ACCESSING LOCATION AND PROXIMITY INFORMATION IN A DECENTRALIZED ENVIRONMENT - Location Resolution Operations

Thomas Hadig, Jörg Roth

Abstract

Location-aware applications take into account a mobile user's current location and provide location-dependent output. Often, such applications still have to deal with raw location data and specific positioning systems such as GPS, which lead to inflexible designs. To support developers of location-aware applications, we designed the Nimbus framework, which hides specific details of positioning systems and provides uniform output containing physical as well as semantic information. In this paper, we focus on two important operations provided by the framework, described by two questions "Where am I?" and "What is in my proximity?" Our solution takes into account the requirements of clients in mobile environments. Our algorithms are based on a decentralized and self-organizing runtime infrastructure and are, thus, highly scalable and accessible for mobile users. We demonstrate the effectiveness of our approach by a number of simulations.

References

  1. Abowd, G. D.; Atkeson, C. G.; Hong, J.; Long, S.; Kooper, R.; Pinkerton, M., 1997. Cyberguide: A mobile context-aware tour guide. ACM Wireless Networks, 3: 421-433
  2. Bauer, M.; Becker, C.; Rothermel, K., 2002. Location Models from the Perspective of Context-Aware Applications and Mobile Ad Hoc Networks, Personal and Ubiquitous Computing, Vol. 6, No. 5, Dec. 2002, 322-328
  3. Cheverst, K.; Davies, N.; Mitchell, K.; Friday, A.; Efstratiou, C., 2000. Developing a Context-aware Electronic Tourist Guide, CHI'00, ACM Press
  4. Dey, A., K.; Abowd, G., D., 2000. CybreMinder: A Context-aware System for Supporting Reminders, Second International Symposion on Handheld and Ubiquitous Computing 2000, Bristol (UK), Sept. 25-27, 2000, LNCS 1927, Springer-Verlag, 187-199
  5. Hohl, F; Kubach, U.; Leonhardi, A.; Schwehm, M.; Rothermel, K., 1999. Nexus - an open global infrastructure for spatial-aware applications. 5th Intern. Conference on Mobile Computing and Networking (MobiCom 7899), Seattle, WA, USA, 1999. ACM Press
  6. Kindberg, T.; Barton, J.; Morgan, J.; Becker G.; Caswell, D.; Debaty, P.; Gopal, G.; Frid, M.; Krishnan, V.; Morris, H.; Schettino, J.; Serra, B.; Spasojevic, M., 2000. People, Places, Things: Web Presence for the Real World, 3rd Annual Wireless and Mobile Computer Systems and Applications, Monterey, USA, Dec. 2000
  7. Leonhardt, U., 1998. Supporting Location-Awareness in Open Distributed Systems, PhD Thesis, University of London
  8. Marmasse, N.; Schmandt, C., 2000. Location-aware Information Delivery with ComMotion, Second International Symposion on Handheld and Ubiquitous Computing 2000, Bristol (UK), Sept. 25-27, 2000, LNCS 1927, Springer, 157-171
  9. Pradhan, S., 2000. Semantic Locations, Personal Technologies, Vol. 4, No. 4, 2000, 213-216
  10. Roth, J., 2002a. A Communication Middleware for Mobile and Ad-hoc Scenarios, Int. Conf. on Internet Computing (IC'02), June 24-27, 2002, Las Vegas, Vol. I, CSREA press, 77-84
  11. Roth, J., 2002b. Context-aware Web Applications Using the PinPoint Infrastructure, IADIS Intern. Conference WWW/Internet 2002, Lisbon, Portugal, Nov. 13-15, 2002, IADIS press, 3-10
  12. Roth, J., 2003a. Flexible Positioning for Location-Based Services, IADIS Intern. Conf. e-Society 2003, Lisbon, Portugal, June 3-6, 2003, IADIS Press, 296-304
  13. Roth, J., 2003b. Semantic Geocast Using a Self-organizing Infrastructure, Innovative Internet Community Systems (I2CS), Leipzig, Germany, June 19-21, 2003, SpringerVerlag, LNCS 2877, 216-228
  14. U.S. Census Bureau, 2000. 108th Congressional Districts Census, 2000, TIGER/Line Files, http://www.census.gov/geo/www/tiger/index. html
  15. Tomlin, C., D., 1990. Geographic Information Systems and Cartographic Modelling, Prentice Hall
  16. UMTS Forum, 2000. Enabling UMTS/Third Generation Services and Applications, Report 11, http://www.umts-forum.org, Oct. 2000
  17. Vivid Solutions, 2003. JTS Technical Specifications, http://www.vividsolutions.com, March 31, 2003
  18. Vodafone Homepage, 2003. www.vodafone.com
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Paper Citation


in Harvard Style

Hadig T. and Roth J. (2004). ACCESSING LOCATION AND PROXIMITY INFORMATION IN A DECENTRALIZED ENVIRONMENT - Location Resolution Operations . In Proceedings of the First International Conference on E-Business and Telecommunication Networks - Volume 1: ICETE, ISBN 972-8865-15-5, pages 88-95. DOI: 10.5220/0001382000880095


in Bibtex Style

@conference{icete04,
author={Thomas Hadig and Jörg Roth},
title={ACCESSING LOCATION AND PROXIMITY INFORMATION IN A DECENTRALIZED ENVIRONMENT - Location Resolution Operations},
booktitle={Proceedings of the First International Conference on E-Business and Telecommunication Networks - Volume 1: ICETE,},
year={2004},
pages={88-95},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001382000880095},
isbn={972-8865-15-5},
}


in EndNote Style

TY - CONF
JO - Proceedings of the First International Conference on E-Business and Telecommunication Networks - Volume 1: ICETE,
TI - ACCESSING LOCATION AND PROXIMITY INFORMATION IN A DECENTRALIZED ENVIRONMENT - Location Resolution Operations
SN - 972-8865-15-5
AU - Hadig T.
AU - Roth J.
PY - 2004
SP - 88
EP - 95
DO - 10.5220/0001382000880095