Abstract:

A new algorithm based on the binary sequence scheduling is proposed in order to achieve the reliable transmission of the massive real-time data streams in a short time on the SpaceFibre onboard network and meet the quality of service (QoS) requirements for different space tasks. The algorithm generates the corresponding binary scheduling sequence according to different traffic characteristics of the onboard network. The tradeoff between the scheduling of the complex data flows and the bandwidth requirements of different data traffics can be well solved, and the QoS function under the framework of the SpaceFibre protocol can be realized. Finally, the delay performance analysis and simulation results of the algorithm are given, which show that the binary sequence scheduling mechanism generated by the algorithm has better flexibility and certainty on the transmission delay.

Key words:  Onboard network, Quality of service (QoS), Binary sequence, SpaceFibre