An adaptive MAC protocol for real-time and reliable communications in medical cyber-physical systems

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• 作者：Feng Xia (1)
  Linqiang Wang (1)
  Daqiang Zhang (2)
  Daojing He (3)
  Xiangjie Kong (1)
  
  1. School of Software ; Dalian University of Technology ; Dalian ; 116620 ; China
  2. School of Software Engineering ; Tongji University ; Shanghai ; China
  3. School of Computer Science and Engineering ; South China University of Technology ; Guangzhou ; China
  
• 关键词：IEEE 802.15.4 ; Medical cyber ; physical systems ; Real ; time communications ; Reliability ; MAC protocol
• 刊名：Telecommunication Systems
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：58
• 期：2
• 页码：125-138
• 全文大小：1,802 KB
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• 刊物类别：Business and Economics
• 刊物主题：Economics
  Business Information Systems
  Computer Communication Networks
  Artificial Intelligence and Robotics
  Probability Theory and Stochastic Processes
  
• 出版者：Springer Netherlands
• ISSN：1572-9451

文摘

With the increasing demands for high-quality health-care services, medical cyber-physical systems over wireless body sensor networks have emerged as a promising solution for vital life signals monitoring. These systems require the communication protocols to be both reliable and real-time in data transmissions. IEEE 802.15.4 can be regarded as the canonical protocols in this area owing to its low-power and low-cost features. However, it falls short of reliability and timeliness guarantees. To address this issue, we propose an adaptive MAC protocol based on IEEE 802.15.4, namely Ada-MAC. The proposed protocol combines schedule-based on time-triggered protocol and contention-based CSMA/CA mechanism. It can not only enable dynamic Guaranteed Time Slots allocation but also provide differentiated services for different nodes according to their data types. The proposed protocol is implemented on the OMNeT++ platform. Extensive simulations are conducted to evaluate the performance of Ada-MAC in comparison with the traditional IEEE 802.15.4 MAC. The results show the superiority of the proposed protocol in terms of reliability and timeliness.