面向节能的医疗无线体域网MAC协议研究
首发时间:2015-12-14
摘要:随着无线通信技术、微电子技术以及传感器技术的发展,无线体域网成为当下的研究热点,并在医疗领域得到了广泛的应用。在无线体域网中,传感器节点的能耗将影响到网络的生命周期,本文针对传感器节点能量受限且难以更换的问题提出MAC层的节能策略,设计一种基于数据紧急度、数据重传以及节点剩余能量的混合优先级信道接入机制,根据节点优先级状态,选择调度型接入方式或者竞争型接入方式,从而可以在保证重要数据优先到达的情况下,尽可能降低冲突发生,并采取适当的节点休眠机制,达到节省能量的目的。通过仿真结果可以得出,本文提出的MAC层接入策略可以有效的降低节点能耗。
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Research on energy-efficient MAC protocol of Medical Wireless Body Area Network
Abstract:With the development of wireless communications, micro-electronics and sensors, Wireless Body Area Network has been one of the research hotpots and it has been wildly applied in the medical field. The energy consumption of sensor nodes in the network will affect the lifecycle of Wireless Body Area Network. In this paper, a MAC layer energy saving strategy has been raised to solve the problem of sensor nodes' limited energy. First of all, a kind of mixture priority level energy saving method has been raised for the medical treatment condition, in which the important message can be sent and received while conflict are reduced. Secondly, an appropriate dormancy mechanism has been taken to achieve the purpose of saving energy. Finally, the simulation results show that, the MAC layer method are useful in saving energy.
Keywords: Wireless Body Area Network MAC layer protocol priority power-saving strategies
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No.4669729112026114****
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