The Buffer Size Assignment of AFDX Based on Network Calculus
AFDX (Avionics Full Duplex Switched Ethernet) developed for the Airbus A380 represents a major upgrade in both bandwidth and capability, but guaranteed kinds of service presents challenges to system designers. Scheduling new classes of traffics with different priorities on the same AFDX network is urgently to resolve. However, theres no consideration of how buffer size influence the traffic performance with different priorities, since inappropriate buffer capacity will lead to frame missing or cannot satisfy requirement of real-time. Using network calculus, this paper provides an algorithm to determine the out-port optimal buffer size of End System (ES) with a static Priority Queuing (SPQ) on AFDX. Based on the results of this analysis, an example of ES shows that the algorithm is effective and practical. With this study, we provide a new method to configure buffer size and improve the physical configuration in the development stage.
network calculus optimal buffer size a static priority Queuing, delay
Zhitao Wu Tangqi Lv Xuewang Wang Ning Huang
School of Reliability & System Engineering Beihang University Beijing China
国际会议
贵阳
英文
1319-1323
2011-06-12（万方平台首次上网日期，不代表论文的发表时间）