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.