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Sensors 2015, 15(12), 30964-30980; doi:10.3390/s151229844

Impact of Heterogeneity and Secrecy on theCapacity of Wireless Sensor Networks

1
School of Electronic Information and Communications, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
2
Nanchang of Jiangxi University of Science and Technology, 1180 Shuanggang Road, Nanchang 330013, China
3
China Yangtze Power Co., Ltd., 1 Xibajianshe Road, Yichang 443002, China
*
Author to whom correspondence should be addressed.
Academic Editor: Rongxing Lu
Received: 23 September 2015 / Revised: 25 November 2015 / Accepted: 30 November 2015 / Published: 10 December 2015
(This article belongs to the Special Issue Security and Privacy in Sensor Networks)
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Abstract

This paper investigates the achievable secrecy throughput of an inhomogeneous wireless sensor network. We consider the impact of topology heterogeneity and the secrecy constraint on the throughput. For the topology heterogeneity, by virtue of percolation theory, a set of connected highways and information pipelines is established; while for the secrecy constraint, the concept of secrecy zone is adopted to ensure secrecy transmission. The secrecy zone means there is no eavesdropper around the legitimate node. The results demonstrate that, if the eavesdropper’s intensity is λe= o log n - 3 δ - 4 δ - 2 , a per-node secrecy rate of Ω 1 n 1 - v ( 1 - v ) log n can be achieved on the highways, where δ is the exponent of heterogeneity, n and n v represent the number of nodes and clusters in the network, respectively. It is also shown that, with the density of the eavesdropper λ e = o log n Φ ̲ - 2 , the per-node secrecy rate of Ω Φ ̲ n can be obtained in the information pipelines, where Φ ̲ denotes the minimum node density in the network. View Full-Text
Keywords: secrecy throughput; percolation; heterogeneous topology; wireless sensor networks secrecy throughput; percolation; heterogeneous topology; wireless sensor networks
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Liu, Q.; Yu, L.; Liu, Z.; Zheng, J. Impact of Heterogeneity and Secrecy on theCapacity of Wireless Sensor Networks. Sensors 2015, 15, 30964-30980.

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