一种星地一体化路由设计的卫星IP网络  

An IP-Based Satellite Network with Integrative Design of Space and Ground Segments

作　　者：范继[1] 王宇[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710100

出　　处：《电讯技术》2010年第4期92-95,共4页Telecommunication Engineering

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。Most existing IP-based satellite systems have been simply used to provide 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 earth orbit（GEO） satellite system is proposed within which packet transport and switching are based on IP. This system is described from its transmission network and routing architecture. A new idea, which is on - ground routing and on-beard switching, is adopted for the resource constraints of satellite. Through an on-board IP switch, the one-hop communication between two satellite terminals can be realizable while there are a large number of terminals. A scalable concentrative routing architecture can effectively avoid large volumes of routing traffic via satellite. Such designs make communications mere efficient, at the same time the satellite network can be seamlessly compatible with Intemet.

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 

分 类 号：TN927[电子电信—通信与信息系统]