WSN中一种基于网格的并行数据收集方案  

A GRID-BASED PARALLEL DATA COLLECTION SCHEME IN WIRELESS SENSOR NETWORKS

作　　者：刘小强[1] 廖建锋[2] 

机构地区：[1]三门峡职业技术学院信息工程系,河南三门峡472000 [2]河南经贸职业学院信息管理系,河南郑州450046

出　　处：《计算机应用与软件》2014年第7期127-131,共5页Computer Applications and Software

摘　　要：数据收集问题是无线传感器网络中的研究热点之一。数据收集方式会影响数据到达sink的准确度、延迟以及网络的能量消耗。针对时间响应和数据准确度要求高的应用,提出一种基于网格的并行数据收集方案(DGSG)。首先,sink利用已知的全局信息和计算能力构建出基于最小度的数据收集森林进行任务分发,得到网格粒度最优的数据收集策略,然后网格内的普通节点通过时隙分配来进行数据收集,并可以根据自身的局部信息动态调整数据收集路径。仿真实验表明,相对于已有的方法,DGSG在保证网络生命周期的前提下,能够有效降低延迟以及提高数据收集的准确率。Data collection issue is one of the research focuses in wireless sensor networks. The way of data collection will affect the accuracy of data reaching the sink, the delay and the energy consumption of the network. Aiming at the applications with high time-response and data accuracy demand, we propose a grid-based parallel data collection scheme DGSG. First, the sink builds the minimum degree-based data collection forest by using the known global information and computing power to distribute the task, and obtains the data collection strategy with optimal grid granularity; then the ordinary nodes in grid are allocated through time slots to gather the data, and they can dynamically adjust the data collection path according to their own local information. Simulation experimental results show that DGSG can effectively reduce the delay and improve the accuracy of data collection under the premise of ensuring the lifecycle of network.

关 键 词：无线传感器网络 数据收集 网格 路径 延迟 网络生命周期 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]