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arXiv 1005.3073cs.NI
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分层与非分层三维水下无线传感器网络

Hierarchical and Nonhierarchical Three-Dimensional Underwater Wireless Sensor Networks

S. M. Nazrul Alam, Zygmunt Haas

摘要:

在一些水下传感器网络中,传感器节点可以部署在海洋的不同深度,使这些网络成为三维(3D)网络。虽然大多数陆地传感器网络通常可以建模为二维的(2D)网络,但这些水下传感器网络必须建模为3D网络。这导致了网络体系结构和拓扑结构领域的新的研究挑战。在本文中,我们提出了两种不同的网络结构的三维水下传感器网络。第一种是分层架构,它使用相对少量的鲁棒骨干节点来创建网络,其中大量廉价的传感器与它们最近的骨干节点通信,并且从骨干节点到汇点的数据包通过其他骨干节点路由。这种分层的方法允许创建一个网络的数量较少的昂贵的骨干节点,同时保持移动传感器简单和廉价。随着网络拓扑结构,我们还研究了这种3D网络的能源效率和频率复用问题。第二种方法是一个非层次化的架构,它假设所有的节点都是相同的,随机部署。它将整个3D网络空间划分为相同的单元,并在每个单元中保持一个节点活动,从而在限制能量消耗的同时保持感知覆盖和连接。我们还研究了我们所提出的计划接近最优。

英文摘要:

In some underwater sensor networks, sensor nodes may be deployed at various depths of an ocean making those networks three-dimensional (3D). While most terrestrial sensor networks can usually be modeled as two dimensional (2D) networks, these underwater sensor networks must be modeled as 3D networks. This leads to new research challenges in the area of network architecture and topology. In this paper, we present two different network architectures for 3D underwater sensor networks. The first one is a hierarchical architecture that uses a relatively small number of robust backbone nodes to create the network where a large number of inexpensive sensors communicate with their nearest backbone nodes, and packets from a backbone node to the sink is routed through other backbone nodes. This hierarchical approach allows creating a network of smaller number of expensive backbone nodes while keeping the mobile sensors simple and inexpensive. Along with network topology, we also study energy efficiency and frequency reuse issues for such 3D networks. The second approach is a nonhierarchical architecture which assumes that all nodes are identical and randomly deployed. It partitions the whole 3D network space into identical cells and keeps one node active in each cell such that sensing coverage and connectivity are maintained while limiting the energy consumed. We also study closeness to optimality of our proposed scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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