Abstract
Cyber physical systems are complex systems which monitor, sense or interact with the environment, gather information with the help of different types of sensors or mobile devices, propagate the sensed data to a processing unit via WAN, LAN, MANET, VANET or overlay network, the processing unit process, analyze and store the received data, and based on the nature of the data or input send instructions to actuators to alter or try to alter the environment, or raise alarm, or send notifications to concerned devices or peoples already registered with the CPS for a particular type of event. Designing such a complex system is not an easy task and there are a number of important factors that should be taken care while designing these systems. A good number of studies have already focused on these requirements but for a particular type of cyber physical systems. In this work some of the general requirements are highlighted. These requirements are more of a MUST TO HAVE requirements rather than GOOD TO HAVE.