| ISBN: 1-4244-1025-8
|
| ISBN: DOI: 10.1109/MOBIQ.2007.4450984
|
| |
| description |
Many location-based systems rely on fine-grained tracking of mobile
objects that determine their own locations with sensing devices like
GPS receivers. For these objects, energy is a very valuable and
limited resource. A distance-based reporting protocol can be
employed to reduce the energy they consume by sending position
updates. However, the energy required for position sensing has not
been considered in the past. In this paper, we study how the
resulting energy consumption from both sensing and update operations
can be reduced for distance-based reporting. We show that
significant savings are achieved by sending position updates earlier
than actually required. For uniform movement, we derive the minimal
power consumption analytically. Subsequently, two novel online
heuristics are proposed that control the sending of position updates
at runtime. Their effectiveness is validated by extensive
simulations.
|
| publisher |
University of Stuttgart : Collaborative Research Center SFB 627
(Nexus: World Models for Mobile Context-Based
Systems)
|
| IEEE Press
|
| type |
Text
|
| Article in Proceedings
|
| source |
In: Proceedings of the Fourth Annual International Conference on
Mobile and Ubiquitous Systems: Networking and Services (MobiQuitous
2007); Philadelphia, PA, USA, August 6-10, 2007
|
| contributor |
Institut für Parallele und Verteilte Systeme, Verteilte
Systeme
|
|
| subject |
Computer-Communication Networks (CR C.2)
| |