Analysis Method of End-to-End Delays on an AFDX Avionic Network

Inspired by the Response Time Analysis(RTA) technique,this paper presents a new method for the estimation of end-to-end delay bounds in AFDX networks.The method is based on the theory of deterministic network calculus.Firstly,the model of data frame element transmission is provided,which determines each network node for network transmission.The longest delay of each node along the transmission path is analyzed,thus the end-to-end delay bounds can be calculated by adding of transmission delay of each node.The queuing delay of multiplexing is the main variable delay,which is affected by net configuration and multiplexing rule.The methods for analyzing delay of first-in first-out strategy and static priorities strategy are described in detail.Finally,an example is provided,which shows that the method is effective for analyzing delay bounds of AFDX.