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针对无线传感器网络占空比MAC协议在链路或节点失效环境下易导致严重的能量浪费问题,提出了一种基于Grid Quorum的异步低占空比M AC协议-AGQ-M AC(Asynchronous Grid Quorum M AC).AGQ-M AC采用Grid Quorum组分配信道,通过动态调配Quorum比率得到了节点的最优占空比,并在邻节点发现过程中采用双前导序文抽样来监测信道状态,以减少节点唤醒时间从而达到能量高效.仿真实验结果表明,与其他占空比MAC协议相比,AGQ-MAC延长了网络生存时间,降低了网络能耗,提高了邻发现数据传输率,同时保持较低的平均邻发现延迟.
Aiming at the serious energy waste caused by duty cycle MAC protocol of WSN in link or node failure environment, an asynchronous low duty cycle M AC protocol based on Grid Quorum (AGC-M AC) is proposed. Asynchronous Grid Quorum M AC) .AGQ-M AC uses the Grid Quorum group to allocate channels, obtains the optimal duty cycle of the node by dynamically allocating Quorum ratios, and monitors the channel state by using dual-preamble sequences during neighbor discovery to reduce the number of nodes Wake up time to achieve energy efficiency.The simulation results show that compared with other duty cycle MAC protocol, AGQ-MAC prolongs network lifetime, reduces network energy consumption and improves neighbor discovery data transmission rate, while maintaining a low Average neighbor discovery delay.