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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (7): 325578.doi: 10.7527/S1000-6893.2021.25578

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Priority-driven generalized real-time performance analysis of avionics network

YU Sifan, HE Feng, XIONG Huagang   

  1. School of Electronics and Information Engineering, Beihang University, Beijing 100083, China
  • Received:2021-03-29 Revised:2021-09-07 Published:2021-05-26
  • Supported by:
    (]National Natural Science Foundation of China (62071023)

Abstract: Switching networks make use of the structure of air separation switching to increase the overall communication capacity remarkably, and have therefore become a typical means for interconnecting new generation avionics systems. Generalized network calculus can be used to predict the real-time performance of switching networks according to typical network features. However, generalized network calculus lacks the means to analyze the real-time performance of the networks which distinguish high and low priority. On the basis of abstracting the features of the priority control strategy for switched networks, the priority-driven generalized network calculus models the high and low priority streams using the network calculus theory. Under the boundary constraint of the burst envelope function, the end-to-end delay-bound analysis of different priority proportions is completed, and the priority ratio scheme is given. In the typical airborne network topology, the model proposed is verified experimentally with a randomly generated case. The results show that compared with the calculus using detailed traffic configuration, the calculus proposed is 33% more effective, and can realize performance prediction of airborne switched networks based on network features.

Key words: switching network, priority, network feature, network calculus, delay analysis, real-time perfomancehttp

CLC Number: