Throughput of the Magnetic Induction Based Wireless Underground Sensor Networks: Key Optimization Techniques
Throughput of the Magnetic Induction Based Wireless Underground Sensor Networks: Key Optimization Techniques
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DOI：
10.1109/tcomm.2014.2367030
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发表时间：
2014-12-01
影响因子：
8.3
通讯作者：
Gerstacker, Wolfgang H.
中科院分区：
文献类型：
--
作者：
Kisseleff, Steven;Akyildiz, Ian F.;Gerstacker, Wolfgang H.
无线井下传感器网络(WUSN)提出了各种新的研究挑战。最近，人们提出了一种磁感应(MI)波导技术，以应对WUSN中非常苛刻的传播条件。这种基于中继器的方法允许扩展传输范围，如果不部署中继器，则传输范围可能非常有限。本文研究了基于树形结构的无线传感器网络。我们工作的目标是确定最优的系统参数、拓扑和部署策略，以避免系统中的瓶颈，实现最优的网络吞吐量。我们比较了两种不同的部署方案：MI波导和基于传感器之间的直接MI传输(不部署中继)的连接。这两种方案在性质和传播特性上是不同的。因此，采用了不同的优化技术。选择最优的系统参数集以最大化最差链路的信道容量，从而优化可用数据速率。然后，可以将基于直接MI传输的网络的瓶颈吞吐量与基于MI波导的网络的相应结果进行比较。在几种情况下，我们观察到基于直接MI传输的网络具有更好的性能。
Wireless underground sensor networks (WUSNs) present a variety of new research challenges. Recently, a magnetoinductive (MI) waveguide technique has been proposed to cope with the very harsh propagation conditions in WUSNs. This relay-based approach allows for an extension of the transmission range, which can be quite limited if relays are not deployed. In this paper, tree-based WUSNs are considered. The objective of our work is to determine the optimal system parameters, topology, and deployment strategy in order to avoid bottlenecks in the system and achieve optimal network throughput. We compare two different deployment schemes: MI waveguides and direct MI transmission (no relays deployed) based connections between sensors. The two schemes are different in nature and propagation characteristics. Therefore, different optimization techniques are utilized. The optimal set of system parameters is chosen to maximize the channel capacity of the worst link and therefore optimize the available data rate. The bottleneck throughput of the direct MI transmission based network can be then compared with the respective results of the MI waveguides based network. In several cases, we observe a better performance of the direct MI transmission based networks.