Real-time performance evaluation in WDM networks for avionics
-
摘要: 对航空电子波分复用(WDM,Wavelength Division Multiplexing)网络实时性评估问题,采用网络演算理论,提出了一种周期消息在WDM复杂虚拓扑上多跳端对端最大延迟的计算方法.建立了波长路由器WDM网络模型,分析了消息流端对端延迟的组成部分.针对网络演算理论下的WDM网络通信模型,推导了消息经单节点和多节点波长路由器的最大延迟的计算公式.并结合实际航空电子系统对公式进行了修正,解决了突发度过大的问题.最终得到最大延迟的紧密上限.最后在OPNET仿真环境下验证了计算分析方法的有效性.Abstract: To solve real-time performance evaluation problem in avionics wavelength division multiplexing (WDM) network, a method of end-to-end maximum delay calculation during multihop period message transmitting in WDM virtual topology was provided, based on network calculus analysis theory. A network model of the wavelength routing WDM networks was built, and then the composed parts of the end-to-end delay were analyzed. Concerning the communication model of the wavelength routing WDM networks based network calculus analysis theory, a concisely analytical expression was derived for message maximum delay passing through single and multiple wavelength routers. And then treatments of the expression which resolving the problem of the overextended burst were modified to obtain the closed upper bound of maximum delay according to the actual system of avionics. Finally, the evaluated method was testified by the simulation results on OPNET.
-
Key words:
- wavelength division multiplexing /
- avionics /
- network performance /
- real time systems
-
[1] Gardner R D, Andonovic I, Hunter D K, et al. PHONAV-a photonic WDM network architecture for next generation avionics systems IEEE Aerospace Conference. Snowmass: Institude of Electic and Electronic Engineer, 1999, 2:451-466 [2] Salour M M, Bellamy J C. A WDM optical network for avionics Avionics Fiber-Optics and Photonics, IEEE Conference. USA: ,2005:13-14 [3] Habiby S F. Advances in WDM LAN standards development for aerospace applications Avionics Fiber-Optics and Photonics, IEEE Conference. 2006:20-21 [4] Reardon C, Profumo J, George A D. Comparative simulative analysis of WDM LANS for avionics platforms Military Communications Conference . Washington: ,2006:1-7 [5] Harres D N. Current state and future direction for military aircraft fiber optics networks Digital Avionics Systems Conference. Indianapolis: DASC, 2003:6.B.2-6.1-8 [6] Jessop C N, Jenkins R B, Voigt R J. Routing in an optical local area network using wavelength conversion Avionics Fiber-Optics and Photonics, IEEE Conference.2006:24-25 [7] Mifdaoui A, Frances F, Fraboul C. Full duplex switched ethernet for next generation "1553B"-based applications Real Time and Embedded Technology and Applications Symposium. 2007:45-56 [8] Boyer M, Fraboul C. Tightening end to end delay upper bound for AFDX network calculus with rate latency FIFO servers using network calculus Factory Communication Systems. 2008:11-20 [9] Fan Cen, Tao Xing. Real-time performance evaluation of line topology switched ethernet[J].International Journal of Automation and Computing,2008,5(4):376-380 [10] Cruz R L. A calculus for network delay, part i: Network elements in isolation[J].IEEE Transactions on Information Theory, 1991, 37(1):114-131 [11] Le Boudec, Thiran P. A short tutorial on network calculus I: fundamental bounds in communication networks Circuits and Systems, the 2000 IEEE International Symposium.2000:93-96 [12] 胡晓娅,朱德森,汪秉文.基于网络演算的交换式以太网实时特性分析[J].计算机工程与应用, 2008,44(1):22-24 Hu Xiaoya, Zhu Desen, Wang Bingwen. Real-time performance evaluation in switched ethernet by network calculus[J]. Computer Engineering and Applications,2008,44(1):21-24(in Chinese) -
点击查看大图
计量
- 文章访问数: 2467
- HTML全文浏览量: 59
- PDF下载量: 1252
- 被引次数: 0
下载:
