Cross-Layer Design for Low-Power Wireless Sensor Node Using Wave Clock
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- TAKEUCHI Takashi
- Department of Computer Science and Systems Engineering, Kobe University
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- OTAKE Yu
- Department of Computer Science and Systems Engineering, Kobe University
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- ICHIEN Masumi
- Graduate School of Science and Technology, Kobe University
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- GION Akihiro
- Graduate School of Science and Technology, Kobe University
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- KAWAGUCHI Hiroshi
- Department of Computer Science and Systems Engineering, Kobe University
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- OHTA Chikara
- Department of Computer Science and Systems Engineering, Kobe University
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- YOSHIMOTO Masahiko
- Department of Computer Science and Systems Engineering, Kobe University
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Abstract
We propose Isochronous-MAC (I-MAC) using the Long-Wave Standard Time Code (so called “wave clock”), and introduce cross-layer design for a low-power wireless sensor node with I-MAC. I-MAC has a periodic wakeup time synchronized with the actual time, and thus we take the wave clock. However, a frequency of a crystal oscillator varies along with temperature, which incurs a time difference among nodes. We present a time correction algorithm to address this problem, and shorten the time difference. Thereby, the preamble length in I-MAC can be minimized, which saves communication power. For further power reduction, a low-power crystal oscillator is also proposed, as a physical-layer design. We implemented I-MAC on an off-the-shelf sensor node to estimate the power saving, and verified that the proposed cross-layer design reduces 81% of the total power, compared to Low Power Listening.
Journal
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E91-B (11), 3480-3488, 2008
The Institute of Electronics, Information and Communication Engineers
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Details 詳細情報について
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- CRID
- 1390282679351696384
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- NII Article ID
- 10026833366
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- NII Book ID
- AA10826261
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- ISSN
- 17451345
- 09168516
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed