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Wireless LAN with Medical-Grade QoS for E-Healthcare  

Lee, Hyung-Ho (School of Electrical Engineering and Computer Science and ASRI, Seoul National University)
Park, Kyung-Joon (Department of Information and Communication Engineering, DGIST)
Ko, Young-Bae (School of Information and Computer Engineering, Ajou University)
Choi, Chong-Ho (School of Electrical Engineering and Computer Science and ASRI, Seoul National University)
Publication Information
Journal of Communications and Networks / v.13, no.2, 2011 , pp. 149-159 More about this Journal
Abstract
In this paper, we study the problem of how to design a medical-grade wireless local area network (WLAN) for healthcare facilities. First, unlike the IEEE 802.11e MAC, which categorizes traffic primarily by their delay constraints, we prioritize medical applications according to their medical urgency. Second, we propose a mechanism that can guarantee absolute priority to each traffic category, which is critical for medical-grade quality of service (QoS), while the conventional 802.11e MAC only provides relative priority to each traffic category. Based on absolute priority, we focus on the performance of real-time patient monitoring applications, and derive the optimal contention window size that can significantly improve the throughput performance. Finally, for proper performance evaluation from a medical viewpoint, we introduce the weighted diagnostic distortion (WDD) as a medical QoS metric to effectively measure the medical diagnosability by extracting the main diagnostic features of medical signal. Our simulation result shows that the proposed mechanism, together with medical categorization using absolute priority, can significantly improve the medical-grade QoS performance over the conventional IEEE 802.11e MAC.
Keywords
Absolute priority; IEEE 802.11e wireless local area network (WLAN); medical-grade quality of service (QoS); wireless healthcare system;
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1 K. W. Goh, J. Lavanya, Y. Kim, E. K. Tan, and C. B. Soh, "A PDA-based ECG beat detector for home cardiac care," in Proc. IEEE Eng. Med. Biol. Soc., Jan. 2006, pp. 375-378.
2 IEEE, "IEEE Standard for Information Technology-Telecommunication and Information Exchange Between Systems-LAN/MAN Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Amendment 8: Medium Access control (MAC) Quality of Service Enhancements," IEEE Std 802.11e-2005, 2005.
3 S. Choi, J. Del Prado, and S. Mangold, "IEEE 802.11e contention-based channel access (EDCF) performance evaluation," in Proc. IEEE ICC, vol. 2, 2003, pp. 1151-1156.
4 Z. Kong, D. H. K. Tsang, B. Bensau, and D. Gao, "Performance analysis of IEEE 802.11e contention-based channel access," IEEE J. Sel. Areas Commun., vol. 22, no. 10, pp. 2095-2106, 2004.   DOI   ScienceOn
5 J. Hui and M. Devetsikiotis, "A unified model for the performance analysis of IEEE 802.11e EDCA," IEEE Trans. Commun., vol. 53, no. 9, pp. 1498-1510, 2005.   DOI   ScienceOn
6 IEEE, "Draft health informatics-point-of-care medical device communication-technical report-guidelines for the use of RF wireless technology," P11073-00101/D5, Jun 2008.
7 G. Bianchi, "Performance analysis of the IEEE 802.11 distributed coordination function," IEEE J. Sel. Areas Commun., vol. 18, no. 3, 2000.
8 P. S. Hamilton and W. J. Tompkins, "Quantitative investigation of QRS detection rules using the MIT/BIH arrhythmia database," IEEE Trans. Biomed. Eng., vol. 33, no. 12, pp. 1157-1165, Dec. 1986.
9 Y. Zigel, A. Cohen, and A. Katz, "The weighted diagnostic distortion (WDD) measure for ECG signal compression," IEEE Trans. Biomed. Eng., vol. 47, no. 11, pp. 1422-1430, Nov. 2000.   DOI   ScienceOn
10 The network simulator (ns-2). [Online]. Available: http://www.isi.edu/nsnam/ns
11 G. B. Moody and R. G. Mark, "The impact of the MIT-BIH arrhythmia database," IEEE Eng.Med. Biol. Mag., vol. 20, no. 3, pp. 45-50, May/June 2001.   DOI   ScienceOn
12 GE Healthcare. Product features-wireless technologies. [Online]. Available: http://www.gehealthcare.com
13 E. Kershaw, "Wireless networking reshapes the face of patient monitoring systems," Biomed. Instrum. & Technol., May/June 2002.
14 I. A. Gieras, "The proliferation of patient-worn wireless telemetry technologies within the U.S. healthcare environment," in Proc. IEEE Conf. Inf. Technol. Appl. Biomedicine, 2003.
15 NIST Advanced Network Technologies Division. Healthcare goes wireless. [Online]. Available: http://w3.antd.nist.gov/Health.shtml
16 N. Chevrollier and N. Golmi, "On the use of wireless network technologies in healthcare environments," in Proc. IEEE ASWN, June 2005, pp. 147-152.
17 US FDA/Center for Device and Radiological Health (CDRH) (2007. Jan.). Draft guidance for industry and FDA staff.radio frequency wireless technology in medical devices. [Online]. Available: http://www.fda.gov/cdrh/osel/guidance/1618.html
18 Philips. Patient monitoring.intellivue telemetry system. [Online]. Available: http://www.medical.philips.com
19 Welch Allyn. Micropaq wearable monitor. [Online]. Available: http://www.welchallyn.com
20 Drager medical. [Online]. Available: http://www.draeger.com
21 M. Spaghetti (2008. Nov). A symposium on wireless technologies in hospital health care. [Online]. Available: http://wirelesshealth.poly.edu/index.php?view=home
22 P. Sherman and C. Campbell, "Assessing existing telemetry systems for risk of electromagnetic interference," J. Clinical Eng., pp. 144-154, 2001.
23 S. D. Baker, "Building reliability into your digital telemetry system," Health Management Technol., vol. 23, no. 6, June 23, 2002.
24 N. Golmie, D. Cypher, and O. Rebala, "Performance analysis of low rate wireless technologies for medical applications," Comput. Commun., vol. 28, no. 10, pp. 1266-1275, June 16, 2005.   DOI   ScienceOn
25 US FDA/Center for Device and Radiological Health (CDRH) (2006. May). Medical product safety network-current issues in medical telemetry and wireless connectivity. [Online]. Available: http://www.fda.gov/cdrh/medsun/AudioConffiles/MedicalTelemetryWireless/telemetry.html
26 M. Sun, Q. Wang, and L. Sha, "Building reliable MD PnP systems," in Proc. Joint Workshop on High Confidence Medical Devices, Software, and Systems and Medical Device Plug-and-Play Interoperability, June 25-27, 2007.
27 R. Hampton (2008. July). A day in the life: Wireless risks in the hospital environment. IEEE 802 Plenary Tutorials. [Online]. Available: http://www.ieee802.org/802tutorials/july08/IEEE802dot15Presentation-Hampton.ppt
28 K. A. Townsend, J. W. Haslett, T. K. K. Tsang, M. N. El-Gamal, and K. Iniewski, "Recent advances and future trends in low power wireless systems for medical applications," in Proc. IDEAS, July 20-24, 2005.
29 N. Ansari, "Wireless technology advances and challenges for telemedicine," IEEE Commun. Mag., Apr. 2006.
30 D. Cypher, N. Chevrollier, N. Montavont, and N. Golmie, "Prevailing over wires in healthcare environments: Benefits and challenges," IEEE Commun. Mag., pp. 56-63, Apr. 2006.
31 U. Varshney, "Using wireless technologies in healthcare," Int. J. Mobile Commun., vol. 4, no. 3, pp. 354-368, 2006.   DOI
32 U. Varshney, "Pervasive healthcare and wireless health mornitoring," Mobile Networks Appl., vol. 12, pp. 113-127, 2007.   DOI   ScienceOn
33 L. S. Nolan-Avila, B. E. Paganelli, and R. E. Norden-Paul, "The medical information bus: An automated method of capturing data at the bedside," Computers in Nursing, pp. 115-121, 1988.
34 S. D. Baker and D. H. Hoglund, "Medical-grade, mission-critical wireless networks," IEEE Eng. Med. Biol. Mag., vol. 27, no. 2, pp. 86-95, Mar./Apr. 2008.
35 K.-J. Park, D. M. Shrestha, Y.-B. Ko, N. H. Vaidya, and L. Sha, "IEEE 802.11 WLAN for medical-grade QoS," in Proc. ACM WiMD, May 18, 2009.
36 Tutorial #2: Wireless and wired network requirements for safety in healthcare. IEEE 802 Plenary Tutorials. [Online]. Available: http://www.ieee802.org/802tutorials/index.html
37 IEEE, "IEEE standard for medical device communications-overview and framework," IEEE Std. 1073-1996, 1996.
38 R. van der Togt, E. J. van Lieshout, R. Hensbroek, E. Beinat, J. M. Binnekade, and P. J. M. Bakker, "Electromagnetic interference from radio frequency identification inducing potentially hazardous incidents in critical care medical equipment," JAMA, vol. 299, pp. 2884-2890, 2008.   DOI   ScienceOn
39 FCC. Wireless services.wireless medical telemetry (WMTS Home). [Online]. Available: http://wireless.fcc.gov/services/index.htm?job=service home&id=wirelessmedicaltelemetry
40 MD PnP Program. Medical device "Plug-and-play" interoperability program. [Online]. Available: http://mdpnp.org/HomePage.php
41 M. Paksuniemi, H. Sorvoja, E. Alasaarela, and R. Myllyla, "Wireless sensor and data transmission needs and technologies for patient monitoring in the operating room and intensive care unit," in Proc. IEEE Eng. Med. Biol. Soc., Jan. 2006, pp. 5182-5185.
42 U. Varshney, "Patient monitoring using infrastructure-oriented wireless LANs," Int. J. Electron. Healthcare, vol. 2, no. 2, pp. 149-163, 2006.
43 H. Y. Zhou, K. M. Hou, J. Ponsonnaille, L. Gineste, and C. de Vaulx, "A real-time continuous arrhythmias detection system: RECAD," in Proc. IEEE Eng. Med. Biol. Soc., Jan. 2006, pp. 875-881.