Abstract
Indoor location-based services hold promise for a multitude of valuable services, but require micro-detailed geo-referencing not achievable with "outdoor" technologies such as GPS and cellular networks. A widely used technique for accurate indoor positioning is location fingerprinting which makes use of existing WLAN infrastructures. The technique consists of building a radio map of signal strength measurements which is searched to determine a position estimate. While the fingerprinting technique has produced good positioning accuracy results, the technique incurs a substantial computational burden for large buildings and is thus problematic for tracking users in real time on processor-constrained mobile devices. In this paper we present a technique for improving the computational efficiency of the fingerprinting technique such that location determination becomes tractable on a mobile device. The technique is based on a graph-modeling of the physical environment and works by restricting the search space to positions that are possible to reach from a previously estimated position. The technique is general in that it can be applied in conjunction with any positioning algorithm, and a positive side effect is that it may enhance the positioning accuracy of the system.
Originalsprog | Engelsk |
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Titel | Proceedings of the 2007 Fourth Annual International Conference on Mobile and Ubiquitous Systems: Networking&Services (MobiQuitous |
Vol/bind | 00 |
Forlag | IEEE Computer Society Press |
Publikationsdato | 2007 |
Sider | 1-5 |
ISBN (Trykt) | 978-1-4244-1024-8 |
DOI | |
Status | Udgivet - 2007 |
Begivenhed | The 4th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MOBIQUITOUS2007) - Philadelphia, USA Varighed: 6 aug. 2007 → 10 aug. 2007 Konferencens nummer: 4 |
Konference
Konference | The 4th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MOBIQUITOUS2007) |
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Nummer | 4 |
Land/Område | USA |
By | Philadelphia |
Periode | 06/08/2007 → 10/08/2007 |