Realization Of Dynamic Management Of Wireless Sensor Networks

With the rapid development and maturity of communication technologies,embedded computing technologies and sensor technologies,researchers have developed a variety of miniature smart sensors that have the ability to sense,compute,and communicate.Wireless sensor network(WSN)made up of many smart micro sensors has aroused great concern.However,the dynamic management of wireless sensor networks is very important because of the computing power and energy limitation of sensor nodes.Firstly,this paper analyzes the characteristics of wireless sensor network,and expounds the energy management method of wireless sensor network from physical part and network part respectively.Then,the network dynamic management technology-routing protocol is studied.In order to reduce the overall energy consumption of the network and balance the load of the network,this paper proposes a Flooding Tree Uneven clustering(FTUC)routing protocol.FTUC protocol is composed of flooding tree phase,clustering phase,inter-cluster communication phase and stable communication phase.In flooding tree phase,the root node of the network center(BS)began to broadcast information,from the root node,the fastest path of neighboring nodes is established.Then,a tree network is formed and the global network value is solved through the tree network.In the clustering phase,the "reference position circle" is proposed,the cluster head node is selected uniformly,and the "competitive radius" is considered to construct an unequal cluster.Among them,clusters with a smaller size are built near the BS and bigger ones are situated further away from the BS.In inter-cluster communication phase,the cluster head node selects the next hop node by the cost function of the adjacent cluster head node.Finally,in the stable communication phase,the cluster member node transfers the data to the cluster head through different time slots,and the cluster head node is transmitted to the optimal next cluster head node to the base station.Also,after a fixed time period,the network will be dynamically rebuilt.Through experimental simulation and comparison test,it is proved that the proposed FTUC routing protocol can realize the dynamic management of wireless sensor networks.By finding the optimal communication path between nodes in the network,the energy consumption of the network is reduced effectively,and the lifetime of the network is extended.Compared with LEACH and UCR routing protocols,this routing protocol has a better ability to balance network load and extend network life cycle.