一种面向空地一体化组网的体系架构

空间网络是空地一体化组网中地面网络延伸的重要组成部分。针对空间网络为移动星座的场景,传统的空地一体化组网模型将空间网络视为独立自治域,利用边界网关协议将空间网络与地面自治域互联起来,最大化同地面网络保持兼容。然而,传统组网模型存在边界网关面临频繁会话中断或大量路由更新等问题。通过重新审视空间网络的角色定位和边界划定问题,提出一种面向空地一体化组网的体系架构Slink。Slink的核心思想是空间网络为地面网络提供互联通道,利用星地网关隔离空地两网间的路由更新。实验仿真表明,Slink体系架构能够有效减小对空间路由器的路由存储空间需求,降低星地网络间的带宽消耗。

An architecture for integrated spatial-terrestrial networks

Spatial network, regarded as an extension of terrestrial network, is an important component of the integrated network. In the scenario that the spatial network is a mobile constellation, the traditional integrated network model takes the spatial network as an independent autonomous system, utilizing the border gateway protocol (BGP) to connect it with the terrestrial network and to maximize their compatibility between. However, the traditional integrated network model faces the problem of frequent session interruption and a large number of routing updates existing between border gateways. By re-examining the role of space network and border demarcation, we propose an integrated network oriented architecture，called space links for the integrated network (Slink). The core idea of the Slink is to utilize the spatial network to provide an interconnection channel for terrestrial networks and the routing updates between spatial networks and terrestrial networks are isolated by border gateways. Simulation results show that the Slink architecture can effectively reduce the need for storage space of the space routers and the bandwidth consumption between spatial networks and terrestrial networks.