [0002] At present, the application fields of spacecraft are becoming more and more extensive, and the types and quantities of the corresponding on-board data are also increasing rapidly. A large amount of data needs to be transmitted between various modules on the star, and the traditional serial port and low-speed Ethernet communication cannot meet the requirements. Requirements for real-time transmission of large amounts of data on the planet. In order to cope with the large amount of data communication between the stand-alone modules, the high-speed Gigabit Ethernet is adopted by the stand-alone on the star. [0003] In Ethernet communication, when the sending rate of the data sending end and the data receiving and processing rate of the data receiving end reach a balance, all the transmitted data can be completely received and processed...

AI Technical Summary

Problems solved by technology

The space environment where the spacecraft works is complex and harsh, and the performance of the electronic system may decline for a long time, resulting in a weakening of the processing capability of the data receiving end, thereby reducing the data receiving rate and destroying the balance of the original Ethernet data sending and receiving rate

If the receiving end is too late to receive and process the sent Ethernet data, important data will be lost, which will severely damage the missions that the spacecraft needs to perform

Images