Visible Light Secure Communication Method for Internet of Vehicles

With the rapid development of Internet of Vehicles technology, mobile communications are gradually integrated with various fields, and more and more Internet of Vehicles equipment are connected to the Internet. However, existing online information transmission methods mainly rely on the original network infrastructure. Once the communication infrastructure fails, it is likely that information transmission will fail or even be lost. In this paper, we utilize the optical modules that come with sensor nodes to implement a hybrid communication debugging system based on Visible Light Communication (VLC). To enhance uplink reliability, we’ve devised an optical camera-compatible frame synchronization method. Leveraging the Transformer algorithm, we predict frame header positions, thereby bolstering data collection reliability. Additionally, for efficient debugging information uploading, we logically group and organize the initial data, and use the Snappy compression algorithm to decrease empty time slot count to complete the data compression, saving time. Finally, confidentiality enhancement technology is introduced in the physical layer, and a new security enhancement optimization scheme based on Artificial Noise is proposed. The Artificial Noise (AN) sent by the sender enables the sender to counter eavesdropping interference, and the authorized recipient can cancel the Artificial Noise (AN). The results show that the proposed scheme is more secure.