Datalife Time Analysis in RDM+ Real-Time Communication Protocol

Real-time systems are being used increasingly in control applications such as in automobiles, aircraft and process control. Real-time communication protocols are designed in order to satisfy basic requirements of these systems such as reliability, safety and in time message delivery. One of the most important requirements of such critical systems is in time update of real-time data which has to be facilitated by these protocols. CAN (Controller Area Network) is one of the important and common protocols which is widely used in such an environment. RDM (Round Data Mailer) and RDM+ are two new protocols that have been designed to fulfill the requirements of distributed real-time systems. In this paper, we are trying to compare RDM+ and CAN protocols based on data lifetime which is the time interval between two consecutive updates of a real-time datum. The obtained results show that RDM+ performs better and provides fresher data to the consumers.