Electronics and Telecommunications Research Institute

Yao Zhiying

Yoonmee Doh

Cheol Sig Pyo

Jong-Suk Chae

Cheol-Sig Pyo

Sun-Joong Kim

Noseong Park

Sung Joong Kim

The present invention relates to a sensor network having node architecture for performing trust management of neighboring sensor nodes, and to an adaptive method for performing trust management of neighboring sensor nodes for monitoring security in the sensor network. The sensor network includes a base station and a plurality of sensor nodes for reporting sensed information packets to the base station through radiofrequency signals relayed by other sensor nodes. A judge sensor node may have a trust estimator in its node architecture to evaluate trustworthiness of a neighboring suspect sensor node by determining a personal reference and receiving personal references from jury sensor nodes. Based on the trustworthiness of the suspect, the judge may modify a route for transmitting packets to the base station.

Wireless sensor network and adaptive method for monitoring the security thereof

A sensor node of a wireless sensor network includes a first sensor node module for generating and processing, when it is activated, a first sensing signal to detect occurrence of an event based on the first sensing signal; and a second sensor node module for generating and processing a second sensing signal, when it is activated, to monitor state transition of the event based on the second sensing signal. Further, when the occurrence of the event is detected, the first sensor node module is inactivated and the second sensor node module is activated.

Sensor node of wireless sensor networks and operating method thereof

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Daejon, South Korea

Yao Zhiying