Gangneung-Wonju National University Industry Academy Cooperation Group

Gangneung-Wonju National University Industrial Academy Cooperation Group

Hyung-Bong Lee

Tae-yun Chung

Dae-iL Kim

Ui-Min Jung

A method for updating firmware of a plurality of nodes constituting a wireless sensor network is disclosed. The wireless sensor network includes a server, a gateway and the plurality of nodes. The firmware to be updated is transmitted from the server through the gateway to an uppermost node. The firmware is sequentially transmitted to the plurality of nodes from the uppermost node to a lowermost node using wireless communication, and the respective nodes, which have received the firmware, record the firmware in their own memory. When the recording of the firmware is completed in all the nodes, boot programs of the respective nodes are run and the firmware, stored in the memory, is recorded in program memory, the firmware recorded in the nodes are executed, and the nodes constitute a new network while communicating with the peripheral nodes thereof.

Method for updating firmware of sensor nodes on the wireless sensor network

A routing method of a wireless network system is provided. Paths of the wireless network system are divided into down-stream and up-stream paths. The up-stream paths are reset for each period, or whenever a network is changed, or whenever transmission of data fails more than a predetermined number of times. Accordingly, it is possible to secure an average lifetime of a wireless network system by previously preventing a bottleneck from occurring at a specific node, increase a transmission speed of data by reducing the hop count to the sink node connected to the information collector, and reduce power consumption of a battery.

Growing community of inventors

Seoul, South Korea

Hyung-Bong Lee