Abstract
Wireless body area networks (WBANs) represent a key emerging technology to resolve the connection issues on, in or around the human body. One of the most important and challenging issues in WBANs is to maximize the network lifetime. Employing additional relaying node to save energy was considered in the literatures available. Different from the related work, we propose a novel adaptive MAC protocol for WBANs named Network Longevity Enhancement by Energy Aware medium access control Protocol (NLEEAP), which reduces energy consumption without introducing additional devices. The procedures in NLEEAP consist of relay request, relay response and superframe adjustment. The relay operation is initiated when the shortage of a node’s residual energy occurs. Once the relay succeeds, NLEEAP smoothly switches the network topology from single-hop to multi-hop. Simulations are conducted and the results show the superiority of NLEEAP in energy efficiency compared with that of existing standard of IEEE 802.15.4.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China under Grant Nos. 61231008, 61271176 and 61401334, National Science and Technology Major Project under Grant No. 2013ZX03005007-003, National Basic Research Program of China (973 Program) under Grant No. 2009CB320404, Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) under Grant No. IRT0852, the Fundamental Research Funds for the Central Universities, and the 111 Project (B08038).
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Cai, X., Li, J., Yuan, J. et al. Energy-aware adaptive topology adjustment in wireless body area networks. Telecommun Syst 58, 139–152 (2015). https://doi.org/10.1007/s11235-014-9899-y
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DOI: https://doi.org/10.1007/s11235-014-9899-y