PMID- 23193313 OWN - NLM STAT- MEDLINE DCOM- 20140501 LR - 20131119 IS - 2168-2208 (Electronic) IS - 2168-2194 (Linking) VI - 17 IP - 1 DP - 2013 Jan TI - Realization of public m-Health service in license-free spectrum. PG - 19-29 LID - 10.1109/TITB.2012.2227117 [doi] AB - Public m-health is a new medical service under intensive development, which provides unobtrusive monitoring of peoples health conditions from anywhere at any time to enable detection of deteriorating health conditions before severe discomfort or disability occur. A key challenge in practical implementation of public m-health is the use of shared licensefree spectrum by Body Area Networks (BANs) to report sampled vital signs continuously and in real-time. A cognitive medium access control method called Centralized Body Area Network Access Scheme (CBAS) is proposed in this paper to reduce access delay in a BAN in the presence of coexistent systems. By opportunistic extraction of idle spaces from a pool of orthogonal channels, CBAS dynamically adjusts a BANs channel access pattern according to the current interference environment, and improves the BANs visibility among coexistent networks. Performance of a BAN under CBAS is analyzed by modeling the system as a preemptive-resume priority queue. Numerical and simulation results show that the queuing-delay and throughput of a BAN employing CBAS outperforms those of a BAN that utilizes a single channel statically, as channel access opportunities suffer less fragmentations and interruptions. FAU - Torabi, N AU - Torabi N FAU - Leung, V C M AU - Leung VC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121115 PL - United States TA - IEEE J Biomed Health Inform JT - IEEE journal of biomedical and health informatics JID - 101604520 SB - IM MH - Computer Simulation MH - Humans MH - *Models, Theoretical MH - Monitoring, Ambulatory/*methods MH - Public Health MH - Remote Sensing Technology/*methods MH - Signal Processing, Computer-Assisted MH - Telemedicine/*methods EDAT- 2012/11/30 06:00 MHDA- 2014/05/03 06:00 CRDT- 2012/11/30 06:00 PHST- 2012/11/30 06:00 [entrez] PHST- 2012/11/30 06:00 [pubmed] PHST- 2014/05/03 06:00 [medline] AID - 10.1109/TITB.2012.2227117 [doi] PST - ppublish SO - IEEE J Biomed Health Inform. 2013 Jan;17(1):19-29. doi: 10.1109/TITB.2012.2227117. Epub 2012 Nov 15.