一种能量有效的基于虚拟骨干网的WSN范围选择再编程协议

摘要

提出了一种能量有效的具有范围选择的网络再编程协议.该协议首先根据要更新的应用程序、节点的剩余能量、有效度数和节点间的链路质量,选出合适的核心节点,创建虚拟骨干网.然后分两个阶段实现数据传输.在第一阶段软件影像由Sink节点通过流水线的方式,先传输给核心节点；在第二阶段由核心节点并行传输到需要的普通节点.有效地减少了参与再编程的节点数,节省了能量,实现了范围选择.另外,引进协调的睡眠机制,进一步降低节点的能量消耗.性能分析与仿真实验表明:与协议ThreeStages和Aqueduct相比,本协议节省了大约5.6％～24.8％的平均延时和5.1％ ～27.7％的能量消耗.%This paper proposes an energy-efficient reprogramming protocol with selection of scope.Firstly,based on the application that needs to be updated,node's residual energy,effective degree and link quality,this protocol selects a subset of the nodes in the network as core nodes to create a virtual backbone.Then in order to disseminate data,it employs a two phase approach,in which the software image is delivered to the core nodes by pipeline in the first phase,and to the needed ordinary nodes parallelly in the second phase,reduces the number of nodes involved in the reprogramming efficiently,saves energy and achieves the selection of scope.And in addition to further reducing energy consumption,a coordinated sleep schedule is introduced.The performance analysis and simulation experiment indicate that,the average delay and energy consumption in this protocol drops 5.6％ ～24.8％ and 5.1％ ～27.7％ approximately compared with ThreeStages and Aqueduct.