USV-Aided Data Secure Collection Scheme for Underwater Wireless Acoustic Networks

Underwater wireless acoustic networks (UWANs) integrating sensing and underwater acoustic communication technology have been widely used for the perception and collection of underwater information. However, due to the openness of UWAN's deployment environment and the broadcast nature of wireless communication, the data collection process of UWAN by using an autonomous underwater vehicle (AUV) may suffer from potential eavesdropping attacks, resulting in information leakage. In order to implement data secure collection, we propose a data secure collection scheme for UWAN assisted by unmanned surface vehicle (USV) to protect the security of data collection in the case of a malicious proactive eavesdropping AUV. Firstly, a friendly jamming strategy by USV for coping with the eavesdropping AUV is proposed. Secondly, the interaction between the data collection link and the eavesdropping link is modeled as a linear constrained bimatrix game problem, and the utility functions of the two links are established. After that, the equilibrium solution of the linear constrained bimatrix game is obtained by transforming the game into an optimal solution of a corresponding quadratic programming. The numerical results demonstrate that the proposed scheme can achieve higher utility of legitimate link compared with other schemes.