期刊
IEEE SENSORS JOURNAL
卷 20, 期 7, 页码 3914-3929出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2019.2958936
关键词
Wireless body area network; coexisting; interference; QoS
资金
- Ministry of Science and Technology, Taiwan [MOST 108-2221-E-005-019-MY3, MOST 108-2218-E005-013]
In modern days, as medical technology advances and the worlds population grows, healthcare has been undergoing crucial changes. The common practice of clinical treatment is gradually being overhauled by ubiquitous healthcare systems. The wireless body area networks (WBANs) are becoming increasingly important for future healthcare applications. According to the human physiological information, WBAN not only sends the real-time notification to the user but also decreases the transmission delay of patient information to the physician for the medical decision. As medical emergency information must be transmitted after a disaster occurrence, the number of WBANs and emergency traffic increase in the particular area. In the situations, a large number of WBANs may be close to each other, thus causing inter-WBAN interference and increasing the transmission delay. Therefore, in this paper, we propose a dynamic channel and superframe selection scheme (DCSSS) in IEEE 802.15.6 WBANs. DCSSS records the channel interference degree which is used to adaptively select different superframe structures and to effectively transmit data. It mitigates the inter-WBAN interference to improve the transmission delay and QoS violation. Additionally, it increases the chance of successful data transmission before the deadline of the data as well as reduces power consumption.
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