Research On The Routing Technology Of IP Satellite Communication System

From the non-regeneratiive relay-style carrier bend, regenerative bit bent, Satellite communication gradually developed into more complex and highly efficient onborard processing and switching. This evolution made the user demand growing and technology continuing to increase. For its advantages of "always on", low-cost and wide range coverage, Satellite communications plays an irreplaceable role in the field of military communication.In the current information society, for the importance of Internet, we must consider the integration of satellite network and Internet. Today, when terrestrial communication network and management of controlled entities are widely using IP protocols to interconnect, Satellite communications achieving the onborad switching based on IP protocol have great advantages.Based on the research project "Research on the IP-based onborad switching tecnology", the characteristics of main onborad switching technology firstly have been researched. And a basic design of IP-based onborad switching network is proposed. Considering the technically feasibility, based on the conception of cooperation between the satellite and ground, make full use of the processing capability of ground equipment, we proposed a practical routing technology of IP satellite communications network. The Satellite User Terminals (SUT) cooperated with the Terrestrial Management Center (TMC) to complete the routing protocols. The satallite network routing protocols technology this thesis studied are mainly divided into two kinds:one is the internal control protocol that complete the routing information exchange between the SUT and TMC; another is the Interior Gateway Protocol (IGP) between the ground routers and TMC when the satellite network communicated with the ground routers in the AS. Then the thesis described the module design of interior control protocol. And then we made an in-depth study of OSPF, proposed the design of Satellite OSPF (SOSPF) which achieved by the cooperation between the satellite and ground. Finally, the design of SOSPF sofeware that completed the elementary software implementation of interior routing and the protocol modules has been described.