A control channel based MAC protocol for time critical and emergency communications in Industrial Wireless Sensor Networks

M. Raza, H. Le‐Minh, N. Aslam, S. Hussain, W. Ellahi
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引用次数: 13

Abstract

For time critical applications in industrial environments, failure in communication or unwanted delay can have devastating effects. It is therefore, important that Industrial Wireless Sensor Networks (IWSNs) offer reliable communication platform for time critical applications without violating the hard deadlines. In this paper, a MAC protocol for time critical and emergency communications is proposed. The proposed protocol, EE-MAC incorporates emergency communication and allows immediate channel access for such data. The paper presents mathematical model of the proposed protocol. For evaluation purposes, the performance of EE-MAC is compared to IEEE 802.15.4e LLDN. The results show that the proposed protocol offers up to 92% reduction in channel access delay of emergency communication at the cost of 5% to 15% increase in delay of non-critical and less time-sensitive data.
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一种基于控制信道的MAC协议,用于工业无线传感器网络中的时间关键和应急通信
对于工业环境中的时间关键型应用程序,通信故障或不必要的延迟可能会产生破坏性影响。因此,重要的是工业无线传感器网络(iwsn)为时间关键型应用提供可靠的通信平台,而不会违反硬截止日期。本文提出了一种用于时间关键型和紧急通信的MAC协议。提议的协议EE-MAC包含紧急通信,并允许对此类数据进行即时通道访问。本文给出了该协议的数学模型。为了评估目的,将EE-MAC的性能与IEEE 802.15.4e LLDN进行比较。结果表明,该协议可将应急通信的信道访问延迟降低92%,但代价是非关键数据和时间敏感性较低的数据的延迟增加5% ~ 15%。
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