In this paper, an improved scheme for model-based control of networked discrete time systems is presented by introducing a gain matrix to the reset state stage of the model when the network is switched on. This improvement introduces additional freedom in designing the controller and can increase the length of the period for updating the model state over the networks. Also, the plant can be stabilized by a controller based on a model with lower order than that of the plant. A sufficient condition and a necessary condition for the global exponential stability of the closed-loop system are derived for the case of the available plant full state, and when the plant full state is not available, a sufficient condition is obtained. The results suggest simple procedures for designing state/output feedback controllers for the systems. Numerical examples show the feasibility and efficiency of the proposed methods.