| 摘要: |
| 现有大部分支持IP的卫星系统只是提供一个连接地面路由器的物理通道，难以满足
宽带接入、多媒体服务以及星地网络一体化等新的需求。为此，提出了一个分组传输和交换
均
基于IP的GEO卫星系统，并从传输网络和路由结构两方面进行了描述。并针对星上资源紧张
的现状，采用了一种地面路由星上交换的新设计思路。通过星上IP交换可实现大量终端间的
单跳通信，一个可扩展的集中式IP路由结构可有效减少通过卫星的路由流量，使得通信效率
提高的同时，能实现卫星网络与Internet的无缝兼容。 |
| 关键词: 地球同步轨道 卫星网络 因特网协议 传输网络 路由结构 无缝兼容 |
| DOI： |
|
| 基金项目: |
|
| An IP Based Satellite Network with Integrative Design of Space and Ground Segments |
| FAN Ji,WANG Yu |
| (Xi′an Institute of China Academy of Space Technology, Xi′an 710100, China) |
| Abstract: |
| Most existing IPbased satellite systems have been simply used to prov
ide physical access between terrestrial routers. It is difficult to satisfy some
new applications, such as broadband access, multimedia services and integration
of satellite network and the Internet, etc. In this paper a geostationary eart
h orbit(GEO) satellite system is proposed within which packet transport and swit
ching are based on IP. This system is described from its transmission net
work and routin
g architecture. A new idea, which is on-ground routing and onboard switching,
is adopted for the resource constraints of satellite. Through an onboard IP sw
itch, the onehop communication between two satellite terminals can be realizab
le while there are a large number of terminals. A scalable concentrative routing
architecture can effectively avoid large volumes of routing traffic via satelli
te. Such designs make communications more efficient, at the same time the satell
ite network can be seamlessly compatible with Internet. |
| Key words: geostationary earth orbit(GEO) satellite network IP transmission network routin
g architecture seamlessly compatible |
