A new perspective proposal for preemptive feedback scheduling

A novel way to formalise the problem of preemptive feedback scheduling is presented, based on discrete-time linear dynamic systems. Despite its extreme simplic- ity, the obtained formalism is suitable both for representing (and therefore dynamically analysing) existing scheduling methods, and for synthesizing new ones in a totally system- theoretical perspective. Also, by further specialising the class of systems employed, the modelling complexity can be scaled and tailored to the particular problem to be addressed. Examples are reported to explain and support the above claims, including some (simple) new scheduling policies.