Research On Topology Control Of Wireless Sensor Networks Based On Fuzzy Control

In the wireless sensor network and even in the wireless network, Topology control is a very important technique, which has a significant impact on the performance and indicator of the network in WSN. In addition, topology control Which has always been one of the hotpoint studied by the researchers at home and abroad.Nowadays, there are many topology control algorithms claimed to be energy efficient, which are either trying to find appropriate transmit power or good network topology. However, more aspects should be both considered in the practical applications, This paper proposes a novel topology control method called HFLTC(Hybrid Fuzzy-logic Topology Control) which introduced XTC method to build links. It is based on the fuzzy control and optimized with Link Quality Evaluation Model for power control. XTC algorithm is a topology control algorithm which is proximity-graph-based algorithm., HFLTC algorithm refer to selection rules of XTC algorithm select link,and introduced a new Evaluation Model of link quality, Also it redefine the selection standard. HFLTC algorithm is divided into three stages:the neighbor discovery phase,the node broadcast message with maximum transmit power.neighbor information table of node has been built initially.link selection stage,it reduce the redundant nodes and optimize the network structure by using the link quality assessment mode to define the select criteria.dynamic maintenance phase, it based on fuzzy control model to adjust power level,and record every neighbor nodes with different transmit power levels in local, achieving node-wide power control by combining routing algorithm.In the experiment portion.Simulation under the environment of MATLAB and Omnet++ are utilized to prove HFLTC algorithm, firstly. Constructing different network topologies are constructed by using MATLAB, It provided to different network simulation environment for subsequent experiments then,By using OMNeT++ and a feedback mechanism, realizing fuzzy control simulation, the experiment checked card energy efficient and reliability of data transmission.for HFLTC algorithm. The results show that the method combing the topology and power control, which can save the average energy consumption of the network, but also extend the life cycle of network.