HGAF: A Power Saving Scheme for Wireless Sensor Networks

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 network's lifetime. We propo...

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Bibliographic Details
Published inInformation and Media Technologies Vol. 4; no. 4; pp. 1086 - 1097
Main Authors Inagaki, Tokuya, Ishihara, Susumu
Format Journal Article
LanguageEnglish
Published Information and Media Technologies Editorial Board 2009
Subjects
Adaptive structures
Density
Networks
Observers
Power supplies
Sensors
Simulation
Wireless communication
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Summary: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 network's lifetime. We propose HGAF (Hierarchical Geographic Adaptive Fidelity) to give a layered structure to GAF (Geographic Adaptive Fidelity), a power saving technique using location information in sensor networks. Simulation results reveal that HGAF outperforms GAF in terms of the number of survived nodes and packet delivery ratio when the node density is high. The lifetime of dense and randomly distributed sensor networks with HGAF is about 200% as long as ones with GAF.
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ISSN:1881-0896
1881-0896
DOI:10.11185/imt.4.1086