Compared to the transparent mode (Rel-17), the regenerative mode will include enhancements and optimizations for NGSO satellite systems, considering the moving of the non-Geostationary satellites, enabling efficient blind search of user devices, etc. The regenerative will enable UEs to communicate with the NodeB even when a feeder link is not active, and makes communication everywhere on the globe possible. In the regenerative mode, the NodeB will be located on the satellites themselves.