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Characterization of inter-body interference in context aware body area networking (CABAN)

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5 Author(s)
Sean F. Heaney ; Institute of Electronics, Communications & Information Technology (ECIT), Queen's University of Belfast, Belfast - BT3 9DT, UK ; William G. Scanlon ; E. Garcia-Palacios ; Simon L. Cotton
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The characterization and understanding of body to body communication channels is a pivotal step in the development of emerging wireless applications such as ad-hoc personnel localisation and context aware body area networks (CABAN). The latter is a recent innovation where the inherent mobility of body area networks can be used to improve the coexistence of multiple co-located BAN users. Rather than simply accepting reductions in communication performance, sensed changes in inter-network co-channel interference levels may facilitate intelligent inter-networking; for example merging or splitting with other BANs that remain in the same domain. This paper investigates the inter-body interference using controlled measurements of the full mesh interconnectivity between two ambulatory BANs operating in the same environment at 2.45 GHz. Each of the twelve network nodes reported received signal strength to allow for the creation of carrier to interference ratio time series with an overall entire mesh sampling period of 54 ms. The results indicate that even with two mobile networks, it is possible to identify the onset of co-channel interference as the BAN users move towards each other and, similarly, the transition to more favourable physical layer channel conditions as they move apart.

Published in:

2011 IEEE GLOBECOM Workshops (GC Wkshps)

Date of Conference:

5-9 Dec. 2011