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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 - PowerPoint PPT Presentation
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EnTracked: Energy-Efficient Robust Position Tracking for
Mobile DevicesMikkel Baun Kjærgaard, Jakob Langdal, Torben Godsk, Thomas Toftkjær
MobiSys2009
MotivationA 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,AccelerometerGPSRadio (3G)
Power ModelInstantaneous model is not accurate,
Example, TOSSIM.
Concerning delay impact,Request delayPower-off delay
Power ModelRequest delay
GPS
Radio
Power ModelPower-off delay
EnTrackedPosition-base application
EnTrackedEnTracked client flow
Detecting Movement Using accelerometer
Estimating SpeedUsing GPS
Error Model
ExperienceEmulation
ExperienceEmulation
ExperienceReal-world validation
ExperienceReal-world validation
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