一种大规模无线传感器网络的协议框架、网络结构和能耗分析

本文定义了一种适用于大范围数据采集的传感器网络构架DMCH(Directed Multi-Hop Clustering Hierarchy)及相关的媒体接入层和网络层协议,并建立数学模型对该网络结构和能耗状况进行了分析.DMCH通过预先设置在网络探测区域内的功能较强的小基站,将网络划分为分布相对均匀的群,在每个群内又将节点分级,形成分群多级的结构.同时,采用小基站轮流作群首的策略,保证了网络能耗的均衡性.DMCH具有可扩展性强、能耗均匀、协议简单、成本低、连通性好等特点.仿真结果为网络结构和能耗分析提供了依据并验证了各项设计指标,通过仿真与典型的大规模传感器网络协议MINA(Multi-Hop infrastructure Network Architecture)对比显示了DMCH在能耗及可扩展性等方面的优越性.

A Novel Framework for Large Scale Wireless Sensor Networks and the Analysis of Architecture and Energy Dissipation

Large scale sensor networks require scalable framework and robust energy-efficient communication protocols.. In this paper,a novel framework for large scale sensor networks DMCH (Directed Multi-Hop Clustering Hierarchy) which networks sensor nodes in a clustering hierarchical way,as well as its protocol architecture is proposed. The key characteristic of DMCH is the deployment of MBS (Mini Base Station) which is superior to the ordinary nodes in terms of energy and computing ability,etc. The MBS' are de- ployed uniformly in the whole area of interest and designated as cluster heads. In order to balance the energy dissipation of nodes,MBS' are designated as cluster heads in turn over time. Network framework along with energy dissipation is analyzed according to the mathe- matical model and simulation results. Moreover,the simulation of DMCH and another typical protocol for large scale sensor network MI- NA (Multi-Hop Infrastructure Network Architecture) indicates the advantages of DMCH in terms of energy consumption and scalability,