Cargando…

A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks

Network Lifetime is one of the most important metrics in Wireless Body Area Networks (WBANs). In this paper, a relay selection scheme is proposed under the topology constrains specified in the IEEE 802.15.6 standard to maximize the lifetime of WBANs through formulating and solving an optimization pr...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Yu, Zhang, Bing, Zhang, Shi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5492559/
https://www.ncbi.nlm.nih.gov/pubmed/28574455
http://dx.doi.org/10.3390/s17061267
_version_ 1783247355725742080
author Zhang, Yu
Zhang, Bing
Zhang, Shi
author_facet Zhang, Yu
Zhang, Bing
Zhang, Shi
author_sort Zhang, Yu
collection PubMed
description Network Lifetime is one of the most important metrics in Wireless Body Area Networks (WBANs). In this paper, a relay selection scheme is proposed under the topology constrains specified in the IEEE 802.15.6 standard to maximize the lifetime of WBANs through formulating and solving an optimization problem where relay selection of each node acts as optimization variable. Considering the diversity of the sensor nodes in WBANs, the optimization problem takes not only energy consumption rate but also energy difference among sensor nodes into account to improve the network lifetime performance. Since it is Non-deterministic Polynomial-hard (NP-hard) and intractable, a heuristic solution is then designed to rapidly address the optimization. The simulation results indicate that the proposed relay selection scheme has better performance in network lifetime compared with existing algorithms and that the heuristic solution has low time complexity with only a negligible performance degradation gap from optimal value. Furthermore, we also conduct simulations based on a general WBAN model to comprehensively illustrate the advantages of the proposed algorithm. At the end of the evaluation, we validate the feasibility of our proposed scheme via an implementation discussion.
format Online
Article
Text
id pubmed-5492559
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-54925592017-07-03 A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks Zhang, Yu Zhang, Bing Zhang, Shi Sensors (Basel) Article Network Lifetime is one of the most important metrics in Wireless Body Area Networks (WBANs). In this paper, a relay selection scheme is proposed under the topology constrains specified in the IEEE 802.15.6 standard to maximize the lifetime of WBANs through formulating and solving an optimization problem where relay selection of each node acts as optimization variable. Considering the diversity of the sensor nodes in WBANs, the optimization problem takes not only energy consumption rate but also energy difference among sensor nodes into account to improve the network lifetime performance. Since it is Non-deterministic Polynomial-hard (NP-hard) and intractable, a heuristic solution is then designed to rapidly address the optimization. The simulation results indicate that the proposed relay selection scheme has better performance in network lifetime compared with existing algorithms and that the heuristic solution has low time complexity with only a negligible performance degradation gap from optimal value. Furthermore, we also conduct simulations based on a general WBAN model to comprehensively illustrate the advantages of the proposed algorithm. At the end of the evaluation, we validate the feasibility of our proposed scheme via an implementation discussion. MDPI 2017-06-02 /pmc/articles/PMC5492559/ /pubmed/28574455 http://dx.doi.org/10.3390/s17061267 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Yu
Zhang, Bing
Zhang, Shi
A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks
title A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks
title_full A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks
title_fullStr A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks
title_full_unstemmed A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks
title_short A Lifetime Maximization Relay Selection Scheme in Wireless Body Area Networks
title_sort lifetime maximization relay selection scheme in wireless body area networks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5492559/
https://www.ncbi.nlm.nih.gov/pubmed/28574455
http://dx.doi.org/10.3390/s17061267
work_keys_str_mv AT zhangyu alifetimemaximizationrelayselectionschemeinwirelessbodyareanetworks
AT zhangbing alifetimemaximizationrelayselectionschemeinwirelessbodyareanetworks
AT zhangshi alifetimemaximizationrelayselectionschemeinwirelessbodyareanetworks
AT zhangyu lifetimemaximizationrelayselectionschemeinwirelessbodyareanetworks
AT zhangbing lifetimemaximizationrelayselectionschemeinwirelessbodyareanetworks
AT zhangshi lifetimemaximizationrelayselectionschemeinwirelessbodyareanetworks