Device and method for realizing constellation communication

The invention discloses a device and a method for realizing constellation communication, and belongs to the technical field of satellite communication networks. The device comprises communication interconnection equipment carried on satellites, an MSC (Mobile Switching Center) and a radio frequency baseband module, and constructs a constellation network through devices carried on the satellites. The ground network management center carries out network management and state updating on the satellites and the whole satellite network through a special network management tunnel, and the ground authentication center carries out signed user authentication and service management on a terminal or a ground station accessed to the constellation network. A satellite on an orbit realizes network access to a ground station, a gateway station and a UE user ground terminal on the ground through a constellation network, and transmits a service request of a ground user and network data accessed by an ISP operator, thereby real