A low-power link speed control method on distributed real-time systems

Yusuke Kumura, Kazutoshi Suito, Hiroki Matsutani, Nobuyuki Yamasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Distributed real-time systems that consist of multiple tasks with time constraints implemented on multiple processors have been used in various embedded systems, such as humanoid robots. These processors are interconnected with a real-time network, such as Responsive Link, in which data rate of each channel can be changed individually and dynamically. In this paper, we propose a low-power communication technique for distributed real-time systems. The power consumption is reduced by slowing down the data rate of communication link while satisfying the time constraints by exploiting the slack time, which is the difference between the arrival time of data and the deadline. We first measured power consumption of Responsive Link with various data rates and then implemented a real-time network simulator using the measured power values. We also implement a run-time communication mode change mechanism on Responsive Link and discuss the feasibility. Simulation results show that the proposed low-power packet transfer technique reduces the power consumption by up to 53.46% with a negligible degradation on the schedulability.

Original languageEnglish
Title of host publicationProceedings - IEEE 7th International Symposium on Embedded Multicore/Manycore System-on-Chip, MCSoC 2013
PublisherIEEE Computer Society
Pages49-54
Number of pages6
ISBN (Print)9780768550862
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 IEEE 7th International Symposium on Embedded Multicore/Manycore System-on-Chip, MCSoC 2013 - Tokyo, Japan
Duration: 2013 Sep 262013 Sep 28

Publication series

NameProceedings - IEEE 7th International Symposium on Embedded Multicore/Manycore System-on-Chip, MCSoC 2013

Other

Other2013 IEEE 7th International Symposium on Embedded Multicore/Manycore System-on-Chip, MCSoC 2013
CountryJapan
CityTokyo
Period13/9/2613/9/28

Keywords

  • Distributed systems
  • Low power
  • Real-time communication link
  • Real-time systems
  • Responsive Link
  • Speed control

ASJC Scopus subject areas

  • Hardware and Architecture

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  • Cite this

    Kumura, Y., Suito, K., Matsutani, H., & Yamasaki, N. (2013). A low-power link speed control method on distributed real-time systems. In Proceedings - IEEE 7th International Symposium on Embedded Multicore/Manycore System-on-Chip, MCSoC 2013 (pp. 49-54). [6657903] (Proceedings - IEEE 7th International Symposium on Embedded Multicore/Manycore System-on-Chip, MCSoC 2013). IEEE Computer Society. https://doi.org/10.1109/MCSoC.2013.25