WSN (Wireless Sensor Network) safety routing method based on credit evaluating mechanism

Abstract

The invention provides a WSN (Wireless Sensor Network) safety routing method based on a credit evaluating mechanism. The method comprises the following steps of: obtaining the credit factor of a node according to the communication behavior of the node; performing direct credit evaluation on the node based on the credit factor of the node; performing WSN node credit evaluation combining vertical and transverse analysis according to the information of indirect credit of the third-party node, the history credit of the node, and the like; periodically updating the node credit; and selecting route using the credit as a major standard. The invention has overall analysis and accurate evaluation, can effectively identify the malicious nodes in the network, reduce the credit updating frequency and the network energy consumption, prolong the life cycle of the network, reduce the chance for low-credit node to participate routing, lower the damage of malicious node in the network to the network, improve the routing safety, and improve the whole performance of the WSN safety routing via improvement and creation from two aspects of safety and energy validity.

Description

technical field [0001] The invention relates to a WSN safe routing method and system based on reputation evaluation mechanism. Background technique [0002] WSN (Wireless Sensor Networks) integrates sensor technology, embedded computing technology, distributed information processing technology and communication technology, and is widely used in military, industrial, medical and health fields. It can monitor, perceive, and collect various environmental information in the network distribution area in real time, process the information, and finally transmit it to users who need it. [0003] The security threats faced by wireless sensor network routing are classified according to the source, and there are two main types: external attacks and internal attacks. External attacks can be effectively defended by conventional password security mechanisms, but these conventional security mechanisms cannot effectively defend against internal attacks. As an important supplement to the p...

AI Technical Summary

Problems solved by technology

At present, some WSN security routing methods and systems based on the reputation evaluation mechanism are proposed. The reputation evaluation mechanism used is only based on the observation information of the node itself, or only considers the horizontal analysis. The above methods are used for the WSN security routing method and system. The amount of information in the node reputation evaluation in the network is insufficient, and the analysis is not comprehensive enough, and there are defects of incomplete evaluation or even misjudgment

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