Beacon node reputation-based wireless sensor network safety locating method
A wireless sensor and beacon node technology, applied in the field of network information security, can solve the problem of difficulty in judging the reliability of beacon node location information
Inactive Publication Date: 2011-10-19
BEIJING UNIV OF TECH
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Problems solved by technology
Since the reputation value of beacon nodes and the reliability of the location information they provide are difficult to judge, insider attacks are more concealed and destructive to wireless sensor node positioning
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[0024] Embodiments of the present invention will be described in detail below with reference to the above description and accompanying drawings. The implementation of the present invention is based on the following prerequisites and network assumptions:
[0025] a. Each node in the network has a unique ID number to distinguish its identity; b. Each beacon node with a legal identity has a global shared key k; c. The hash value H corresponding to each beacon node ID number (ID) is public to legitimate beacon nodes in the network.
[0026] 1. Implementation instructions for the stage where the beacon node sends its own location information to surrounding nodes
[0027] In the network initialization stage, 20 sensor nodes are randomly deployed in a rectangular area of 650m*600m as unknown nodes to be located and 15 beacon nodes, and a shared key k is assigned to each legal beacon node. The communication radius of the node is set to 200m, and the specific steps at this stage ar...
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The invention relates to a beacon node reputation-based wireless sensor network safety locating method belonging to the technical field of computer network safety. Aiming at the problem of the reliability judgment of information provided by a beacon node in the locating method, a locating method for reputation evaluation of a beacon node is provided, the estimation can be carried out from two aspects of identity and behavior of the beacon node respectively, a trustworthy beacon node is screened out, and the location is carried out by utilizing the reliable information provided by the beacon node. The method comprises the following steps: the beacon node transmits self position information to peripheral nodes; adjacent beacon nodes carry out the reputation evaluation to the beacon node transmitting the information; the reputation evaluation of the beacon nodes, given by the adjacent beacon nodes, are synthesized, and the beacon nodes are ranked from top to bottom according to reputation values; and an unknown node selects the position information provided by the beacon nodes with the reputation value higher than a threshold value to carry out self-position estimation. In the invention, the reputation value of the beacon node can be effectively evaluated, so as to screen out more reliable position information for the location of the unknown node and improve the reliability of a location result.
Description
technical field [0001] The present invention relates to a wireless sensor network security positioning method based on the reputation of beacon nodes, specifically a method for selecting trustworthy beacon nodes by evaluating the reputation of beacon nodes, and using the reliable location information provided by them for The positioning of unknown nodes can improve the security of positioning in wireless sensor networks, and belongs to the field of network information security. Background technique [0002] Wireless sensor networks are widely used in military and national defense, environmental monitoring, emergency rescue and disaster relief and other fields. In these application fields, the location information of sensor nodes is very important and needs to be returned together with other information collected by nodes. Therefore, the self-positioning of nodes becomes It is one of the most basic functions and services of sensor networks, and it is also a key technology amo...
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Login to View More IPC IPC(8): H04W12/00H04W64/00H04W84/18H04L29/06H04L9/08H04W12/60
Inventor 何泾沙张婷张旸李晓会
Owner BEIJING UNIV OF TECH