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Performance of Full Duplex Switched Ethenlet Systems with a Dual Traffic Regulator for Avionic Data Buses  

Kim, Seung-Hwan (Korea Aerospace University, Dept. of Information and Telecommunication Eng.)
Yoon, Chong-Ho (Korea Aerospace University, Dept. of Information and Telecommunication Eng.)
Park, Pu-Sik (Korea Aerospace University, Dept. of Information and Telecommunication Eng., Korean Electronics Technology Institute)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.2, 2009 , pp. 89-96 More about this Journal
Abstract
As increasing the number of digital control devices installed on aircrafts and their transmission speed, various digital data buses have been introduced to provide reliable and high-speed characteristics. These characteristics of avionics data bus are highly related on the fault-tolerant performance which can make minimize jitter and loss during data transfer. In this paper, we concerned about a new traffic shaping scheme for increasing the reliability of Avionics Full Duplex Switched Ethernet (AFDX) systems based on ARINC 664 standard. We note that the conventional AFDX with a single regulator per virtual link system may produce aggregated traffics as the number of virtual links increasing. The aggregated traffic results in large jitters among frames. To remedy for the jitter and loss of data, we propose a dual regulator scheme for the AFDX system. The purpose of the additional regulator is to additionally regulate aggregated traffics from a number of per virtual link regulators. Using NS-2 simulator, we show that the proposed scheme provides a better performance than the single regulator one. It is worthwhile note that the proposed AFDX with Dual Regulator scheme can be employed to not only aircraft networks but other QoS sensitive networks for robot and industrial control systems.
Keywords
AFDX; Regulator; Virtual-link; Token-bucket; Avionic Data Buses;
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  • Reference
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