Architecture of Space-Based Packet Transport Network Based on Laser Crosslinks

By establishing laser crosslinks with high-speed data transmission capability between satellites, the space communication network can achieve the goal of global seamless communication with only a few satellites. In order to adapt to the IP over CCSDS protocols for space communication network, the network consists of satellites should apply packet switching architecture. However, the speed of routing and forwarding is still very low in the space network due to the limited computing resources of satellite. In this paper, a packet switching scheme based on improved (Multi-protocol Label Switching, MPLS) is proposed for general satellites. By using routing protocol and signaling protocol, the constellation of satellites can realize the function of automatic packet switching, therefore the pressure of management and control on the ground operation system can be greatly reduced.