Analysis on Burst Load Transient Characteristics of Embedded UART-CSMA/CD Control Network

Abstract

Since communication massages in control networks are generated by event-driven way, characteristics of the communication load are intrinsically burst nature. A set of asymptotic approximation equations has been developed in order to calculate the expected values of transmission success rate and transmission delay during the burst load period. Our transient performance analysis has been validated by hundreds of simulation runs using typical system parameters. For a typical burst load model of 100% offered load intensity and 1 - 5 s duration, the calculation error of our analysis of the burst transmission success rate and the burst transmission delay was less than 10% to the simulation result.