Adaptive service quality priority scheduling method facing time triggering Ethernet

Abstract

The present invention provides an adaptive service quality priority scheduling method facing a time triggering Ethernet. The adaptive service quality priority scheduling method facing the time triggering Ethernet performs real-time monitoring of a link through a link observation module, performs calculation and statistics of message information of different priorities and dynamically gives out the configuration of the related parameters of the system to allow the system to make out real-time regulation of the link, and in the condition of guaranteeing high-priority data priority forwarding, the bandwidth speed limitation rate of each flow is adaptively regulated to reach the purpose of more reasonably employing the bandwidth in the condition of different links.

Description

technical field [0001] The invention belongs to the technical field of information network, and in particular relates to a time-triggered Ethernet-oriented self-adaptive quality of service priority scheduling method. Background technique [0002] At present, human exploration of space is mainly carried out by launched spacecraft, which are mainly composed of artificial earth satellites, manned spacecraft and space probes, which are further refined to form spaceflight for various applications. It includes military reconnaissance satellites for military applications, various meteorological and communication satellites for civilian use, and space stations that provide scientific research and test platforms. The development of aerospace technology has become the embodiment of a country's comprehensive national strength. [0003] The development of today's spacecraft is more and more obvious in the direction of modularization. The so-called modularization means that the spacecra...

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Problems solved by technology

[0005] The development of modular spacecraft has promoted the possibility of large and complex spacecraft design. In the time-triggered Ethernet used on the ground, the network has limited support for the number of terminals and the quality of service for the transmitted non-real-time message data. Can meet the stable and reliable operation of complex spacecraft

[0006] (2) Bandwidth utilization problem

[0007] Traditional current limiting means that the speed limit rate has been configured before the system is running. However, for flows with different priorities, the link bandwidth cannot be fully used by pre-configuration while ensuring that the total speed limit rate remains unchanged. This leads to severe packet loss for some data with large transmission requirements.

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