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Node Priority Strategy for Energy Efficient Data Collection Scheme in Wireless Body Area Networks

With the enhancement of human health perception and development of nanotechnologies, Wireless body area networks (WBANs) are captivating growing interest because of their suitability for wide range of applications. However, such a resource-constrained network makes energy efficient and lifetime become a challenging barrier in deploying these networks for most applications. This paper proposed an energy efficient data collection scheme based on a hierarchical nano-router and nano-node architecture to reduce energy consumption and prolong lifetime of WBANs. Moreover, Node Priority (NP) strategy is applyed to select target node finishing data collection process. Furthermore, a Local Node Respond (LND) mechanism to control sleep/active state of nano-nodes are used. Finally, we conduct extensive simulations for both the proposed data collection scheme and the benchmark greedy scheme to illustrate the energy efficiency of our scheme as well as to discuss the impacts of network parameters on network energy saving performance.