At the present stage,the satellite subsystems in Space Information Networks(SINs)have their own systems and are separated from each other,which makes the network appear closed and fragmented,forming a severe resource barrier and resulting in weak collaborative application ability of space resources and low network expansion ability.The traditional architecture design adopts the"completely subversive"idea of the current space networks,which greatly increases the difficulty of actual deployment.Therefore,based on the current status of satellite networks,the idea of"upgrading step by step"is adopted to promote the evolution of the existing network architecture,and a dynamic and scalable architecture model is proposed in SINs from the perspective of mission drive,so as to realize the efficient and dynamic sharing of space resources among subsystems and promote the dynamic and efficient aggregation of space resources according to the changes in mission requirements.Firstly,a phased network architecture model is proposed,aiming at compatibility and upgrading of the existing network architecture.Then,the design of the core component coordinator is introduced,including network structure and working protocol,superframe structure,and efficient network resource allocation strategy,to realize the efficient transmission of spatial data.The simulation results show that the proposed network architecture realizes the efficient sharing of network resources and greatly improves the utilization rate of network resources.
关键词
空间信息网络/网络架构/资源分配/数据传输
Key words
Spatial information networks/Network architecture/Resource allocation/Data transmission
维普
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