智能系统学报2012，Vol.7Issue(3)：265-270,6.DOI:10.3969/j.issn.1673-4785.201110002
一种能量有效的无线传感器网络轮询接入控制协议
An energy-efficiency polling access control protocol for wireless sensor networks
摘要
Abstract
Although the energy waste is well controlled on the medium access control (MAC) layer under the periodic sleeping point coordination function (PCF) scheme in wireless sensor networks ( WSN) , the system performance declined and the system query energy cost increased because the node loads were ignored. Based on the limited service (K = 1) , an improved PCF polling control protocol, which is known as the point coordination function by the site status (PCF-SS) for WSN, was proposed. The priority of a node was variable by its status and the service K was correspondingly changed using this protocol. Therefore, the service time of the next turn could be assigned dynamically according to its status when the AP server came to service a node. Also, the nodes were awakened by a uniform service time table which was used to save their power. The experimental results indicate that the performances , such as the mean value of queue length and message waiting time, are better than when using the periodic sleeping PCF scheme. The energy usage is more efficient and the lifecycle is longer, making it suitable for the MAC protocol of WSN.关键词
无线传感器网络/PCF/能量有效/轮询服务/接入控制/轮询接入控制Key words
wireless sensor networks (WSN) / point coordination function (PCF) / energy efficiency/ polling service / access control/ polling access contrail分类
信息技术与安全科学引用本文复制引用
何敏,赵东风,保利勇,左朝树..一种能量有效的无线传感器网络轮询接入控制协议[J].智能系统学报,2012,7(3):265-270,6.基金项目
国家自然科学基金资助项目(61072079) （61072079）
云南省教育厅科学研究基金资助项目 (09y0042). （09y0042）
