Extending the LBS-framework TraX: Efficient proximity detection with dead reckoning
Computer Communications
Efficient indoor proximity and separation detection for location fingerprinting
Proceedings of the 1st international conference on MOBILe Wireless MiddleWARE, Operating Systems, and Applications
Service broker architecture: location business case and mashups
IEEE Communications Magazine
A declarative approach to a user-centric markup language for location-based services
Mobility '09 Proceedings of the 6th International Conference on Mobile Technology, Application & Systems
Zone-based rss reporting for location fingerprinting
PERVASIVE'07 Proceedings of the 5th international conference on Pervasive computing
G-sense: a scalable architecture for global sensing and monitoring
IEEE Network: The Magazine of Global Internetworking
Exposing position uncertainty in middleware
Proceedings of the 2nd International Workshop on Middleware for Pervasive Mobile and Embedded Computing
PerPos: a translucent positioning middleware supporting adaptation of internal positioning processes
Proceedings of the ACM/IFIP/USENIX 11th International Conference on Middleware
An open design privacy-enhancing platform supporting location-based applications
Proceedings of the 6th International Conference on Ubiquitous Information Management and Communication
Indoor pedestrian navigation based on hybrid route planning and location modeling
Pervasive'12 Proceedings of the 10th international conference on Pervasive Computing
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Location-based services turned out not to be the "next big thing" following the success stories of GSM and SMS. The reasons for this are manifold and range from inaccurate cellular positioning technologies to a lack of competition in this field, both being closely related to the fact that positioning is controlled by a network-centric approach where the mobile network operator has the unique selling point for making position data available to third parties. However, things change: small, low-cost GPS receivers, either attachable to mobile devices or even integrated, are enjoying great popularity since their recent inception and are expected to become a standard feature of cell phones in the near future. In conjunction with mobile packet data services, they provide a basis for device-centric LBS platforms, where position data can be obtained directly from the mobile device. In this article the device-centric LBS middleware TraX, which focuses particularly on position management, advanced functions for interrelating the position data of several targets, and privacy protection, is presented. Due to its generic and open design, TraX can be reused for a broad range of different LBSs and thus fosters service diversity and multiprovider environments, both of which are essential for making the next generation of LBSs a success