Impact of Heterogeneity and Secrecy on theCapacity of Wireless Sensor Networks

Sensors

Zuhao Liu¹  Li Yu²  Qiuming Liu²  Jun Zheng² 

[1] China Yangtze Power Co., Ltd., 1 Xibajianshe Road, Yichang 443002, China;School of Electronic Information and Communications, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China;

关键词: secrecy throughput;    percolation;    heterogeneous topology;    wireless sensor networks;   

DOI  :  10.3390/s151229844

来源: DOAJ

【 摘 要 】

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= olog n - 3 δ - 4 δ - 2, a per-node secrecy rate ofΩ 1n1 - v( 1 - v )log ncan be achieved on the highways, where δ is the exponent of heterogeneity, n andn vrepresent the number of nodes and clusters in the network, respectively. It is also shown that, with the density of the eavesdropper λ e= olognΦ ̲ - 2, the per-node secrecy rate ofΩ Φ ̲n can be obtained in the information pipelines, whereΦ ̲denotes the minimum node density in the network.

【 授权许可】

Unknown