Gangneung-wonju National University Industry Academy Cooperation Group

Gangneung-wongju National University Industrial Academy Cooperation Group

Lae-Jeong Park

Sung-Wook Park

Tae-yun Chung

Jung-Ho Moon

Han-Su Chung

Tae Yun Chung

Sun-San Choi

Provided is a terminal node device including: a communication module communicating with an external sink node device and another terminal node device; sensor modules; and a control unit allowing the terminal node device to be operated while allowing the terminal node device to transition into one of the initial, synchronous, and leave states. In the initial state, the control unit scans a received message; if a beacon message is received from a sink node device, the control unit transitions into the synchronous state; and if not for a predetermined time, the control unit transitions into the leave state. Accordingly, if a beacon message is received from the sink node device, the terminal node device transitions into the synchronous state to constitute a server-based wireless sensor network; and if not, the terminal node device transitions into the leave state to constitute an independent sensor network.

Terminal node device and wireless sensor network system using the terminal node device

The present invention is to provide a method and apparatus for multiplexing a sync node and a gateway of a wireless sensor network, which is capable of allowing communication of the wireless sensor network to be normally performed by multiplexing paths of the sync node and the gateway of the wireless sensor network even in the case where any one of the sync node and the gateway abnormally operates and by transmitting upstream data and downstream data through a path selected among the duplexed paths according to characteristics of the wireless sensor network.

Apparatus of multiplexing data transmission path for wireless sensor network

Growing community of inventors

Gangneung-si, South Korea

Lae-Jeong Park