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 Emergency Handling for MAC Protocol in Human Body Communication | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 786903 6 pages doi 2011 786903 Research Article Emergency Handling for MAC Protocol in Human Body Communication Buyanjargal Otgonchimeg1 and Youngmi Kwon2 department of Policy and Planning Information Communications Technology and Post Authority ICTPA Ulaanbaatar 15160 Mongolia 2 Department of Information Communication Engineering Chungnam National University Daejeon 305-764 Republic of Korea Correspondence should be addressed to Youngmi Kwon ymkwon@ Received 30 September 2010 Accepted 27 January 2011 Academic Editor Arie Reichman Copyright 2011 B. Otgonchimeg and Y. Kwon. 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 human body communication HBC is a technology that enables short range data communication using the human body as a medium like an electrical wire. Thus it removes the need for a traditional antenna. HBC may be used as a type of data communication in body area network BAN while the devices are being in contact with body. One of important issues in BAN is an emergency alarm because it may be closely related to human life. For emergency data communication the most critical factor is the time constraint. IEEE specifies that the emergency alarm for the BAN must be notified in less than 1 sec and must provide prioritization mechanisms for emergency traffic and notification. As one type of BAN the HBC must follow this recommendation too. Existing emergency handling methods in BAN are based on the carrier sensing capability on radio frequencies to detect the status of channels. However PHY protocol in HBC does not provide the carrier sensing. So the previous methods are not well suitable for HBC directly. Additionally in the environment that the emergency .
