Mobile wireless light communication network
Qi Z Q, Wang L N, Liang Y Z, et al
Sci China Inf Sci, 2025, 68(7): 174301
Mobile wireless light communication (MWLC) is emerging as a promising technology for various air-sea-land applications. When light is used as the transmission medium, MWLC technology can achieve anti-electronic interference communication across air, land, and water environments. However, because of the beam directivity, MWLC is position-sensitive and faces severe alignment problems in practical applications. The light-emitting diode (LED), emerging as a novel and efficient device with a broad emission angle, reduces alignment demands in motion scenarios and is expected to play an important role in mobile wireless light space communication and future enhanced satellite navigation. For the deployment of 6G mobile communication networks, acquiring accurate location information on mobile terminals is becoming extremely useful, not only for location-based services but also for improving wireless communication performance in various ways, such as through-beam alignment and network optimization. Therefore, this study reports an MWLC system using image recognition technology for automatic positioning and tracking. Furthermore, different light spectra have unique properties; for example, blue light is suitable for ocean scenarios, and white light is ideal for nighttime illumination. Combining MWLC systems in different spectra to establish a completely light-based mobile wireless light communication network (MWLCN) will result in high-speed and safe interconnections for multiple users and can simultaneously address communication challenges in various application scenarios. With devices such as unmanned aerial vehicles (UAVs), land vehicles, buoys, and autonomous underwater vehicles (AUVs), the MWLCN will enable high-speed dynamic connections in a wide range of scenarios.