Updating and Querying Databases that Track Mobile Units
Distributed and Parallel Databases - Special issue on mobile data management and applications
A Map-Based Dead-Reckoning Protocol for Updating Location Information
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
A Probabilistic Room Location Service for Wireless Networked Environments
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
Practical robust localization over large-scale 802.11 wireless networks
Proceedings of the 10th annual international conference on Mobile computing and networking
The Horus WLAN location determination system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Location-based Services: Fundamentals and Operation
Location-based Services: Fundamentals and Operation
ACM SIGMOBILE Mobile Computing and Communications Review
Automatic mitigation of sensor variations for signal strength based location systems
LoCA'06 Proceedings of the Second international conference on Location- and Context-Awareness
Place lab: device positioning using radio beacons in the wild
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
MoteTrack: a robust, decentralized approach to RF-Based location tracking
LoCA'05 Proceedings of the First international conference on Location- and Context-Awareness
Accurate GSM indoor localization
UbiComp'05 Proceedings of the 7th international conference on Ubiquitous Computing
TraX: a device-centric middleware framework for location-based services
IEEE Communications Magazine
Efficient indoor proximity and separation detection for location fingerprinting
Proceedings of the 1st international conference on MOBILe Wireless MiddleWARE, Operating Systems, and Applications
Redpin - adaptive, zero-configuration indoor localization through user collaboration
Proceedings of the first ACM international workshop on Mobile entity localization and tracking in GPS-less environments
Indoor Positioning System Using Beacon Devices for Practical Pedestrian Navigation on Mobile Phone
UIC '09 Proceedings of the 6th International Conference on Ubiquitous Intelligence and Computing
A taxonomy for radio location fingerprinting
LoCA'07 Proceedings of the 3rd international conference on Location-and context-awareness
Indoor location fingerprinting with heterogeneous clients
Pervasive and Mobile Computing
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In typical location fingerprinting systems a tracked terminal reports sampled Received Signal Strength (RSS) values to a location server, which estimates its position based on a database of prerecorded RSS fingerprints. So far, poll-based and periodic RSS reporting has been proposed. However, for supporting proactive Location-based Services (LBSs), triggered by pre-defined spatial events, the periodic protocol is inefficient. Hence, this paper introduces zone-based RSS reporting: the location server translates geographical zones defined by the LBS into RSS-based representations, which are dynamically configured with the terminal. The terminal, in turn, reports its measurements only when they match with the configured RSS patterns. As a result, the number of messages exchanged between terminal and server is strongly reduced, saving battery power, bandwidth and also monetary costs spent for mobile bearer services. The paper explores several methods for realizing zone-based RSS reporting and evaluates them simulatively and analytically. An adaption of classical Bayes estimation turns out to be the best suited method.