A mobile sink-integrated framework for the collection of farmland wireless sensor network information based on a virtual potential field
文献类型： 外文期刊
第一作者： Yang, Ying
作者： Yang, Ying;Yang, Wude;Yang, Ying;Wu, Huarui;Miao, Yisheng;Wu, Huarui;Miao, Yisheng
作者机构：
关键词： Farmland wireless sensor networks; mobile sink; path planning; network lifetime; energy efficiency; wireless sensor network transmission strategy
期刊名称：INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS （ 影响因子：1.64； 五年影响因子：1.476 ）
ISSN： 1550-1477
年卷期： 2021 年 17 卷 7 期
页码：
收录情况： SCI
摘要： To overcome the limitations of traditional data collection methods in large-scale farmland wireless sensor network, in this study, we introduce a mobile sink and propose a virtual potential field-based strategy for mobile sink path planning. Virtual potential field-based strategy constructs a virtual field based on the residual energy, data generation rate, location information and cache urgency of nodes in the monitoring area. The stronger the virtual field, the more attractive it will be to mobile sink, which consequently affects the mobile path of sink node. Rendezvous points are selected in accordance with the maximum-farthest criterion, and the shortest path connecting all rendezvous points is taken as the mobile path of sink. Furthermore, the monitoring nodes employ the distance probability transmission strategy to have the transmission moment selected and the energy consumption optimized with reference to the path control information sent by the sink. The virtual potential fields and the rendezvous points are recalculated periodically according to the dynamic changes of both the node residual energy and the real-time cache. The simulation results showed that excellent transmission efficiency and network lifetime, and the combination of virtual potential field-based strategy and distance probability transmission strategy can have the fairness and real time of nodes guaranteed, thus it may meet the needs of large-scale farmland data collection.
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