摘要
空间骨干网络是空间网络的核心,本文面向空间信息传输的应用场景,提出了空间骨干网络容量的理论分析模型。基于空间骨干节点是否与地面站直接相连,该模型区分了空间两类不同的节点:普通节点和枢纽节点,并据此分析网络容量的关键瓶颈和理论上限。通过将该模型应用到具体网络拓扑中,可以计算网络容量、找出网络关键链路并给出拓扑优化方案。计算结果表明,对于6个节点的空间骨干网络,经过拓扑优化之后,在两种不同假设条件下网络容量可以分别提升33.3%和100%。
The space backbone network is the core of space networks,concerning the application scenario of space information transmission,an analytic model of space backbone network capacity was proposed in this paper. The analytic model discloses the bottle neck and upper bound of the network capacity,by distinguishing two different types of the space nodes： the ordinary nodes and the key nodes,based on whether the space backbone node is directly connected with the earth station. By applying the model to someconcrete network topology,we could calculate the network capacity,find out the critical path sand propose topology optimization solutions. Numerical results show that,for a space-based backbone network with six nodes,after the topology optimization with two different assumptions,the network capacity can be improved by 33. 3% and 100% respectively.
出处
《中国电子科学研究院学报》
北大核心
2016年第1期66-72,共7页
Journal of China Academy of Electronics and Information Technology
基金
国家自然科学基金资助项目(91338201)
国家863计划资助项目(2015AA015701)
关键词
空间信息传输
空间骨干网络
网络容量
拓扑优化
space information transmission
space backbone network
network capacity
topology optimization
