LEO卫星网络的有限互联

随着空间技术的发展,空间飞行器产生越来越多的数据,这些数据需要传输到地面或者其它卫星上。受星载设备性能和其它因素的限制,IP路由技术难以应用LEO卫星网络上。IP路由的负荷之所以高,主要原因是IP网络采用“无限互联”的设计理念。为了降低路由负荷,提出“有限互联”的概念。端节点在网络地址发生变化时只通知有限个友节点,端节点维护与友节点之间的联系,由此将部分路由负荷从路由节点转移到端节点上。

Limited Interconnection of LEOSatellite Network

With the advance of space technology, more and more data will be generated by Skyflying Satellite (SFS) and sent to the ground or other SFSs. Limited by Onboard Services'performance,the satellite could not support the routing load by using IP routing methods. The high routing load is due to the unlimited interconnection through the IP routing. To lower the routing load,"limited interconnection"is proposed in this paper. By grouping the endnodes into sets, end node will only notice to its friend nodes in same set when its network address is changed, thus will move some part of load from routingnode to endnodes.