Presence, Location, and Instant Messaging in a Context-Aware Application Framework
A mobile user’s presence and location information often forms important input for those applications and services that must anticipate on the user’s context. Additionally, the ability to let a mobile device determine its location in an indoor environment at a fine-grained level supports the creation of a new range of personalized mobile Internet applications. The framework described here joins the concepts of presence, location and instant messaging (PLIM) in an extended existing instant messaging system, and uses a Bluetooth network infrastructure to let a mobile device determine its indoor position. Experiments show that location determination can be realized with a room level granularity1.
KeywordsAccess Point Location Information Link Quality Instant Messaging Location Provider
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- Wireless World Research Forum, “Book of Visions 2001”, Version 1.0, http://www.wireless-world-research.org/, 2001.
- H. van Kranenburg, S. Arbanowski, E. Postmann, J. Hjelm, J. de Heer, C. Feichtner, “Ambient awareness in wireless information and communication services”, draft whitepaper WG2, WWRF, 2002Google Scholar
- S. van der Meer, S. Arbanowski, R. Popescu-Zeletin, “A Platform for Environment-Aware Applications”, Proc. of the First International Symposium on Handheld and Ubiquitous Computing HUC’99, Karlsruhe, Germany, Sept. 1999Google Scholar
- J. Hjelm, “Creating Location Services for the Wireless Web”, pp. 15–44, ISBN 0-471-40261-3, John Wiley & Sons, 2002Google Scholar
- J. Hightower, G. Borriello, “Location Systems for Ubiquitous Computing”, pp. 57–66. IEEE Computer, Volume 34, Number 8, August 2001Google Scholar
- J. C. Tang, N. Yankelovich, J. Begole, M. van Kleek, F. Li, J. Bhalodia, “ConNexus to Awarenex: Extending awareness to mobile users”, SIGCHI 2001, March 31–April 4 2001.Google Scholar
- Y. Nakanishi, K. Takahashi, T. Tsuji, K. Hakozaki, “iCAMS: a Mobile Communication Tool using Location Information and Scheduling Information”, International Conference on Pervasive Computinge (Pervasive2002), Zürich, Switzerland, August 26–28, 2002Google Scholar
- P. Bahl, V. N. Padmanabhan, “RADAR: An In-Building RF-based User Location and Tracking System”, Proceedings of IEEE INFOCOM 2000, Tel-Aviv, Israel, March 2002Google Scholar