Home // International Journal On Advances in Telecommunications, volume 3, numbers 1 and 2, 2010 // View article

Highly Accurate Location-Aware Information Delivery With PosPush

Authors:
Zhao Junhui
Wang Yongcai

Keywords: Location Based Service, Ultrasonic Positioning, Ubiquitous Computing

Abstract:
This paper proposes PosPush, a highly accurate location-based information delivery system, which utilizes the high-resolution 3D locations obtained from ultrasonic positioning devices to efficiently deliver the location based information to users. This system is designed especially for applications where a 3D space is partitioned into a set of closely neighboring small zones, and as a user moves into one of the zones, the corresponding information will be timely transferred to the user. In order to identify precise zones, PosPush defines a zone model by a set of key location points extracted by a location clustering algorithm, and the zone model is used for online zone identification based on hierarchical searching. In order to determine the appropriate delivery time, an Adaptive Window Change Detection (AWCD) method is proposed to detect the fast change along the location stream. To evaluate the system performance, a MV (Music Video) shelf demo prototype was built in which the information of commodities on the shelf can be delivered based on PosPush. We verified the feasibility and effectiveness of our proposed system from objective and subjective perspectives.

Pages: 83 to 92

Copyright: Copyright (c) to authors, 2010. Used with permission.

Publication date: September 5, 2010

Published in: journal

ISSN: 1942-2601