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ThinkMind // UBICOMM 2010, The Fourth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies // View article ubicomm_2010_20_20_10200


Semantic P2P Overlay for Dynamic Context Lookup

Authors:
Shubhabrata Sen
Wenwei Xue
Hung Keng Pung
Wai Choong Wong

Keywords: context-awareness; context-aware middleware; operating spaces; semantic peer-to-peer overlays

Abstract:
Context-aware applications generally need to retrieve various kinds of dynamic context data from a large number of context sources. A middleware managing context sources must provide an efficient context lookup mechanism to ease application development. In this paper, we categorize the context sources as operating spaces and propose semantic peer-to-peer overlays over these spaces to accelerate dynamic context lookup in a context-aware middleware. Our proposed overlay structure is specially designed to deal with dynamic sensory context such as a person’s location and temperature that are frequently changing and difficult to be promptly retrieved using traditional peer-to-peer protocols. Our overlay and indexing method has a low maintenance overhead. Measurement results show that the proposed overlay achieves a good response time and accuracy for context lookup as well as requires low maintenance overhead.

Pages: 464 to 470

Copyright: Copyright (c) IARIA, 2010

Publication date: October 25, 2010

Published in: conference

ISSN: 2308-4278

ISBN: 978-1-61208-100-7

Location: Florence, Italy

Dates: from October 25, 2010 to October 30, 2010

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