I. Introduction
The wide-area coverage characteristics of satellites can well solve the problem of ground coverage. A satellite constellation composed of multiple satellites makes network communication more stereoscopic. In recent years, O3b, One Web, SpaceX and other commercial satellite companies have proposed satellite constellation plans. Increasing investment and research work on satellite-related technologies makes satellites stronger and smarter. This makes satellite networks have greater development potential, enabling emerging technologies such as edge computing, mist/fog computing considered in the future development of satellite networks, and research on satellite edge computing has also increased.