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An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments
Wireless electrocardiogram (ECG) monitoring involves the measurement of ECG signals and their timely transmission over wireless networks to remote healthcare professionals. However, fluctuations in wireless channel conditions pose quality-of-service challenges for real-time ECG monitoring services i...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4109261/ https://www.ncbi.nlm.nih.gov/pubmed/25097886 http://dx.doi.org/10.1155/2014/678309 |
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author | Kang, Kyungtae |
author_facet | Kang, Kyungtae |
author_sort | Kang, Kyungtae |
collection | PubMed |
description | Wireless electrocardiogram (ECG) monitoring involves the measurement of ECG signals and their timely transmission over wireless networks to remote healthcare professionals. However, fluctuations in wireless channel conditions pose quality-of-service challenges for real-time ECG monitoring services in a mobile environment. We present an adaptive framework for layered coding and transmission of ECG data that can cope with a time-varying wireless channel. The ECG is segmented into layers with differing importance with respect to the quality of the reconstructed signal. According to this observation, we have devised a simple and efficient real-time scheduling algorithm based on the earliest deadline first (EDF) policy, which decides the order of transmitting or retransmitting packets that contain ECG data at any given time for the delivery of scalable ECG data over a lossy channel. The algorithm takes into account the differing priorities of packets in each layer, which prevents the perceived quality of the reconstructed ECG signal from degrading abruptly as channel conditions worsen, while using the available bandwidth efficiently. Extensive simulations demonstrate this improvement in perceived quality. |
format | Online Article Text |
id | pubmed-4109261 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-41092612014-08-05 An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments Kang, Kyungtae ScientificWorldJournal Research Article Wireless electrocardiogram (ECG) monitoring involves the measurement of ECG signals and their timely transmission over wireless networks to remote healthcare professionals. However, fluctuations in wireless channel conditions pose quality-of-service challenges for real-time ECG monitoring services in a mobile environment. We present an adaptive framework for layered coding and transmission of ECG data that can cope with a time-varying wireless channel. The ECG is segmented into layers with differing importance with respect to the quality of the reconstructed signal. According to this observation, we have devised a simple and efficient real-time scheduling algorithm based on the earliest deadline first (EDF) policy, which decides the order of transmitting or retransmitting packets that contain ECG data at any given time for the delivery of scalable ECG data over a lossy channel. The algorithm takes into account the differing priorities of packets in each layer, which prevents the perceived quality of the reconstructed ECG signal from degrading abruptly as channel conditions worsen, while using the available bandwidth efficiently. Extensive simulations demonstrate this improvement in perceived quality. Hindawi Publishing Corporation 2014 2014-07-03 /pmc/articles/PMC4109261/ /pubmed/25097886 http://dx.doi.org/10.1155/2014/678309 Text en Copyright © 2014 Kyungtae Kang. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Kang, Kyungtae An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments |
title | An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments |
title_full | An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments |
title_fullStr | An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments |
title_full_unstemmed | An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments |
title_short | An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments |
title_sort | adaptive framework for real-time ecg transmission in mobile environments |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4109261/ https://www.ncbi.nlm.nih.gov/pubmed/25097886 http://dx.doi.org/10.1155/2014/678309 |
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