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Method for operating a wireless sensor network

A wireless sensor, sensor network technology, applied in network topology, wireless communication, transmission system, etc., can solve the problems of eliminating network nodes, potential limitation, difficulty and so on

Active Publication Date: 2013-09-25
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In both cases described, the possibilities of network operators are very limited
Due to the lack of knowledge of the keys used by the aforementioned sensor nodes, it is difficult to integrate new nodes into the encrypted data transmission established in the network, or to exclude network nodes from this network

Method used

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  • Method for operating a wireless sensor network
  • Method for operating a wireless sensor network
  • Method for operating a wireless sensor network

Examples

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Embodiment Construction

[0030] figure 1 An example of an embodiment of the method according to the invention is shown schematically in which a new node is to be integrated into an existing sensor network. In sensor networks, a large number of sensor nodes are distributed in a predefined environment. exist figure 1 In a), a part of the environment of a sensor network covered by sensor nodes is shown. Dark dots represent individual sensor nodes that are able to exchange information with each other over the radio channel. As is common in practice, all data is transmitted encrypted.

[0031] figure 1 The situation shown in a) shows the network at a certain moment when the network has been running stably for a certain time. There may be situations where a node fails (eg, due to hardware problems or battery drain) and the network operator judges the coverage of an area to be insufficient. like figure 1 As shown in b), the operator will decide to place new nodes in the area in order to improve the co...

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Abstract

A method for operating a wireless sensor network, wherein the sensor network includes a multitude of distributed sensor nodes for sensing data within a pre-definable environment, and wherein the sensor nodes can exchange information via encrypted data transmissions over a radio Channel is-regarding the fact that during the operational phase of the network the Performance of changes in the network, in particular the composition of the sensor nodes that are integrated in the network, is allowed in a flexible way-characterized in that a subset of sensor nodes of the network is manipulated in order to establish a shared secret (x) by transferring a defined information to the sensor nodes of the subset over a secure out of band (OOB) Channel.

Description

technical field [0001] The present invention relates to a method of operating a wireless sensor network comprising a large number of sensor nodes for sensing data, said sensor nodes being distributed in a predefined environment and said sensor nodes being able to communicate on a radio channel Exchange information with each other through encrypted data transmission. Background technique [0002] This method has been known to be used in practice for some time due to the increasing importance of sensor networks, especially in the area of ​​environmental monitoring, such as the analysis of weather, humidity distribution or water pollution, or the measurement of surface temperature, Track motion patterns, control large industrial sites, and more. The list of possible fields of application can be extended almost arbitrarily. [0003] The individual sensors of a sensor network are sensor nodes that communicate with each other wirelessly and usually consist of a sensing element, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/04H04W12/06
CPCH04L63/08H04W12/04H04L63/06H04L63/18H04W12/08H04W84/18H04W12/041H04W12/0431H04W12/0433
Inventor 乔奥·吉劳米盖尔·马丁·洛佩兹
Owner NEC CORP
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