Journal ArticleDOI
Highly reliable energy-saving mac for wireless body sensor networks in healthcare systems
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TLDR
A novel cross-layer fuzzy-rule scheduling algorithm and energy-aware radio activation policies are introduced and a fuzzy-logic system in each body sensor is integrated to deal with multiple cross- layer input variables of diverse nature in an independent manner.Abstract:
Wireless body sensor networks (BSNs) in healthcare systems operate under conflicting requirements. These are the maintenance of the desired reliability and message latency of data transmissions, while simultaneously maximizing battery lifetime of individual body sensors. In doing so, the characteristics of the entire system, including physical, medium access control (MAC), and application layers have to be considered. The aim of this paper is to develop a new MAC model for BSNs to fulfill all these specific rigorous requirements under realistic medical settings. For that purpose, a novel cross-layer fuzzy-rule scheduling algorithm and energy-aware radio activation policies are introduced. The main idea is to integrate a fuzzy-logic system in each body sensor to deal with multiple cross-layer input variables of diverse nature in an independent manner. By being autonomously aware of their current condition, body sensors are able to demand a "collision-free" time slot, whenever they consider it strictly required (e.g. high system packet delay or low body sensor residual battery lifetime). Similarly, they may refuse to transmit, if there is a bad channel link, thus permitting another body sensor to do so. This results in improving the system overall performance. The proposed MAC model is evaluated by computer simulations in terms of quality of service and energy consumption under specific healthcare scenarios.read more
Citations
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Journal ArticleDOI
Is the Random Access Channel of LTE and LTE-A Suitable for M2M Communications? A Survey of Alternatives
TL;DR: A survey of the alternatives that have been proposed over the last years to improve the operation of the random access channel of LTE and LTE-A is provided, identifying strengths and weaknesses of each one of them, while drawing future trends to steer the efforts over the same shooting line.
Journal ArticleDOI
Review: A survey on cross-layer solutions for wireless sensor networks
TL;DR: This survey proposes to identify the key problems of WSNs and gather available cross-layer solutions for them that have been proposed so far, in order to provide insights on the identification of open issues and provide guidelines for future proposals.
Journal ArticleDOI
u-Healthcare system: state-of-the-art review and challenges.
Farid Touati,Rohan Tabish +1 more
TL;DR: A comprehensive review of up-to-date requirements in hardware, communication, and computing for next-generation u-Health systems is presented and new technological trends and design challenges they have to cope with, while designing such systems are presented.
Journal ArticleDOI
Wireless Body Area Networks for Healthcare: A Survey
TL;DR: This paper surveys the WBANs that are designed for applications in healthcare, including monitoring and sensing, power efficient protocols, system architectures, routing and security, and concludes by discussing some open research issues, their potential solutions and future trends.
Journal ArticleDOI
Review: Wireless sensor networks for rehabilitation applications: Challenges and opportunities
TL;DR: This paper presents WSN for rehabilitation supervision with a focus on key scientific and technical challenges that have been solved as well as interdisciplinary challenges that are still open, and believes that bridging researchers with different scientific backgrounds could have a significant impact on the development of WSN.
References
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Journal ArticleDOI
Fuzzy logic systems for engineering: a tutorial
TL;DR: After synthesizing a FLS, it is demonstrated that it can be expressed mathematically as a linear combination of fuzzy basis functions, and is a nonlinear universal function approximator, a property that it shares with feedforward neural networks.
Book
Body sensor networks
TL;DR: The aim of the BSN is to provide a truly personalised monitoring platform that is pervasive, intelligent, and effective in patients with chronic diseases such as heart disease.
Journal ArticleDOI
Performance analysis of low rate wireless technologies for medical applications
TL;DR: The emerging low-rate Wireless Personal Area Network technology as specified in the Institute of Electrical and Electronics Engineers 802.15.4 standard is considered and its suitability to the medical environment is evaluated.
Proceedings ArticleDOI
Energy Efficiency of the IEEE 802.15.4 Standard in Dense Wireless Microsensor Networks: Modeling and Improvement Perspectives
TL;DR: In this paper, the authors evaluate the potential of an IEEE 802.15.4 radio for use in an ultra low power sensor node operating in a dense network and show that the average power per node can be reduced down to 211 /spl mu/W.
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