Secure and Energy-Efficient Transmissions in Cache-Enabled Heterogeneous Cellular Networks: Performance Analysis and Optimization

Zheng, Tong-Xing; Wang, Huiming; Yuan, Jinhong

doi:10.1109/tcomm.2018.2873359

Cited by 36 publications

(25 citation statements)

References 43 publications

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“…Herein, the secrecy throughput denotes the amount of successfully delivered secret information subject to certain reliability and secrecy constraints. In fact, the secrecy throughput has extensively been taken as an optimization objective for the design of secure transmissions in slow fading channels in the context of infinite blocklength [21]- [25]. Nevertheless, to optimize the secrecy throughput under the constraint of finite blocklength is difficult, and the results derived for infinite blocklength, e.g., [21]- [25], cannot be directly applied.…”

Section: A Previous Work and Motivationsmentioning

confidence: 99%

“…In fact, the secrecy throughput has extensively been taken as an optimization objective for the design of secure transmissions in slow fading channels in the context of infinite blocklength [21]- [25]. Nevertheless, to optimize the secrecy throughput under the constraint of finite blocklength is difficult, and the results derived for infinite blocklength, e.g., [21]- [25], cannot be directly applied. Indeed, the blocklength itself is an optimization variable, and it couples with other variables in a sophisticated manner which makes the optimization problem intractable.…”

Section: A Previous Work and Motivationsmentioning

confidence: 99%

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Physical-Layer Security in the Finite Blocklength Regime Over Fading Channels

Zheng

Wang

et al. 2020

IEEE Trans. Wireless Commun.

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This paper studies physical-layer secure transmissions from a transmitter to a legitimate receiver against an eavesdropper over slow fading channels, taking into account the impact of finite blocklength secrecy coding. A comprehensive analysis and optimization framework is established to investigate secrecy throughput for both single-and multiantenna transmitter scenarios. Both adaptive and non-adaptive design schemes are devised, in which the secrecy throughput is maximized by exploiting the instantaneous and statistical channel state information of the legitimate receiver, respectively. Specifically, optimal transmission policy, blocklength, and code rates are jointly designed to maximize the secrecy throughput. Additionally, null-space artificial noise is employed to improve the secrecy throughput for the multi-antenna setup with the optimal power allocation derived. Various important insights are developed. In particular, 1) increasing blocklength benefits both reliability and secrecy under the proposed transmission policy; 2) secrecy throughput monotonically increases with blocklength; 3) secrecy throughput initially increases but then decreases as secrecy rate increases, and the optimal secrecy rate maximizing the secrecy throughput should be carefully chosen in order to strike a good balance between rate and decoding correctness. Numerical results are eventually presented to verify theoretical findings.

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Section: A Previous Work and Motivationsmentioning

confidence: 99%

Section: A Previous Work and Motivationsmentioning

confidence: 99%

Physical-Layer Security in the Finite Blocklength Regime Over Fading Channels

Zheng

Wang

et al. 2020

IEEE Trans. Wireless Commun.

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“…Content caching and distribution in presence of eavesdroppers is investigated in [190], [191]. Zheng et al [190] maximized both secrecy energy efficiency and throughput considering content diversity and popularity. Xiang et al [191] explored multiple-input-multiple-output content transport and scalable encoding of videos.…”

Section: Trade-off Analysis In Green Caching Systemsmentioning

confidence: 99%

A Review on Green Caching Strategies for Next Generation Communication Networks

et al. 2020

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In recent years, the ever-increasing demand for networking resources and energy, fueled by the unprecedented upsurge in Internet traffic, has been a cause for concern for many service providers. Content caching, which serves user requests locally, is deemed to be an enabling technology in addressing the challenges offered by the phenomenal growth in Internet traffic. Conventionally, content caching is considered as a viable solution to alleviate the backhaul pressure. However, recently, many studies have reported energy cost reductions contributed by content caching in cache-equipped networks. The hypothesis is that caching shortens content delivery distance and eventually achieves significant reduction in transmission energy consumption. This has motivated us to conduct this study and in this article, a comprehensive survey of the state-of-the-art green caching techniques is provided. This review paper extensively discusses contributions of the existing studies on green caching. In addition, the study explores different cache-equipped network types, solution methods, and application scenarios. We categorically present that the optimal selection of the caching nodes, smart resource management, popular content selection, and renewable energy integration can substantially improve energy efficiency of the cache-equipped systems. In addition, based on the comprehensive analysis, we also highlight some potential research ideas relevant to green content caching.

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“…When M k = M and φ k = φ, for all k ∈ K, based on (25), we have (55), as shown at the top of the next page, where V m,M (ξ, θ  ) and W m (θ  ) are given by (22) and (23), respectively. First, it is easy to see that…”

Section: Appendix B Proof Of Propositionmentioning

confidence: 99%

“…The authors in [20]- [22] only considered deploying singleantenna at each BS, and therefore, their proposed caching schemes may not achieve desirable security performance in multi-antenna wireless networks. In addition, unlike [20], [22], to deliberately confuse the eavesdroppers, an artificial-noiseaided transmission strategy was further considered in [21].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Physical Layer Security of Random Caching in Large-Scale Multi-Antenna Heterogeneous Wireless Networks

Wen

Liu

et al. 2020

IEEE Trans.Inform.Forensic Secur.

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In this paper, we propose a novel secure random caching scheme for large-scale multi-antenna heterogeneous wireless networks, where the base stations (BSs) deliver randomly cached confidential contents to the legitimate users in the presence of passive eavesdroppers as well as active jammers. In order to safeguard the content delivery, we consider that the BSs transmits the artificial noise together with the useful signals. By using tools from stochastic geometry, we first analyze the average reliable transmission probability (RTP) and the average confidential transmission probability (CTP), which take both the impact of the eavesdroppers and the impact of the jammers into consideration. We further provide tight upper and lower bounds on the average RTP. These analytical results enable us to obtain rich insights into the behaviors of the average RTP and the average CTP with respect to key system parameters. Moreover, we optimize the caching distribution of the files to maximize the average RTP of the system, while satisfying the constraints on the caching size and the average CTP. Through numerical results, we show that our proposed secure random caching scheme can effectively boost the secrecy performance of the system compared to the existing solutions.

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Secure and Energy-Efficient Transmissions in Cache-Enabled Heterogeneous Cellular Networks: Performance Analysis and Optimization

Cited by 36 publications

References 43 publications

Physical-Layer Security in the Finite Blocklength Regime Over Fading Channels

Physical-Layer Security in the Finite Blocklength Regime Over Fading Channels

A Review on Green Caching Strategies for Next Generation Communication Networks

Enhancing Physical Layer Security of Random Caching in Large-Scale Multi-Antenna Heterogeneous Wireless Networks

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