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    Link quality aware channel allocation for multichannel body sensor networks.

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    Link Quality Aware Channel ...
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    Authors
    Gao, Weifeng
    Zhao, Zhiwei
    Min, Geyong
    Cao, Yue
    Duan, Hancong
    Liu, Lu cc
    Long, Yimiao
    Yin, Guangqiang
    Affiliation
    University of Electronic Science and Technology of China
    University of Exeter
    University of Derby
    Northumbria University
    Issue Date
    2017-02-21
    
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    Abstract
    Body Sensor Network (BSN) is a typical Internet-of-Things (IoT) application for personalized health care. It consists of economically powered, wireless and implanted medical monitoring sensor nodes, which are designed to continually collect the medical information of the target patients. Multichannel is often used in BSNs to reduce the spectrum competition of the tremendous sensor nodes and the problem of channel assignment has attracted much research attention. The health sensing data in BSNs is often required to be delivered to a sink node (or server) before a certain deadline for real time monitoring or health emergency alarm. Therefore, deadline is of significant importance for multichannel allocation and scheduling. The existing works, though designed to meet the deadline, often overlook the impact of the unreliable wireless links. As a result, the health sensing data can still be overdue because of the scheduled lossy links. Besides, potential collisions in the schedules also incur considerable delay in delivering the sensing data. In this paper, we propose a novel deadline- driven Link quality Aware Channel Assignment scheme (LACA), where link quality, deadlines and collisions are jointly considered. LACA prioritizes links with urgent deadlines and heavy collisions. Besides, LACA allows the exploition of the spare slots for retransmissions on lossy links, which can further reduce the retransmission delay. Extensive simulation experiments show that compared to the existing approaches, LACA can better utilize the wireless spectrum and achieve higher packet delivery ratio before the deadline.
    Citation
    Gao, W. et al (2017) 'Link quality aware channel allocation for multichannel body sensor networks', Pervasive and Mobile Computing, 41 pp. 354-364.
    Publisher
    Elsevier
    Journal
    Pervasive and Mobile Computing
    URI
    http://hdl.handle.net/10545/622070
    DOI
    10.1016/j.pmcj.2017.02.004
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S1574119217300883
    Type
    Article
    Language
    en
    ISSN
    15741192
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.pmcj.2017.02.004
    Scopus Count
    Collections
    Department of Electronics, Computing & Maths

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