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. 2020 Dec 27;21(1):123.
doi: 10.3390/s21010123.

A Novel Epidemic Model for Wireless Rechargeable Sensor Network Security

Affiliations

A Novel Epidemic Model for Wireless Rechargeable Sensor Network Security

Guiyun Liu et al. Sensors (Basel). .

Abstract

With the development of wireless rechargeable sensor networks (WRSNs ), security issues of WRSNs have attracted more attention from scholars around the world. In this paper, a novel epidemic model, SILS(Susceptible, Infected, Low-energy, Susceptible), considering the removal, charging and reinfection process of WRSNs is proposed. Subsequently, the local and global stabilities of disease-free and epidemic equilibrium points are analyzed and simulated after obtaining the basic reproductive number R0. Detailedly, the simulations further reveal the unique characteristics of SILS when it tends to being stable, and the relationship between the charging rate and R0. Furthermore, the attack-defense game between malware and WRSNs is constructed and the optimal strategies of both players are obtained. Consequently, in the case of R0<1 and R0>1, the validity of the optimal strategies is verified by comparing with the non-optimal control group in the evolution of sensor nodes and accumulated cost.

Keywords: cyber security; optimal control; stability analysis; wireless rechargeable sensor network.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Figure 1
Figure 1
Flow diagram of the Susceptible, Infected, Low-energy, Susceptible (SILS) Model.
Figure 2
Figure 2
Evolution of sensor nodes when R0<1. Different colors indicate that the curves start at different boundaries. So do Figure 3, Figure 4 and Figure 5.
Figure 3
Figure 3
Variation of S, I and LI nodes when R0<1.
Figure 4
Figure 4
Evolution of sensor nodes when R0>1.
Figure 5
Figure 5
Variation of S, I and LI nodes when R0>1.
Figure 6
Figure 6
The influence of C.
Figure 7
Figure 7
Evolution of sensor nodes under four different cases.
Figure 8
Figure 8
Overall cost.
Figure 9
Figure 9
Variation of control variables.

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