Abstract：Solar array is the only energy source for the majority of satellites, in view of the great need of the 6G space communication, under the premise that the output power is constant, satellite solar arrays need to further reduce the mass and volume. Roll-out solar array has the characteristics of lightweight, high-efficiency, and no need of the unfold drive, which has become an important direction for the development of space solar arrays. This paper introduces the development process of roll-out solar arrays and the development status of roll-out solar arrays in the domestic and foreign. The key technologies are sorted out to provide a reference for the selection of 6G satellite solar arrays and the development of roll-out solar arrays in the future.

Abstract：Mobile edge computing(MEC) is proposed to meet the growing computing demands.Driven by ubiquitous connectivity and global regional coverage, Low Earth Orbit(LEO) can break through geographical restrictions and achieve global wireless coverage, which is an indispensable choice for future 6G mobile communication systems. Therefore, this paper considers the formation of edge computing satellites by placing edge servers on satellites, and proposes a system architecture for satellite edge computing, which can provide computing services for users in remote areas on the earth or users who need emergency communication in extreme environments.

Abstract：Integration of satellite and terrestrial networks would bring better coverage, more flexible networking and more robust network architecture for 5G, which makes the 5G network connecting everything possible, and then becomes an important evolution direction for 5G network. This paper firstly introduces the necessity to support integration of satellite and terrestrial networks in B5G era, then analyses the developing phases and technical status of 5G network integrating with satellite from network architecture and technical standard point of view. Based on the technical status, the paper further analyses issues on system architecture evolution that 5G network integrating with satellite faces, and puts forward some architectural enhancement solutions, including 5G system enhancement on supporting satellite backhaul and User Plane Function(UPF) on-board.