The active badge location system
ACM Transactions on Information Systems (TOIS)
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Location Models from the Perspective of Context-Aware Applications and Mobile Ad Hoc Networks
Personal and Ubiquitous Computing
A Location Model for Communicating and Processing of Context
Personal and Ubiquitous Computing
Project Aura: Toward Distraction-Free Pervasive Computing
IEEE Pervasive Computing
People, places, things: Web presence for the real world
WMCSA '00 Proceedings of the Third IEEE Workshop on Mobile Computing Systems and Applications (WMCSA'00)
Experimenting an Indoor Bluetooth-Based Positioning Service
ICDCSW '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Challenge: ubiquitous location-aware computing and the "place lab" initiative
Proceedings of the 1st ACM international workshop on Wireless mobile applications and services on WLAN hotspots
Augmenting everyday life with sentient artefacts
Proceedings of the 2005 joint conference on Smart objects and ambient intelligence: innovative context-aware services: usages and technologies
Exploiting passive advantages of sentient artefacts
UCS'06 Proceedings of the Third international conference on Ubiquitous Computing Systems
Prottoy: a middleware for sentient environment
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
Lightweight material detection for placement-aware mobile computing
Proceedings of the 21st annual ACM symposium on User interface software and technology
DroPicks: a tool for collaborative content sharing exploiting everyday artefacts
UCS'07 Proceedings of the 4th international conference on Ubiquitous computing systems
Spatial co-location for device association: the connected object way
Proceedings of the 2011 international workshop on Networking and object memories for the internet of things
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Our approach towards context awareness is to use sensor augmented daily life objects surrounding us for extracting context information and for providing ambient services. Some of these artefacts are static in nature and have designated location, like a bed in the bedroom, a refrigerator in the kitchen, etc. Utilizing this characteristics, we present "Spreha", a light weight hierarchical location model where static artefacts are used as reference points for identifying mobile artefacts like a chair, a watch, a lamp, etc. The model is organized in a tree structure representing the containment relationship and is independent of underlying sensing infrastructure. A prototype implementation of the model has been constructed as a pluggable module of a generic middleware using Bluetooth technology. This paper discusses about the design, architecture and findings of the prototype implementation.