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Body Sensor Networks (BSNs) form a promising technology to supply healthcare to an ageing population. A large number of sensor devices, radios and MAC protocols are being developed. However, because of the small scale of a BSN, node mobility will arise frequently. This paper presents the first algorithm to support such Mobile BSNs, while remaining energy efficient. A Body Sensor Network (BSN) can be defined as a network on the human body, comprised of wireless sensor nodes that monitor body parameters and transmit those data to a central device or sink. BSNs are an important development for ambulant patient monitoring, a key technology to improve support of a growing elderly population.
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