Virus Propagation In Wireless Sensor Networks With Media Access Control Mechanism

The Internet of Things has opened a new era of wireless communication technology.As one of the basic technologies of the Internet of Things,wireless sensor network is one of the most important challenges in the application of network security,and it is also one of the most concerned issues.Among the various security threats facing the network,virus attacks are among the best.Network virus refers to the malicious code spread by wireless communication technology that can hinder the normal operation of the network.It can use the vulnerability to self-replicate to initiate attacks without human intervention.It has the characteristics of fast attack speed,strong destructiveness,wide range,and great harm.Therefore,it is necessary to understand the propagation characteristics of viruses in wireless sensor networks in depth,and then formulate efficient control mechanisms to prevent virus attacks and improve network security.In this regard,this paper uses complex network theory to study the characteristics of virus propagation in wireless sensor networks with media access control(MAC)mechanism,and on this basis,formulates virus control mechanisms,identifies nodes that play a key role in virus propagation,and formulates strategies to suppress the spread of viruses and improve network security.This paper mainly studies from the following two aspects.First,study the commonality of viruses in wireless sensor networks.Considering the limited communication capabilities of sensor nodes and the communication between nodes affected by the MAC communication mechanism,this paper proposes a SIR propagation model based on the MAC mechanism to study the propagation dynamics of viruses in wireless sensor networks with limited communication range,and focuses on studying the scale of virus-infected nodes under the action of MAC mechanisms based on different listen/sleep duty cycles.At the same time,it also conducts in-depth research from four aspects:the number of active nodes,the average degree of nodes,the communication radius of nodes and the virus infection ability,and explores the propagation characteristics of viruses in wireless sensor networks with MAC mechanism in multiple dimensions and all aspects.Second,formulate a virus control mechanism and study the influence of virus transmission influencing factors on the virus control mechanism.First,according to the DCB-AHP algorithm to identify the key nodes in the network,on this basis,a control mechanism based on the self-breaking edges of the key nodes is proposed.Then,according to the virus transmission characteristics of wireless sensors,the influence of factors such as node average degree,node communication radius,virus infection probability,and the presence or absence of MAC mechanism on the suppression effect of virus control mechanism are studied.