面向天地一体化网络的路由架构设计
Design of Routing Architecture for Integrated Network of Sky and Earth

随着天地一体化网络快速发展，传统路由架构已无法满足当今多业务传输需求。天地一体化网络存在星间链路拥塞和流量分布不均等问题。为了满足多业务传输需求，为用户提供快速高效的路径传输服务。本文针对上述问题，提出解决方案，首先，本文引入了SDN结合SR的部署方案，控制层面通过控制器计算路由，数据平面使用分段路由(SR)指导数据转发。旨在空间网络中提供可靠传输服务，减少路由条目。然后，本文基于传统路径搜索算法进行改进提出了一种路由计算方法TPSR，包括路径选择算法和路径搜索算法，在数据到来时能够快速搜索一条最优路径。最后，本文采用了Ryu和Mininet等开源工具对路由架构进行实现，并进行了多组实验验证其性能和有效性。对实验结果进行分析和总结，该路由架构在提高空间网络性能方面的显著效果。
With the rapid development of the integrated network of sky and earth, traditional routing architectures can no longer meet the demands of modern multi-service transmission. Problems such as inter-satellite link congestion and uneven traffic distribution exist in the integrated network of sky and earth. In order to provide users with fast, efficient, and reliable path transmission services to meet the demands of multi-service transmission, this paper proposes a solution to the aforementioned issues. Firstly, this paper introduces an SDN combined with SR deployment scheme, in which the control plane calculates routing via a controller and the data plane uses Segment Routing (SR) to guide data forwarding. The aim is to provide reliable transmission services in the spatial network while reducing routing entries. Secondly, this paper proposes an improved path calculation algorithm TPSR based on traditional path searching algorithms, including path selection algorithm and path search algorithm, which can quickly search for an optimal path when data arrives. Finally, the routing architecture is implemented using open-source tools such as Ryu and Mininet, and multiple experiments are conducted to verify its performance and effectiveness. The experimental results are analyzed and summarized, demonstrating the significant improvement of this routing architecture in enhancing space network performance.