聚合SDN控制的新一代空天地一体化网络架构

A New Space and Terrestrial Integrated Network Architecture Aggregated SDN

空天地一体化网络是未来互联网的发展趋势,它可以应对未来通信环境中各种复杂的环境和任务。但考虑到空天地一体化网络由地面基站、空中无人机、飞艇以及小卫星等多种接入和控制设备组成,网络拓扑时刻处于变化之中,并且各种信息交互频繁,难以对其进行直接有效的控制。软件定义网络(SDN)通过将控制面与数据面分离,并引入统一的数据交换标准及编程接口,可在异构网络情况下对全网设备进行统一管理,使网络资源全局分配、全局优化,从而达到灵活高效的网络配置和管理。本文将控制、转发分离的概念和网络虚拟化的思想引入到空地一体化网络,提出一种聚合SDN控制系统的新一代空天地一体化网络,该网络可以快速适应不同的场景,布网灵活,易于扩展,资源利用率高。仿真结果表明,相比传统的天地一体化网络,我们的新型一体化架构可以更好地进行空地协同传输,同时网络时延较小。

The space and terrestrial integrated network is the future trend of the Internet,which can handle various complex communication environments and tasks.However,considering the space and terrestrial integrated network composes of ground stations,air UAVs,airships and small satellites and other access control equipment.What＇s more,the network topology is dynamic in general case,and it usually is full of massive massages,which makes it difficult to direct and control the network effectively.By separating control and data planes,and introducing unified data exchange standards and programming interfaces,Software defined network（SDN） can manage the whole network equipment uniformly in heterogeneous networks,and all the network resources can be allocated,optimized globally,which achieves flexible and efficient network configuration and management.Leveraging the concepts of separating the forward and control plane,and network virtualization,we propose a new space and terrestrial integrated system integrated with SDN.This heuristic network can adapt to different scenarios,has great flexibility and high resource utilization.The simulation results show that our new network architecture has better performance than traditional space and terrestrial integrated network.