Research On Topology Evolutionary Model Of Wireless Sensor Networks Based On Complex Network Theory

Wireless sensor network(WSN)is a multi-hop wireless ad-hoc network which consists of a large number of tiny sensor nodes.Scholars concern the topology generation mechanism and self-organizing evolutionary algorithm a lot,cause which is the key means to the communication and overlay,topology control,routing and positioning of WSN.Nowadays,it has become a hot topic in the field that using the complex network theory to analysis the topology dynamic characteristics of WSN at this stage.This article mainly from the following three aspects to discuss:Firstly,we paraphrase the main research directions of the subject which based on the research background and significance of the wireless sensor network.Meanwhile,several characteristic measurement parameters and basic network models of the complex network theory are introduced.And then we focus on the wireless sensor network topology structure of the complex network characteristics,which works on the relevant application of the complex network theory is introduced into the WSN topology evolution studies.Secondly,based on the weighted scale-free network model(BBV),a WSN weighted scale-free network topology model is constructed which based on the residual energy of the node.By theoretical analysis,we know this model is a scale-free network doing well in fault-tolerant and enery balance.Then MATLAB simulation also shows the validity of this theoretical derivation.Finally,considering the actual phenomenon of WSN,we construct a new WSN energy-aware linearity extended Evolution Model.In the connection strategy of the scale-free network topology evolution,the energy preference growth and the link linear compensation mechanism are introduced to construct the node competition and degradation,link disconnected and reconnected WSN scale-free fault tolerant topology.The degree distribution of the model is analyzed by the average field theory,and the validity of the model is verified.And the influence of node energy distribution on WSN topology is analyzed on the basis of this model.Then,a fast growth energy-aware linear extended WSN model is proposed to solve the problem that the scale-free network is vulnerable to the deliberate attack.The simulation results show that the model has strong intrusive behavior in the face of deliberate attack.