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基于异步MAC协议的WSN节点通信能耗模型的研究及应用

DOI: 10.15918/j.tbit1001-0645.2015.02.012

Keywords: 线传感器网络(WSN) B-MAC协议 通信能耗模型

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Abstract:

为进一步减小采用B-MAC协议线传感器节点的能量消耗,对线通信模块接收、发送、监听、休眠的电流消耗和时间特性进行了实验测试. 并根据异步MAC协议的特点,将网络负载参数进一步细分,引入节点发送间隔、接收间隔、每次发送字节数、每次接收字节数这4个参量,同时考虑节点接收信号时所处状态的概率建立通信能耗模型,并给出能耗模型的最优解析解,使得能耗参数在不同网络负载和收发间隔下达到最优. 实验结果表明,采用能量最优参数的B-MAC协议比普通B-MAC协议的能量消耗更少,明显减少了WSN节点在通信过程中能量的消耗,延长了节点的工作寿命

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