基于非均匀数据率的无线传感器网络平衡耗能算法  

A Protocol Base on Non-uniform Data Generating Rate for Balancing Energy Consumption in Wireless Sensor Networks

作　　者：王建文[1] 邹昌伟[1] 

机构地区：[1]福建师范大学软件学院,福建福州350108

出　　处：《福建师范大学学报（自然科学版）》2010年第2期47-51,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省教育厅资助项目(JB05317;JB09053)

摘　　要：无线传感器网络采用多跳、多对一的数据传输方式,使得网络能量消耗不平衡,基站附近结点通信负荷过重成为"热点","热点"区域的结点往往最先死亡导致网络失效,此时其余结点仍剩余大量能量.为平衡网络的能量消耗,提出了一种基于非均匀数据率的无线传感器路由协议,其核心思想是结点根据结点与基站的距离调整数据率(单位时间内结点产生数据的速率,简称数据率),距离基站越近数据率越低,以节省能量用于通信,距离基站越远数据率越高,以充分利用节点的能量.In multi-hop wireless sensor networks characterized by many-to-one traffic patterns, problems related to energy imbalance among sensors often appear. The nodes closer to the base station are burdened with heavy relay traffic and tend to die early, causing network partition. To balance the energy consumption among nodes and extend the network lifetime, a novel data transmission mechanism based on unequal data generating rate is presented. Nodes generate data adaptive to the distance from base station. Nodes closer to the base station generate fewer amounts of data than those farther away from the base station. Thus nodes closer to the base station can preserve some energy for relaying data.

关 键 词：无线传感器网络 非均匀数据率 路由协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]