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Schedulability Analysis for Mode Changes in AFDX Network
Lu Xiaoyuan,Li Jian *,Hu Fei
School of Software, Shanghai Jiao Tong University, ShangHai 200240
*Correspondence author
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Funding: RFDP （No.20100073120027）, NNSF（No.61272100）
Opened online:25 December 2012
Accepted by: none
Citation: Lu Xiaoyuan,Li Jian,Hu Fei.Schedulability Analysis for Mode Changes in AFDX Network[OL]. [25 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4500982
 
 
Avionics Full Duplex Switched Ethernet (AFDX) is a new communication standard for an Aircraft Data Network. AFDX networks are used in safety-critical applications that require dedicated bandwidth and provides deterministic Quality of Service (QoS). An aircraft system based on an AFDX network must have the ability to change its functionality over time by means of a mode change. Therefore, it is very important to guarantee the timing requirements in every steady mode, and also during the transition between two different modes. In this paper, a mode change request (MCR) is defined as a sporadic event which triggers a change from one mode to another mode. A Basic Mode Change Model is first described for an AFDX network in order to analyze schedulability of mutual data flows. Then schedulability analysis is done using the proposed model by computing worst case response time for the data flow.
Keywords:AFDX network; Mode Change; schedulability analysis
 
 
 

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