基于概率母函数的无线传感器网络功率控制研究  

Power Control in WSNs Based on Probability Generating Function

作　　者：张顺淼[1,2] 黄德根[1] 

机构地区：[1]大连理工大学电子信息与电气工程学部,辽宁大连116024 [2]福建工程学院信息科学与工程学院,福州350118

出　　处：《小型微型计算机系统》2015年第4期739-743,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61173100)资助;福建省中青年教师教育科研项目(JA14217)资助

摘　　要：无线传感器网络中,节点功率调节越大,网络连通性和抗毁性就越好,但是能耗也越大.为此,尝试找到抗毁性与能耗的折中点,既保证基本的抗毁性,又达到节能的目的.在分簇网络拓扑结构基础上,提出了一种基于概率母函数的功率控制算法,通过功率控制使之达到网络崩溃的临界点,以此与网络抗毁性达到很好的折中.仿真实验结果表明,该方法能找到此折中临界值,在节点数量较大情况下,该方法较使用加大固定功率的情况节省近50%的能耗.In a wireless sensor network （WSN）, the greater the node power regulate, the better the connectivity is, so the anti-destro- ying ability will be stronger automatically. However, the energy consumption is enormous. This article aims to find a balanced point between anti-destroying ability and energy consumption,which not only guarantees the basic anti-destroying ability, but also saves en- ergy. Therefore, based on the clustering of the network topology,in the premise of ensuring the network＇s basic anti-destroying ability, this paper proposes a power control algorithm based on probability generating function, which is formed by controlling the power to the critical point of network collapsing to get a better compromise with network anti-destroying ability. Simulation results show that the scheme can find the critical value. In the case of larger node numbers, this scheme can save 50% of energy consumption compared with enlarging the fixed power.

关 键 词：无线传感器网络 功率控制 概率母函数 临界点 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]