Node reputation evaluation method and system for wireless sensor network

A wireless sensor and reputation evaluation technology, applied in wireless communication, network topology, electrical components, etc., can solve problems such as node interference and attack, node reliability and security differences, and failure to meet actual needs, so as to ensure security and reliability effect

Active Publication Date: 2017-07-04
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

Due to the complex situation of the actual network, nodes are easily affected by abnormal events such as channel fading, interference and attacks, resulting in differences in the reliability and security of nodes, which will affect the transmission, energy consumption and security performance of the network
Therefore, roughly dividing node reputation into two reputation levels cannot meet actual needs

Method used

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  • Node reputation evaluation method and system for wireless sensor network
  • Node reputation evaluation method and system for wireless sensor network
  • Node reputation evaluation method and system for wireless sensor network

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Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementation manners.

[0041] Such as figure 1 As shown, a flow chart of a node reputation evaluation method for a wireless sensor network provided by an embodiment of the present invention may include the following steps:

[0042] Step 101: Obtain the historical interactive observation results of the nodes, and obtain the Dirichlet prior probability distribution;

[0043] Step 102: Obtain the observation result of this interaction of the node, and obtain multiple probability distributions;

[0044] Step 103: According to the prior probability distribution obtained in step 101 and the multinomial probability distribution obtained in step 102, the Dirichlet posterior probability distribution of the node is obtained;

[0045] S...

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Abstract

The invention discloses a node reputation evaluating method and system for a wireless sensor network and belongs to the technical field of the wireless sensor network. The node reputation evaluating method for the wireless sensor network includes the steps that historical interaction observation results of nodes are obtained, and therefore Dirichlet prior probability distribution is obtained; interaction observation results of the nodes at this time are obtained, and therefore multinomial probability distribution is obtained; according to the prior probability distribution and the multinomial probability distribution, the Dirichlet posterior probability distribution of the nodes is obtained; according to the Dirichlet posterior probability distribution, the local reputation value of the nodes is calculated; according to the local reputation value, reputation evaluating is performed on the nodes. According to the node reputation evaluating method and system for the wireless sensor network, the behaviors of the nodes can be accurately evaluated in detail so that reliable nodes can be selected for information transmission, and safety and reliability of the network can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a node reputation evaluation method and system of a wireless sensor network. Background technique [0002] Wireless Sensor Network (WSN for short) is composed of a large number of cheap micro-sensor nodes deployed in the monitoring area, and forms a multi-hop self-organizing network system through wireless communication. And process the information of the perceived objects in the network coverage area, and send it to the observer. [0003] With the rapid development of wireless sensor networks, in order to adapt to different application requirements, higher and higher requirements are put forward for the reliability and security of the network. Especially when wireless sensor networks work in harsh environments, such as environmental detection, resource exploration, underwater operations, etc., the reliability and security of the network will face great challeng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W84/18
Inventor 陈岚肖夏李莹
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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