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太阳能无线传感器网络节点传输功率策略优化
姚晗,姚彦鑫
0
(北京信息科技大学 信息与通信工程学院,北京100085)
摘要:
针对配备太阳能采集设备的无线传感器网络节点,以如何合理使用采集到的能量使得时间期限内点对点传输的数据量最大为优化目的,结合必要的约束条件(能量获取电池只有有限的能量存储能力以及能量因果关系),建立了数据传输的能量通道优化模型,通过能量通道策略优化算法得到了最优传输功率策略。与当前普遍使用的能量即到即用方法进行了性能对比,仿真发现系统累积传输了更多的数据量,性能提升明显。在此基础上,考虑了实际太阳能获取量与预测值的偏差,提出了改进的能量通道算法,使得其更加适应于实际场景中。
关键词:  无线传感器网络  能量获取  数据传输  传输功率  最优策略
DOI:
基金项目:北京市自然科学基金资助项目(4172021,Z160002);北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD201704064); 北京市教育委员会科技发展计划面上项目(KM201711232010);北京信息科技大学科技创新服务能力建设项目资助(71F1810921)
Transmission power strategy optimization of solar wireless sensor network node
YAO Han,YAO Yanxin
(School of Information and Communication Engineering,Beijing Information Science and Technology University,Beijing 100085,China)
Abstract:
For the wireless sensor network(WSN) node equipped with solar energy collection equipment,this paper focuses on how to use the collected energy reasonably to maximize the amount of data transmitted from point to point within the time limit,and combines the necessary constraint that the energy acquisition battery has limited energy storage capacity and energy causality,establishes energy channel optimization model for data transmission.The optimal transmission power strategy is obtained by the energy channel strategy optimization algorithm.Compared with the currently used energy harvest-use method,the proposed method is found to make the system accumulate more data,and performance improvement is obvious.On this basis,in consideration of the deviation between the actual solar energy harvest and the predicted value,an improved energy channel algorithm is proposed,which makes it more suitable for actual scenes.
Key words:  wireless sensor network(WSN)  energy acquisition  data transmission  transmitted power  optimal strategy
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