In this study, the authors explore a wireless network consisting of multiple smart terminals relying on multi-mode in the presence of an eavesdropper, where the eavesdropper may be deployed to wiretap the wireless communications deliberately. In general, a smart terminal can be switched between the licensed modes (e.g. LTE) and the unlicensed modes (e.g. WiFi) according to user's demands (e.g. costs). The designed tradeoff is that the demands can be met by switching, but the security of wireless transmissions may be deteriorated, as the wireless communications can be overheard by the eavesdropper. The authors propose a transmission mode aware smart terminal scheduling (TM-STS) scheme to improve the security of wireless transmissions of a smart terminal. Moreover, they analyse the security-reliability tradeoff (SRT) of the TM-STS scheme. They also present the SRT of the conventional round-robin aided smart terminal scheduling (Rr-STS) scheme. Numerical results show that the TM-STS scheme outperforms the Rr-STS scheme in terms of its SRT, and reveal that increasing the number of smart terminals not only can upgrade the SRT of the TM-STS scheme, but also can be a major influence on the probability of mode switching between a licensed mode and an unlicensed mode of the TM-STS scheme.

中文翻译：

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存在多个窃听者时多终端多模式共存系统的安全性-可靠性权衡

在这项研究中，作者探索了一个无线网络，该网络由多个智能终端组成，在出现窃听者的情况下，它们依赖于多模式，可以在其中部署窃听者以故意窃听无线通信。通常，可以根据用户的需求（例如成本）在许可模式（例如，LTE）和非许可模式（例如，WiFi）之间切换智能终端。设计上的权衡是可以通过交换来满足需求，但是无线传输的安全性可能会降低，因为无线通信可能会被窃听者窃听。作者提出了一种传输模式感知型智能终端调度（TM-STS）方案，以提高智能终端无线传输的安全性。此外，他们分析了TM-STS方案的安全可靠性折衷（SRT）。他们还介绍了常规循环辅助智能终端调度（Rr-STS）方案的SRT。数值结果表明，TM-STS方案在SRT方面优于Rr-STS方案，表明增加智能终端数量不仅可以升级TM-STS方案的SRT，而且可能是主要影响。关于在TM-STS方案的许可模式和非许可模式之间进行模式切换的可能性。