  The present work analyzes the feasibility of obtaining a single controller
(robust), with theoretical guarantees of stability and performance, valid for a
total set of network configurations in designed the controller for an uncertain
success probability obtain the protocol for Energy-Efficiency in Networked
Control System NCS. In particular, this work investigates the performance
degradation, in terms of the $\mathcal{H}_{\infty}$ guaranteed cost, between
optimal controller design (precisely known probability) and the sub-optimal
controller design (robust to probability uncertainties). The feasibility of the
proposed methodology is validated by a numerical example.
