Considerations for Synchronization in Body Area Networks for Human Activity Monitoring |
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Authors: | Johan Plomp Mikko Heiskanen Mika Hillukkala Tapio Heikkilä Jari Rehu Niek Lambert Victor van Acht Tom Ahola |
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Affiliation: | (1) VTT - Technical Research Centre of Finland, Espoo, Finland;(2) Philips Research, Eindhoven, Netherlands;(3) Nokia Research Centre, Helsinki, Finland |
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Abstract: | In this paper, we highlight considerations for synchronization issues in body area networks. Requirements for the synchronization
accuracy in body area networks depend on the application at hand. Synchronization may be needed for power management, sample
ordering, calculation of stimulus responses and for sensor fusion. This paper provides a theoretical exercise to help understand
the accuracy required for typical human motion sensing. It gives an overview of various synchronisation strategies used and
implemented in prototype systems. Lessons learnt from practical implementations using Bluetooth, an IEEE 802.15.4 proprietary
network and Nanonet are presented to illustrate the principles involved. The discussion provides some considerations and the
requirements for typical WBAN applications. |
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