Wireless sensor network survivability evaluation method based on evolutionary game model

Abstract

The invention relates to a wireless sensor network survivability evaluation method based on an evolutionary game model. The method comprises the following steps of (1), performing model selection from a wireless sensor network model, an attacking model and an epidemic disease model; (2), establishing a survivability model; and (3) evaluating wireless sensor network survivability through evolution dynamics analysis. According to the method of the invention, an influence which is generated by network survivability is analyzed through connectivity of a network cluster head node; the epidemic disease model based on the attack is established by a node attack bearing problem; then a survivability evaluation model based on evaluation gaming is established; a dynamic process is selected by means of a strategy of copying a dynamic equation researching node; an evolution stabilization strategy which is selected by the node strategy is searched; and when the survivability evaluation model for the attacked network reaches an evaluation stable state, performance indexes such as connectivity and stability are used as network survivability evaluation mechanisms, and furthermore verification is performed.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks and relates to mathematical modeling, in particular to a method for evaluating the survivability of wireless sensor networks based on an evolutionary game model. Background technique [0002] With low-cost, low-power consumption, and multi-functional network characteristics, wireless sensor networks are gradually considered as a powerful tool for monitoring physical events. With the advancement of attack technology, the occurrence of malicious attacks is always inevitable; at the same time, system component failures and unexpected accidents also have a great impact on the normal operation of the network system, so the survivability assessment of wireless sensor networks become the focus of research. [0003] At present, there are some documents that study the survivability of wireless sensor networks, and some documents related to the content of this patent are listed below. [0004] Shen...

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Problems solved by technology

However, this literature only considers the cooperation of network nodes, and does not consider the existence of selfish nodes, nor does it consider the connectivity of the network

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