基于能量消耗的LEACH动态持续周期的优化研究

发布时间：2018-03-20 11:09

本文选题：无线传感网　切入点：能量消耗　出处：《北京理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：无线传感器网络是一种特殊的自组织网络。它可以对自然界中的物理现象进行检测,并将其转换成数据进行处理、分析。在无线传感网络中,均衡网络中节点的能量消耗是无线传感网络中研究的重要问题。网络上的能量消耗均衡问题直接影响整个网络各方面的性能。在无线传感器网络中,节点的能量由干电池供应,能量非常有限,如何均衡能量消耗是近些年无线传感网研究者研究的重点,好的协议可以延长网络的生命周期,提高网络的性能。其中,LEACH协议是一个很好的能量节省协议,它采用了分簇的方法,将数据集中在几个节点转发,节省了大部分能量消耗,并且采取了周期建簇的思想,我们把建簇周期称作LEACH的一个持续周期,以此均衡节点间的能量消耗,提高网络的生命周期。但是,持续周期时间的长短也对节点的能量消耗有很大影响。本文的主要目标是在LEACH协议的基础上,找到优化的持续周期时间,在此时间下,LEACH协议能获得最大的网络生命周期。基于这个目的,本文首先研究了在静态能量消耗和均匀分簇的情况下,LEACH持续周期时间的优化。然后考虑到LEACH用于真实环境的问题,即节点的能量消耗是动态的,而且分簇往往不均匀,对LEACH协议做出一些改进,提出了动态调整持续周期时间的优化算法,均衡节点的能量消耗。最后通过NS2仿真平台,对计算得出的理论上优化的持续周期时间进行仿真,并且在多个网络性能指标上进行分析,验证了方法的准确性和有效性。
[Abstract]:Wireless sensor network is a special self-organizing network. It can detect physical phenomena in nature and convert them into data processing and analysis. The energy consumption of nodes in wireless sensor networks is an important issue in wireless sensor networks. The energy consumption equalization problem directly affects the performance of the whole network. In wireless sensor networks, the energy of nodes is supplied by dry batteries. Energy is very limited, how to balance energy consumption is the research focus of wireless sensor network researchers in recent years, good protocols can prolong the network life cycle and improve the performance of the network, among which the Leach protocol is a good energy saving protocol. It adopts the clustering method, which concentrates the data on several nodes, saves most of the energy consumption, and adopts the idea of periodic clustering. We call the period of cluster building a continuous period of LEACH. In order to balance the energy consumption between nodes and improve the lifetime of the network, however, the duration of the cycle also has a great impact on the energy consumption of the nodes. The main goal of this paper is based on the LEACH protocol. Find the optimal duration, where the Leach protocol can get the maximum network lifecycle. For this purpose, In this paper, we first study the optimization of Leach duration in the case of static energy consumption and uniform clustering. Then we consider the problem that LEACH is used in real environment, that is, the energy consumption of nodes is dynamic, and the clustering is often uneven. Some improvements are made to the LEACH protocol, and an optimization algorithm for dynamically adjusting the duration of the cycle time is proposed to balance the energy consumption of the nodes. Finally, through the NS2 simulation platform, the theoretical optimization of the duration of the cycle time is simulated. The accuracy and validity of the method are verified by analyzing several network performance indexes.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212.9;TN929.5

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