Energy efficient operating mode assignment for real-time tasks in wireless embedded systems

Chun Jason Xue, Zhaohui Yuan, Guoliang Xing, Zili Shao, Edwin Sha

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Minimizing energy consumption is a key issue in designing real-time applications on wireless embedded systems. While a lot of work has been done to manage energy consumption on single processor real-time system, few work addresses network-wide energy consumption management for real-time tasks. Moreover, existing work on network-wide energy consumption assumes that the underlying network is always connected, which is not consistent with the practice in which wireless nodes often turn off their network interfaces in a sleep schedule to reduce energy consumption. In this paper, we propose solutions to minimize network-wide energy consumption for real-time tasks with precedence constraints executing on wireless embedded systems. Our solutions take the radio sleep scheduling of wireless nodes into account when adjusting the execution modes of processors. We also propose a runtime dynamic energy management scheme to further reduce energy consumption while guaranteeing the timing constraint. The experiments show that our approach significantly reduces total energy consumption compared with the previous work.
Original languageEnglish
Title of host publicationProceedings - 14th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2008
Pages237-246
Number of pages10
DOIs
Publication statusPublished - 15 Oct 2008
Event14th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2008 - Kaohsiung, Taiwan
Duration: 25 Aug 200827 Aug 2008

Conference

Conference14th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2008
CountryTaiwan
CityKaohsiung
Period25/08/0827/08/08

ASJC Scopus subject areas

  • Computer Science Applications
  • Hardware and Architecture
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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