A Source-Based Share-Tree Like Multicast Routing in Satellite Constellation Networks

Satellites can broadcast datagram over a wide area, even to the areas that cannot be well served by the existing terrestrial infrastructures. Therefore, it is a hot research topic about how to multicast datagram over satellites. Low Earth Orbit (LEO) satellites have short round-trip delay and low power consumption, it will be an essential part of future multimedia communication application. In this paper, we proposed a multicast routing for LEO satellite constellation networks with high performance. The algorithm uses the group members' geographic information to route multicast packets, with less memory, computer power and signaling overhead. Through simulation we evaluate the delay and performance of our algorithm.