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http://dx.doi.org/10.5916/jkosme.2017.41.2.156

A distributed relay selection algorithm for two-hop wireless body area networks  

Kim, Seung-Ku (School of Electronics Engineering, Chungbuk National University)
Joo, Yang-Ick (Division of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.41, no.2, 2017 , pp. 156-162 More about this Journal
Abstract
This paper investigates two-hop extension communication in wireless body area networks. Many previous studies have demonstrated that two-hop extended topology outperforms single-hop topology. Although many researchers have proposed using two-hop extension communication to improve link reliability, no one has considered using a relay selection algorithm or provided a suitable solution for wireless body area networks. The design goal of the proposed algorithm is selecting a proper relay node to retransmit failed packets distributively. The proposed algorithm configures the carrier sensing period to choose one relay node promptly without requiring additional interaction. We analyze the link conditions corresponding to various body postures and investigate which factors are proper to determine the carrier sensing period. The empirical results show that the proposed algorithm reduces the expected number of transmissions required to deliver a packet successfully.
Keywords
Relay selection; Two-hop extension; Wireless body area networks;
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