Implementation and evaluation of satellite Internet system

Use of the Internet is growing explosively, not only for text-based applications such as e-mail and bulletin boards, but also for multimedia WWW applications involving video and audio, and multicast services. Recently, satellites have been used in communication networks as a means of avoiding terrestrial Internet traffic jams. Satellites are a very efficient means of delivering large volumes of content to multiple clients simultaneously. We show that fast throughput using TCP/IP connection is feasible in networks comprising both satellite and terrestrial links. Then we propose a UDLR (Uni-Directional Link Routing) mechanism for networks that include uni-directional links (such as satellite links), and show that general dynamic routing algorithms such as RIP and OSPF can be adopted even when using mi-directional links.