Considering the ongoing development of various devices and rich applications in intelligent Internet of Things (IoT) systems, it is a crucial issue to solve secure transmission of legitimate signals for massive data sharing in the systems. Cooperative jamming-based physical layer security is explored to be a complement of conventional cryptographic schemes to protect private information. Yet, this method needs to solve a game between energy consumption and signal secure transmission. In this paper, we summarize the basics of cooperative jamming and universal security metrics. Using the metrics, we study a series of typical cooperative jamming strategies from two aspects, including power allocation and energy harvesting. Finally, we propose open issues and challenges of further works on cooperative jamming in an IoT system with energy constraints.

中文翻译：

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能量受限系统基于协作干扰的安全传输研究

考虑到智能物联网（IoT）系统中各种设备和丰富应用程序的持续开发，解决系统中海量数据共享的合法信号的安全传输至关重要。基于协作干扰的物理层安全性已被探索为传统加密方案的补充，以保护私人信息。然而，该方法需要解决能量消耗和信号安全传输之间的博弈。在本文中，我们总结了协作干扰和通用安全度量的基础。使用这些指标，我们从功率分配和能量收集两个方面研究了一系列典型的协作干扰策略。最后，我们提出了在能源受限的物联网系统中进行协作干扰的进一步工作的未解决问题和挑战。