Secrecy Outage Performance Analysis of Wirelessly Powered IoT System with Randomly Moving Receiving Nodes

Area of Science:

• Electrical Engineering
• Computer Science
• Information Theory

Background:

• Internet of Things (IoT) networks require scalable infrastructure and robust security, challenging for low-power nodes.
• Wireless Power Transfer (WPT) offers a viable solution for powering remote or inaccessible IoT devices.
• Node mobility in IoT systems complicates security and power management strategies.

Purpose of the Study:

• To investigate physical layer security for wirelessly powered IoT systems with mobile legitimate users and eavesdroppers.
• To derive analytical expressions for secrecy outage probability in Nakagami-m fading channels.
• To analyze the impact of node mobility on system security performance.

Main Methods:

• Derivation of closed-form approximate secrecy outage probability expressions.
• Modeling of wireless power transfer using a power beacon.
• Simulation of mobile IoT nodes using a random waypoint model in 1D, 2D, and 3D environments.

Main Results:

• Novel analytical expressions for secrecy outage probability were developed for mobile IoT systems.
• The derived expressions accurately predict system security performance under Nakagami-m fading.
• The study quantifies the impact of different mobility dimensions on physical layer security.

Conclusions:

• Physical layer security is a critical consideration for the design of secure and efficient IoT systems.
• The derived analytical models provide valuable tools for optimizing the performance of wirelessly powered mobile IoT networks.
• The findings support the deployment of secure IoT solutions in diverse and dynamic environments.