A Tractable Approach to Analyzing the Physical-Layer Security in K-Tier Heterogeneous Cellular Networks

This study proposes a tractable approach to analyze the physical-layer security in the downlink of a multi-tier heterogeneous cellular network. This method is based on stochastic geometry, has low computational complexity, and uses the two-dimensional Poisson point process to model the locations of...

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Bibliographic Details
Published in:China communications 2015-12, Vol.12 (S1), p.166-173
Main Authors: Zhong, Zhihao, Peng, Janhua, Luo, Wenyu, Huang, Kaizhi
Format: Article
Language:English
Subjects:
cellular
coverage
Downlink
geometry
secrecy
heterogeneous
heterogeneous cellular networks
Interference
layer
Mobile communication
networks
physical
Numerical models
physical layer security
probability
secrecy coverage probability
Security
security
stochastic
stochastic geometry
Stochastic processes
Wireless communication
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Summary:This study proposes a tractable approach to analyze the physical-layer security in the downlink of a multi-tier heterogeneous cellular network. This method is based on stochastic geometry, has low computational complexity, and uses the two-dimensional Poisson point process to model the locations of K-tier base stations and receivers, including those of legitimate users and eavesdroppers. Then, the achievable secrecy rates for an arbitrary user are determined and the upper and lower bounds of secrecy coverage probability derived on the condition that cross-tier interference is the main contributor to aggregate interference. Finally, our analysis results reveal the innate connections between information-theoretic security and the spatial densities of legitimate and malicious nodes.
ISSN:1673-5447
DOI:10.1109/CC.2015.7386165