Mobile Information Systems

Mobile Information Systems / 2005 / Article

Open Access

Volume 1 |Article ID 172540 |

MoonBae Song, Sang-Won Kang, KwangJin Park, "On the Design of Energy-Efficient Location Tracking Mechanism in Location-Aware Computing", Mobile Information Systems, vol. 1, Article ID 172540, 19 pages, 2005.

On the Design of Energy-Efficient Location Tracking Mechanism in Location-Aware Computing

Received28 Jun 2005
Accepted28 Jun 2005


The battery, in contrast to other hardware, is not governed by Moore's Law. In location-aware computing, power is a very limited resource. As a consequence, recently, a number of promising techniques in various layers have been proposed to reduce the energy consumption. The paper considers the problem of minimizing the energy used to track the location of mobile user over a wireless link in mobile computing. Energy-efficient location update protocol can be done by reducing the number of location update messages as possible and switching off as long as possible. This can be achieved by the concept of mobility-awareness we propose. For this purpose, this paper proposes a novel mobility model, called state-based mobility model (SMM) to provide more generalized framework for both describing the mobility and updating location information of complexly moving objects. We also introduce the state-based location update protocol (SLUP) based on this mobility model. An extensive experiment on various synthetic datasets shows that the proposed method improves the energy efficiency by 2 ∼ 3 times with the additional 10% of imprecision cost.

Copyright © 2005 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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