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In this paper,the stabilization problem is considered for the class of wireless networked control systems (WNCS).An indicator is introduced in the WNCS model.The packet drop sequences in the indicator are represented as states of a Markov chain.A new discrete Markov switching system model integrating 802.11 protocol and new scheduling approach for wireless networks with control systems are constructed.The variable controller can be obtained easily by solving the linear matrix inequality (LMI) with the use of the Matlab toolbox.Both the known and unknown dropout probabilities are considered.Finally,a simulation is given to show the feasibility of the proposed method.