一种基于IEEE 802.11 PSM的增强节能机制  

Enhanced Power Saving Scheme for IEEE 802.11 PSM

作　　者：伏飞[1] 刘晶[1] 齐望东[1] 沈洋[1] 

机构地区：[1]解放军理工大学指挥自动化学院,南京210007

出　　处：《电子科技大学学报》2006年第6期883-886,共4页Journal of University of Electronic Science and Technology of China

摘　　要：分析了IEEE802.11分布式协调功能的能量节省机制,针对其采用一种固定信号时隙的局限性,提出了一种自适应节能机制。新机制采用三种信号时隙,由节点根据自己的数据流量动态选择其中一种。仿真结果表明,此机制在保持较高的吞吐量的同时,不仅大幅地提高了能量利用率,还明显地降低了时延。Power management is an important technique to prolong the lifetime of battery-powered wireless Ad Hoe networks. This paper analyzes the Power Saving Mechanism （PSM） of IEEE 802.11 Distributed Coordination Function （DCF） and presents a self-adaptive power saving mechanism, which consists of three different beacon intervals. In the new scheme the node selects one of the three beacon intervals dynamically, depending on its traffic. Simulation results show that the new scheme not only improves the efficiency of energy greatly but also achieves desirable transmission delay and throughput.

关 键 词：IEEE 802.11节能机制 AD HOC网络 信号时隙 能量利用率 

分 类 号：TN925.93[电子电信—通信与信息系统]