The active badge location system
ACM Transactions on Information Systems (TOIS)
A resource-adaptive mobile navigation system
Proceedings of the 7th international conference on Intelligent user interfaces
An Architecture for Location Aware Applications
HICSS '02 Proceedings of the 35th Annual Hawaii International Conference on System Sciences (HICSS'02)-Volume 9 - Volume 9
An IR Local Positioning System for Smart Items and Devices
ICDCSW '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Towards Vision-Based 3-D People Tracking in a Smart Room
ICMI '02 Proceedings of the 4th IEEE International Conference on Multimodal Interfaces
Evolution of mobile location-based services
Communications of the ACM - Mobile computing opportunities and challenges
On location models for ubiquitous computing
Personal and Ubiquitous Computing
An Architecture for Providing Java Applications with Indoor and Outdoor Hybrid Location Sensing
SEUS-WCCIA '06 Proceedings of the The Fourth IEEE Workshop on Software Technologies for Future Embedded and Ubiquitous Systems, and the Second International Workshop on Collaborative Computing, Integration, and Assurance (SEUS-WCCIA'06)
A Survey of Location Privacy and an Approach for Solitary Users
HICSS '07 Proceedings of the 40th Annual Hawaii International Conference on System Sciences
Reducing the Calibration Effort for Probabilistic Indoor Location Estimation
IEEE Transactions on Mobile Computing
A hybrid positioning system for technology-independent location-aware computing
Software—Practice & Experience
Redundant positioning architecture
Computer Communications
Calibrating RSS-Based Indoor Positioning Systems
WIMOB '09 Proceedings of the 2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications
Supporting ubiquitous location information in interworking 3G and wireless networks
Communications of the ACM
A positioning service for pervasive objects in dynamic environments
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
A survey of mobile phone sensing
IEEE Communications Magazine
Place lab: device positioning using radio beacons in the wild
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
A survey of indoor positioning systems for wireless personal networks
IEEE Communications Surveys & Tutorials
Survey of Wireless Indoor Positioning Techniques and Systems
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
| Hi-index | 0.00 |
In the last years, an increasing interest in location services characterized the market of mobile ubiquitous devices (smartphones, handhelds, etc.). Several technologies and solutions have been developed to determine the position of mobile devices in their operating space, each with its specific degree of precision and accuracy. In this scenario, the ideal location service should be able of tracking the mobile terminal in any place it moves to, both indoors and outdoors. However, while outdoor location services have already achieved a satisfactory degree of technological maturity and effectiveness, a really ubiquitous location service that works satisfactorily in both indoor and outdoor scenarios is not yet available. In order to cope with the above challenge, this work proposes a hybrid location approach designed to choose and switch among multiple positioning technologies supported by the mobile device and available in the surrounding environment, in a dynamic and transparent way during the user movement. It combines signal strength---based fingerprinting techniques for indoor positioning together with traditional GPS-based positioning for the outdoor localization and performs opportunistic technology switching according to a count-and-threshold mechanism. The resulting solution is able to leverage the different features of the wireless networks and of the global positioning technologies, in order to provide ubiquitous location services across indoor and outdoor scenarios, as well as to minimize power consumption of the mobile device.