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Medical-Grade Channel Access and Admission Control in 802.11e EDCA for Healthcare Applications

Title
Medical-Grade Channel Access and Admission Control in 802.11e EDCA for Healthcare Applications
Author(s)
Son, Sung HwaPark, Kyung-JoonPark, Eun-Chan
Issued Date
2016-08
Citation
PLoS ONE, v.11, no.8
Type
Article
Keywords
DEGRADATIONHealth Care SystemNetworks
ISSN
1932-6203
Abstract
In this paper, we deal with the problem of assuring medical-grade quality of service (QoS) for real-time medical applications in wireless healthcare systems based on IEEE 802.11e. Firstly, we show that the differentiated channel access of IEEE 802.11e cannot effectively assure medical-grade QoS because of priority inversion. To resolve this problem, we propose an efficient channel access algorithm. The proposed algorithm adjusts arbitrary interframe space (AIFS) in the IEEE 802.11e protocol depending on the QoS measurement of medical traffic, to provide differentiated near-absolute priority for medical traffic. In addition, based on rigorous capacity analysis, we propose an admission control scheme that can avoid performance degradation due to network overload. Via extensive simulations, we show that the proposed mechanism strictly assures the medical-grade QoS and improves the throughput of low-priority traffic by more than several times compared to the conventional IEEE 802.11e. © 2016 Son et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
URI
http://hdl.handle.net/20.500.11750/5085
DOI
10.1371/journal.pone.0160052
Publisher
Public Library of Science
Related Researcher
  • 박경준 Park, Kyung-Joon
  • Research Interests Cyber-Physical Systems; Robot Operating System (ROS); Smart Manufacturing
Files in This Item:
10.1371_journal.pone.0160052.pdf

10.1371_journal.pone.0160052.pdf

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Appears in Collections:
Department of Electrical Engineering and Computer Science CSI(Cyber-Physical Systems Integration) Lab 1. Journal Articles

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