An Intermittent Cooperative Jamming Strategy for Securing Energy-Constrained Networks

Abstract

The Internet-of-Things (IoT) emerges as a paradigm to achieve ubiquitous connectivity via wireless communications between kinds of physical objects. Due to the wireless broadcasting nature and the energy constraint of physical objects, concerns on IoT security have triggered research on cooperative jamming based physical layer security. With the help of a cooperative jammer, existing solutions can effectively fight against eavesdroppers. However, these schemes are of high energy cost due to continuously transmitting jamming signals. To reduce the energy consumption, we propose a new idea of intermittent jamming and design five specific intermittent jamming schemes (IJSs). By taking the transmit frame formate into account, we optimize these IJSs from three aspects, including the jamming power, the jamming method, and the jamming positions. Then we analyze the applicability of the proposed IJSs according to different requirements on the synchronization, the available jamming energy and the jamming power constraints. Extensive MATLAB experiments are conducted on the basis of the WLAN Toolbox, which demonstrate the proposed IJSs can effectively degrade the reception of the eavesdropper and outperform the widespread continuous jamming scheme (CJS) when the available jamming energy is limited.

Energy Efficient Robust Beamforming and Cooperative Jamming Design for IRS-Assisted MISO Networks

“…Optimal beamforming design plays an important role in the improvement of secure performance in wireless communication networks by using physical layer security. The related works can be classified into three categories, namely, secure beamforming design in conventional MISO networks with CJ under perfect CSI [20]- [26], robust secure beamforming design in conventional MISO networks with CJ under imperfect CSI [27]- [33], and secure beamforming design in IRS-assisted secure wireless networks [38]- [44].…”

“…For the conventional MISO network secure communication with perfect CSI, the beamforming and jamming design were jointly optimized to achieve different objectives, e.g., the secrecy rate maximization of users [20]- [23], the minimization of energy consumption [24], and the system efficiency maximization [25], [26]. Specifically, in [20], the authors exploited the CJ for multiple users via broadcast channels to enhance the secure performance with the help of a friendly jammer.…”

“…Besides the strategy selection, the mode switch can also improve the energy efficiency. In [26], the authors proposed an intermittent jamming strategy where a jammer alternates between jamming and non-jamming modes during the legitimate transmission. By jointly measuring security requirements and energy costs, they formulated and solved an optimization problem with respect to the jamming duration proportion and jamming power.…”

A cross-layer cooperative jamming scheme for social internet of things

“…They designed an optimal policy to preserve secrecy via stopping nodes from transmission. Following this work, existing studies on cooperative jamming focused on secure communication in various scenarios, including relay networks [23] , full-duplex networks [24] , multiple antenna systems [25] , energyconstrained systems [26] , D2D communications [27] , and heterogeneous networks [28] . Most of these works formulated different optimization problems based on various network frameworks, designed beamforming vectors and precoding matrices, optimized jamming transmission power, and finally achieved secure communication.…”

A Survey of Cooperative Jamming‐Based Secure Transmission for Energy‐Limited Systems

“…Take an intermittent jamming strategy proposed in [79] as an example. Different from traditional continuous jamming strategies, the intermittent jamming strategy proposed in this article is aimed at increasing the system security by shortening the jamming time but strengthening the jamming power.…”