| 引用本文: | 刘丽萍,安新升,张强,石高涛.太阳能无线传感器网络节点传输功率优化策略[J].哈尔滨工业大学学报,2015,47(9):36.DOI:10.11918/j.issn.0367-6234.2015.09.007 |
| LIU Liping,AN Xinsheng,ZHANG Qiang,SHI Gaotao.Optimal transmission power scheduling on solar wireless sensor networks node[J].Journal of Harbin Institute of Technology,2015,47(9):36.DOI:10.11918/j.issn.0367-6234.2015.09.007 |
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| 摘要: |
| 针对最大化节点能量收集时间内的数据传输量问题,考虑太阳能驱动的无线传感器网络节点的能量收集特性,在数据已经到达的假设下,设计了环境能量驱动节点的前向-后向搜索(FBS)传输功率优化策略. 该策略依据节点收集能量下降段平均值的判断,给出全局优化的各时刻节点的传输功率. 最后以1990年美国洛杉矶(N33°,W118°)的光照辐射数据为依据,对算法进行了仿真分析. 结果表明：前向-后向搜索传输功率优化策略在传输的数据量上优于能量即到即用(EUP)的传输方式；节点收集能量的时间越长,算法的优化效果越好. |
| 关键词: 太阳能驱动 无线传感器网络节点 传输功率 数据传输 优化策略 |
| DOI：10.11918/j.issn.0367-6234.2015.09.007 |
| 分类号:TP393 |
| 基金项目:国家自然科学基金(61104208)；天津市应用基础与前沿技术研究计划 (13JCQNJC0,2JCQNJC00200). |
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| Optimal transmission power scheduling on solar wireless sensor networks node |
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LIU Liping1,AN Xinsheng1,ZHANG Qiang1,SHI Gaotao2
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(1.School of Electrical Engineering and Automation, Tianjin University, 300072 Tianjin, China; 2.School of Computer Science and Technology, Tianjin University, 300072 Tianjin, China)
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| Abstract: |
| Considering the energy harvesting properties of solar-driven wireless sensor network node, an optimal transmission power scheduling policy was proposed aiming at maximizing data bits delivered by a deadline. Assuming data bits have arrived, the proposed forward-backward searching (FBS) transmission power policy established an optimal transmission power series. According to the average harvested energy estimate during the harvesting decreasing period, the method can provide a global optimal transmitting series. Simulation was made based on the solar radiation data of Los Angeles(N33°,W118°), America in 1990. The results show that FBS performs better than the energy used up(EUP) policy. The longer sensor node harvestes energy , the better FBS performs. |
| Key words: solar-driven wireless sensor network node transmission power data delivering optimization strategy |
