NDLI: Prediction-based dynamic relay transmission scheme for Wireless Body Area Networks

Content Provider	IEEE Xplore Digital Library
Author	Hui Feng Bin Liu Zhisheng Yan Chi Zhang Chang Wen Chen
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci. & Eng., SUNY - Univ. at Buffalo, Buffalo, NY, USA (Chang Wen Chen) \|\| Sch. of Inf. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei, China (Hui Feng; Bin Liu; Zhisheng Yan; Chi Zhang)
Abstract	To support long-term pervasive healthcare services, communications in Wireless Body Area Networks (WBANs) need to be both reliable and energy-efficient. As a cooperative transmission method, relay transmission scheme works effectively in resisting shadowing effect and improving reliability in WBANs. However, the extra energy consumption introduced by relay transmission is very high, which can shorten the lifetime of the whole network. In this paper, temporal and spatial correlation models for on-body channels are first presented to better characterize the slow fading effect of on-body channels. Then a prediction-based dynamic relay transmission (PDRT) scheme that makes full use of the correlation characteristics of on-body channels is proposed. In the PDRT scheme, “when to relay” and “who to relay” are decided in an optimal way based on the last known channel states. Moreover, neither extra signaling procedure nor dedicated channel sensing period is needed. Simulation results show that the PDRT scheme achieves significant performance improvement in energy efficiency, as well as ensuring the transmission reliability.
Starting Page	2539
Ending Page	2544
File Size	206904
Page Count	6
File Format	PDF
ISBN	9781467362351
ISSN	21669570
DOI	10.1109/PIMRC.2013.6666574
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Silicon Correlation Reliability Energy consumption Resource management Medical services outage probability Wireless Body Area Networks relay transmission body area channels temporal and spatial correlation models energy efficiency
Content Type	Text
Resource Type	Article

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