无线传感网络中基于电力能效优化的接入控制协议  

Energy power efficiency optimization-based MAC protocol for wireless sensor networks

作　　者：李道德 LI Daode(State Key Laboratory of Rail Transit Engineering Informatization(FSDI),Xi’an 710043,China)

机构地区：[1]轨道交通工程信息化国家重点实验室(中铁一院),陕西西安710043

出　　处：《电子设计工程》2022年第5期131-135,共5页Electronic Design Engineering

摘　　要：有效使用电力能量是延长无线传感网络(Wireless Sensor Networks,WSNs)寿命的主要方式。为此,提出基于双重侦听时长的多层MAC协议。DL-ML-MAC协议将侦听时长划分为L层,节点被分布于L层内,减少空闲侦听时长。不同层节点的侦听时长不重叠,减少能耗,降低碰撞概率。同时,采用双重侦听时长策略,即低能量的节点使用短的侦听时长,而高能量的节点使用长的侦听时长。仿真数据表明,相比于休眠机制的MAC协议,所提出的DL-ML-MAC协议的能量消耗率下降了约34.1%。The efficient use of energy is an important performance target to prolong the lifetime of Wireless Sensor Networks(WSNs).Therefore,Dual-listening periods-based multi-layer MAC protocol is proposed in this paper. In DL-ML-MAC with L layers,nodes are distributed into L layers to reduce the idle listening time. The listen periods of the nodes in different layers are non-overlapping. This will reduce energy consumption and collision. In addition,DL-ML-MAC introduce dual-listening periods,the lowpower nodes work with short listen period, and the high-power nodes work with a larger listen period. The proposed protocol saves 34.1% of the energy compared to S-MAC.

关 键 词：无线传感网络 MAC 能耗 多层 侦听时长 

分 类 号：TN929.5[电子电信—通信与信息系统]