Title :
CA-MAC: A Hybrid context-aware MAC protocol for wireless body area networks
Author :
Bin Liu ; Zhisheng Yan ; Chang Wen Chen
Author_Institution :
Sch. of Inf. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
In wireless body area network (WBAN), various data sources are generated by different type of sensors and transmitted to the master node, which may result in temporally different traffic loads. With time-varying channel caused by frequent body movement, transmitted data may also experience deep fading and packet loss. To meet the complex transmission requirements in WBAN, a traffic-aware and channel-aware MAC protocol is required. In this paper, we introduce CA-MAC, a context-aware MAC protocol using a hybrid of contention-based and TDMA-based approaches. A dynamic control mechanism is proposed to address fading channel by adaptively modifying MAC frame structure. Schedule-based and polling-based techniques are also used to manage periodic, bursty, and emergency traffic requirement. Simulation results confirm the advantage of CA-MAC on reliability over existing TDMA-based approach.
Keywords :
body area networks; telecommunication traffic; time division multiple access; time-varying channels; wireless channels; CA-MAC; TDMA-based approach; channel-aware MAC protocol; contention-based approach; deep fading; dynamic control mechanism; emergency traffic requirement management; fading channel; frequent body movement; hybrid context-aware MAC protocol; master node; packet loss; polling-based technique; schedule-based technique; time-varying channel; traffic loads; traffic-aware MAC protocol; wireless body area network; Body area networks; Fading; Media Access Protocol; Sensors; Time division multiple access; Wireless communication; Wireless sensor networks; Context Aware; Hybrid; MAC; WBAN;
Conference_Titel :
e-Health Networking Applications and Services (Healthcom), 2011 13th IEEE International Conference on
Conference_Location :
Columbia, MO
Print_ISBN :
978-1-61284-695-8
Electronic_ISBN :
978-1-61284-696-5
DOI :
10.1109/HEALTH.2011.6026748
