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Wireless body area sensor networks (WBASNs) are becoming an increasingly significant breakthrough technology for smart healthcare systems, enabling improved clinical decision-making in daily medical care. Recently, radio frequency ultra-wideband technology has developed substantially for physiological signal monitoring due to its advantages such as low-power consumption, high transmission data rate,...
A critical issue in wireless sensor networks is an energy-efficiency since the sensor batteries have limited energy power and, in most cases, are not rechargeable. The most practical manner relate to this issue is to use a node wake-up scheduling protocol that some sensor nodes stay active to provide sensing service, while the others are inactive for conserving their energy. Especially, CTC (Connected...
Due to the limited capacity of the sensors' batteries, energy is a critical resource in wireless sensors networks. Sleep mode operation is an effective approach to prolong the life time of the network. How to determine insomnious (wakeup) node is a critical component of this approach. There are a number of selection methodologies in the literature but all of them except randomized sleeping require...
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