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Energy-efficient voltage scheduling of peripheral components on wireless sensor nodes
Publikationstyp
Conference Paper
Date Issued
2014-08-21
Sprache
English
Author(s)
Start Page
860
End Page
865
Article Number
6881308
Citation
2014 IEEE International Conference on Communications Workshops, ICC 2014: 6881308, 860-865 (2014)
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
IEEE
Much effort has been put into optimizing the energy-efficiency of wireless sensor nodes, but existing work exclusively focuses on the transceiver and the processing unit. Nevertheless, the peripheral energy consumption may dominate that of the entire node. We introduce the concept of a dynamically scalable peripheral voltage supply: Even for peripheral devices, a lower voltage level leads to a lower energy consumption. Each peripheral requires a different minimum operating voltage, but switching the voltage level consumes energy as well. We combine theory and practice to present an algorithm weighing off the benefits of a downscaled voltage level against the switching overhead, i. e., for calculating an optimal peripheral voltage schedule. Our approach is capable of self-parameterization and has been implemented and tested on a prototype, saving up to 47% of peripheral energy as compared to existing solutions.
DDC Class
004: Informatik
600: Technik