Volume 35 Issue 4
Apr.  2009
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Zhou Qiang, Xiong Huagang, Zhang Xiaolin, et al. Packet scheduling for AFDX switch under hard time constraints[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(4): 449-452. (in Chinese)
Citation: Zhou Qiang, Xiong Huagang, Zhang Xiaolin, et al. Packet scheduling for AFDX switch under hard time constraints[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(4): 449-452. (in Chinese)

Packet scheduling for AFDX switch under hard time constraints

  • Received Date: 18 Apr 2008
  • Publish Date: 30 Apr 2009
  • AFDX(avionics full duplex switched Ethernet) is a switched interconnection designed to meet requirements related to the ever increasing demand for civil aircraft such as A380. A packet scheduling scheme on hard real-time performance in AFDX switch was studied. Based on the dual-priority-message scheduling principle of AFDX protocol, an analytical expression of its key parameter was derived, and a new packet scheduling scheme(DP-LM, dual priority-load match) under hard real time constraints was proposed. The different factors such as scheduling progress, key parameter and load-match method between dual-priority-message scheduling and single-priority-message one were deeply compared, and example resultants indicate that low priority message can impact on real time transmission for high priority one.

     

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