Abstract: Disclosed are a method, an apparatus and a non-transitory storage medium. The method includes: dividing satellites of the mega-constellation into satellite topology groups, so as to construct corresponding space-time grids, obtaining a dynamic matching relationship in time domain between the space-time grids and the satellite topology groups, setting a path weight for each space-time grid, acquiring a static grid path for forwarding a mission, where the static grid path is determined by an order of the space-time grids that need to be passed sequentially to forward the mission, adjusting the static grid path according to the satellite node currently receiving the mission and the dynamic matching relationship, so as to acquire the next satellite node to which the mission is forwarded from the satellite node currently receiving the mission.