On the reliability of backbone-assisted end-to-end transmissions in WSNs

2009 First International Conference on Ubiquitous and Future Networks Pub Date : 2009-06-07 DOI:10.1109/ICUFN.2009.5174278

Ali Tufail, S. A. Khayam, Amna Ali, W. A. Baig, F. Anwar, Ki-Hyung Kim, S. Yoo

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引用次数: 3

Abstract

Many anticipated deployment scenarios, in particular military, healthcare, and disaster-recovery applications, of Wireless Sensor Networks (WSNs) require reliable source to sink communication. Since transmission range of sensors is quite limited, to achieve higher end-to-end transmission reliability, WSNs generally employ intermediate backbone links (wired or wireless) that can deliver packets at larger distances. In this paper, we evaluate the reliability of backbone-assisted routing and dissemination in WSNs. In particular, we use reliability theory to investigate two important problems: a) if sensor node to backbone/gateway node ratio is fixed in a unit area, what is the maximum achievable reliability? b) How many wired hops or gateway nodes are required to achieve a given reliability? Finally we analyze the cost and benefit incurred by adding gateway nodes to a backbone-assisted WSN and observe that after a certain threshold adding more backbone nodes to the WSN provides negligible improvement in the overall end-to-end reliability.

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无线传感器网络中骨干网辅助端到端传输的可靠性研究

无线传感器网络(wsn)的许多预期部署场景，特别是军事、医疗保健和灾难恢复应用，都需要可靠的通信源。由于传感器的传输范围非常有限，为了实现更高的端到端传输可靠性，wsn通常采用中间骨干链路(有线或无线)，可以在更远的距离上传输数据包。在本文中，我们评估了无线传感器网络中主干网辅助路由和传播的可靠性。特别地，我们使用可靠性理论研究了两个重要问题:a)如果在单位面积内传感器节点与骨干/网关节点的比例是固定的，那么可实现的最大可靠性是多少?b)需要多少有线跳数或网关节点才能达到给定的可靠性?最后，我们分析了在骨干辅助WSN中增加网关节点所带来的成本和收益，并观察到在一定阈值之后，在WSN中增加更多骨干节点对整体端到端可靠性的改善可以忽略不计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 First International Conference on Ubiquitous and Future Networks

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