UAV-Assisted Data Collection for Ocean Monitoring Networks
UAV-Assisted Data Collection for Ocean Monitoring Networks
复制标题
无人机辅助海洋监测网络数据采集
DOI：
10.1109/mnet.011.2000168
复制
发表时间：
2020-11-01
期刊：
影响因子：
9.3
通讯作者：
Qin, Zhiliang
中科院分区：
文献类型：
--
作者：
Ma, Ruofei;Wang, Ruisong;Qin, Zhiliang
海洋监测网络（OMN）是集通信和网络技术于一体的远程海洋数据采集系统。由于水声通信已广泛用于电池供电的水下传感器节点（USN）和汇聚节点（SN）之间的数据传输，海洋数据收集系统需要节能部署以延长整个网络的寿命。这项工作旨在提出一种无人机辅助的 OMN 架构，其中在每个数据收集周期中，首先使用水声通信将传感数据从 USN 传输到海面 SN，然后悬停在 SN 上方的无人机收集所有数据，并通过无线通信链路将所有数据转发到地面基站。为了延长网络寿命，我们将 SN 和无人机部署和资源分配建模为混合整数非凸优化问题。为了以启发式的方式有效地解决该问题，我们借助时分USN到SN接入和基于NOMA的SN到UAV接入方案，设计了SN部署方案。计算机模拟验证了所提出的部署和接入方案对 OMN 生命周期性能的优越性。特别是，增加USN到SN接入过程中的时隙数量可以显着提高性能。
Ocean monitoring network (OMN) is a remote oceanic data collection system, which integrates communication and networking technologies. As underwater acoustic communication has been widely used for data transmission between battery- powered underwater sensor nodes (USNs) and sink nodes (SNs), an oceanic data collection system requires energy efficient deployment to prolong the lifetime of the whole network. This work aims to propose an unmanned aerial vehicle (UAV) assisted OMN architecture, in which sensing data are transmitted first from USNs to sea surface SNs in each data collection cycle using underwater acoustic communication, and then a UAV hovering above the SNs collects and relays all the data to a ground base station via wireless communication links. To extend the network lifetime, we model SNs and UAV deployment and resource allocation as a mixed integer non-convex optimization problem. To solve the problem efficiently in a heuristic way, we design a SNs deployment scheme with the help of time division USN-to-SN access and NOMA based SN-to-UAV access schemes. Computer simulations validate the superiority of the proposed deployment and access schemes on OMN lifetime performance. in particular, increasing the number of time slots in the USN-to-SN access process can improve the performance significantly.