DocumentCode :
2737997
Title :
A context aware MAC protocol for medical Wireless Body Area Network
Author :
Yan, Zhisheng ; Liu, Bin
Author_Institution :
Sch. of Inf. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei, China
fYear :
2011
fDate :
4-8 July 2011
Firstpage :
2133
Lastpage :
2138
Abstract :
During long-term medical monitoring in Wireless Body Area Networks (WBAN), network requirements (i.e. traffic loads and latency) of various data sources may be different at different time. High traffic loads may lead to data overload and unacceptable latency, which makes potential danger of patients undiagnosed. It is important that real-time transmission of life-critical data can be always guaranteed. To address this problem, a context-aware MAC protocol is presented in this paper. According to analysis of collected life parameters, the protocol can switch between normal state and emergency state. As a result, data rate and duty cycle of sensor nodes are dynamically changed to meet the requirement of latency and traffic loads in a contexta-ware way. To save the power consumption, a TDMA-based MAC frame structure is used. Moreover, a novel optional synchronization scheme is proposed to decrease the overhead caused by traditional TDMA synchronization scheme. Simulation results show significant improvements of our design on latency and power consumption.
Keywords :
access protocols; biomedical telemetry; body area networks; synchronisation; telecommunication traffic; time division multiple access; TDMA-based MAC frame structure; WBAN; context aware MAC protocol; medical monitoring; medical wireless body area network; optional synchronization scheme; power consumption; sensor nodes; traditional TDMA synchronization scheme; traffic loads; IEEE 802.15 Standards; Media Access Protocol; Monitoring; Power demand; Synchronization; Time division multiple access; Context Aware; MAC; TDMA; WBAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-9539-9
Type :
conf
DOI :
10.1109/IWCMC.2011.5982864
Filename :
5982864
Link To Document :
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