无线传感器网络中基于能量效率的分布式MAC协议  

Energy-Aware Distributed MAC Protocol in Wireless Sensor Networks

作　　者：崔海霞[1,2] 黎文楼[1] 丁志文[1] 

机构地区：[1]广州大学物理与电子工程学院,广州510006 [2]华南理工大学电子与信息学院,广州510640

出　　处：《传感技术学报》2010年第1期104-109,共6页Chinese Journal of Sensors and Actuators

基　　金：国家863高技术发展计划资助(2007AA01Z210)

摘　　要：针对无线传感器网络中能量效率与频谱资源利用率的问题,提出了一种分布式媒介接入控制(MAC)算法。通过分析基于节约能量消耗的SMAC(Sensor-MAC)协议,结合现有的一些协议的改进方法,利用功率控制技术有效降低了更多的能量消耗。同时通过选择与维护邻居调度表的方式,提升了网络的有效链接并降低了碰撞率。节点采用在侦听与睡眠之间相互切换,在侦听期间以最优发送功率发送控制与数据信息,降低了干扰范围。数值计算与实验仿真结果显示,算法可以有效地改善网络性能,节省网络能量消耗,提升网络的有效吞吐量。For energy efficiency and frequency spectrum resource utilized efficiency in sensor networks,a distributed medium access control（MAC）algorithm is proposed.We analyze the energy-efficient MAC protocols for wireless sensor networks and more energy consumption is decreased with power control based on the current improved methods.By choosing and maintaining schedule tables in the network,the probability of collision is reduced,and the effective connections within the network are increased.Nodes take interception switch alternatively between sleeping and listening period and adopt the optimal transmission power sending control or data messages in listen period.This method reduces the interfering range.Numerical calculations and simulation results show that our proposed algorithm provides better total network performance,the energy consumed is lower,and the effective throughput is improved.

关 键 词：MAC 功率控制 调度表 能耗 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]