Cross-Layer Design for Low-Power Wireless Sensor Node Using Wave Clock

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概要

• 論文の詳細を見る

• 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.

• 2008-11-01

著者

• KAWAGUCHI Hiroshi

  Department of Orthopaedic Surgery, The University of Tokyo

• TAKEUCHI Takashi

  Department of Pediatrics, Wakayama Medical University

• OTAKE Yu

  Department of Computer Science and Systems Engineering, Kobe University

• ICHIEN Masumi

  Graduate School of Science and Technology, Kobe University

• GION Akihiro

  Graduate School of Science and Technology, Kobe University

• OHTA Chikara

  Department of Computer Science and Systems Engineering, Kobe University

• YOSHIMOTO Masahiko

  Department of Computer Science and Systems Engineering, Kobe University

• Ohta Chikara

  Faculty Of Engineering Kobe University

• Yoshimoto Masahiko

  Mitsubishi Electric Corporation

• Kawaguchi Hiroshi

  Kobe Univ. Kobe‐shi Jpn

• Morita Yasuhiro

  Department Of Computer Science And Systems Engineering Kobe University

• Ohta Chikara

  Department Of Computer Science And Systems Engineering Kobe University

• Kawaguchi Hiroshi

  Department Of Computer Science And Systems Engineering Kobe University

• Kawaguchi Hiroshi

  Department Of Chemistry Faculty Of Science Kochi University

• Yoshimoto Masahiko

  Department Of Computer Science And Systems Engineering Kobe University

• Yoshimoto Masahiko

  System Lsi Development Center Mitsubishi Electric Corporation

• Yoshimoto M

  Department Of Computer Science And Systems Engineering Kobe University

• Ichien Masumi

  Graduate School Of Science And Technology Kobe University

• Otake Yu

  Department Of Computer Science And Systems Engineering Kobe University

• Gion Akihiro

  Graduate School Of Science And Technology Kobe University

• Takeuchi Takashi

  Department Of Computer Science And Systems Engineering Kobe University

• Takeuchi Takashi

  Department Of Chemical Engineering Science Yokohama National University

• Kawaguchi Hiroshi

  Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University

• Ohta Chikara

  Department of Computer and Systems Engineering, Kobe University

• Yoshimoto Masahiko

  Department of Computer and Systems Engineering, Kobe University

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