基于平滑预测LQI的WSN动态功率控制研究  

WSN Dynamic Power Control Based on Smooth Forecast LQI

作　　者：朱明[1] 金仁成[1] 车志平[1] 李应琛 

机构地区：[1]大连理工大学辽宁省微纳米技术及系统工程重点实验室,大连116024

出　　处：《单片机与嵌入式系统应用》2015年第8期26-29,共4页Microcontrollers & Embedded Systems

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB320300);国家"十二五"科技支撑计划资助项目(2011BAG05B02)

摘　　要：针对当前WSN功率控制算法运算量大、需精确定位且不适用移动网络等问题,提出了一种基于链路质量指示(Link Quality Indication,LQI)的动态功率控制方案。接收节点根据LQI及发送节点的发送功率来计算发送节点的最优发送功率,并采用三次指数平滑算法对LQI进行平滑预测,改善了LQI波动较大的缺陷。Matlab在线建模仿真证明了功率控制策略的正确性,并利用库仑计对JN5148节点的动态功率控制方案进行测试,实验结果表明,网络功耗降低了15.3%。To solve power control algorithm＇s drawbacks of a large amount of computation, high precision positioning and non-applicabili ty for mobile network, the scheme of dynamic power control based on link quality indication （LQI） is proposed. The receiving node calculates the optimal power level of the sending node according to LQI and transmission power. Three exponential smoothing is used to forecast LQI which improves the drawback of LQI fluctuation. Matlab simulation based on oMine modeling proves the validity of the power control strategy. The experiment platform based on JN5148 tests the scheme of dynamic power control with coulometer,and the results show that the network power is reduced by 15.3 %.

关 键 词：无线传感器网络 动态功率控制 链路质量指示 指数平滑算法 JN5148 

分 类 号：TN929.5[电子电信—通信与信息系统] TP212.9[电子电信—信息与通信工程]