All Optical Service Networks Architecture and Protocols for Integration of Space and Ground

The advance of the sixth generation (6G) network made the integration of space and ground network become a trend in the future. To realize global coverage and flexible connection, satellite communication is attracting more and more attention. However, space networks based on microwaves have limitations such as scarcer resource of spectrum, large attenuation. Therefore, laser communication is recommended. But the existed transmission technologies have difficulties in satisfying the various requirement of transport performance of personalized services. The network is needed to be more flexible facing services. In this paper, we proposed all optical service networks for integration of space and ground to implement 6G. First, an network architecture was illustrated. Then we summarized some key technologies in the architecture. In the end, we proposed three open issues to be discussed.