一种面向空地一体化组网的体系架构  

An architecture for integrated spatial-terrestrial networks

作　　者：李刚[1] 冯振乾[2] 赵宝康[2] 何倩[1] 杨慧雅 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541000 [2]国防科学技术大学计算机学院,湖南长沙410073 [3]武警湖南省总队司令部,湖南长沙410022

出　　处：《计算机工程与科学》2016年第9期1797-1802,共6页Computer Engineering & Science

基　　金：国家863计划(2012AA01A50606);国家自然科学基金(61201250);广西高校科研项目(YB2014140);云计算与复杂系统高校重点实验室基金(14102);广西云计算与大数据协同创新中心;广西高校云计算与复杂系统重点实验室资助(YD16801;YD16505)

摘　　要：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。Spatial network, regarded as an extension of terrestrial network, is an important compo- nent 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, u- tilizing 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 o- riented 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 rou- ting updates between spatial networks and terrestrial networks are isolated by border gateways. Simula- tion 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.

关 键 词：一体化网络 空间网络 体系架构 流量 路由表 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]