作者： Xu Ding; Lei Shi; Jianghong Han; Jingting Lu

发表刊物：Sensors

年份：January 2016

摘要： Wireless sensor networks deployed in coal mines could help companies provide workers working in coal mines with more qualified working conditions. With the underground information collected by sensor nodes at hand, the underground working conditions could be evaluated more precisely. However, sensor nodes may tend to malfunction due to their limited energy supply. In this paper, we study the cross-layer optimization problem for wireless rechargeable sensor networks implemented in coal mines, of which the energy could be replenished through the newly-brewed wireless energy transfer technique. The main results of this article are two-fold: firstly, we obtain the optimal relay nodes’ placement according to the minimum overall energy consumption criterion through the Lagrange dual problem and KKT conditions; secondly, the optimal strategies for recharging locomotives and wireless sensor networks are acquired by solving a cross-layer optimization problem. The cyclic nature of these strategies is also manifested through simulations in this paper.

参考文献拷贝字段：Xu Ding, Lei Shi, Jianghong Han, Jingting Lu. The Study of Cross-layer Optimization for Wireless Rechargeable Sensor Networks Implemented in Coal Mines. Sensors, 2016, 16, 171.