基于簇的能量均衡无线传感器网络时间同步算法

发布时间：2018-01-25 00:05

本文关键词： 无线传感器网络时间同步簇多跳能量均衡　出处：《计算机应用》2014年09期 　论文类型：期刊论文

【摘要】：针对现有时间同步算法应用于多跳无线传感器网络时存在的误差累计和能耗不均衡问题,提出一种基于簇的能量均衡时间同步算法。该算法基于簇状分层的网络拓扑,簇首之间采用双向监听机制代替双向交换机制,以减小通信开销和发送时延带来的同步误差;簇成员节点利用双向交换和单向广播相结合的机制与簇首同步,并通过最优剩余能量选取回应节点,均衡簇内节点能耗。对提出的新方法和传统的同步算法在精度和能耗方面进行理论分析和仿真验证,结果表明,该算法在保证较高同步精度的前提下可以减小通信开销,均衡网内节点能量消耗,延长网络生命周期。
[Abstract]:Aiming at the existing time synchronization algorithms used in multi-hop wireless sensor networks, error accumulation and energy consumption are unbalanced. This paper presents a cluster-based energy equalization time synchronization algorithm, which is based on a cluster hierarchical network topology and uses a bidirectional listening mechanism instead of a two-way switching mechanism between cluster heads. In order to reduce the synchronization error caused by communication overhead and transmission delay; The cluster member node synchronizes with the cluster head using the mechanism of bidirectional switching and one-way broadcasting, and selects the response node through the optimal residual energy. The proposed new method and the traditional synchronization algorithm are theoretically analyzed and simulated in terms of accuracy and energy consumption, and the results show that. This algorithm can reduce the communication overhead, equalize the energy consumption of the nodes in the network and prolong the network life cycle under the premise of high synchronization accuracy.
【作者单位】：华北电力大学电气与电子工程学院;
【基金】：国家科技重大专项基金资助项目(2010ZX03006-005-01) 中央高校基本科研业务费专项资金资助项目(12QX12)
【分类号】：TN929.5;TP212.9
【正文快照】： 0引言无线传感器网络(Wireless Sensor Network,WSN)是由分布在物理空间上的大量微型传感器节点通过无线电通信形成的一个多跳的自组织网络系统,它能够实时监测、感知和采集各种环境或监测对象的信息并对其进行处理,在国防军事、生物医疗、环境监测、抢险救灾、交通管理和工业

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