tailieunhanh - Báo cáo hóa học: " Research Article Secure Precise Clock Synchronization for Interconnected Body Area Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Secure Precise Clock Synchronization for Interconnected Body Area Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 797931 14 pages doi 2011 797931 Research Article Secure Precise Clock Synchronization for Interconnected Body Area Networks David Sanchez Sanchez 1 Luis Alonso 2 Pantelis Angelidis 3 and Christos Verikoukis4 1 Department of Information and Communication Technologies Pompeu Fabra University 08018 Barcelona Spain 2 Department of Signal Theory and Communications Polytechnic University of Catalonia 08034 Barcelona Spain 3 Department of Engineering Informatics and Telecommunications University of Western Macedonia 50100 Kozani Greece 4 Intelligent Energy Area Telecommunications Technological Centre of Catalonia 08860 Barcelona Spain Correspondence should be addressed to David Sanchez Sanchez Received 30 October 2010 Accepted 26 January 2011 Academic Editor Dries Neirynck Copyright 2011 David Sanchez Sanchez et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Secure time synchronization is a paramount service for wireless sensor networks WSNs constituted by multiple interconnected body area networks BANs . We propose a novel approach to securely and efficiently synchronize nodes at BAN level and or WSN level. Each BAN develops its own notion of time. To this effect the nodes of a BAN synchronize with their BAN controller node. Moreover controller nodes of different BANs cooperate to agree on a WSN global and or to transfer UTC time. To reduce the number of exchanged synchronization messages we use an environmental-aware time prediction algorithm. The performance analysis in this paper shows that our approach exhibits very advanced security accuracy precision and low-energy trade-off. For comparable precision our proposal outstands related clock synchronization .

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