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EnTracked : Energy-Efficient Robust Position Tracking for Mobile Devices. Mikkel Baun Kjærgaard , Jakob Langdal , Torben Godsk , Thomas Toftkjær MobiSys2009. Motivation. A system that, The estimation and prediction of system conditions and mobility

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entracked energy efficient robust position tracking for mobile devices

EnTracked: Energy-Efficient Robust Position Tracking forMobile Devices

MikkelBaunKjærgaard, JakobLangdal, TorbenGodsk, Thomas Toftkjær

MobiSys2009

motivation
Motivation
  • A system that,
    • The estimation and prediction of system conditions and mobility
    • Schedules position updates to both minimize energy consumption and optimize robustness.
  • Platform: Nokia N95,
    • Accelerometer
    • GPS
    • Radio (3G)
power model
Power Model
  • Instantaneous model is not accurate,
    • Example, TOSSIM.
  • Concerning delay impact,
    • Request delay
    • Power-off delay
power model1
Power Model
  • Request delay

GPS

Radio

power model2
Power Model
  • Power-off delay
entracked
EnTracked
  • Position-base application
entracked1
EnTracked
  • EnTracked client flow
detecting movement
Detecting Movement
  • Using accelerometer
experience
Experience
  • Emulation
experience1
Experience
  • Emulation
experience2
Experience
  • Real-world validation
experience3
Experience
  • Real-world validation
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