Implementation of hierarchical GAF, a cooperative power saving scheme for sensor networks

Authors:
Takashi Osawa;Tokuya Inagaki;Susumu Ishihara
Affiliations:
Shizuoka University, Hamamatsu, Japan;Shizuoka University, Hamamatsu, Japan;Shizuoka University, Hamamatsu, Japan
Venue:
Proceedings of the 3rd International Conference on Ubiquitous Information Management and Communication
Year:
2009

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Abstract

The sensor nodes of wireless sensor networks are placed in observation areas and transmit data to the observer by using multi-hop communication between nodes. Because these nodes are small and have a limited power supply, they must save power in order to prolong the networks lifetime. In our previous work, we proposed a power saving technique called HGAF (Hierarchical Geographic Adaptive Fidelity) that gives a layered structure to GAF (Geographic Adaptive Fidelity) and takes into account the positions of nodes. We implemented HGAF on MICAz-Motes and evaluated its energy consumption in comparison with that of GAF in an actual environment. The experimental results shows that HGAF can prolong the network lifetime.