Analysis of physical layer security enhancement in wireless communication systems under random mobility

With the rapid development of wireless communication technology, the widespread adoption of mobile terminals has made the security of wireless communication systems increasingly important. This paper proposes a physical layer security enhancement method based on a random mobility model to address the security challenges in dynamic wireless channels. By introducing an improved channel estimation technique and a dynamic encryption strategy, the proposed method can significantly enhance the security of wireless communication systems in random mobility environments. Experimental results demonstrate that the proposed method exhibits excellent performance under different mobility models, including increasing the system’s security capacity and reducing the probability of information leakage, making it particularly suitable for highly mobile scenarios. This research provides an effective solution for improving the physical layer security of wireless communication systems in complex environments.