EnTracked: energy-efficient robust position tracking for mobile devices

An important feature of a modern mobile device is that it can position itself. Not only for use on the device but also for remote applications that require tracking of the device. To be useful, such position tracking has to be energy-efficient to avoid having a major impact on the battery life of the mobile device. Furthermore, tracking has to robustly deliver position updates when faced with changing conditions such as delays due to positioning and communication, and changing positioning accuracy. This work proposes EnTracked -- a system that, based on the estimation and prediction of system conditions and mobility, schedules position updates to both minimize energy consumption and optimize robustness. The realized system tracks pedestrian targets equipped with GPS-enabled devices. The system is configurable to realize different tradeoffs between energy consumption and robustness. We provide extensive experimental results by profiling how devices consume power, by emulation on collec...

• Type: Conference
• Year: 2009
• Where: MOBISYS
• Authors: Mikkel Baun Kjærgaard, Jakob Langdal, Torben Godsk, Thomas Toftkjær
• Keywords: Device Consumes Power, MOBISYS 2009, Modern Mobile Device, Position Tracking, Wireless Networks