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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 Design and Analysis of an Energy-Saving Distributed MAC Mechanism for Wireless Body Sensor Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 571407 13 pages doi 10.1155 2010 571407 Research Article Design and Analysis of an Energy-Saving Distributed MAC Mechanism for Wireless Body Sensor Networks Begonya Otal 1 Luis Alonso 2 and Christos Verikoukis3 department of Neurosciences Institute of Biomedical Research August Pi Sunyer IDIBAPS 08036 Barcelona Spain department of Signal Theory and Communications Universitat Polit cnica de Catalunya UPC 08034 Barcelona Spain 3Centre Tecnològic de Telecomunicacions de Catalunya CTTC 08860 Castelldefels Barcelona Spain Correspondence should be addressed to Begonya Otal bego_otal@yahoo.es Received 15 February 2010 Revised 26 June 2010 Accepted 17 August 2010 Academic Editor Edith C.-H. Ngai Copyright 2010 Begonya Otal 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. The fact that the IEEE 802.15.4 MAC does not fully satisfy the strict wireless body sensor network BSN requirements in healthcare systems highlights the need for the design and analysis of new scalable MAC solutions which guarantee low power consumption to all specific sorts of body sensors and traffic loads. While taking the challenging healthcare requirements into account this paper aims for the study of energy consumption in BSN scenarios. For that purpose the IEEE 802.15.4 MAC limitations are first examined and other potential MAC layer alternatives are further explored. Our intent is to introduce energy-aware radio activation polices into a high-performance distributed queuing medium access control DQ-MAC protocol and evaluate its energy-saving achievements as a function of the network load and the packet length. To do so a fundamental energy-efficiency theoretical analysis for DQ-MAC protocols is hereby for the first time .
