Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3723
Título: BANMAC: an opportunistic MAC protocol for reliable communications in body area networks
Autor: Prabh, K. Shashi
Royo, Fernando
Tennina, Stefano
Olivares, Teresa
Data: 2012
Editora: IEEE
Relatório da Série N.º: Distributed Computing in Sensor Systems (DCOSS);
Resumo: We consider reliable communications in Body Area Networks (BAN), where a set of nodes placed on human body are connected using wireless links. In order to keep the Specific Absorption Rate (SAR) as low as possible for health safety reasons, these networks operate in low transmit power regime, which however, is known to be error prone. It has been observed that the fluctuations of the Received Signal Strength (RSS) at the nodes of a BAN on a moving person show certain regularities and that the magnitude of these fluctuations are significant (5 - 20 dB). In this paper, we present BANMAC, a MAC protocol that monitors and predicts the channel fluctuations and schedules transmissions opportunistically when the RSS is likely to be higher. The MAC protocol is capable of providing differentiated service and resolves co-channel interference in the event of multiple co-located BANs in a vicinity. We report the design and implementation details of BANMAC integrated with the IEEE 802.15.4 protocol stack. We present experimental data which show that the packet loss rate (PLR) of BANMAC is significantly lower as compared to that of the IEEE 802.15.4 MAC. For comparable PLR, the power consumption of BANMAC is also significantly lower than that of the IEEE 802.15.4. For co-located networks, the convergence time to find a conflict-free channel allocation was approximately 1 s for the centralized coordination mechanism and was approximately 4 s for the distributed coordination mechanism.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3723
ISBN: 978-1-4673-1693-4
Versão do Editor: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6227738
Aparece nas colecções:ISEP – CISTER – Comunicações em eventos científicos

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