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中文摘要：
在无线传感器网络中,为了避免不必要的能耗而达到延长网络寿命的目的,提出一种低功耗的无线传感器网络MAC协议.此协议在低功率侦听（LPL）基础上进行修改,通过前一次轮询的结果来推测这一次的流量状况,根据流量状况自适应调整侦听睡眠周期结构中相应的占空比,从而降低能耗.通过编程仿真并结合实验,对此模型进行验证,证明了此算法能降低能耗.
英文摘要：
In order to avoid unnecessary energy consumption and prolong life of wireless senor networks（WSNs）,a low power consumption MAC protocol for WSNs is proposed.This protocol is modified on the basis of low power listening（LPL）,while traffic condition is calculated by the last polling result,then duty cycle is adjusted on the basis of traffic condition to reduce energy consumption.This model is verified through programming simulation and combined with experiment,it shows that this algorithm can reduce energy consumption.
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